Abstract

The invention relates to a polycarbonate containing structural units derived from bisphenol A and A) structural units that are derived from a hydroxybenzoic acid, are present as end groups, and have free COOH functionality and B) structural units that are optionally derived from a hydroxybenzoic acid, wherein component B) is selected from at least one representative from B1) structural units that are derived from a hydroxybenzoic acid, are present as end groups, and have esterified COOH functionality, and B2) structural units that are derived from a hydroxybenzoic acid and are incorporated into the polymer chain via an ester or acid anhydride group, wherein the content of free bisphenol A in the polycarbonate is at most 50 ppm and wherein, if component B is present, the ratio of the molar amount of component B1 to the sum of the molar amounts of components A and B is at most 0.07. The invention also relates to: a method for preparing such a polycarbonate; the use of such a polycarbonate in a method for preparing copolymers or thermoplastic compositions containing copolymers; a copolymer containing structural units derived from the polycarbonate; a thermoplastic (moulding) composition; and a moulded body containing the polycarbonate and/or the copolymer.

IPC Classes  ?

• C08G 64/14 - Aromatic polycarbonates not containing aliphatic unsaturation containing a chain-terminating or -crosslinking agent
• C08G 64/42 - 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

Abstract

The present invention relates to a polycarbonate composition comprising the following components, relative to the total weight of the composition: A) 0-76 wt. % of copolycarbonate resin containing bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane units and substituted or unsubstituted bisphenol units, B) 0-58 wt. % of an aromatic linear polycarbonate resin, C) 15-52 wt. % of poly(1,4-cyclohexylenedimethylene 1,4-cyclohexanedicarboxylate), and D) 1-60 wt. % of methyl methacrylate-n-butyl acrylate-butadiene-styrene copolymer, The composition according to the present invention has a high light transmittance, a low haze, and a low birefringence.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08F 212/08 - Styrene
• C08G 63/199 - Acids or hydroxy compounds containing cycloaliphatic rings
• C08G 64/16 - Aliphatic-aromatic or araliphatic polycarbonates
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

The present application describes the use of functionalized siloxane polymer for improving the intralipid resistance of aromatic polycarbonate, as is relevant especially for medical devices comprising elements which are intended to come into contact with intralipid solution during the intended use of the medical devices.

IPC Classes  ?

• A61L 29/06 - Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• A61M 5/14 - Infusion devices, e.g. infusing by gravityBlood infusionAccessories therefor

Abstract

The present invention relates to a polyisocyanate mixture containing at least one polyisocyanurate polyisocyanate and at least one polyallophanate polyisocyanate, wherein the polyisocyanate mixture has an amount of monomer diisocyanate of <0.10 wt. %, determined in accordance with DIN EN ISO 10283:2007-11 by gas chromatography using an internal standard, an isocyanurate group portion of ≥40 mol % to ≤85 mol %, determined by NMR spectroscopic analysis and based on the total amount of isocyanurate groups and allophanate groups of the polyisocyanate mixture, and an allophanate group portion of ≥15 mol % to ≤60 mol %, determined by NMR spectroscopic analysis and based on the total amount of isocyanurate groups and allophanate groups of the polyisocyanurate mixture.

IPC Classes  ?

• C09D 175/06 - Polyurethanes from polyesters
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates

Abstract

A computer-implemented method which comprises the automated and rational (computer aided) modification of chemical recipes, in particular the design of the concrete starting composition of a reaction system, for example an oligomeric or polymeric polyol system, using an optimization procedure aiming at maximizing the similarity to an original target/reference system is provided. Furthermore, a data processing apparatus comprising means for carrying out the method, a computer program product comprising instructions which, when the program is executed by a computer, cause the computer to carry out the method and a computer-readable storage medium comprising instructions which, when executed by a computer, cause the computer to carry out the method is provided.

IPC Classes  ?

• G16C 20/10 - Analysis or design of chemical reactions, syntheses or processes

Abstract

A method of manufacturing a particulate composition includes providing an aqueous dispersion, the dispersion including polymer particles, where the polymer of the particles has a glass transition temperature as determined by differential scanning calorimetry according to ISO 11357, second heating, at a heating and cooling rate of 20 K/min; and storing the dispersion of step I) at a temperature of ≤0° C. until a polymer including precipitate is formed. The method further includes grinding the precipitate at a temperature above the glass transition temperature of the polymer to obtain a particulate composition, where the precipitate subject to grinding has a water content of at least 5 wt.-%.

IPC Classes  ?

• B29B 9/12 - Making granules characterised by structure or composition
• B29B 9/16 - Auxiliary treatment of granules
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

The invention relates to a method for producing isocyanates via a gas-phase phosgenation of the corresponding amines, wherein an amine mixture formed of at least one first amine and at least one second amine, that is different from the first amine, is reacted with phosgene to produce a reaction mixture, wherein the method is characterized in that the first amine is selected from the group comprising or consisting of aliphatic and/or araliphatic amines and the second amine is selected from the group comprising or consisting of cycloaliphatic amines. The invention also relates to a product that is/can be obtained using this method and to the use of a product of this type. The invention also relates to the use of an amine mixture formed of at least one first amine and at least one second amine, that is different from the first amine, in a method for producing the corresponding isocyanates via gas-phase phosgenation in order to lower the content of acid chlorine compounds and/or the content of hydrolyzable chlorine in the corresponding isocyanates obtained in the production process.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene

Abstract

Processes for continuously producing a polymer polyol (“PMPO”). The process includes free-radically polymerizing an ethylenically unsaturated monomer composition in the presence of a base polyol, in which the polymerizing occurs in a continuous stirred tank reactor (“CSTR”) that has an external recirculation loop comprising a pump and a heat exchanger arranged in series with respect to each other. A stream of the reactor contents is (i) continuously removed from the reactor, (ii) then continuously flows through the pump and the heat exchanger, and (iv) then continuously returns to the CSTR. A ratio of reactor system residence time to recirculation loop residence time is 10 to 93.

IPC Classes  ?

• C08F 2/14 - Organic medium
• C08F 2/01 - Processes of polymerisation characterised by special features of the polymerisation apparatus used
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C08F 212/10 - Styrene with nitriles

Abstract

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

IPC Classes  ?

• B01J 27/26 - Cyanides
• B01J 31/06 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
• 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 invention relates to a one-component burn-in system comprising A) a blocked polyisocyanate component containing at least one reaction product of a) at least one polyisocyanate component, which has at least isocyanurate and/or iminooxadiazinedione structures, b) at least one branched aliphatic diole, and c) at least one secondary amine with aliphatic, cycloaliphatic, and/or araliphatic substituents, wherein the component b) is used in a quantity of more than 2 wt. % based on the total quantity of the components a) and b), and the component c) is used in a quantity which corresponds to at least 95 mol. % of the isocyanate groups mathematically still present after the reaction of the components a) and b), B) at least one binder which is reactive to isocyanate groups and comprises at least two isocyanate-reactive groups per molecule on statistical average, C) optionally catalysts, and D) optionally solvents and/or optionally auxiliary agents and additives.

IPC Classes  ?

• C08G 18/80 - Masked polyisocyanates
• 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 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08K 3/22 - OxidesHydroxides of metals

Abstract

The present invention relates to a method for producing compressed, open-pore, fine-cell polyurethane rigid foams, to the polyurethane rigid foams so obtained and to their use.

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
• C08J 9/36 - After-treatment

Abstract

The present disclosure relates to a process for producing polysiloxane-polycarbonate block co-condensates using specially terminated polysiloxanes, to polysiloxane-polycarbonate block co-condensates having at least one Si—O—C bond and fine siloxane domains, to a moulding compound including the polysiloxane-polycarbonate block co-condensate, to a moulded part containing the polysiloxane-polycarbonate block co-condensate, to the use of a special bisphenol as a terminating group of a polysiloxane to increase the reactivity of the polysiloxane and to the use of a specially terminated polysiloxane in the production of a polysiloxane-polycarbonate block co-condensate to increase the proportion of covalent bonds between the siloxane blocks and the polycarbonate blocks.

IPC Classes  ?

• C08G 77/448 - Block- or graft-polymers containing polysiloxane sequences containing polycarbonate sequences
• C08G 77/38 - Polysiloxanes modified by chemical after-treatment

Abstract

The present invention relates to dimensionally stable open-cell, fine-cell rigid polyurethane foams, methods for their production and their use.

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
• C08G 18/16 - Catalysts
• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/48 - Polyethers

Abstract

The present invention relates to a process for recovering raw materials from isocyanurate-containing polyurethane products, in particular known rigid polyurethane-polyisocyanurate foams (PUR-PIR foams or PIR foams for short). The process has the feature that the isocyanurate-containing polyurethane product is reacted with liquid water at a temperature in the range from 130° C. to 260° C. and at a pressure in the range from 1.0 bar to 100 bar in the presence of a catalyst to obtain a chemolysis product and subsequently the chemolysis product is worked up to obtain (I) an amine corresponding to an isocyanate of the isocyanate component and optionally (II) a polyol of the polyol component or a reaction product of a polyol of the polyol component.

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
• 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 11/18 - 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

Abstract

The present invention relates to polycarbonates comprising specific phenolic building blocks which are terminated with at least one aromatic group which can be optionally substituted with at least one C1-C6 alkyl group have a saponifiable chlorine content of 0.2 ppm to 19 ppm and a number average molecular weight of 8 000 g/mol to 20 000 g/mol, a molding compound comprising said polycarbonate, a molded article comprising said polycarbonate and a process for preparing a specific polycarbonate.

IPC Classes  ?

