Abstract

The present teachings relate to a computer-implemented method for predicting temporally and/or spatially resolved behavior of a complex fluid, the method comprising the steps of a) training of a machine-learning algorithm with result data, the result data obtained with a first set of input parameters; b) predicting the temporally and/or spatially resolved behavior of the complex fluid using the trained machine-learning algorithm with at least a second set of input parameters, the second set of input parameters deviating at least partially from the first set of input parameters, wherein the trained machine-learning algorithm is iteratively executed starting from the second set of input parameters advancing from time (t) to time t+Δt; c) evaluation of the predicted behavior of the complex fluid obtained with the at least one second set of input parameters. The present teachings further relate to a computer software product.

IPC Classes  ?

• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
• G06N 3/08 - Learning methods
• G06N 20/10 - Machine learning using kernel methods, e.g. support vector machines [SVM]
• G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
• G06F 111/10 - Numerical modelling
• G06F 113/08 - Fluids
• G06F 113/22 - Moulding

Abstract

The invention relates to a process for producing a modified isocyanate, comprising the reaction of a monomeric isocyanate in the presence of a catalyst to form a reaction mixture, wherein the catalyst comprises at least one spirocyclic ammonium salt containing at least one spirocyclic ammonium cation and at least one anion. The invention further relates to a modified isocyanate obtainable by the process according to the invention and the use thereof for producing polyurethane bodies or coatings, as well as to the polyurethane bodies or coatings. The invention further relates to one-component or two-component systems comprising the polyisocyanates having improved properties.

IPC Classes  ?

• C08G 18/02 - Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates

Abstract

The present invention relates to an efficient enzymatic method for cleaving aromatic carbonates, shown using the example of the hydrolysis of bisphenol A polycarbonate by means of multiple lipases/cutinases. The order of the method steps plays a significant role, since the addition of a polar, organic solvent to the polycarbonate, shown using the example of DMSO, followed by the addition of the enzyme leads to increased hydrolysis.

IPC Classes  ?

• C12P 7/22 - Preparation of oxygen-containing organic compounds containing a hydroxy group aromatic
• C12N 9/18 - Carboxylic ester hydrolases

Abstract

The invention relates to enzymes and enzyme-based methods for cleaving aromatic carbonates. The enzymes are particularly suitable for cleaving carbonates based on bisphenol A and can therefore be used to recover bisphenol A from polymers.

IPC Classes  ?

• C12P 7/22 - Preparation of oxygen-containing organic compounds containing a hydroxy group aromatic
• C12P 11/00 - Preparation of sulfur-containing organic compounds

Abstract

The invention relates to a composition for the production of a thermoplastic molding compound, wherein the composition contains at least one polycarbonate and/or polyestercarbonate containing structural units derived from bisphenol A, a mixture of rubber-modified vinyl (co)polymers, talc and at least one carboxylic acid. The invention also relates to the molding compound obtained from the composition, to molded articles obtained from the composition or the molding compound and to the use of the carboxylic acid for the reduction of the content of free bisphenol A in molding compounds and molded articles comprising at least one polycarbonate and/or polyestercarbonate containing structural units derived from bisphenol A, a mixture of rubber-modified vinyl (co)polymers and talc. By the use of the carboxylic acid the reduction of the content of free bisphenol A preferably is realized in combination with an improved surface appearance of the molded articles.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

By using a device for producing organic, aromatic isocyanate, said device at least containing a special production unit for providing nitric acid and superheated steam, a nitration unit, a hydrogenation unit, and a phosgenation unit, an improved use of sustainable energy sources can be achieved by utilizing waste heat as superheated steam for feeding heat energy to other utilization devices, in particular other units of the device. Parts of the aforementioned device are driven by an electric motor, as described in claim 1, in order to thus use the resources for process heat in the form of steam more effectively across the entire process chain of the device, whereby the use of energy is made more sustainable.

IPC Classes  ?

• C07C 201/08 - Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic

Abstract

The present invention relates to a process for recovering valuable substances from polyurethane products, comprising the steps of: (A) providing an isocyanurate-containing polyurethane product, the polyol component of which comprises polyester polyols and/or polyether ester polyols, comprising extraction of the isocyanurate-containing polyurethane product using an organic solvent that does not react with urethane groups and isocyanurate groups during the extraction; (B) mixing the polyurethane product with water, a basic catalyst and optionally an organic chemolysis reagent to obtain a reaction mixture, reacting the reaction mixture at a reaction temperature of 90°C to 220°C to obtain a chemolysis product; and (C) processing the chemolysis product to obtain (I) at least one amine and/or (II) at least one polyol and/or at least one reaction product of a polyol, wherein the type and amount of the basic catalyst are selected such that there is always a pH value of 12 or more in the reaction mixture during the reaction.

IPC Classes  ?

• C08J 11/14 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with steam or water
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material

Abstract

The application is directed to a coating composition A comprising A1 an isocyanate compound, comprising an isocyanate-terminated prepolymer B which is obtained by reaction of a composition comprising B1 at least one isocyanate-reactive compound, B2 at least one polyisocyanate, and optionally B3 additives, A2 a catalyst, A3 a polyol, and wherein component B1 comprises at least one compound B1.1 with a number-average molecular weight in the range of from 150 g/mol to 1500 g/mol which is selected from the group of poly(ε- caprolactone), castor oil, hydrogenated castor oil, polytetrahydrofurane, poly(1,3-propanediol), polyesterpolyol and mixtures thereof, and wherein component A3 comprises at least a polyol A3.1 with a molecular weight of 210 g/mol or less. The application further provides a process for preparing a coating, a coating obtained by the process and the use of said coating for wind turbines and construction applications.

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/36 - Hydroxylated esters of higher fatty acids
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/48 - Polyethers
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C09D 175/04 - Polyurethanes
• C09D 175/06 - Polyurethanes from polyesters
• C09D 175/08 - Polyurethanes from polyethers

Abstract

The present invention relates to a compound containing aromatic hydroxyl groups and to a process of preparing same. The invention also relates to a process for preparing a polyurethane, involving reacting the compound containing aromatic hydroxyl groups; to the polyurethanes resulting therefrom; and to a thermal treatment of this polyurethane.

IPC Classes  ?

• C08G 18/48 - Polyethers
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/16 - Catalysts
• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 101/00 - Manufacture of cellular products

Abstract

The invention relates to a layer structure, containing: A. a first, preferably transparent or white, radiation-engravable layer A. having a first surface a1. and a second surface a2. which is substantially parallel to the surface a1.; at least one transparent plastic layer B. having a first surface b1., which points in the direction of layer A., and a second surface b2., wherein layer B. contains an IR absorber in an amount in the range from ≥ 0.7 wt.% to ≤ 4.5 wt.%, calculated as the solids content of inorganic IR absorber, wherein the layer structure has both a milky white engraving and a black engraving, which were produced by means of non-ionising electromagnetic radiation E. and are visible from at least one side of the layer structure, wherein the black engraving has an optical density of at least 0.5, preferably in the range from 0.5 to 2, measured according to ISO 5-3:2009.

IPC Classes  ?

• B42D 25/309 - Photographs
• B42D 25/313 - Fingerprints
• B42D 25/324 - Reliefs
• B42D 25/351 - Translucent or partly translucent parts, e.g. windows
• B42D 25/36 - Identification or security features, e.g. for preventing forgery comprising special materials
• B42D 25/41 - Marking using electromagnetic radiation
• B42D 25/455 - Associating two or more layers using heat
• B42D 25/46 - Associating two or more layers using pressure

Abstract

The present invention relates to a method for operating an extruder, in particular for variably adjusting the oxygen content in the supply region of the extruder, wherein the extruder has a filling shaft for supplying a material to be extruded, which filling shaft has an inlet opening at one end and opens into the extruder housing at the opposite end, and in which filling shaft at least one inert gas feed device is provided for supplying an inert gas flow into the filling shaft, wherein the inert gas volume flow of the inert gas flow is adjusted such that the Reynolds number of the inert gas flow in the filling shaft (Re) is at least 180. The invention further relates to a control device for variably adjusting the oxygen content in the supply region of an extruder during operation thereof, in particular in a method according to the invention, and to an extruder having an associated control device of this type.

IPC Classes  ?

• B29C 48/14 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
• B29C 48/285 - Feeding the extrusion material to the extruder
• B29C 48/50 - Details of extruders
• B29C 48/92 - Measuring, controlling or regulating

Abstract

The invention relates to a single-component system for coatings, comprising: a) at least one blocked polyisocyanate containing two or more 2-carbamoylpropane-1,2,3-tricarboxylate structures; b) at least one binder which is reactive toward isocyanate groups and has, on a statistical average, at least two isocyanate-reactive groups per molecule; c) optionally catalysts; and d) optionally solvents and/or optionally auxiliaries and additives. The invention further relates to the use thereof and to methods for producing aqueous, solvent-free or solvent-containing lacquers, paints, adhesives and molded articles, as well as to the corresponding products.

IPC Classes  ?

• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/80 - Masked polyisocyanates

Abstract

The present invention relates to a method comprising the obtaining of aniline from a starting material selected from (i) a urethane based on an isocyanate and an alcohol, wherein the isocyanate comprises methylene diphenylene diisocyanate or a mixture of methylene diphenylene diisocyanate and polymethylene polyphenylene polyisocyanate, or (ii) an aromatic amine, wherein the aromatic amine comprises methylene diphenylene diamine or a mixture of methylene diphenylene diamine and polymethylene polyphenylene polyamine, with said method comprising a thermal cleavage of the starting material in a reactor in the presence of a catalyst at a temperature of 180 °C to 290 °C, forming a gaseous method product containing aniline and withdrawing the gaseous method product from the reactor, wherein the catalyst comprises an ammonium salt.