• C08G 64/14 - Aromatic polycarbonates not containing aliphatic unsaturation containing a chain-terminating or -crosslinking agent
• C08G 64/28 - General preparatory processes using halocarbonates and phenols

Abstract

The present invention relates to a polycarbonate cocondensate comprising specific phenolic building blocks and another phenolic building block different from the first one, a molding compound comprising said polycarbonate cocondensate, a molded article comprising said polycarbonate condensate, a process for preparing a polycarbonate cocondensate comprising specific phenolic building blocks and another phenolic building block different from the first one and the use of a specific homopolycarbonate for preparing polycarbonate cocondensates comprising a specific phenolic building blocks.

IPC Classes  ?

• C08G 64/18 - Block or graft polymers
• C08G 64/30 - General preparatory processes using carbonates

Abstract

The invention relates to a method for producing a blocked polyisocyanate, having the steps of reacting A) at least one polyisocyanate component, which has at least isocyanurate and/or iminooxadiazindione structures, with B) at least one branched aliphatic diol and C) at least one secondary amine with aliphatic, cycloaliphatic, and/or araliphatic substituents. The invention is characterized in that the component B) is used in a quantity of more than 2 wt. % based on the total quantity of the components A) and B), the component C) is used in a quantity which corresponds to at least 95 mol. % of the isocyanate groups mathematically still present after the reaction of the components A) and B), and as the polyisocyanate component A), polyisocyanates are used which are produced by modifying simple linear aliphatic, cycloaliphatic, araliphatic, and/or aromatic diisocyanates and which have at least isocyanurate and/or iminooxadiazindione structures, wherein >70 equiv. %, based on the NCO content, is used for the modification process. The invention also relates to said blocked polyisocyanates.

IPC Classes  ?

• C08G 18/80 - Masked polyisocyanates
• C09D 175/04 - Polyurethanes

Abstract

The present invention relates to an amorphous copolycarbonate comprising specific phenolic building blocks and at least one other aliphatic or aromatic building block different from the first one, a molding compound comprising said copolycarbonate, a molded article comprising said copolycarbonate and a process for preparing an amorphous copolycarbonate comprising specific phenolic building blocks and at least one other aliphatic or aromatic building block different from the first one.

IPC Classes  ?

• C08G 64/30 - General preparatory processes using carbonates
• C08G 64/06 - Aromatic polycarbonates not containing aliphatic unsaturation
• C08G 64/16 - Aliphatic-aromatic or araliphatic polycarbonates

Abstract

Provided is a starting material composition suitable for producing rigid isocyanurate foam excellent in both energy absorption performance and sound absorption performance, while exhibiting excellent foam moldability, appearance, and air permeability. The starting material composition for rigid isocyanurate foam according to the present disclosure contains a polyol composition and a polyisocyanate. The polyol composition contains a trifunctional or higher-functional polyether polyol (C) having a hydroxy value of 300 mg KOH/g or more, a polyether polyol (A) different from polyether polyol (C) having an ethylene oxide content, based on the total amount of alkylene oxide of polyether polyol (A), of 50 mass % or more, and a polyether polyol (B) different from polyether polyol (C) having an ethylene oxide content, based on the total amount of alkylene oxide of polyether polyol (B), of 10 mass % or less.

IPC Classes  ?

• C08G 18/48 - Polyethers
• E04B 1/86 - Sound-absorbing elements slab-shaped

Abstract

The invention relates to a thermoplastic moulding composition containing: A) at least one polycarbonate and/or polyester carbonate each containing structural units derived from bisphenol-A; B) a further polymer different from component A or a mixture consisting of polymers each different from component A, wherein Component B consists of B1) at least one thermoplastic polymer and optionally B2) at least one non-thermoplastic polymer; C) at least one inorganic filler selected from the group consisting of quartz compounds, talc, wollastonite, kaolin, CaCO3, titanium dioxide, and titanium dioxide in combination with other inorganic pigments, Al(OH)3. AlO(OH), Mg(OH)2 and mica as well as combinations of said fillers; and D) optionally at least one non-polymeric polymer additive and/or at least one non-polymeric processing aid, in each case different from component C, wherein the weight ratio of component B to component C is at least 0.5 and wherein the weight proportion of component B1 in component B is at least 20%, and wherein the moulding composition has a mass fraction of free bisphenol-A of less than 30 ppm. The invention also relates to: a method for producing a moulding composition; the use of the moulding composition to produce a moulded body; and a moulded body containing the moulding composition or consisting of the moulding composition.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• B29B 7/06 - MixingKneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
• B29B 7/82 - Heating or cooling
• B29K 25/00 - Use of polymers of vinyl-aromatic compounds as moulding material
• B29K 67/00 - Use of polyesters as moulding material
• B29K 69/00 - Use of polycarbonates as moulding material
• B29K 96/02 - Graft polymers
• C08K 3/34 - Silicon-containing compounds

Abstract

The present invention relates to an E/E component comprising electrical conductors L1 and L2, which are connected via a thermoplastic material M. The distances between the electrical conductors L1 and L2 are dependent on the operating voltage of the E/E component. The thermoplastic material comprising polycarbonate, selected rubber-modified graft polymer and phosphorus-containing flame retardant exhibits a high tracking resistance and allows small distances and hence a small design overall.

IPC Classes  ?

• H01B 7/295 - Protection against damage caused by external factors, e.g. sheaths or armouring by extremes of temperature or by flame using material resistant to flame
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

The present invention relates to two-component clear-coat systems comprising polyaspertic esters having primary amino groups and small amounts of dialkyl fumarates, to a process for the production thereof, and to the use thereof in the production of coatings for vehicle repair applications and to substrates coated therewith.

IPC Classes  ?

• C09D 175/12 - Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• 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
• C09D 7/63 - Additives non-macromolecular organic
• C09D 175/02 - Polyureas

Abstract

The invention relates to an isocyanate-reactive composition comprising an internal release agent, a method for production of a polyurethane sandwich element using the isocyanate-reactive composition, use of the isocyanate-reactive composition in the method for production of a polyurethane sandwich element and the polyurethane sandwich element.

IPC Classes  ?

• C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
• B32B 3/12 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by a layer of regularly-arranged cells whether integral or formed individually or by conjunction of separate strips, e.g. honeycomb structure
• B32B 27/12 - Layered products essentially comprising synthetic resin next to a fibrous or filamentary layer
• B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08K 5/09 - Carboxylic acidsMetal salts thereofAnhydrides thereof
• C08K 5/101 - EstersEther-esters of monocarboxylic acids

Abstract

The present disclosure relates to a polycarbonate composition including the following components, relative to the total weight of the composition: A) 10-60 wt. % of a copolycarbonate, B) 25-75 wt. % of a homopolycarbonate, C) 3-13 wt. % of a phosphorous flame retardant, D) 4-9 wt. % of an impact modifier, and E) 2-14 wt. % of a polyester poly(1,4-butylene terephthalate), poly(1,4-cyclohexylenedimethylene 1,4-cyclohexanedicarboxylate), poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyester, and a combination thereof. The present disclosure also relates to a shaped article made from the composition. The polycarbonate composition according to the present disclosure has a good combination of comparative tracking index, high heat resistance, good impact resistance and flame retardancy.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08K 5/526 - Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds

Abstract

The present invention relates to a polycarbonate composition comprising the following components, relative to the total weight of the composition: A) 40-85 wt. % of an aromatic polycarbonate, B) 1-30 wt. % of acrylonitrile-butadiene-styrene, C) 8-15 wt. % of wollastonite, D) 1-3.5 wt. % of bisphenol-A bis(diphenyl phosphate), and E) 2.5-6 wt. % of styrene-acrylonitrile-methacrylate. 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 impact strength, heat resistance, and aesthetic appearance.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08K 3/34 - Silicon-containing compounds
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
• C08K 7/04 - Fibres or whiskers inorganic
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds

Abstract

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

IPC Classes  ?

• 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
• B29C 67/24 - Shaping techniques not covered by groups , or characterised by the choice of material
• B29K 275/00 - Use of polyureas or polyurethanes as reinforcement
• B29K 669/00 - Use of polycarbonates for preformed parts, e.g. for inserts
• 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 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
• B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes
• C08L 75/04 - Polyurethanes

Abstract

Described are thermally conductive flame-proof compositions which have a high comparative tracking index and contain bisphenol A homopolycarbonate, talc, phosphorus-containing flame retardant, fluorine-containing anti-drip agent, and anhydride-modified alpha-olefin polymer. Said compositions have a high comparative tracking index, thus allowing distances between electrical conductors in electronic and electrical components to be kept shorter than in the past.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• H01B 3/42 - Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes polyesters, polyethers, polyacetal

Abstract

Described are thermally conductive flame-proof compositions which have a high comparative tracking index and contain at least 44.5 wt. % aromatic polycarbonate in which bisphenol TMC is used as a monomer unit, 30 to 40 wt. % talc, 6 to 14 wt. % phosphorus-containing flame retardant, 0.3 to 2.0 wt. % fluorine-containing anti-drip agent, and 1 to 3 wt. % anhydride-modified α-olefin polymer. Said compositions have a high comparative tracking index, thus allowing distances between electrical conductors in electronic and electrical components to be kept shorter than in the past.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08G 64/14 - Aromatic polycarbonates not containing aliphatic unsaturation containing a chain-terminating or -crosslinking agent
• C08K 3/22 - OxidesHydroxides of metals
• C08K 3/34 - Silicon-containing compounds
• C08K 5/5399 - Phosphorus bound to nitrogen

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 48/405 - Intermeshing co-rotating screws
• B29K 23/00 - Use of polyalkenes as moulding material
• B29K 25/00 - Use of polymers of vinyl-aromatic compounds as moulding material
• B29K 27/00 - Use of polyvinylhalogenides as moulding material
• B29K 33/00 - Use of polymers of unsaturated acids or derivatives thereof, as moulding material
• B29K 67/00 - Use of polyesters as moulding material
• B29K 69/00 - Use of polycarbonates as moulding material
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4

Abstract

The present disclosure relates to a pair of screw elements suitable for a multishaft screw machine with m screw shafts SW1 to SWm rotating in the same direction and at the same speed, the respective neighboring axes of rotation X1 to Xm of which have a center distance A in a cross-section at right angles to the axes of rotation, and with m interpenetrating circular housing bores which each have an identical housing bore inner diameter D and of which the bore centers M1 to Mm have a distance equal to the center distance A, and of which the bore centers M1 to Mm coincide with the respective associated axes of rotation X1 to Xm of the screw shafts SW1 to SWm and coincide with the centers of rotation P1 to Pm of the screw elements.

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 48/65 - Screws with two or more threads neighbouring threads or channels having different configurations, e.g. one thread being lower than its neighbouring thread

Abstract

The invention is related to an electronic patch (EP) comprising at least: (A) a first polymeric layer (A) with a first surface a) and a second surface b) which is parallel to surface a), whereby layer (A) provides a water vapour permeability of ≥500 g/m2d; (B) an electronic device (B) providing at least one flat surface which is positioned on the first surface a) of the first polymeric layer (A); (C) optionally a second polymeric layer (C) providing a vapour permeability of ≥500 g/m2d, preferably in a range of 500 to 2000 g/m2d; (D) optionally a further layer (D) as water barrier positioned between the electronic device (B) and the first polymeric layer (A); (E) optionally an adhesive on the second surface b) of the first polymeric layer (A); (F) optionally a polymeric foam (F) with a moisture vapour transmission rate (MVTR) of ≥500 g/m2d, more preferably in a range of 550 to 2000 g/m2d, most preferably in a range of 600 to 1500 g/m2d covering the electronic device (B), determined according to DIN 53122-1:2001-08; whereby the electronic patch (EP) is surrounded by the first polymeric layer (A) and optionally the second polymeric layer (C) in a way that the overall water vapour permeability of the electronic patch (EP) is ≥400 g/m2d as well as a process for the production of the electronic patch (EP).

IPC Classes  ?

• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/01 - Measuring temperature of body parts

Abstract

The present invention relates to two-component coating compositions containing polyaspartic ester and polyether polyol-based polyurethane prepolymers, wherein the proportion of polyols, polyether polyols and polyether polyamines and the proportion of components having a functionality >2 in the coating composition (excluding auxiliaries, additives and solvents) are in a defined range, to a process for producing these compositions, to the use thereof for producing coatings and to the use of these coatings as a protective coating, in particular for objects that are subjected to (repeated) mechanical stresses.

IPC Classes  ?

• C09D 175/12 - Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/34 - Carboxylic acidsEsters thereof with monohydroxyl compounds
• C08G 18/50 - Polyethers having hetero atoms other than oxygen
• C08G 18/66 - Compounds of groups , , or
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic

Abstract

The present invention relates to a process for preparing aniline or an aniline conversion product, comprising the steps of (A) providing aminobenzoic acid; (B) decarboxylating the aminobenzoic acid in a reactor at a reaction temperature in the range from 170° C. to 350° C. to give aniline and carbon dioxide, wherein the decarboxylation is conducted at a reaction pressure at which the boiling point of aniline is reached or—preferably—exceeded, such that a first, liquid, phase possibly containing solid particles and a second, gaseous, phase form in the reactor, with a gaseous stream containing aniline and carbon dioxide being discharged from the reactor; and (C) condensing and optionally purifying the aniline present in the gaseous stream; and (D) optionally, converting the aniline obtained in (C) to an aniline conversion product.

IPC Classes  ?

• 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

Abstract

The invention relates to a method for recovering raw materials from polyurethane products, said method having a chemolysis process. The chemolysis process is characterized in that the polyurethane products are reacted with (i) an aminic chemolysis reagent selected from (a) a primary or secondary organic amine, (b) an amino alcohol with a primary or secondary amino group, or (c) a mixture of (a) and (b) and (ii) water in the presence of (iii) a catalyst at a temperature ranging from 100° C. to 195° C. and at a pressure ranging from 900 mbar (abs) to 2000 mbar (abs), wherein the mass ratio of aminic chemolysis reagent and water to the polyurethane product ranges from 0.5 to 2.5, and the mass of the water ranges from 3.0% to 22% of the mass of the aminic chemolysis reagent.

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
• C08G 18/48 - Polyethers
• C08G 18/82 - Post-polymerisation treatment
• C08J 11/06 - Recovery or working-up of waste materials of polymers without chemical reactions
• 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 present disclosure relates to a NCO-terminated prepolymer for coating applications, to a process for preparing the inventive NCO-terminated prepolymer and to the use of the inventive NCO-terminated prepolymer. The present disclosure further relates to a two-component-system, including a component A), including at least the inventive NCO-terminated prepolymer and a component B), including at least one compound which includes at least one Zerewitinoff-active group. Additionally, the present disclosure relates to a process for curing a composition on a substrate and to the cured article.

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 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C09D 175/04 - Polyurethanes
• C09J 175/04 - Polyurethanes

Abstract

The invention relates to an EE device including depending on the operating voltage applied, different distance ranges between the electrical conductors, the distances being so small that already the material used between the electrical conductors results in a very high comparative tracking index. Surprisingly, this material is a polycarbonate-based material the comparative tracking index of which is significantly increased when relatively small amounts of fluorine-containing anti-dripping agent and phosphorus-based retardant are added.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
• C08K 5/5399 - Phosphorus bound to nitrogen
• H02G 5/02 - Open installations

Abstract

Described are thermoplastic compositions on the basis of aromatic polycarbonate having a high comparative tracking index, good flame retardancy and a high heat deflection temperature. The compositions contain a combination of polyalkyl(meth)acrylate, phosphorus-containing flame retardant and fluorine-containing anti-dripping agent.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
• C08K 5/5399 - Phosphorus bound to nitrogen

Abstract

The invention relates to a method for the purification of aniline, comprising the following steps: a) providing a raw aniline fraction; b) extracting the raw aniline fraction with an aqueous extractant containing, in relation to the total mass of the aqueous extractant, an alkali metal hydroxide in a concentration range from 0.009 to 2.05 mass % and an alkali metal salt that is different from an alkali metal hydroxide in a concentration range from 2.40 to 25.0 mass %, wherein an organic aniline phase and an aqueous amino phenolate phase are obtained after a phase separation; c) distilling the organic aniline phase from step b), obtaining a flow of purified aniline, a gaseous flow that boils at a lower temperature than aniline and containing organic impurities, and a liquid flow that boils at a higher temperature than aniline and containing organic impurities and aniline.

IPC Classes  ?

• C07C 209/84 - Purification

Abstract

Described are thermoplastic compositions on the basis of aromatic polycarbonate having a high comparative tracking index, good flame retardancy and a high heat deflection temperature. The compositions contain a combination of (meth)acrylate copolymer, phosphorus-containing flame retardant and fluorine-containing anti-dripping agent.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08K 5/526 - Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
• C08K 5/5399 - Phosphorus bound to nitrogen

Abstract

The invention relates to a four-flight screw element for a multishaft screw machine with screw shafts rotating in the same direction and at the same speed. The two screw elements according to the invention, which are located opposite each other directly adjacent on two directly adjacent screw shafts, practically clean each other in pairs. The invention also relates to the use of the screw element according to the invention in a multishaft screw machine and to a multishaft screw machine which is equipped with a pair of screw elements according to the invention, as well as to a method for the extrusion of plastic or viscoelastic masses using the screw element according to the invention.

IPC Classes  ?

• B01F 27/1143 - Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections screw-shaped, e.g. worms
• B01F 27/723 - Mixers with rotary stirring devices in fixed receptaclesKneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two or more helices in the same receptacle the helices intermeshing to knead the mixture
• B01F 101/00 - Mixing characterised by the nature of the mixed materials or by the application field
• 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 48/535 - Screws with thread pitch varying along the longitudinal axis
• B29C 48/635 - Eccentrically rotating screwsScrews revolving around an axis other than their central axis

Abstract

The present invention relates to a composition containing A) 60 to 93 wt. % of at least one aromatic polycarbonate, polyester carbonate or mixtures thereof, B) 2 to 20 wt. % of a polyester on the basis of an aromatic or cycloaliphatic dicarboxylic acid or mixtures thereof and cyclohexane dimethanol and optionally an additional aliphatic diol, and C) 1 to 20 wt. % of at least one phosphorus-containing flame retardant. The invention also relates to a component that contains the composition and to the use of components B and C in the indicated quantities in order to improve CTI and flame retardancy of polycarbonate compositions.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08K 3/24 - AcidsSalts thereof
• C08K 5/103 - EstersEther-esters of monocarboxylic acids with polyalcohols
• C08K 5/134 - Phenols containing ester groups
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4

Abstract

The present invention relates to an aqueous polyurethane dispersion and a process for preparing the same, an adhesive containing the same, and an adhesion article obtained by bonding with the adhesive. The aqueous polyurethane dispersion comprises a polyurethane having an anionic group dispersed therein, the polyurethane has a fusion enthalpy of 3 J/g-100 J/g at 20° C.-100° C. of the first temperature rising curve measured with the DSC according to DIN 65467, a weight-average molecular weight of 31,000-95,000, and the aqueous polyurethane dispersion has an acid value of 0.5 mg KOH/g-8.5 mg KOH/g. The adhesive comprising the aqueous polyurethane dispersion of the present invention has an excellent initial bonding force.