IPC Classes  ?

• C08J 11/28 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus

Abstract

The invention relates to a single-component coating material for food containers, comprising: a) at least one blocked polyisocyanate containing two or more 2-carbamoylpropane-1,2,3-tricarboxylate structures; b) at least one binder which is reactive toward isocyanate groups and has, on a statistical average, at least two isocyanate-reactive groups per molecule; c) optionally catalysts; and d) optionally solvents and/or optionally auxiliaries and additives; wherein a) and b) are present in an equivalent ratio of the sum of the blocked and non-blocked isocyanate groups from a) to isocyanate-reactive groups from b) of 1.5 : 1 to 12.0 : 1. The invention further relates to the use thereof and to methods for producing aqueous, solvent-free or solvent-containing lacquers, paints, adhesives and molded articles, as well as to the corresponding products.

IPC Classes  ?

• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/80 - Masked polyisocyanates

Abstract

The invention relates to a distillation device for separating monomer diisocyanate from a polyisocyanate composition. The distillation device comprises: at least one pre-evaporation device comprising a first inlet for the polyisocyanate composition to be distilled, comprising a pre-evaporator that has a first interior, comprising a first gas outlet for evaporated components, comprising a first liquid outlet for non-evaporated components of the polyisocyanate composition, and comprising at least one first condenser associated with the first gas outlet; at least one thin-film evaporation device comprising a second inlet for the non-evaporated components of the polyisocyanate composition, comprising a thin-film evaporator having a second interior, comprising a second gas outlet for evaporated components, comprising a second liquid outlet for the polyisocyanate composition from which unreacted isocyanate has been substantially removed, and comprising at least one second condenser associated with the second gas outlet; and a vacuum generating device comprising at least one vacuum pump and designed to generate a pressure P1 in the interior of the pre-evaporator of the at least one pre-evaporation device and a pressure P2, where P2

IPC Classes  ?

• B01D 3/06 - Flash distillation
• B01D 3/10 - Vacuum distillation
• B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
• C08F 6/10 - Removal of volatile materials, e.g. monomers, solvents
• C08F 6/12 - Separation of polymers from solutions

Abstract

The present invention relates to the obtaining of aniline from polyurethane products or waste streams of isocyanate production. The polyurethane products are based on an isocyanate component comprising methylene diphenylene diisocyanate or a mixture of methylene diphenylene diisocyanate and polymethylene polyphenylene polyisocyanate; the waste streams originate from the production of said isocyanates. The invention comprises a method having the steps of (A) chemolysis of the polyurethane product or waste stream, (B) optional processing of the chemolysis product and (C) pyrolysis of the optionally processed chemolysis product. The invention also relates to a system for obtaining aniline, comprising (a) a chemolysis device, (b) an optional processing device and (c) a pyrolysis device.

IPC Classes  ?

• C07C 211/46 - Aniline
• C07C 209/68 - Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
• C07C 209/62 - Preparation of compounds containing amino groups bound to a carbon skeleton by cleaving carbon-to-nitrogen, sulfur-to-nitrogen, or phosphorus-to-nitrogen bonds, e.g. hydrolysis of amides, N-dealkylation of amines or quaternary ammonium compounds
• C07C 211/54 - Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to two or three six-membered aromatic rings
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• C08J 11/28 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus

Abstract

The present invention relates to a bio assay which identifies microorganisms expressing a urethanase gene. Growth on a medium deficient in folic acid an supplemented with u- aminobenzoic acid is used in this assay.

IPC Classes  ?

• C12Q 1/34 - Measuring or testing processes involving enzymes, nucleic acids or microorganismsCompositions thereforProcesses of preparing such compositions involving hydrolase

Abstract

An isocyanate reactive formulation particular suitable for the production of polyurethane foams which may be used as encapsulation material for battery module, a reactive polyurethane foam composition made therefrom with polyisocyanates and a process to make polyurethane foams by conversion of such reactive foam composition are disclosed.

IPC Classes  ?

• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates

Abstract

The present invention relates to a method for recovering fibres from fibre-reinforced polyurethane-based composites with the aid of a hydrolysis method, and to the further use of the fibres recovered in this way.

IPC Classes  ?

• C08J 11/14 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with steam or water
• D01G 11/00 - Disintegrating fibre-containing articles to obtain fibres for re-use
• B29B 17/02 - Separating plastics from other materials
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material
• B29K 105/06 - Condition, form or state of moulded material containing reinforcements, fillers or inserts

Abstract

The present invention relates to means and methods for the biological oxidation of formic acid in industrial wastewater, particularly with high salt concentrations. Yeast cells suitable for this purpose are described as well as useful enzymes, particularly formate dehydrogenases and oxidases.

IPC Classes  ?

• C02F 3/34 - Biological treatment of water, waste water, or sewage characterised by the microorganisms used
• C12N 1/16 - YeastsCulture media therefor
• C12N 9/02 - Oxidoreductases (1.), e.g. luciferase
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 101/34 - Organic compounds containing oxygen
• C02F 103/36 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups from the manufacture of organic compounds
• C12R 1/78 - Hansenula
• C12R 1/84 - Pichia
• C12R 1/865 - Saccharomyces cerevisiae

Abstract

The present invention provides a method for separating hexamethylene diamine (HMDA) from an aqueous solution, comprising the steps: a) providing an HMDA- containing aqueous solution, wherein said aqueous solution is a fermentation broth, b) extracting the HMDA-containing aqueous solution with a monovalent alcohol having 4 to 8 carbon atoms, c) obtaining an HMDA-containing alcoholic phase, and d) distilling the HMDA-containing alcoholic phase at a pressure of 1-1000 mbar and separating the HMDA from the monovalent alcohol.

IPC Classes  ?

• C07C 209/84 - Purification
• C07C 211/12 - 1,6-Diaminohexanes

Abstract

Method for separating 1,6-hexamethylenediamine (HMDA) from an aqueous solution, comprising the steps: a) providing HMDA-containing aqueous solution, wherein said aqueous solution is a fermentation broth, b) extracting the HMDA-containing aqueous solution with a solvent mixture (i) at least one monovalent alcohol having 4 to 7 carbon atoms and (ii) at least one alkane having 5 to 7 carbon atoms, wherein the alkane content of the solvent mixture is in the range from 2 wt% to 50 wt% based on the total weight of all alcohols and alkanes present in the solvent mixture; c) obtaining an HMDA- containing solvent mixture as separatephase, and d) distilling the HMDA-containing solvent mixture and separating the HMDA from the solvent mixture.

IPC Classes  ?

• C07C 209/84 - Purification
• C12P 13/00 - Preparation of nitrogen-containing organic compounds

Abstract

The present invention relates to a process for producing alkoxysilane-containing polyurethanes and/or polyurethane ureas by reacting A1) at least one alkoxysilane-free compound containing at least one isocyanate group and/or B1) at least one alkoxysilane-free compound containing at least one Zerewitinoff-active hydrogen atom with at least one compound containing at least one alkoxysilane group and at least one NCO group and/or B2) at least one compound containing at least one alkoxysilane group and at least one Zerewitinoff-active hydrogen atom in the presence of (C) additives, characterized in that C) comprises tin(II) chloride as catalyst. The invention further relates to the alkoxysilane-containing polyurethanes obtained from the process and to the use thereof.

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/48 - Polyethers
• C08G 18/71 - Monoisocyanates or monoisothiocyanates
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C09D 175/08 - Polyurethanes from polyethers
• C09J 175/08 - Polyurethanes from polyethers

Abstract

The present invention relates to a method for obtaining aqueous solutions containing hexamethylene diamine by depolymerizing polyamides and efficiently separating said hexamethylene diamine from the aqueous solution.

IPC Classes  ?

• C07C 209/62 - Preparation of compounds containing amino groups bound to a carbon skeleton by cleaving carbon-to-nitrogen, sulfur-to-nitrogen, or phosphorus-to-nitrogen bonds, e.g. hydrolysis of amides, N-dealkylation of amines or quaternary ammonium compounds
• C07C 209/84 - Purification

Abstract

The present invention relates to the extraction of 1,6-hexamethylenediamine from aqueous mixtures using combinations of solvents.

IPC Classes  ?

• C07C 209/62 - Preparation of compounds containing amino groups bound to a carbon skeleton by cleaving carbon-to-nitrogen, sulfur-to-nitrogen, or phosphorus-to-nitrogen bonds, e.g. hydrolysis of amides, N-dealkylation of amines or quaternary ammonium compounds
• C07C 209/84 - Purification

Abstract

The present invention relates to a process for preparing a block copolymer, in which process a composition containing A) at least one representative selected from the group consisting of polycarbonates, polyesters and polyester carbonates, B) at least one second polymer selected from the group consisting of in each case OH- and/or COOH-functionalised vinyl (co)polymers, olefin (co)polymers and (organo)polysiloxanes, C) at least one transition metal carboxylate salt containing a transition metal cation Mn+, where n is an integer between 1 and 4, and a carboxylate anion of a monovalent or polyvalent carboxylic acid, wherein component C is used in an amount of at least 0.01 parts by weight, based on a total of 100 parts by weight of components A and B, is melted by introducing mechanical and/or thermal energy, the components of the composition are mixed and dispersed in one another, and components A and B in the melt dispersion of the components are at least partly converted to form the block copolymer. The invention also relates to a specific block copolymer containing blocks A*, derived from at least one polymer A, and blocks B*, derived from at least one polymer B, and to a thermoplastic moulding compound containing the block copolymer, and to a moulded body containing the block copolymer.