IPC Classes  ?

• C08G 18/66 - Compounds of groups , , or
• C08G 18/08 - Processes
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/34 - Carboxylic acidsEsters thereof with monohydroxyl compounds
• 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 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08J 3/07 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from polymer solutions
• C09D 11/102 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
• C09D 175/06 - Polyurethanes from polyesters
• C09J 175/06 - Polyurethanes from polyesters

Abstract

The invention relates to a multi-layer body, comprising (I) a carrier layer made of a special thermoplastic polycarbonate molding compound and (II) a metal layer which has one or more recesses. The invention also relates to a lighting or display unit, comprising the multi-layer body and a light source, to a method for producing the multi-layer body, and to the use of the special thermoplastic polycarbonate molding compound as a carrier layer of such a multi-layer body.

IPC Classes  ?

• C25D 5/02 - Electroplating of selected surface areas
• C25D 5/14 - Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
• C25D 5/56 - Electroplating of non-metallic surfaces of plastics
• G09F 9/33 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes

Abstract

The present invention relates to a two-component coating composition, a coating method and use of the composition, and a product coated with the coating composition. The two-component coating composition comprises a component A and a component B, wherein the component A comprises an aqueous hydroxyl-containing polyacrylic dispersion, the component B comprises a polyether-modified polyisocyanate, wherein the composition has a molar ratio of isocyanate groups and hydroxyl groups of 1.2:1 to 2:1; wherein the aqueous hydroxyl-containing polyacrylic dispersion has a hydroxyl content of greater than 2% by weight, relative to the total weight of solids of the aqueous hydroxyl-containing polyacrylic dispersion, and wherein the aqueous hydroxyl-containing polyacrylic dispersion has a weight-average molecular weight of not higher than 450000. The two-component coating composition provided by the present invention has a matte effect and is easy to clean.

IPC Classes  ?

• C09D 175/08 - Polyurethanes from polyethers
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C08G 18/70 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
• C08G 18/77 - Polyisocyanates or polyisothiocyanates having hetero atoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
• C08G 18/78 - Nitrogen
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C09D 7/80 - Processes for incorporating ingredients

Abstract

The invention relates to a multi-layer body, comprising (I) a carrier layer made of a special thermoplastic polycarbonate molding compound and (II) a layer made of a material selected from the group consisting of stone products, hide products, textile fabrics containing synthetic fibers, materials of plant origin or materials containing components of plant origin, or laminates containing one or more of the aforementioned materials, wherein the layer (II) has either a specified minimum transmission or at least one recess in the shape of at least one symbol, a pattern, a hole, a line, or a sign, or the layer has punctiform recesses. The invention also relates to a lighting unit, comprising the multi-layer body and a light source, to a method for producing the multi-layer body, and to the use of the special thermoplastic polycarbonate molding compound as a carrier layer of such a multi-layer body.

IPC Classes  ?

• B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
• 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 67/00 - Use of polyesters as moulding material
• B29K 69/00 - Use of polycarbonates as moulding material

Abstract

Photopolymer compositions include a) matrix polymers, b) writing monomers, c) at least one photoinitiator system, d) optionally at least one non-photopolymerisable component, e) optionally catalysts, radical stabilisers, solvents, additives and other auxiliary and/or additional materials. The at least one photoinitiator system c) consists of at least one colouring agent and at least one coinitiator. At least one of the colouring agents has a structure according to formula (II), and the at least one coinitiator has a calculated oxidation potential (E); determined according to the formula (1).

IPC Classes  ?

• B32B 3/02 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
• G11B 7/24044 - Recording layers for storing optical interference patterns, e.g. hologramsRecording layers for storing data in three dimensions, e.g. volume storage
• G11B 7/245 - Record carriers characterised by the selection of the material of recording layers comprising organic materials only containing a polymeric component

Abstract

The invention relates to a photopolymer composition including a) matrix polymers, b) writing monomers, c) at least one photoinitiator system, d) optionally at least one non-photopolymerisable component, e) optionally catalysts, radical stabilisers, solvents, additives and other auxiliary and/or additional materials. The at least one photoinitiator system c) consists of at least one colouring agent and at least one coinitiator. At least one of the colouring agents has a structure according to formula (I) and the at least one coinitiator has a calculated oxidation potential (formula II), determined according to the below formula (1) via the quantum mechanical calculation of Gibbs energies at 298 K in the basic state and the oxidised state of the coinitiator, in particular the triaryl (alkyl) borate after geometry optimisation, involving conformer energy minimisation using the AMI force field, followed by an ab-initio conformer energy calculation based on the previously determined molecular geometry coordinates, in the solvent, acetonitrile, with a solvent field correction according to the PCM method, is in the range of 1.16 V to 1.37 V relative to the saturated calomel electrode (SCE) in acetonitrile (formula III).

IPC Classes  ?

• C09D 7/41 - Organic pigmentsOrganic dyes
• C09D 4/06 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups
• C09D 175/14 - Polyurethanes having carbon-to-carbon unsaturated bonds
• G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details

Abstract

The present invention relates to a compound for use as catalyst in the production of polyisocyanate polyaddition products, to the production thereof and to the use thereof as catalyst, preferably as thermolatent catalyst, for production of polyisocyanate polyaddition products. The invention further relates to a formulation and to a process for producing polyisocyanate polyaddition products, each using the compound of the invention, and to a polyisocyanate polyaddition product obtained or obtainable by said process. The invention finally relates to a coating composition for coating a substrate, comprising or consisting of the polyisocyanate polyaddition product of the invention.

IPC Classes  ?

• B01J 31/22 - Organic complexes
• C08G 71/04 - Polyurethanes

Abstract

The invention relates to a method for the low-emission production of carbon monoxide (CO) for the production of phosgene, from which, for example, polycarbonates or organic isocyanates, and polyurethanes therefrom, can be produced using a process for the partial oxidation with gasification of polymeric recyclable materials. The invention further relates to a device that can be used for this purpose and to the use of said gasification process and/or polymeric recyclable materials to provide carbon monoxide for the production of phosgene.

IPC Classes  ?

• C01B 32/40 - Carbon monoxide
• C01B 32/80 - Phosgene
• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C08J 11/12 - 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 dry-heat treatment only

Abstract

The invention relates to a process for producing a blocked polyisocyanate, comprising a reaction of A) a polyisocyanate component with B) at least one branched aliphatic diol and with C) at least one secondary amine having aliphatic, cycloaliphatic and/or araliphatic substituents, characterized in that component A) comprises at least one linear aliphatic polyisocyanate A1), which has at least isocyanurate and/or iminooxadiazinedione structures, and at least one cycloaliphatic polyisocyanate A2), wherein A1) and A2) are present in an eq ratio with respect to one another of 2.0:1.0 to 5.9:1.0 and component B) is used in an amount of more than 2% by weight, based on the total amount of components A) and B), and component C) is used in an amount which corresponds to at least 95 mol % of the isocyanate groups arithmetically still present after the reaction of components A) and B), and to the blocked polyisocyanates.

IPC Classes  ?

• C08G 18/80 - Masked polyisocyanates
• C09D 175/12 - Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group

Abstract

The invention relates to a method for producing isocyanates by reacting at least one amine or the salt thereof with a stoichiometric excess of phosgene in the condensed phase in the presence of a solvent, having the steps of: A) transitioning to a hot phosgenation process and B) expelling remaining phosgene and/or hydrogen chloride. The invention is characterized in that the reaction is carried out in batches in at least two reactors which are arranged parallel to one another and in that step A) and/or step B) is carried out asynchronously in at least two of the reactors arranged parallel to one another.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 263/20 - SeparationPurification

Abstract

The disclosure relates to photopolymer compositions including a) matrix polymers, b) writing monomers, c) at least one photoinitiator system, d) optionally at least one non-photopolymerizable component, e) optionally catalysts, radical stabilizers, solvents, additives, and other auxiliary agents and/or admixtures, where the at least one photoinitiator system c) consists of at least one dye and at least one coinitiator, at least one of the dyes has a structure according to formula (II), and the at least one coinitiator has a calculated oxidation potential which is ascertained according to the formula (1).

IPC Classes  ?

• G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
• C09B 23/06 - Methine or polymethine dyes, e.g. cyanine dyes characterised by the methine chain containing an odd number of CH groups three CH groups, e.g. carbocyanines
• C09D 7/41 - Organic pigmentsOrganic dyes
• C09D 175/14 - Polyurethanes having carbon-to-carbon unsaturated bonds

Abstract

The invention relates to a method for preparing isocyanates by reacting corresponding amines with phosgene. The invention further relates to an apparatus for separating exhaust gas flows from a phosgenation reaction.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 263/20 - SeparationPurification

Abstract

The present disclosure is directed to thermoplastic compositions on the basis of aromatic polycarbonate having a high comparative tracking index, good flame retardancy and a high heat deflection temperature. The compositions contain a combination of polyethylene, phosphorus-containing flame retardant and fluorine-containing anti-dripping agent. A molding including a region made from the thermoplastic compositions is also disclosed.

IPC Classes  ?

• C08G 64/06 - Aromatic polycarbonates not containing aliphatic unsaturation
• C08F 114/26 - Tetrafluoroethene
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
• C08K 5/5399 - Phosphorus bound to nitrogen
• C08L 23/06 - Polyethene

Abstract

The present invention relates to a method for producing soft polyurethane foams, which have in particular a low compression hardness and/or a low compression set value (DVR), using aliphatic oligomeric polyisocyanates and monohydroxy-functional compounds, and the use of aliphatic oligomeric polyisocyanates in combination with monohydroxy-functional compounds in order to reduce the compression hardness and/or the compression set value (DVR) of soft polyurethane foams. The invention also relates to a soft polyurethane foam, that is preferably flexible, which is produced or can be produced by the aforementioned method and has a low compression hardness and/or a low compression set value (DVR), as well as to the use thereof, for example, for the production of body-supporting elements such as upholstery, mattresses, furniture, automobile seats, and motorbike seats.

IPC Classes  ?

• C08G 18/66 - Compounds of groups , , or
• 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 18/73 - 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 invention relates to a graft copolymer of the general structure B-(A)nm, consisting of blocks of the two polymers A and B, which have different chemical compositions. One of the polymers is a polycondensation polymer, selected from the group consisting of polycarbonates, polyester carbonates, polyesters, and polyamides, and the other polymer is a polymerisate of at least one vinyl monomer. The invention is characterized in that (i) the average molecular weight of the block of polymer B Mn(B) equals at least 13 kg/mol, determined by a combination of gel permeation chromatography and NMR spectroscopy, (ii) the number of side chains in the graft copolymer ns equals at least 3 and maximally 15, determined by NMR spectroscopy, (iii) the average molecular weight of the block of polymer A Mn(A) equals at least 1.5 kg/mol and maximally 15 kg/mol, determined by a combination of gel permeation chromatography and NMR spectroscopy, and (iv) ns multipled by Mn(A) equals at least 13 kg/mol. The invention also relates to the use of the aforementioned graft copolymers in order to reduce the phase surface tension in mixtures containing the polymers A and B, to compositions containing the graft copolymers and the polymers A and B, and to molded bodies containing said compositions.

IPC Classes  ?

• 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
• C08L 23/12 - Polypropene
• C08L 25/06 - Polystyrene
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

To increase a comfort and a flexibility, an ostomy pouch accessory for usage with at least one ostomy pouch device is proposed, comprising at least one sensor element for a detection of a leakage of the ostomy pouch device in at least one application state, also comprising at least one adhesive element for a detachable fixation of the ostomy pouch accessory in the application state.

IPC Classes  ?

• A61F 5/44 - Devices worn by the patient for reception of urine, faeces, catamenial or other dischargeColostomy devices

Abstract

The invention relates to a multi-layer structure (MA) comprising: (S1) at least one first outer layer (S1) containing a polymer (P1) having a Vicat softening temperature ≥149° C., preferably ≥160° C., further preferably ≥170° C., more preferably ≥180° C., determined according to ISO 306:2004 (50N; 50° h); (S2) at least one further polymer layer (S2) containing a polymer (P2) having a Vicat softening temperature <149° C., preferably ≤140° C., more preferably ≤130° C. determined according to ISO 306:2004 (50N; 50°/h), preferably in a range from 120 to 148° C.; (S3) at least one core layer (S3); (S4) at least one further polymer layer (S4) containing a polymer (P2) having a Vicat softening temperature <149° C., preferably ≤140° C., more preferably ≤130° C., determined according to ISO 306:2004 (50N; 50° h), preferably in a range of 120 to 148° C.; (S5) at least one second outer layer (S5) containing a polymer (P1) having a Vicat softening temperature ≥149° C., preferably ≥160° C., further preferably ≥170° C., more preferably ≥180° C., determined according to ISO 306:2004 (50N; 50°/h). The invention also relates to a method for manufacturing such a multi-layer structure and to a security document containing same.

IPC Classes  ?

• 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 7/02 - Physical, chemical or physicochemical properties
• B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
• B32B 37/18 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
• C08G 64/16 - Aliphatic-aromatic or araliphatic polycarbonates

Abstract

The present invention relates to an elastomeric polyurethane comprising at least a first flame retardant in an amount of ≥5% to ≤9% by weight based on the total weight of the elastomeric polyurethane and at least one mineral filler in an amount of ≥3% to ≤5% by weight based on the total weight of the elastomeric polyurethane, wherein the at least a first flame retardant is at least one phosphorous comprising polyol, wherein the at least one mineral filler is selected from the group consisting of carbonates, sulfates, silicates, mixtures and hydrated modifications thereof and wherein the total amount of the first flame retardant and the mineral filler is in the range of ≥10% to ≤14% by weight, based on the total weight of the elastomeric polyurethane, to a process for the preparation of said elastomeric polyurethane, to the use of these elastomeric polyurethane in offshore applications, mine and quarries applications, pulp and paper applications, shoe soles applications, handling applications, military application, transport application, railway and industrial rolls, industrials tires, electric encapsulation, wheels, rollers, doctor blades, hydro cyclones, sieves, sport tracks, insulating panels, acoustic insulations, wind blades or bumpers, and to offshore applications, mine and quarries applications, pulp and paper applications, shoe soles applications, handling applications, military application, transport application, railway and industrial rolls, industrials tires, electric encapsulation, wheels, rollers, doctor blades, hydro cyclones, sieves, sport tracks, insulating panels, acoustic insulations, wind blades or bumpers comprising such a polyurethane.

IPC Classes  ?

• C08G 18/64 - Macromolecular compounds not provided for by groups
• 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 18/40 - 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 18/66 - Compounds of groups , , or
• C08K 3/22 - OxidesHydroxides of metals
• C08K 3/26 - CarbonatesBicarbonates
• C08K 3/30 - Sulfur-, selenium-, or tellurium-containing compounds

Abstract

The present invention relates to compositions containing linear polycarbonate, branched polycarbonate, a reinforcing fibre and a small amount of salts of sulfonic acid, sulfonamide or sulfonimide derivatives. The invention likewise relates to the use of branched polycarbonate in a polycarbonate composition for achieving a classification according to UL94 of V-0 at a layer thickness of 2.00 mm.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08K 5/42 - Sulfonic acidsDerivatives thereof
• C08K 5/549 - Silicon-containing compounds containing silicon in a ring
• C08K 7/14 - Glass

Abstract

The disclose relates to a method for producing volume reflection holograms with substrate-guided reconstruction beams and/or substrate-guided diffracted beams in a single-beam set-up, including the steps of (i) providing at least one laser beam source producing a recording beam having a first wave vector (ii) providing a holographic recording medium on a transparent substrate, the substrate having a first flat side facing the at least one laser beam source and a second flat side facing away from the at least one laser beam source, where the holographic recording medium is arranged on the first flat side or on the second flat side, (iii) providing a reflector arrangement arranged on the second flat side of the substrate.

IPC Classes  ?

• G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
• G03H 1/04 - Processes or apparatus for producing holograms

Abstract

The disclosure relates to a polyol composition, a corresponding polyurethane reaction system and a polyurethane foam prepared therefrom. The polyol composition includes: B1) an EO- and/or PO-based polyether polyol having a functionality of 2-6 and a weight-average molecular weight of 3000-12000 g/mol; B2) a PO- and/or EO-terminated polyarea polyol having a functionality of 2-4, and a weight-average molecular weight of 3000-8000 g/mol; optionally B3) a polyester polyol having a functionality of 2-4, and a weight-average molecular weight of 1000-1800 g/mol; and B4) at least one β-dicarbonyl compound.

IPC Classes  ?

• C08G 18/40 - High-molecular-weight compounds
• C08G 18/48 - Polyethers
• C08G 18/50 - Polyethers having hetero atoms other than oxygen
• C08L 75/04 - Polyurethanes

Abstract

The invention relates to a method for pyrolysis of polycarbonate-containing material in order to recover raw materials. The method comprises: (a) introducing material intended for the pyrolysis, at least comprising a polycarbonate-containing compound and an entire amount of phosphorous, organic compound, into a reactor, the entire amount relative to the entire weight of the material intended for pyrolysis having a ratio of at least 0.01 wt. % phosphor with a formal oxidation number of +5; (b) decomposing, at a temperature of 300° C. to 700° C., at least the material intended for pyrolysis introduced into the reactor in step (a) and obtaining a product that is present in the gaseous phase as the pyrolysate and of pyrolysis residues that are present in a non-gaseous phase; (c) cooling the removed pyrolysate to a temperature of less than 300° C. while obtaining a pyrolysis product, selected from pyrolysis condensate, pyrolysis sublimate or a mixture thereof.

IPC Classes  ?

• C10B 53/07 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of synthetic polymeric materials, e.g. tyres
• C10B 39/00 - Cooling or quenching coke
• C10B 57/06 - Other carbonising or coking processesFeatures of destructive distillation processes in general using charges of special composition containing additives
• C10B 57/14 - Features of low-temperature carbonising processes

Abstract

The invention is related to a process, preferably a continuous process, for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound with a bisepoxide compound in the presence of a catalyst in a reactor; wherein the diisocyanate compound and the bisepoxide compound are continuously and/or step-wise added preferably continuously added to the reactor and the polyoxazolidinone is continuously and/or step-wise, preferably continuously removed from the reactor.

IPC Classes  ?

• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
• C08G 18/71 - Monoisocyanates or monoisothiocyanates

Abstract

The present invention relates to the use of specific variants of 3-deoxyarabinoheptulosanate 7-phosphate synthase for producing ortho-aminobenzoic acid by means of microbial fermentation and microorganisms suitable for this purpose.

IPC Classes  ?