IPC Classes  ?

• C08G 81/00 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
• C08G 63/91 - Polymers modified by chemical after-treatment
• C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
• C08F 8/00 - Chemical modification by after-treatment
• C08G 64/18 - Block or graft polymers
• C08G 77/448 - Block- or graft-polymers containing polysiloxane sequences containing polycarbonate sequences

Abstract

The present invention relates to an isocyanate-terminated prepolymer obtainable by the process according to the invention, and to the use of the prepolymer obtained by the process according to the invention or of the prepolymer obtainable by the process according to the invention for the production of an adhesive film or of a shaped body. The invention also provides the process for producing the adhesive film and the adhesive film obtainable by this process.

IPC Classes  ?

• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/48 - Polyethers
• C08G 18/67 - Unsaturated compounds having active hydrogen
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C09J 175/08 - Polyurethanes from polyethers

Abstract

The present invention relates to a process for preparing polypropylene ether-containing thermoplastic polyurethanes and to polypropylene ether-containing thermoplastic polyurethanes obtained or obtainable by these processes. The invention further relates to the use of these polypropylene ether-containing thermoplastic polyurethanes and to articles comprising or consisting of the polypropylene ether-containing thermoplastic polyurethane.

IPC Classes  ?

• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/48 - Polyethers
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/08 - Processes

Abstract

The present invention provides a battery module comprising at least one battery cell and a polyurethane potting foam, wherein the battery cell is potted in the polyurethane potting foam, and a polymer layer with wetting tension of less than or equal to 32 mN/m, preferably less than or equal to 28 mN/m, more preferably less than or equal to 25 mN/m, most preferably 16 to 25 mN/m is applied on a contact interface between the battery cell and the polyurethane potting foam, the wetting tension is measured according to GB/T 14216-2008. The present invention provides a battery module with rapidly detachable battery cells, which is suitable for industrial large-scale production. Thus, it is possible to detach and replace specific battery cells, greatly reduce the maintenance cost of battery modules, and recycle waste battery cells, which meets environmental requirements to the greatest extent.

IPC Classes  ?

• H01M 50/218 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the material
• H01M 50/233 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions
• H01M 50/244 - Secondary casingsRacksSuspension devicesCarrying devicesHolders characterised by their mounting method
• H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
• H01M 50/121 - Organic material
• H01M 50/124 - Primary casingsJackets or wrappings characterised by the material having a layered structure
• H01M 50/131 - Primary casingsJackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
• H01M 50/213 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic

Abstract

The present invention relates to a thermoplastic polycarbonate composition comprising the following components A-E: A) from 78 wt.% to 97 wt.% of an aromatic polycarbonate; B) from 0.05 wt.% to 0.09 wt.% of a fluorine-containing metal organic sulfonate; C) from 0.05 wt.% to 0.5% of an epoxy group-containing vinyl-based copolymer; D) from 2 wt.% to 20 wt.% of a glass fiber; and E) from 0.05 wt.% to 0.5 wt.% of an anti-dripping agent, wherein the amounts are relative to the total weight of the composition. The present invention also relates to a shaped article made from the composition. The polycarbonate composition according to the present invention has good flame retardancy.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

The present invention relates to a compound containing oximic hydroxyl groups and to a process of preparing same. The invention further relates to a process for preparing a polyurethane, comprising the reaction of the compound containing oximic hydroxyl groups, to the polyurethanes resulting therefrom and to a thermal treatment of this polyurethane.

IPC Classes  ?

• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/50 - Polyethers having hetero atoms other than oxygen
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 65/26 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds

Abstract

A gas diffusion electrode is suitable for improving the mechanical stability of a gas diffusion electrode and reducing the amount of hydrogen generated at the gas diffusion electrode during an electrolysis process, said gas diffusion electrode containing at least one electrocatalyst and at least one gas diffusion layer (21) arranged on more than 75% of the surface of an open-pore, planar carrier produced from at least one material and being characterised in that based on the total weight of said carrier, the total proportion of electrically conductive material of said carrier is in the range from 50 to 100 wt.% and said carrier has, at least along one of its boundary regions, a partial area (22) which is not covered by the gas diffusion layer, wherein on said partial area (22) at least on the surface of said carrier, a material is present which (a) conducts electric current and at 50°C has at least the same overvoltage for the development of hydrogen as the at least one electrocatalyst, or (b) is an insulator.

IPC Classes  ?

• C25B 1/26 - ChlorineCompounds thereof
• C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
• C25B 11/031 - Porous electrodes
• C25B 11/04 - ElectrodesManufacture thereof not otherwise provided for characterised by the material

Abstract

The present invention relates to a method for producing composite components with improved interlaminar bonding, the components comprising a carrier, which comprises polycarbonate and at least one polyurethane layer in direct contact with this carrier. The invention also relates to composite components with improved interlaminar bonding, and to the use of a polycarbonate having a defined aliphatic OH content as a carrier material or film material in the production of composite parts with improved interlaminar bonding.

IPC Classes  ?

• B29C 45/16 - Making multilayered or multicoloured articles
• B29C 67/24 - Shaping techniques not covered by groups , or characterised by the choice of material
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
• B29K 69/00 - Use of polycarbonates as moulding material
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material

Abstract

The present invention relates to a polyisocyanate mixture containing: at least one HDI polyisocyanate M) having a viscosity according to DIN EN ISO 3219:1994-10 at 23°C of 100 to 1600 mPas and comprising allophanate- and/or isocyanurate structures, and at least one PDI polyisocyanate N) in a weight ratio of 80 : 20 to 20 : 80. The invention further relates to the use of the polyisocyanate mixture and to a composition containing the polyisocyanate mixture, to a method for producing a coating on a substrate and to the coated substrate.

IPC Classes  ?

• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C09D 175/04 - Polyurethanes

Abstract

The invention relates to a polyisocyanate mixture, to a method for the production thereof, and to the use of the polyisocyanate mixture. The invention also relates to a composition containing the polyisocyanate mixture, a method for producing a coating on a substrate, and to the coated substrate.

IPC Classes  ?

• C08G 18/02 - Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
• C08G 18/09 - Processes comprising oligomerisation of isocyanates or isothiocyanates involving reaction of a part of the isocyanate or isothiocyanate groups with each other in the reaction mixture
• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/36 - Hydroxylated esters of higher fatty acids
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/40 - High-molecular-weight compounds
• C08G 18/48 - Polyethers
• C08G 18/54 - Polycondensates of aldehydes
• C08G 18/65 - Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
• C08G 18/66 - Compounds of groups , , or
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/78 - Nitrogen
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C09D 175/02 - Polyureas
• C09D 175/04 - Polyurethanes
• C08G 18/80 - Masked polyisocyanates

Abstract

The invention relates to a blocked polyiosocyanate, which contains two or more 2-carbamoylpropane-1,2,3-tricarboxylate structures, and to a process of production thereof. The invention further relates to a composition containing the blocked polyisocyanate, but also to moldings or coated substrates made of the blocked polyisocyanates.

IPC Classes  ?

• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/80 - Masked polyisocyanates
• C09D 175/04 - Polyurethanes
• C09J 175/04 - Polyurethanes

Abstract

The invention is related to the use of a solvent-free composition C, comprising (A) at least one epoxy-group terminated polyoxazolidinone, derived from a process P comprising the copolymerization of (A1) at least one aliphatic poly epoxide compound with (A2) at least one cycloaliphatic and/or at least one aromatic and/or at least one araliphatic polyisocyanate compound, preferably in the presence of (A3) at least one catalyst, wherein the process is operated at a molar ratio of the epoxy groups of the polyepoxide component (Al) to the isocyanate groups of the polyisocyanate component (A2) of ≥ 2: 1 to ≤ 25: 1, furthermore comprising (B) at least one compound having at least one group that is reactive towards terminal epoxy-groups, (C) optionally at least one catalyst and (D) optionally at least one additive, for producing adhesives, sealing compounds, potting compounds, composites, such as fiber composite materials, or moldings, or for producing coatings on mineral, metallic or plastic substrates. The invention is also related to the aforementioned products, obtainable according to the inventive use.

IPC Classes  ?

• C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C09D 175/04 - Polyurethanes

Abstract

The invention relates to a method involving the production of aminobenzoic acid, said method having the steps of: (A) fermenting a raw material containing a reducing sugar and a nitrogen-containing compound in the presence of microorganisms in a fermentation reactor in order to form an aminobenzoate anion-containing fermentation product, wherein the pH value is kept in the range of 6.0 to 8.5 during the fermentation process by adding an inorganic base, (B) separating the microorganisms from the fermentation product, thereby obtaining a clarified fermentation product, and (C) precipitating aminobenzoic acid from the clarified fermentation product by setting a pH value of 3.0 to 4.7 by adding a protonic acid and separating the precipitated aminobenzoic acid, thereby leaving a mother liquor. The mother liquor obtained in step (C) is supplied to step (A).

IPC Classes  ?