• C12N 9/10 - Transferases (2.)
• C12P 13/00 - Preparation of nitrogen-containing organic compounds

Abstract

The invention relates to a layer construction comprising at least one coating composition, which is partially or completely hardened, for a pigmented lacquer (Bp) and at least one coating composition, which is applied thereon, for a clear lacquer (BK), wherein the coating composition Bp contains at least one polyaspartic acid-containing component, at least one silane-functional polyisocyanate, and at least one pigment, and the coating composition BK likewise contains at least one polyaspartic acid-containing component and at least one polyisocyanate. The invention also relates to a layer system comprising a substrate, at least one coating composition Bp, which is applied onto at least one section of the substrate and is partly or completely cured, and at least one coating composition BK, which is applied thereon. The invention also relates to a method for producing a cured layer construction on a preferably metal substrate and to a layer system comprising a preferably metal substrate and a layer construction which can be obtained according to the aforementioned production method.

IPC Classes  ?

• C09D 175/12 - Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group

Abstract

The invention relates to a method for cleaving polyurethane products, having the steps of (A) providing a polyurethane product which is based on isocyanate components and a polyol component; (B) reacting the polyurethane product with a monofunctional araliphatic alcohol in the presence of an alcoholysis catalyst, thereby obtaining a product mixture containing a liquid polyol phase and a solid carbamate of an isocyanate of the isocyanate component and the monofunctional araliphatic alcohol; and (C) separating the carbamate from the product mixture, thereby leaving the liquid polyol phase.

IPC Classes  ?

• C12P 13/00 - Preparation of nitrogen-containing organic compounds
• 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
• C12N 9/80 - Hydrolases (3.) acting on carbon to nitrogen bonds other than peptide bonds (3.5) acting on amide bonds in linear amides
• C12P 13/02 - Amides, e.g. chloramphenicol

Abstract

The present invention relates to a process for recovering aminobenzoic acid from an aqueous mother liquor which is produced on crystallization of aminobenzoic acid. The process comprises a step (A) of fermenting a suitable fermentable raw material in the presence of microorganisms to form aminobenzoate anions and/or aminobenzoic acid; a step (B) of crystallising aminobenzoic acid at a pH of 3.0 to 4.7, wherein this crystallisation can be carried out during and/or after the fermentation; a step (C) of extracting the aqueous mother liquor of the crystallisation using an alkanol with 8 to 12 carbon atoms to obtain a first alcoholic phase containing aminobenzoic acid and a first aqueous phase; a step (D) of back-extracting aminobenzoic acid from the first alcoholic phase using an aqueous base solution or acid solution to obtain a second aqueous phase containing anions and cations of the aminobenzoic acid and a second alcoholic phase; and a step (E) of crystallising aminobenzoic acid from the second aqueous phase by feeding the latter back into the crystallisation of step (B) or in a separate crystallisation.

IPC Classes  ?

• C07C 227/42 - Crystallisation
• C07C 227/16 - Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof by reactions not involving the amino or carboxyl groups

Abstract

The invention relates to a process for recovery of rubber-modified vinyl(co)polymer from a polycarbonate resin or an optionally shredded molded part made thereof and the use of the recovered rubber-modified vinyl(co)polymer for the production of molded parts as well as blend partner in polycarbonate blends. Further optional aspects are the recovery of aromatic and/or aliphatic diol and the use of this diol for the production of polycarbonates.

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
• C08F 279/04 - Vinyl aromatic monomers and nitriles as the only monomers
• C08J 11/06 - Recovery or working-up of waste materials of polymers without chemical reactions
• 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
• C08L 51/00 - 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

Abstract

The present invention relates to polyurethane elastomers, obtainable or obtained from the reaction of at least one NCO-terminated prepolymer (A), at least one polyol mixture (B), obtainable or obtained by mixing at least one polyester (B1) having a number average molecular weight (Mn) in the range of 900 g/mol to 3000 g/mol and a hydroxyl functionality of ≥1.7 and ≤4, wherein Mn has been determined by gel permeation chromatography and (B2) at least one carbodiimide (B2), at least one chain extender (C), wherein the polyol mixture (B) was stored for at least 4 weeks at 23° C. after mixing of (B1) and (B2), a process for the manufacturing of those polyurethane elastomers, a kit-of-parts and to the use of those polyurethane elastomers.

IPC Classes  ?

• C08G 18/66 - Compounds of groups , , or
• 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 18/40 - High-molecular-weight compounds
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/64 - Macromolecular compounds not provided for by groups
• C08L 75/12 - Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group

Abstract

The invention relates to a process for preparing polyoxyalkylene polyester polyols with calculated OH numbers of 320 mg (KOH)/g to 530 mg (KOH)/g by reacting a starter compound, which contains alcoholic hydroxy groups and/or amine protons, and a fatty acid ester containing an alkylene oxide. The invention further relates to polyoxyalkylene polyester polyols resulting from the method and to a preparation method for polyurethanes by reaction of the polyoxyalkylene polyester polyols according to the invention with polyisocyanates.

IPC Classes  ?

• C08G 18/48 - Polyethers
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/46 - Polycondensates having carboxylic or carbonic ester groups in the main chain having hetero atoms other than oxygen

Abstract

The present invention relates to a method for recovering at least one raw material from a polyurethane product, comprising steps (A) providing a polyurethane product based on an isocyanate component and a polyol component, the isocyanate component comprising only isocyanates for which the corresponding amines have a boiling point at 1013 mbar(abs.) of at most 410° C.; (B) performing chemolysis of the polyurethane product with an alcohol and water; (C) processing the product of the chemolysis, comprising (C.I) extraction with an organic solvent, the boiling point of which at 1013 mbar(abs.) is in the range of 40° C. to 120° C., at a temperature in the range of 10° C. to 60° C., followed by (C.II) phase separation into a first product phase and into a second product phase; and (D) processing the first product phase to obtain the polyol, comprising (D.I.) separation of organic solvent by distillation and/or stripping, and (D.II) separation of amine dissolved in the first product phase by distillation so as to obtain the 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

Abstract

A method for pyrolysis of polycarbonate-containing material in order to recover raw materials is provided. The method comprises at least the following steps: (a) introducing material intended for the pyrolysis, at least comprising material that contains a mixture of a polycarbonate-containing compound and a polystyrene-containing compound, into a reactor; (b) decomposing, at a temperature of 300° C. to 700° C., at least the material intended for pyrolysis introduced into the reactor in step (a) and obtaining a product that is present in the gaseous phase as the pyrolysate and of pyrolysis residues that are present in a non-gaseous phase; and (c) cooling the removed pyrolysate to a temperature of less than 300° C. while obtaining a pyrolysis product, selected from pyrolysis condensate, pyrolysis sublimate or a mixture thereof.

IPC Classes  ?

• C08J 11/12 - 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 dry-heat treatment only
• B01J 6/00 - CalciningFusing
• C07C 4/22 - Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by depolymerisation to the original monomer, e.g. dicyclopentadiene to cyclopentadiene
• C07C 29/48 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by oxidation reactions with formation of hydroxy groups
• C07C 37/84 - SeparationPurificationStabilisationUse of additives by physical treatment by crystallisation
• C07C 51/43 - SeparationPurificationStabilisationUse of additives by change of the physical state, e.g. crystallisation
• C10B 53/07 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of synthetic polymeric materials, e.g. tyres
• C10B 57/14 - Features of low-temperature carbonising processes

Abstract

The invention relates to a method for cleaving urethanes, in particular polyurethanes, by means of chemolysis (alcoholysis, hydrolysis, or hydroalcoholysis) in the presence of a catalyst. The chemolysis is characterized in that a salt of an oxyacid of an element of the fifth, fourteenth, or fifteenth group of the periodic table of elements or a mixture of two or more such salts is used as the catalyst, the pKb value of the anion of said salt of the oxyacid ranging from 0.10 to 6.00, preferably 0.25 to 5.00, particularly 0.50 to 4.50, wherein the catalyst does not comprise carbonate when the chemolysis is carried out as an alcoholysis (Ia), and the catalyst does not contain carbonate, orthophosphate, or metaphosphate when the chemolysis is carried out as a hydroalcoholysis.

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 29/09 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis
• C07C 29/128 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by alcoholysis
• C07C 29/74 - SeparationPurificationStabilisationUse of additives
• C07C 209/84 - Purification
• C07C 209/86 - Separation
• C07C 269/04 - Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups the nitrogen atom not being part of nitro or nitroso groups from amines with formation of carbamate groups
• C07C 269/08 - SeparationPurificationStabilisationUse of additives

Abstract

The invention relates to a first epoxydation catalyst system comprising a mixture of a metal salt of the metals chromium, manganese, molybdenum, lead and/or bismuth and a hydroxide as well as of a redox-active compound. The invention also relates to an additional second epoxydation catalyst system comprising a mixture of an additional metal salt, iodine and a hydroxide. Furthermore, the invention relates to a process for preparing epoxides comprising the oxidative reaction of an alkene in a reactor in the presence of the first epoxydation catalyst system or the second epoxydation catalyst system.

IPC Classes  ?