• C12P 7/40 - Preparation of oxygen-containing organic compounds containing a carboxyl group
• C12P 13/00 - Preparation of nitrogen-containing organic compounds
• C12P 13/04 - Alpha- or beta-amino acids

Abstract

The invention relates to the production of aminobenzoic acid using a method having the steps of (A) providing an aminobenzoate anion-containing fermentation broth by carrying out a fermentation process in the presence of microorganisms selected from Escherichia coli, Pseudomonas putida, Corynebacterium glutamicum, Bacillus coagulans, or a mixture of two or more of the aforementioned microorganisms and subsequently carrying out a clarification process, (B) setting a pH value of 3.0 to 5.5 in the aminobenzoate anion-containing fermentation broth by adding formic acid, (C) separating aminobenzoic acid precipitated in step (B), and (D) partly or completely introducing the mother liquor precipitated in step (C) to the fermentation, thereby depleting the formate anions contained in the mother liquor and the formic acid by means of (i) an added enzyme preparation and/or (ii) the microorganisms used in step (A) and/or (iii) added additional microorganisms which differ from the microorganisms used in step (A). The aminobenzoic acid obtained in this manner can be converted into secondary products, in particular into aniline and, in the case of ortho-aminobenzoic acid, into isatoic anhydride or anthranilic acid ester, which can be used as starting materials in the production of polymeric compounds such as polyurethanes or poly(anthranilamide).

IPC Classes  ?

• C12P 7/40 - Preparation of oxygen-containing organic compounds containing a carboxyl group
• C12P 13/00 - Preparation of nitrogen-containing organic compounds
• C12P 13/04 - Alpha- or beta-amino acids

Abstract

The invention relates to a method involving the production of aminobenzoic acid, said method having the steps of: (A) fermenting a fermentable carbon-containing compound and a nitrogen-containing compound in the presence of microorganisms to obtain a fermentation broth containing aminobenzoate anions and/or aminobenzoic acid; (B) recovering aminobenzoic acid from the fermentation broth; (C) converting carbon dioxide into a reduction product selected from formic acid, ammonium formate, an alkali metal salt of formic acid, acetic acid, ammonium acetate, or an alkali metal salt of acetic acid, and (D) adding the reduction product from step (C) to the fermentation process of step (A).

IPC Classes  ?

• C12P 7/40 - Preparation of oxygen-containing organic compounds containing a carboxyl group
• C12P 7/54 - Acetic acid
• C12P 13/00 - Preparation of nitrogen-containing organic compounds
• C12P 13/04 - Alpha- or beta-amino acids

Abstract

The present invention relates to a process for producing composite components with improved interlaminar bonding, the components comprising a carrier, which comprises polycarbonate and a further thermoplastic polymer, and at least one polyurethane layer in direct contact with this carrier. The invention also relates to composite components with improved interlaminar bonding, and to the use of a thermoplastic composition having a defined OH content as a carrier material or film material in the production of composite parts with improved interlaminar bonding.

IPC Classes  ?

• B29C 45/16 - Making multilayered or multicoloured articles
• B29C 67/24 - Shaping techniques not covered by groups , or characterised by the choice of material
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
• B29K 69/00 - Use of polycarbonates as moulding material
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material

Abstract

The present invention relates to a process for producing composite components with improved interlaminar bonding, the components comprising a carrier, which comprises polycarbonate and at least one additive, and at least one polyurethane layer in direct contact with this carrier. The invention also relates to composite components with improved interlaminar bonding, and to the use of a thermoplastic composition having a defined OH content as a carrier material in the production of composite parts with improved interlaminar bonding.

IPC Classes  ?

• B29C 45/16 - Making multilayered or multicoloured articles
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 75/00 - Compositions of polyureas or polyurethanesCompositions of derivatives of such polymers
• B29K 69/00 - Use of polycarbonates as moulding material
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material
• B29C 67/24 - Shaping techniques not covered by groups , or characterised by the choice of material

Abstract

The invention relates to a polyisocyanate mixture, a process for its production and its use as starting component in the production of polyurethane plastics. The invention further relates to coating agents containing the polyisocyanate mixture and to the substrates coated with said coating agents.

IPC Classes  ?

• C08G 18/02 - Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
• C08G 18/09 - Processes comprising oligomerisation of isocyanates or isothiocyanates involving reaction of a part of the isocyanate or isothiocyanate groups with each other in the reaction mixture
• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/36 - Hydroxylated esters of higher fatty acids
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/40 - High-molecular-weight compounds
• C08G 18/48 - Polyethers
• C08G 18/54 - Polycondensates of aldehydes
• C08G 18/65 - Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
• C08G 18/66 - Compounds of groups , , or
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/78 - Nitrogen
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/80 - Masked polyisocyanates
• C09D 175/02 - Polyureas
• C09D 175/04 - Polyurethanes
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds

Abstract

The present invention relates to a method for recovering valuable substances from polyurethane foams, the method comprising: (A) providing a polyurethane foam based on toluene diisocyanate and polyether polyol; (B) performing chemolysis of the polyurethane foam by reacting it with an organic chemolysis reagent and water, wherein the organic chemolysis reagent is selected from (i) a primary or secondary chemolysis amine, (ii) a chemolysis amino alcohol having a primary or secondary amino group, (iii) a chemolysis alcohol, or (iv) a mixture of two or more of the aforementioned organic chemolysis reagents; (C) distilling off the organic chemolysis reagent and optionally also the toluenediamine formed in (B) or portions thereof, wherein the distilling off may be preceded and/or followed by separation of solid components; (D) extracting polyether polyol using an organic solvent, wherein an acid and water are added, and, after separation of an acidic aqueous phase, a polyol phase is obtained; and (E) processing the polyol phase to recover at least one polyether polyol.

IPC Classes  ?

• C08J 11/24 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
• C08J 11/28 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus

Abstract

14144 alcohol, and the copolymer; and (E) processing the polyol phase to recover the copolymer.

IPC Classes  ?

• C08J 11/24 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
• C08J 11/28 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus

Abstract

The invention relates to a process for producing isocyanates by phosgenation of amines with phosgene, to the use thereof and to a phosgenation facility for carrying out the process.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
• B01D 1/00 - Evaporating

Abstract

cococo-carbonate) has a molar weight average of at least 40.000 g/mol and a defined ratio of carbonate groups and urethane groups.

IPC Classes  ?

• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08L 75/06 - Polyurethanes from polyesters

Abstract

The invention relates to an OH-terminated urethane prepolymer with defined build factor, to a process for preparing same and to the use of the prepolymer for polymer preparation.

IPC Classes  ?

• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08L 75/06 - Polyurethanes from polyesters

Abstract

cocoww of at least 40 000 g/mol to preferably 190 000 g/mol with viscous characteristics at room temperature. These polymers can be processed to give mouldings in common plastification processes.

IPC Classes  ?

• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08L 75/06 - Polyurethanes from polyesters

Abstract

The present invention relates to an aqueous polyurethane-urea dispersion comprising water and a polyurethane-urea, wherein the polyurethane-urea is obtained by at least partly deprotonating the reaction product of at least components (A)-(F): (A) from 60.0 to 80.0% by weight of one or more polyether polyols with a number average molecular weight of from 500 to 4000 g/mol and a hydroxy functionality from 1.9 to 2.1, wherein said polyether polyols comprise at least 65.0% by weight, based on the total weight of the polyether polyols (A), of one or more polytetrahydrofuran polyol, (B) from 5.0 to 12.0% by weight of one or more polyethers with a hydroxy functionality from 0.9 to 1.1 and a number average molecular weight of from 1500 to 2500 g/mol, (C) from 0.5 to 2.0% by weight of one or more isocyanate-reactive compounds containing at least one carboxylic acid group that can be converted into a salt group which is capable to render the polyurethane-urea dispersible in water, (D) from 0.4 to 2.0% by weight of one or more branching agents having a hydroxy functionality of 3.0 (D1) and/or from 1.0 to 5.0% by weight of one or more branching agents having an isocyanate functionality from 3.0 to 4.0 (D2), (E) from 10.0 to 30.0% by weight of one or more diisocyanates, (F) from 0.1 to 5.0% by weight of one or more amine functional chain extenders and/or one or more amine functional chain terminators, wherein the amounts of (A) to (F) are given based on the weight of the polyurethane-urea, and wherein said deprotonating is effected by reacting said reaction product with one or more amines and/or ammonia.

IPC Classes  ?

• C08G 18/08 - Processes
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C09D 175/02 - Polyureas
• C09D 175/04 - Polyurethanes
• C09D 175/08 - Polyurethanes from polyethers
• D06N 3/00 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof

Abstract

The present invention relates to a polyurethane foam with a relatively high biobased content. The present invention also relates to a method for preparing the polyurethane foam and an article comprising the polyurethane foam.

IPC Classes  ?

• C08G 18/36 - Hydroxylated esters of higher fatty acids
• C08G 18/40 - High-molecular-weight compounds
• C08G 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or

Abstract

The invention relates to the use of at least one organic dialkyl dicarbonate for reducing the content of acetone azine and/or butanone azine in an aqueous polyurethane-polyurea dispersion containing at least one polyurethane-polyurea and acetone azine and/or butanone azine; furthermore to a process for producing an aqueous polyurethane-polyurea dispersion having a reduced content of acetone azine and/or butanone azine; to an aqueous polyurethane-polyurea dispersion containing at least one polyurethane-polyurea and at least one alkyl carbazate; and to an article, cosmetic, coating, adhesive layer, coating formulation, adhesive formulation and/or cosmetic formulation obtainable therefrom.

IPC Classes  ?

• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08L 75/02 - Polyureas
• C08L 75/04 - Polyurethanes

Abstract

The present invention relates to the use of at least one organic dialkyl dicarbonate for reducing the content of nitrogen compounds in an aqueous polyurethane-polyurea dispersion containing at least one polyurethane-polyurea and at least one nitrogen compound, wherein the nitrogen compound is selected from hydrazine, amines and mixtures thereof, wherein the amines have at least one primary and/or secondary amino group, no carbonyl groups and a molecular weight in the range from 31 to 1000 g/mol. The invention also relates to a process for producing an aqueous polyurethane-polyurea dispersion having a reduced content of nitrogen compounds, to an aqueous polyurethane-polyurea dispersion which is obtained or is obtainable by the process according to the invention, and also to an article, cosmetic, coating, adhesive layer, coating formulation, adhesive formulation and/or cosmetic formulation which is obtainable therefrom.

IPC Classes  ?

• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08L 75/02 - Polyureas
• C08L 75/04 - Polyurethanes

Abstract

The present invention relates to aqueous polyurethane dispersion containing at least one polyurethane, at least one organic dialkyl dicarbonate and at least one compound having a biocidal effect which is distinct from the organic dialkyl dicarbonate, characterized in that the at least one organic dialkyl dicarbonate is selected from the group consisting of dimethyl dicarbonate, diethyl dicarbonate, dipropyl dicarbonate, diisopropyl dicarbonate, methyl ethyl dicarbonate, di-tert-butyl dicarbonate and/or mixtures of at least two of these, further to the use of organic dialkyl dicarbonates for reducing microorganisms in an aqueous polyurethane dispersion, to a process for producing an aqueous polyurethane dispersion comprising a reduced amount of microorganisms and to an article, cosmetic, coating, adhesive layer, coating formulation, adhesive formulation and/or cosmetic formulation obtainable therefrom.

IPC Classes  ?

• C08L 75/04 - Polyurethanes
• C08K 5/00 - Use of organic ingredients
• C08K 5/105 - EstersEther-esters of monocarboxylic acids with phenols

Abstract

The present invention relates to a isocyanate-reactive component, to a method for producing a polyurethane foam using the isocyanate-reactive component, to the polyurethane foam and to a use of the isocyanate-reactive component for producing the polyurethane foam.

IPC Classes  ?

• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• C08G 18/40 - High-molecular-weight compounds
• C08G 18/48 - Polyethers
• C08G 18/63 - Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/80 - Masked polyisocyanates

Abstract

The present application relates to a water-dispersible blocked isocyanate prepolymer system, a method for preparing the same, and an application thereof. The blocked isocyanate prepolymer system is prepared by reaction of an isocyanate comprising two or more isocyanate groups, a blocking agent, a non-hydrophilic polyhydroxyl compound and an active hydrogen compound comprising a hydrophilic group. The blocked isocyanate prepolymer system of the present invention is water- dispersible, and can be processed into various products for a wide range of applications.

IPC Classes  ?

• C08G 18/08 - Processes
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/48 - Polyethers
• C08G 18/67 - Unsaturated compounds having active hydrogen
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/80 - Masked polyisocyanates
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/58 - Epoxy resins
• C08G 18/34 - Carboxylic acidsEsters thereof with monohydroxyl compounds
• C09D 175/08 - Polyurethanes from polyethers
• C09J 175/08 - Polyurethanes from polyethers

Abstract

2023PF30086-Foreign Countries - 23 - BLOCKED ISOCYANATE PREPOLYMER SYSTEM, METHOD FOR PREPARING THE SAME, AND APPLICATION THEREOF A b s t r a c t The present application relates to a blocked isocyanate prepolymer system, a method for preparing the same, and an application thereof. The blocked isocyanate prepolymer system is prepared by reacting an isocyanate comprising two or more isocyanate groups first with a blocking agent and then with a polyhydroxyl compound. The blocked isocyanate prepolymer system of the present invention can be processed into various products for a wide range of applications. In addition, the blocked isocyanate prepolymer system of the present invention remains low in viscosity even if it is not diluted by a solvent, and therefore is conducive for subsequent use.

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/67 - Unsaturated compounds having active hydrogen
• C08G 18/48 - Polyethers
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/80 - Masked polyisocyanates
• C08G 18/81 - Unsaturated isocyanates or isothiocyanates
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C09D 175/04 - Polyurethanes
• C09D 175/08 - Polyurethanes from polyethers

Abstract

The present invention relates to a method for reducing the content of free BPA of a moulding compound, comprising the steps of a) providing a moulding compound containing A) at least one polycarbonate and/or polyester carbonate each containing structure units derived from bisphenol-A, wherein the moulding compound is free of vinyl polymers and olefin polymers, which are each functionalised with OH-reactive groups and wherein the moulding compound contains either as component C at least one inorganic filler and/or at least one base organic colourant according to component D or wherein the polycarbonate and/or polyester carbonate according to component A is a recycled material b) melting and mixing the moulding compound at a temperature of 200 °C to 350 °C with a polymer B selected from the group consisting of vinyl polymers and olefin polymers, which are each functionalised with OH-reactive groups, c) solidifying the melt by way of cooling, wherein at the start of method step a) the moulding compound has a content of free bisphenol-A of at least 20 ppm. The invention also relates to a moulding compound which can be obtained by the method, and to a moulded body containing a moulding compound which can be obtained by the method.

IPC Classes  ?

• C08G 64/40 - Post-polymerisation treatment
• C08G 64/06 - Aromatic polycarbonates not containing aliphatic unsaturation
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

The present invention relates to a method for preparing a polyisocyanate based on 1,5-pentamethylene diisocyanate, comprising reacting an isocyanate component, containing at least 1,5-pentamethylene diisocyanate, in the presence of at least one catalyst and optionally in the presence of one or more co-reagents, comprising alcohols, amines, water and carbon dioxide, to obtain a raw polyisocyanate, characterised in that, in a further step, the raw polyisocyanate is distilled at a temperature range of 155 °C to 175 °C and, in a further step, the polyisocyanate based on pentamethylene diisocyanate is obtained. The invention also relates to a polyisocyanate based on 1,5-pentamethylene diisocyanate, a two-component system, the use thereof for the production of a coating on a substrate, the coating and the composite formed of the coating and the substrate.

IPC Classes  ?

• C08G 18/02 - Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates

Abstract

The present invention relates to a waterborne polyurethane composition comprising the following components a liquid medium, comprising at least one organic liquid, having a solubility in water of ≥4 g organic liquid/100 g water at 25 °C, and water, at least one polyurethane polymer compound dispersed in the liquid medium, optionally at least one coating formulation ingredient, characterized in, that said polyurethane composition further comprises at least one thickener comprising at least one anionic polymer selected from the group consisting of anionic polyacrylamide, anionic polymethylacrylamide, anionic polyacrylamide-polymethylacrylamide and / or a mixture of at least two thereof, and optionally at least one compound selected from the group consisting of unbound or ionically bound organic amines, ammonia or mixtures of at least two thereof, in an amount of 0 to 0.12 wt.%, preferably in an amount of 0 to 0.05 wt.%, more preferably in an amount of 0 to 0.01 wt.%, based on the total weight of the waterborne polyurethane composition being 100 wt.%, wherein the waterborne polyurethane composition has a pH value of ≤ 8.5 and wherein the at least one thickener is different to the at least one coating formulation ingredient and the at least one polyurethane polymer. The invention further relates to a kit-of-parts for production of a waterborne polyurethane composition, a method for the production of a waterborne polyurethane composition and the use of a waterborne composition.

IPC Classes  ?

• C08G 18/08 - Processes
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/44 - Polycarbonates
• C08G 18/66 - Compounds of groups , , or
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08L 75/04 - Polyurethanes

Abstract

The present invention relates to a method for producing composite components with improved interlaminar bonding, the components comprising a carrier, a layer (B) and at least one polyurethane layer that is in direct contact with the layer (B). The invention also relates to composite components with improved interlaminar bonding.

IPC Classes  ?

• B29C 45/16 - Making multilayered or multicoloured articles
• C08J 5/12 - Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
• C08J 7/16 - Chemical modification with polymerisable compounds
• B29C 37/00 - Component parts, details, accessories or auxiliary operations, not covered by group or
• B29C 67/24 - Shaping techniques not covered by groups , or characterised by the choice of material
• B29K 69/00 - Use of polycarbonates as moulding material
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material

Abstract

The present invention relates to a method for producing a plastic compound having improved properties from a formulation containing at least two thermoplastic components in a multi-shaft screw machine having screw shafts rotating in the same direction, in parallel and at the same speed, wherein the plastic compound (i) does not comprise an additive which is flowable at 23°C or (ii) comprises precisely one additive which is flowable at 23°C, or (iii) comprises at least two additives which are flowable at 23°C. The present invention relates in particular to the production of a plastic compound from a formulation containing at least two thermoplastic components, at least one of which is a polycarbonate. More particularly, the screw machine is a twin-screw extruder having screw shafts rotating in the same direction, in parallel and at the same speed.

IPC Classes  ?

• B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
• B29C 48/29 - Feeding the extrusion material to the extruder in liquid form
• B29C 48/405 - Intermeshing co-rotating screws

Abstract

The present invention relates to a particular process for producing a hydroxyl-group terminated polyesterol via a two-step polycondensation reaction, to the polyesterol obtained by way of this process, and to the use of these polyesterols for producing polyurethanes.

IPC Classes  ?

• C08G 63/16 - Dicarboxylic acids and dihydroxy compounds
• C08G 63/78 - Preparation processes
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 63/181 - Acids containing aromatic rings

Abstract

12345122 is different from hydrogen; and E) optionally, at least one further polymer additive is different from components A to D. The invention also relates to the molding compound obtained from the composition, to moldings produced from the composition or the molding compound and to the use of specific carboxylic acids for reducing the free bisphenol A content in molding compounds and moldings that contain polycarbonate and/or polyester carbonate containing structural units derived from bisphenol A and at least one inorganic filler.