• B01J 27/135 - HalogensCompounds thereof with titanium, zirconium, hafnium, germanium, tin or lead
• C07D 301/06 - Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the liquid phase

Abstract

The present invention relates to a polycarbonate composition including the following components, relative to the total weight of the composition: A) 50-95 wt. % of an aromatic polycarbonate; B) 1-20 wt. % of a phosphorus-containing flame retardant; C) 0.3-0.7 wt. % of an anti-dripping agent; D) 0.1-6 wt. % of a hydrolysis stabilizer; and E) 1.5-9 wt. % of a polysilsesquioxane. 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 hydrolysis resistance and flame retardance.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08K 3/34 - Silicon-containing compounds
• C08K 5/092 - Polycarboxylic acids
• C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
• C08K 5/5399 - Phosphorus bound to nitrogen
• C08K 13/02 - Organic and inorganic ingredients

Abstract

An aqueous dispersion contains at least polychlorprene, a component selected from the group consisting of dilute silicic acid sol, a modified silica sol and mixtures thereof, a acrylic acid or a copolymer containing acrylic acid ester and optionally further additives. The aqueous dispersion has a pH of 9.7 to 10.8. The disclosure also relates to a method for preparing the aqueous dispersion, to an adhesive composition at least containing the aqueous dispersion, to the use of the dispersion for preparing adhesive compositions, to the use of the dispersion for adhesively bonding foam substrates according to the spray coagulation method, to an adhesive composite containing at least one substrate and/or sheet material adhesively bonded using the aqueous dispersion, and to a method for producing a composite material. At least two joining parts of the composite material are adhesively bonded using the aqueous dispersion.

IPC Classes  ?

• C08L 11/02 - Latex
• 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
• C08K 3/36 - Silica
• C08K 9/02 - Ingredients treated with inorganic substances
• C08L 25/14 - Copolymers of styrene with unsaturated esters
• C09J 11/04 - Non-macromolecular additives inorganic
• C09J 111/02 - Latex

Abstract

The present invention relates to an aqueous polyurethane-urea dispersion including polyurethane-urea and a preparation method and use thereof, especially in the field of coating compositions, binders or inks, and a product obtained by coating, bonding, sealing or printing with the aqueous polyurethane-urea dispersion. The polyurethane-urea of the aqueous polyurethane-urea dispersion including polyurethane-urea is obtained by the reaction of a system including the following components: a polyisocyanate, a polycarbonate polyol with a hydroxyl functionality of 1.9-2.1, a polyester polyol with a hydroxyl functionality of 1.9-2.1, an amino-containing compound, a hydroxyl-containing carboxylic acid and a neutralizer, where the weight ratio of the polycarbonate polyol to the polyester polyol is 6:1-20:1. The aqueous polyurethane-urea dispersion of the present invention has small particle size, narrow particle size distribution, good color rendering, hydrolysis resistance and color fastness to rubbing, and can be used as a binder for inkjet inks.

IPC Classes  ?

• C09D 175/12 - Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/34 - Carboxylic acidsEsters thereof with monohydroxyl compounds
• 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 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C09D 11/102 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
• C09D 11/30 - Inkjet printing inks
• C09D 175/02 - Polyureas

Abstract

The invention relates to a method according to claim 1 for the commercial implementation of a pyrolysis, and to pyrolysis devices for the pyrolysis of pyrolysis stock used in this method. The pyrolysis stock contains a polymeric compound having at least one structural polyurethane unit of the formula (I), wherein Q is a hydrocarbon group with 2 to 8 carbon atoms, preferably 3 to 8 carbon atoms, and n represents a number from 2 to 4, most preferably 2, and -* represents a covalent bond to the polymer backbone. The method and the pyrolysis device according to the invention allow, even with higher compounds of pyrolysis stock an amount of pyrolysis product to be obtained that contains cleavage products which can be reused for the synthesis of polyurethane-containing material. The invention relates to a method according to claim 1 for the commercial implementation of a pyrolysis, and to pyrolysis devices for the pyrolysis of pyrolysis stock used in this method. The pyrolysis stock contains a polymeric compound having at least one structural polyurethane unit of the formula (I), wherein Q is a hydrocarbon group with 2 to 8 carbon atoms, preferably 3 to 8 carbon atoms, and n represents a number from 2 to 4, most preferably 2, and -* represents a covalent bond to the polymer backbone. The method and the pyrolysis device according to the invention allow, even with higher compounds of pyrolysis stock an amount of pyrolysis product to be obtained that contains cleavage products which can be reused for the synthesis of polyurethane-containing material.

IPC Classes  ?

• C08J 11/12 - 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 dry-heat treatment only
• 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

Abstract

A multi-stage process for continuous production of a polysiloxane-polycarbonate block copolymer by polycondensation is disclosed where in a first stage an oligocarbonate and a hydroxyaryl-terminated polysiloxane are provided and in a second stage at least one special condensation reactor is used. A certain amount of a particular co-catalyst is added and this co-catalyst is added upstream of the first special condensation reactor. The polysiloxane-polycarbonate block copolymer produced by the process according to the invention has a high proportion of small polysiloxane domains and features good mechanical properties, in particular tough fracture behaviour in the notched impact test according to ISO 7391/ISO 180A, good processability, for example in injection moulding or in extrusion, and good flowability.

IPC Classes  ?

• C08G 64/18 - Block or graft polymers
• C08G 64/20 - General preparatory processes
• C08G 77/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
• C08G 77/16 - Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxy groups
• C08G 77/448 - Block- or graft-polymers containing polysiloxane sequences containing polycarbonate sequences

Abstract

The present disclosure provides methods for computing first-order derivative properties of observables of fermionic systems, such as the derivatives of electronic ground and exited states of molecules and materials with respect to the positions of the nuclei, with the help of a quantum computer. The method has the advantageous property that first-order derivative properties with respect to an arbitrary number of parameters of the fermionic system can be computed with a quantum computational effort that is independent of the number of such parameters. First-order derivatives of additional observables, such as wave function overlaps, multipole moments, and electronic density characteristics with respect to additional derivative perturbations, such as nuclear charges and electromagnetic fields, can be evaluated within the same framework, with additional applications such as computation of non-adiabatic dynamics, (hyper)polarizabilities, electrical conductivities, and various spectroscopies of the molecular or material system in question.

IPC Classes  ?

• G06N 10/20 - Models of quantum computing, e.g. quantum circuits or universal quantum computers
• G06F 17/11 - Complex mathematical operations for solving equations
• G06N 10/60 - Quantum algorithms, e.g. based on quantum optimisation, or quantum Fourier or Hadamard transforms

Abstract

The invention relates to a method for the removal of water from and transport of at least one aliphatic diamine comprising the following steps: a) providing a first composition including 60 to 98 wt.-% water and 2 to 40 wt.-% of the at least one aliphatic diamine with two —NH2 groups per molecule, each of them bound to a primary or secondary carbon atom, b) removing water at least partially from said first composition by distillation at a first production location in a distillation apparatus comprising at least two distillation columns operating at different head pressures, thus generating a second composition comprising the diamine and ≤55 wt.-% water, wherein the vapours emerging from the distillation column operating at the higher head pressure are used to evaporate the liquid in the bottoms and/or the feed of a distillation column operating at the lower head pressure at least partially, c) transporting said second composition during a span of time t from the first production location to a second production location, wherein the span of time t including times for optional temporary storage is at least 6 h.

IPC Classes  ?

• C07C 209/84 - Purification
• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C08G 69/28 - Preparatory processes

Abstract

A hydrophilic polyisocyanate composition includes a polyisocyanate component A) and an emulsifier component B. The polyisocyanate component A) consists of at least one polyisocyanate, including silane and thioallophanate structures, of general formula (I), in which R1, R2 and R3 represent identical or different functional groups and each denote a saturated or unsaturated, linear or branched, aliphatic or cyclo-aliphatic or optionally substituted aromatic or araliphatic functional group having up to 18 carbon atoms, which functional group can optionally also contain up to 3 heteroatoms from the series oxygen, sulfur and nitrogen, X represents a linear or branched organic functional group having at least 2 carbon atoms, Y represents a linear or branched, aliphatic or cycloaliphatic, araliphatic or aromatic functional group having up to 18 carbon atoms, and n represents an integer from 1 to 20, and the emulsifier component B) contains at least one ionic and/or nonionic emulsifier.

IPC Classes  ?

• C08G 18/80 - Masked polyisocyanates
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• 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
• C09D 175/04 - Polyurethanes
• C09J 5/00 - Adhesive processes in generalAdhesive processes not provided for elsewhere, e.g. relating to primers
• C09J 175/04 - Polyurethanes

Abstract

The invention relates to a method for the processing and transport of hexane-1,6-diamine or pentane-1,5-diamine comprising the steps of: a) Providing a first composition including 60 to 98 wt.-% water and 2 to 40 wt.-% hexane-1,6-diamine or pentane-1,5-diamine, b) partially removing water from the first composition by distillation at a first production location, whereby a second composition is generated, said second composition including the hexane-1,6-diamine or pentane-1,5-diamine and 1 wt.-% to 35 wt.-% water, and c) transporting said second composition during a span of time t from the first production location to a second production location, wherein the span of time t including times for optional temporary storage is at least 6 h.

IPC Classes  ?

• C07C 211/12 - 1,6-Diaminohexanes
• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene

Abstract

The present invention relates to two-component coating systems containing polyaspartic acid esters with only small amounts of fumaric acid dialkyl esters, to a method for preparing same and their use for producing coatings for use in construction and wind energy. An example for the use of these systems is for coating roofs, for coating floorings and for coating rotor blades of wind turbines, or the leading edges of their rotor blades.

IPC Classes  ?

• C09D 175/02 - Polyureas
• C09D 175/04 - Polyurethanes

Abstract

An aqueous UV-curable dispersion at least includes a reaction product composed of a) at least one polyisocyanate having an average isocyanate functionality of at least 2.2, of which preferably at least one polyisocyanate is an oligomeric polyisocyanate having urethane, biuret, allophanate, iminooxadiazinedione and/or isocyanurate structural units; b) at least one monohydroxy-functional compound containing acryloyl groups, c) at least one component which contains nonionic hydrophilizing groups and has at least one further isocyanate-reactive group and d) at least one diol, triol, diamine and/or triamine, the reaction product having no ionogenic or ionically hydrophilizing groups.