IPC Classes  ?

• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 5/092 - Polycarboxylic acids
• C08K 3/22 - OxidesHydroxides of metals
• C08K 3/34 - Silicon-containing compounds
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

The present invention relates to a process for producing, by way of melt transesterification, a polyester carbonate containing at least one 1,4:3,6-dianhydrohexitol, the process comprising a defined temporal sequence of reactions. The obtained polyester carbonates are of good color and have high molecular weights. The invention further relates to a polyester carbonate which can be obtained using the process of the invention as well as to a molding containing the polyester carbonate according to the invention.

IPC Classes  ?

• C08G 63/64 - Polyesters containing both carboxylic ester groups and carbonate groups
• C08G 64/30 - General preparatory processes using carbonates
• C08G 63/78 - Preparation processes

Abstract

The invention relates to a copoly(ester) carbonate of defined units (A), (B) and (C) with defined amount proportions, wherein said structure and amount ratios cause the copoly(ester) carbonate to have excellent stability in aqueous media and also against other chemicals such as rapeseed oil, lipid solution or organic solvents. The present invention also relates to a composition containing the copoly(ester) carbonate according to the invention, a moulding containing the copoly(ester) carbonate according to the invention, and to a method for producing the copoly(ester) carbonate according to the invention.

IPC Classes  ?

• C08G 63/64 - Polyesters containing both carboxylic ester groups and carbonate groups
• C08G 64/30 - General preparatory processes using carbonates

Abstract

The invention relates to an improved process for producing double metal cyanide (DMC) catalysts for producing polyoxyalkylene polyols, preferably polyether polyols and/or polyether carbonate polyols. The invention also relates to DMC catalysts which are obtainable by means of this process, and to the use of the catalysts according to the invention for producing polyoxyalkylene polyols.

IPC Classes  ?

• B01J 27/26 - Cyanides
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
• B01J 31/06 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
• B01J 37/03 - PrecipitationCo-precipitation
• B01J 37/04 - Mixing
• C08G 65/26 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds

Abstract

The present invention relates to a reactor (1000) configured to nitrate a stoichiometric excess of an aromatic compound (1) with nitric acid (2) in the presence of sulfuric acid (3) in a continuous process under adiabatic conditions, the reactor (1000) comprising a plurality of static dispersion elements (310) arranged in a spaced-apart relationship to form a plurality of reaction chambers (400) inside the reactor (1000), wherein at least one of the reaction chambers (400) has a largest cross-sectional area (420') that is larger than that of the in flow direction preceding reaction chamber (400), and at least two of the reaction chambers (400) have an internal volume that is larger than that of the in flow direction preceding reaction chamber (400). The present invention also relates to a production plant for producing a nitrated aromatic compound, comprising the reactor (1000) according to the invention, and to a continuous process for producing a nitrated aromatic compound, comprising adiabatically reacting an aromatic compound (1) with nitric acid (2) in the presence of sulfuric acid (3) in the reactor of the invention (1000) or in the production plant of the invention.

IPC Classes  ?

• B01J 4/00 - Feed devicesFeed or outlet control devices
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
• B01J 19/24 - Stationary reactors without moving elements inside
• C07C 201/08 - Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
• C07C 205/06 - Compounds containing nitro groups bound to a carbon skeleton having nitro groups bound to carbon atoms of six-membered aromatic rings

Abstract

The present invention relates to radiation-curable polyurethane dispersions having a particularly high double-bond density. These polyurethane dispersions can be used independently as coating agents, or especially advantageously added to conventional polyacrylate dispersions or to radiation-curing polyurethane dispersions in order to improve the properties in use thereof.

IPC Classes  ?

• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/34 - Carboxylic acidsEsters thereof with monohydroxyl compounds
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/81 - Unsaturated isocyanates or isothiocyanates
• C09D 175/14 - Polyurethanes having carbon-to-carbon unsaturated bonds

Abstract

The present invention is directed to the use of a waterborne adhesive composition for the adhesive bonding of one or more substrates after at least partial coagulation of the waterborne adhesive composition and while the at least partially coagulated waterborne adhesive composition is still in a wet state, wherein the waterborne adhesive composition comprises a waterborne dispersion comprising dispersed polymer particles comprising both (i) a polyurethane and (ii) a vinyl polymer, said dispersed particles comprising the polyurethane and the vinyl polymer in a weight ratio of the polyurethane to the vinyl polymer in the range from 25:75 to 90:10, and the polyurethane-vinyl polymer comprises a crystalline phase having a melting temperature in the range from 30 to 80 °C and an enthalpy of fusion of at least 10 J/g, whereby the melting temperature and the enthalpy of fusion are determined by differential scanning calorimetry according to DIN EN ISO 11357-1:2017 (2017-02) at a heating rate of 20 K/min, and wherein the adhesive bonding is effected at a temperature below the melting temperature of the polyurethane-vinyl polymer.

IPC Classes  ?

• C08F 283/00 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass
• C08G 18/08 - Processes
• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/66 - Compounds of groups , , or
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C09J 175/06 - Polyurethanes from polyesters
• C09J 151/08 - Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsAdhesives based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Abstract

The present invention is directed to a waterborne dispersion for use in an adhesive composition, wherein the dispersion comprises dispersed polymer particles comprising both (i) a polyurethane and (ii) a vinyl polymer, wherein said dispersed particles comprising the polyurethane and the vinyl polymer in a weight ratio of the polyurethane to the vinyl polymer higher than 1, and the polyurethane-vinyl polymer comprises a crystalline phase having a melting temperature in the range from 30 to 80 °C and an enthalpy of fusion of at least 15 J/g, whereby the melting temperature and the enthalpy of fusion are determined by differential scanning calorimetry according to DIN EN ISO 11357-1:2017 (2017-02) at a heating rate of 20 K/min.

IPC Classes  ?

• C08G 18/08 - Processes
• C08F 283/00 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/66 - Compounds of groups , , or
• C08G 18/70 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C09J 175/04 - Polyurethanes
• C09J 175/06 - Polyurethanes from polyesters
• B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes

Abstract

The present invention relates to a process for diisocyanate distillation, comprising steps A) providing a distillation system, B) distilling, in the distillation system, a composition essentially containing pentamethylene diisocyanate, characterized in that after step B), step C) is carried out, consisting in distilling, in the distillation system, a composition essentially containing a diisocyanate other than pentamethylene diisocyanate, so as to obtain a distillate.

IPC Classes  ?

• C07C 263/20 - SeparationPurification
• B01D 3/42 - RegulationControl
• C07B 63/00 - PurificationSeparation specially adapted for the purpose of recovering organic compoundsStabilisationUse of additives

Abstract

The present invention relates to a method for providing a granulate suitable for combustion from the residue of distilling toluylene diisocyanate obtained by gas-phase phosgenation, to a granulate suitable for combustion obtained using the method according to the invention, and to the use of the granulate according to the invention as a fuel, in particular also as a substitute fuel for fuels such as coal, crude oil or natural gas, in a combustion plant.

IPC Classes  ?

• C10L 5/48 - Solid fuels essentially based on materials of non-mineral origin on industrial residues or waste materials
• C07C 263/20 - SeparationPurification
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton

Abstract

By means of a device for compressing gas of a gas stream, comprising: at least one supply line (2) for a gas stream containing at least one gaseous compound to a compressor unit (4), and at least one discharge line (3) for discharging the compressed gas stream from said compressor unit; said compressor unit (4), comprising at least one first compressor stage (1) and a final compressor stage (F), wherein the supply line (2) is fluidically connected to the gas inlet of the first compressor stage (1) and the gas outlet of the first compressor stage (1) is fluidically connected to the gas inlet of a last cooling device (WA00F), and the gas outlet of the last cooling device (WA00F) is fluidically connected to the gas inlet of the final compressor stage (F), and the discharge line (3) is fluidically connected to the gas outlet of the final compressor stage (F); at least one first bypass (6a), which connects the discharge line (3) to the fluid connection located between the last cooling device (WA00F) and the compressor stage immediately before it, wherein by means of a first through-flow regulator (5a) which is located in the first bypass (6a) and comprises at least one valve (10), the gas amount conducted in the bypass gas stream can be controlled and as a result the through-flow of the gas stream through the final compressor stage (F) can be regulated; at least one second bypass (6b) provided with a second through-flow regulator (5b), wherein said bypass connects the fluid connection located between the last cooling device (WA00F) and the final compressor stage (F) to the supply line (2), and by means of a corresponding method that can be carried out using this device, the compressor stall of the compressor unit (4) can be better coordinated to the individual compressor stages and condensation of the returned, compressed gas stream can be avoided. The finally compressed gas stream produced by the method provides a compressed, hot gas that can be used to integrate heat into process steps following compression.

IPC Classes  ?

• F04D 27/02 - Surge control
• F04D 29/58 - CoolingHeatingDiminishing heat transfer
• C01B 7/00 - HalogensHalogen acids
• F04D 17/12 - Multi-stage pumps

Abstract

The present invention relates to the production of an isocyanate by reacting a primary amine with phosgene by way of a gas phase reaction in several gas phase reaction arrangements connected in parallel. Excess phosgene not reacted in the gas phase reaction is returned, as a return flow, to a phosgene gas generation device to form a phosgene gas stream and a state parameter of the formed phosgene gas steam is set by means of a setting parameter of the return flow. This concept enables stable reaction conditions of the gas phase reaction, in particular a stable stoichiometric phosgene excess in the gas phase reaction arrangements, to be ensured.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
• B01J 3/02 - Feed or outlet devices therefor
• G06F 13/10 - Program control for peripheral devices

Abstract

2n2nn units, based on the total weigh of the adhesive, where n is a number from 2 to 50.

IPC Classes  ?

• B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes
• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C09J 175/10 - Polyurethanes from polyacetals
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
• B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins

Abstract

The present invention provides a potting device for a battery module, which is capable of simultaneous multi-station pouring, ensures that the potting material is completely poured before foaming begins, greatly improves the potting efficiency, and is applicable to various battery module designs, has low cost for component replacement, is easy to clean, and resulting in the potting material having a consistent height and a good homogeneity, and free of defects such as bubbles and blisters. The present invention also provides a method for potting a battery module and a battery module obtained therefrom, which is particularly suitable for electric vehicles as their power source.

IPC Classes  ?

• H01M 50/227 - Organic material
• H01M 50/24 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
• H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
• H05K 5/06 - Hermetically-sealed casings
• B05C 5/02 - Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work from an outlet device in contact, or almost in contact, with the work

Abstract

The present invention relates to polyurethanes and polyurethane dispersions based on polyethers obtainable from renewable sources, particularly biomass.

IPC Classes  ?

• C08G 18/08 - Processes
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/40 - High-molecular-weight compounds
• C08G 18/44 - Polycarbonates
• C08G 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C09D 175/04 - Polyurethanes
• C09D 175/06 - Polyurethanes from polyesters
• C09D 175/08 - Polyurethanes from polyethers
• D06N 3/14 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds with polyurethanes

Abstract

efefef is defined in accordance with DIN EN ISO 11357. The polymer starting material has a water content of ≥ 3 weight-% to ≤ 35 weight-% based on the total weight of the polymer starting material and the temperature of the extruded polymer material is ≥ 30 °C to ≤ 100 °C.

IPC Classes  ?

• B29B 7/72 - Measuring, controlling or regulating
• B29B 7/84 - Venting or degassing
• B29B 9/12 - Making granules characterised by structure or composition
• B29B 9/16 - Auxiliary treatment of granules
• B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
• C09J 175/06 - Polyurethanes from polyesters
• B29B 7/82 - Heating or cooling
• C08J 3/00 - Processes of treating or compounding macromolecular substances
• C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
• C08L 3/00 - Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
• B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
• B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
• B29B 7/88 - Adding charges

Abstract

The invention relates to a method for preparing isocyanurate-group-containing polyisocyanates P by trimerising • A) at least one organic di- or polyisocyanate with isocyanate groups bound aliphatically, cycloaliphatically and/or araliphatically independently of one another in the presence of • B) at least one trimerisation catalyst selected from the group consisting of quaternary tetraalkylammonium hydroxides, quaternary trialkylarylammonium hydroxides and hydroxyalkyl-substituted quaternary ammonium hydroxides of the choline type and • C) at least one alcohol as solvent.

IPC Classes  ?

• C08G 18/09 - Processes comprising oligomerisation of isocyanates or isothiocyanates involving reaction of a part of the isocyanate or isothiocyanate groups with each other in the reaction mixture
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• C07D 251/34 - Cyanuric or isocyanuric esters

Abstract

The present invention relates to a polycarbonate composition comprising the following components, relative to the total weight of the composition， A) 90-99 wt.% of an aromatic polycarbonate, B) 0.2-0.8 wt.% of a sulfonated polyester, C) 0.5-3.5 wt.% of a core-shell impact modifier selected from the group consisting of methyl methacrylate-butadiene-styrene (MBS), acrylonitrile-butadiene-styrene (ABS), silicone-acrylate rubber based impact modifiers and combinations thereof, and D) 0.2-0.5 wt.% of polytetrafluoroethylene. The present invention also relates to a shaped article made from the composition. The polycarbonate composition according to the present invention has a good combination of flame retardancy and impact strength.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
• C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds

Abstract

The invention relates to a method for preparing a polyoxyalkylene polyol comprising attaching an alkylene oxide (A) to an H-functional starter substance (B) in the presence of a basic catalyst (C) with the formation of an intermediate (D), followed by vacuum-treating the intermediate (D) at pressures of 1 mbara to 500 mbara with the formation of an intermediate (E). Then, an alkylene oxide (F) is attached to this intermediate (E) with the formation of an alkaline polyoxyalkylene polyol (H) and then water is added with the formation of a mixture (J) comprising a first phase (J-1) containing the polyoxyalkylene polyol and a second aqueous phase (J-2). Then, the second aqueous phase (J- 2) is separated from the first phase (J-1) containing the polyoxyalkylene polyol via gravitation. The addition of the alkylene oxide (A) ends before the vacuum treatment and the addition of the alkylene oxide (F) is not started until after the vacuum treatment has been completed.

IPC Classes  ?

• C08G 65/26 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds

Abstract

The present invention relates to a polyisocyanate composition comprising at least one bridging cistetrahydrofuran-2,5-diyl-dimethylene unit and at least one isocyanurate, iminooxadiazinedione, allophanate, urethane, urea, uretdione, oxadiazinetrione, carbodiimide, thiourethane, thioallophanate and/or biuret structure and/or comprising at least one bridging trans-tetrahydrofuran-2,5-diyl)-dimethylene unit and at least one isocyanurate, iminooxadiazinedione, allophanate, urethane, urea, uretdione, oxadiazinetrione, carbodiimide, thiourethane, thioallophanate and/or biuret structure.

IPC Classes  ?

• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/77 - Polyisocyanates or polyisothiocyanates having hetero atoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08L 75/14 - Polyurethanes having carbon-to-carbon unsaturated bonds
• C08L 75/16 - Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
• C09D 175/14 - Polyurethanes having carbon-to-carbon unsaturated bonds
• C09D 175/16 - Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds

Abstract

A process for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound with a bisepoxide compound in the presence of a catalyst optionally in a solvent, wherein one or more specific bisepoxide compounds are used. The invention is also related to the resulting thermoplastic polyoxazolidinone.

IPC Classes  ?

• C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic

Abstract

The invention relates to a method for producing aliphatic diisocyanates by reacting the corresponding aliphatic diamines with phosgene in the gas phase.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton

Abstract

The invention is related to a process for producing a hydroxyl-group terminated oxazolidinone composition comprising the reaction of a polyisocyanate compound with two or more isocyanate groups with glycerol carbonate and optionally in a solvent, wherein the molar ratio of the compound (B) to the isocyanate groups of the polyisocyanate compound (A) is at least 1.5:1, and wherein the process comprises a step in which a catalyst (C) is present. The invention is also related to the resulting hydroxyl-group terminated oxazolidinone and a process for producing a hydroxyl-group terminated oxazolidinone by removal of a solvent and/or unreacted glycerol carbonate.

IPC Classes  ?

• C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic

Abstract

The present application provides a process for producing an isocyanate-terminated prepolymer comprising the reaction of a polyisocyanate compound A) with an isocyanate-reactive compound B) and optionally a subsequent step to reduce residual monomer content, wherein - the polyisocyanate compound A) comprises at least 30 wt.-%, based on the weight of the polyisocyanate compound A), penthamethylene diisocyanate, preferably at least 50 wt.-%, more preferably at least 70 wt.-%, and - the isocyanate-reactive compound B) comprises at least 80 wt.-%, based on the weight of isocyanate-reactive compounds B), of (I) poly(1,3-propanediol) with a number average molar mass in the range of from 100 g/mol to 1300 g/mol, or (II) poly(ε-caprolactone) with an OH-functionality of 2 and a number average molar mass in the range of from 160 g/mol to 800 g/mol, or (III) any combination of (I) and (II).

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/48 - Polyethers
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C09D 175/04 - Polyurethanes

Abstract

The present invention relates to the use of polyurethane elastomers based on and to the use of kit-of- parts comprising MDI-polyadipate prepolymers and polyamine chain-extenders in pulp and paper applications, especially in the manufacture of die cutting pads, anvil covers, zero crush wheels and rollers, wherein the resulting products exhibit good dynamic performances, especially in terms of elongation and tear resistance.

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic

Abstract

The present invention relates to a resin reaction system containing a special inhibitor pack and its use for producing urethane hybrid resins, to a method for producing urethane hybrid resins using the inhibitor pack, and to urethane hybrid resins that were produced using the inhibitor pack.

IPC Classes  ?

• C08G 18/67 - Unsaturated compounds having active hydrogen
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08F 290/06 - Polymers provided for in subclass
• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/48 - Polyethers
• C08L 75/16 - Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds

Abstract

The present application relates to a flame retardant polycarbonate composition and shaped articles made therefrom. The polycarbonate composition comprises the following components: an optional virgin aromatic polycarbonate, a post-consumer recycled (PCR) aromatic polycarbonate, a flame retardant, two impact modifiers, a UV absorber and an anti-dripping agent. The shaped article made from the polycarbonate composition according to the present invention has a good combination of mechanical properties such as impact strength, flame retardancy, and UV resistance.

IPC Classes  ?

• C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
• C08K 5/5399 - Phosphorus bound to nitrogen
• C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

The invention relates to a security document S having a first outer side AS1 and a second outer side AS2 opposite the first outer side AS1 comprising at least: A5. a first polymer film A1, A6. optionally a second polymer film A2, A7. optionally at least one further polymer film A3, A8. a printing layer A4, 10, wherein at least the first polymer film A1 comprises a thermoplastic polyurethane TPU having a hardness in a range from 80 Shore A to 95 Shore D, preferably from 85 Shore A to 90 Shore D, particularly preferably from 90 Shore A to 85 Shore D, very particularly preferably from 95 Shore A to 80 Shore D, in an amount in a range from 50% to 100% by weight based on the total weight of the first polymer film A1 and forms at least the outer side AS1 of the security document S and wherein the printing layer A4 covers the surface of the security document S in a range from 1% to 100% based on the total surface area of the surface AS1, and to a process for producing such a security document S and to the use thereof and to the use of a TPU having a Shore hardness in a range from 80 Shore A to 95 Shore D for producing a polymer film A1 which is printable with dyes of the class of offset printing inks, flexographic printing inks, screen printing inks, digital printing inks with a resolution of 20 µm to 500 µm.

IPC Classes  ?

• B42D 25/36 - Identification or security features, e.g. for preventing forgery comprising special materials
• B42D 25/29 - Securities Bank notes
• B42D 25/24 - Passports
• B42D 25/455 - Associating two or more layers using heat
• B42D 25/46 - Associating two or more layers using pressure
• B42D 13/00 - Loose leaves modified for bindingInserts
• B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes
• B29C 48/18 - Articles comprising two or more components, e.g. co-extruded layers the components being layers

Abstract

The present invention relates to the use of an aqueous dispersion for production of storage-stable and latently reactive adhesives, wherein the aqueous dispersion contains at least the following dispersed components: (A) at least one semicrystalline or crystalline polyurethane polymer containing carboxyl groups which has a melting temperature in the range of 35 to 80°C, an enthalpy of fusion of ≥ 15 J/g and a partial acid number in the range from 0.8 mg KOH/g to 25 mg KOH/g; (B) at least one polycarbodiimide, at least one polyaziridine and/or a mixture thereof, where the at least one polycarbodiimide and the at least one polyaziridine have a glass transition temperature in the range from -150°C to 30°C; (C) optionally at least one further polymer other than the at least one polymer (A); and (D) optionally at least one additive other than components (A), (B) and (C). In addition, a method of bonding at least two substrates or at least two surface regions of a substrate and an adhesive bond.

IPC Classes  ?

• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/08 - Processes
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/34 - Carboxylic acidsEsters thereof with monohydroxyl compounds
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08L 75/02 - Polyureas
• C08L 75/04 - Polyurethanes
• C08L 75/06 - Polyurethanes from polyesters
• C09J 175/02 - Polyureas
• C09J 175/06 - Polyurethanes from polyesters

Abstract

The invention relates to an aqueous adhesive formulation in the form of an aqueous dispersion containing at least the following dispersed components: (A) at least one polymer selected from the group consisting of polyurethane polymers, vinyl polymers, polyester polymers and/or mixtures of at least two thereof, the polymer having a partial acid number of < 1.25 mg KOH/g determined in accordance with DIN EN ISO 2114:2000 (2002-06, Method A with an acetone-ethanol solvent mixture); (B) at least one semicrystalline or crystalline polyurethane polymer containing carboxyl groups which has a melting temperature in the range of 35 to 80°C, an enthalpy of fusion of ≥ 15 J/g, each determined by DSC (differential scanning calorimetry) at a heating rate of 20 K/min in accordance with DIN EN ISO 11357-1:2017 (2017-02), and has a partial acid number in the range from 1.25 mg KOH/g to 25 mg KOH/g, determined in accordance with DIN EN ISO 2114:2000 (2002-06, Method A with an acetone-ethanol solvent mixture); (C) at least one polycarbodiimide and/or at least one polyaziridine and/or a mixture thereof; and (D) optionally at least one further polymer other than the at least one polymer (A) and the at least one polyurethane polymer (B). It further relates to a corresponding kit-of-parts, to a process for producing the aqueous adhesive formulation, the uses of the adhesive formulation, and to articles that have been produced using the adhesive formulation.

IPC Classes  ?

• C08G 18/08 - Processes
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08L 75/06 - Polyurethanes from polyesters
• C09J 175/06 - Polyurethanes from polyesters

Abstract

The present invention relates to the use of esterified ethanolamines as catalysts for the cross-linking of isocyanate groups which are aliphatically and/or cyclo-aliphatically bonded. The catalysts according to the invention have the particular advantage that they are thermally latent.

IPC Classes  ?

• C08G 18/02 - Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
• C07C 67/00 - Preparation of carboxylic acid esters

Abstract

The invention relates to processes for preparing a mixture that contains a polyoxyalkylene polyol, preferably a polyether polyol, to the mixtures obtainable by the process and to a mixture that contains a polyoxyalkylene polyol, preferably a polyether polyol and an alkoxylated oxoacid of phosphorus.

IPC Classes  ?

• C08G 65/26 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds

Abstract

The invention relates to a method for the production of a thermoplastic polyurethane powder by means of precipitation polymerisation, comprising the steps of: i. providing A) a solvent mixture comprising at least one first aprotic solvent Al) with a relative permittivity of 3 to 20 and at least one second aprotic polar solvent A2) with a relative permittivity of at least 24; B) at least one polyol with a molar mass of between 60 g/mol and 250 g/mol; C) at least one diisocyanate; ii. reacting the polyol B) with the diisocyanate C) in the solvent mixture A) at a temperature of max. 150 °C to form the thermoplastic polyurethane, wherein the thermoplastic polyurethane precipitates as a solid in the solvent mixture A) and forms a dispersion; iii. separating from the solvent mixture; and iv. drying the thermoplastic polyurethane to form the thermoplastic polyurethane powder; wherein the thermoplastic polyurethane powder has a mass average of the molar mass Mw of > 35000 g/mol; an allophanate content of < 0.25 mol% in relation to the total thermoplastic polyurethane powder; and > 25.0 wt% of a particle fraction of < 0.500 mm, in relation to the total thermoplastic polyurethane powder and/or a ratio of z-average of the molar mass Mz to the mass average of the molar mass Mw of < 4.0.

IPC Classes  ?

• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• B29C 64/00 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering

Abstract

The invention relates to a pair of three-lead screw elements for a multi-shaft screw machine having screw shafts rotating in the same direction and at the same speed. The two screw elements of the pair of screw elements according to the invention, opposing each other directly adjacently on two directly adjacent screw shafts, are mutually cleaned in a practical manner. The invention also relates to the use of the pair of screw elements according to the invention in a multi-shaft screw machine, to a multi-shaft screw machine equipped with a pair of screw elements according to the invention, and to a method for extruding plastic or viscoelastic compounds using the pair of screw elements according to the invention.

IPC Classes  ?

• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders
• B29C 48/405 - Intermeshing co-rotating screws
• B29C 48/25 - Component parts, details or accessoriesAuxiliary operations
• B29C 48/54 - Screws with additional forward-feeding elements
• B29C 48/55 - Screws having reverse-feeding elements
• B29C 48/57 - Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
• B29C 48/655 - Screws with two or more threads having three or more threads
• B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws

Abstract

The invention relates to a method for the production of a thermoplastic polyurethane comprising the steps of: i. producing an aliphatic hydroxy-terminated prepolymer via precipitation polymerisation by reacting at least one aliphatic polyol with at least one polyisocyanate in an aprotic solvent and then separating the obtained hydroxy-terminated prepolymer, wherein the obtained aliphatic hydroxy-terminated prepolymer has a characteristic value for the reaction of the hydroxy groups of at least 0.850 to max. 0.970, a mass average of the molar mass Mw of < 30000 g/mol and an allophanate content of < 0.1 mol%; ii. reacting the hydroxy-terminated prepolymer obtained in step i. with a polyisocyanate in an extruder via reactive extrusion to form the thermoplastic polyurethane, wherein the thermoplastic polyurethane has a characteristic value for the reaction of hydroxy groups of > 0.980, a mass average of the molar mass Mw of > 45,000 g/mol and an allophanate content of < 0.2 mol%; wherein the characteristic value for the reaction of the hydroxy groups, the mass average of the molar mass Mw and the allophanate content are each determined by the methods set out in the description.

IPC Classes  ?

• C08G 18/08 - Processes
• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/48 - Polyethers
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic

Abstract

The present invention relates to a process for producing a single-layer polyurethane coated plastic substrate, comprising or consisting of the following steps: a) providing a plastic substrate; b) applying a polyurethane coating system onto the substrate; c) curing the polyurethane coating system to form the single-layer polyurethane coated plastic substrate; wherein the polyurethane coating system comprises or consists of A) at least one polyisocyanate; B) at least one NCO-reactive compound; C) at least one thermally latent catalyst; D) optionally auxiliaries and/or additives.

IPC Classes  ?

• C08G 18/08 - Processes
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/44 - Polycarbonates
• C08G 18/78 - Nitrogen
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C09D 175/06 - Polyurethanes from polyesters

Abstract

The invention relates to a method for producing re-expandable foamed polycarbonate beads as well as to the corresponding beads themselves which can be used as propellant-free beads for producing molded parts, even molded parts with complex 3D geometries, in the form of drop-in technology in steam molding machines already used for EPP production at average pressures of 4 to 6 bar and which lead to molded parts with an excellent compact and closed surface structure.

IPC Classes  ?

• C08J 9/12 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
• B29C 44/44 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in the form of expandable particles or beads
• C08G 64/00 - Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
• C08J 9/16 - Making expandable particles
• C08G 64/42 - Chemical after-treatment
• C08J 9/232 - Forming foamed products by sintering expandable particles