IPC Classes  ?

• C08G 18/67 - Unsaturated compounds having active hydrogen
• C03C 25/326 - PolyureasPolyurethanes
• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/48 - Polyethers
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates

Abstract

The invention relates to a coated film and a method for preparing the same, use of the coated film for manufacturing shaped bodies, a method for manufacturing shaped bodies from the coated film, and a shaped body made therefrom. The coated film comprises a plastic film with Shore hardness of not less than 80A and a coating formed by applying an aqueous coating composition to the plastic film, wherein the plastic film is a film of a thermoplastic polyurethane based on polyester polyol, and the aqueous coating composition comprises: a. 45% by weight to 85% by weight of a dispersion of an anionic polyurethane based on polycarbonate polyol; b. 0% by weight to 40% by weight of a dispersion of an anionic polyurethane based on polyether polyol; c. 2% by weight to 18% by weight of a dispersion of anionic silica; d. 0.5% by weight to 10% by weight of a blocked isocyanate; and e. 0.1% by weight to 10% by weight of an additive; the amounts above being relative to the total weight of the composition.

IPC Classes  ?

• C08J 7/04 - Coating
• 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
• C08K 3/36 - Silica
• C09D 7/40 - Additives
• C09D 7/61 - Additives non-macromolecular inorganic
• C09D 175/04 - Polyurethanes
• C09D 175/08 - Polyurethanes from polyethers

Abstract

A method comprising operating an electrolysis apparatus comprising a plurality of electrolyzers is provided. Each electrolyzer on the anode side has at least one liquid drain and at least one gas outlet, and separately therefrom on the cathode side has at least one liquid drain and at least one gas outlet. The anode spaces of these electrolyzers are connected to one another and separately therefrom the cathode spaces of these electrolyzers are connected to one another, in each case at least via a liquid feed, a gas discharge and a liquid discharge. The liquid drains from the anode spaces and/or the cathode spaces of the electrolyzers are effected, per electrolyzer, via a pipeline siphon into the pipeline system of the liquid discharge. An electrolysis apparatus and a method comprising decoupling an operating pressure on a liquid drain side of an electrolyzer are also provided.

IPC Classes  ?

• C25B 9/23 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
• C25B 1/46 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
• C25B 9/70 - Assemblies comprising two or more cells
• C25B 11/032 - Gas diffusion electrodes
• C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes

Abstract

The present application relates to a heat-resistant thermoplastic electrostatic dissipative composition and shaped articles made therefrom. The composition comprises the following components: an aromatic polycarbonate, a polyalkylene terephthalate, a carbon nanotube and a reinforcement material. The shaped article made from the composition according to the present invention has a good combination of heat-resistance, semi-conductivity and dimensional stability.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 3/04 - Carbon

Abstract

The invention relates to a method for producing alkylene oxides by reacting an alkene with an arene oxide, pyridine-N-oxide, and/or pyrimidine-N-oxide, preferably an arene oxide and/or pyridine-N-oxide, in the presence of a catalyst in a first reactor, wherein the catalyst comprises a metal and/or a metal salt, and the metal is copper, silver, and/or gold. The metal salt comprises chrome, iron, cobalt, and/or copper cation(s), and the reaction is carried out in the absence of oxygen or an oxygen-containing gas mixture.

IPC Classes  ?

• C07D 301/10 - Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase with catalysts containing silver or gold

Abstract

The invention relates to a method for producing monomers and/or oligomers from a polymer that includes a structural unit having a nitrogen-carbonyl carbon bond. The nitrogen-carbonyl carbon bond is broken in a chemical reaction with formaldehyde or paraformaldehyde as the activating reagent. The reaction takes place using a Lewis acid acting as a catalyst. The invention also relates to monomers, in particular a carboxylic acid monomer and an aldimine monomer or an amine monomer, obtained or produced from this method.

IPC Classes  ?

• C08J 11/22 - 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
• 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
• 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 invention relates to a multilayer structure (MS) comprising (SI) at least one first polymer layer (SI) comprising ≥95% by weight, preferably ≥98% by weight, particularly preferably ≥99% by weight, based on the total weight of the polymer layer (SI), of a polymer (PI) selected from the group consisting of a polycarbonate, a co-polycarbonate or mixtures thereof having a Vicat softening temperature≥149° C., preferably ≥160° C., Further preferably ≥170° C.; more preferably ≥180° C., determined according to ISO 360:2004 (50N; 50° /h); (S2) at least one further polymer layer (S2) having a Vicat softening temperature<149° C., preferably ≥140° C., more preferably ≤130° C., determined according to ISO 306:2004 (50N; 50° /h), preferably in a range from 120° C. to 148° C.; (S3) optionally at least one third polymer layer (S3) having a Vicat softening temperature ≥149° C., preferably ≥160° C., further preferably ≥170° C.; more preferably ≥180° C., determined according to ISO 306:2004 (50N; 50° h). The invention further relates to a process for producing a multilayer structure (MS) and to a security document comprising such a multilayer structure according to the invention.

IPC Classes  ?

• 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 7/027 - Thermal properties
• B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
• B32B 37/18 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
• C09J 7/35 - Heat-activated
• C09J 169/00 - Adhesives based on polycarbonatesAdhesives based on derivatives of polycarbonates

Abstract

The present invention relates to polyisocyanate compositions comprising two different types of polyisocyanate, their use in the manufacture of prepregs and polyisocyanurate composited made from said prepregs.

IPC Classes  ?

• C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• 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
• H05K 1/03 - Use of materials for the substrate

Abstract

The invention relates to a modified polyisocyanate and use thereof, especially as a crosslinking component in a water-soluble or water-dispersible coating composition. The modified polyisocyanate comprises iminooxadiazinedione structure and isocyanurate structure, wherein the weight ratio of the iminooxadiazinedione structure to the isocyanurate structure is not less than 1: 5; and relative to the total weight of the modified polyisocyanate, the total amount of molecules with a number average molecular weight greater than 2700 g/mol in the modified polyisocyanate is 4.1% by weight to 22% by weight; and the modified polyisocyanate is obtainable by the reaction of: an aminosulfonic acid, a polyisocyanate; a tertiary amine; and optionally a polyether alcohol containing ethylene oxide groups.

IPC Classes  ?

• C08G 18/78 - Nitrogen
• C08G 18/02 - Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
• C08G 18/08 - Processes

Abstract

The invention relates to coating agents containing polyisocyanates that include amino silane groups and/or mercapto silane groups, further containing a stored mixture of hydroxyl group-containing compounds and alkoxysilyl-functional siloxanes, and catalysts for crosslinking silane groups. Also disclosed are the production of said coating agents and the use thereof for producing coatings on substrates, in particular plastic substrates, e.g. substrates used in the automobile industry.

IPC Classes  ?

• C09D 175/06 - Polyurethanes from polyesters
• B05D 7/00 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
• 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 18/61 - Polysiloxanes
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C08G 18/77 - Polyisocyanates or polyisothiocyanates having hetero atoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
• C08G 77/08 - Preparatory processes characterised by the catalysts used

Abstract

The present invention relates to a process for preparing bisphenol A in the presence of cumene without poisoning the catalyst system comprising an ion exchange resin catalyst and a sulfur containing cocatalyst. Moreover, the present invention provides a process for preparing polycarbonate.

IPC Classes  ?

• C07C 37/20 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using aldehydes or ketones
• C08G 64/04 - Aromatic polycarbonates
• C08G 64/28 - General preparatory processes using halocarbonates and phenols

Abstract

The present disclosure relates to thermoplastic compositions on the basis of aromatic polycarbonate having a high comparative tracking index, a good flame retardancy and high heat deflection temperature. The compositions described herein contain a combination of PMMI, a phosphorus-containing flame retardant and a fluorine-containing anti-dripping agent. The present disclosure also relates to an EE component.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
• C08K 5/5399 - Phosphorus bound to nitrogen
• H01B 7/295 - Protection against damage caused by external factors, e.g. sheaths or armouring by extremes of temperature or by flame using material resistant to flame

Abstract

The present invention relates to an aromatic polycarbonate containing: A) structural units with free COOH functionality which are derived from a hydroxybenzoic acid and are present as end groups, and B) structural units derived from a hydroxybenzoic acid, wherein component B) is chosen from at least one representative from B1) structural units with esterified COOH functionality which are derived from a hydroxybenzoic acid and are present as end groups, and B2) structural units derived from a hydroxybenzoic acid which are incorporated into the polymer chain via an ester or acid anhydride group, wherein the molar ratio of the quantity of component A to the quantity of component B ranges from 1.3 to 50, as well as copolymers and thermoplastic moulding compounds and moulds containing such a polycarbonate or copolymer, a method for preparing the polycarbonate and a method and use of the polycarbonate to prepare the copolymers.

IPC Classes  ?

• 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
• C08G 64/14 - Aromatic polycarbonates not containing aliphatic unsaturation containing a chain-terminating or -crosslinking agent
• C08G 64/24 - General preparatory processes using carbonyl halides and phenols
• C08G 85/00 - General processes for preparing compounds provided for in this subclass

Abstract

A drug injection device consists of a body, a cap, a striker, a spin wheel, a button, a spring, an ampoule, and optionally a needle. Each of the body, the cap, the striker, the spin wheel and the button is a molded plastic part, made out of mostly polycarbonate, which slide, snap, screw or rest in place, without the use of adhesives or fasteners. Also disclosed is a system for recycling a drug injection device having molded plastic parts made from mostly polycarbonates, comprising disassembling the drug injection device, separating the molded plastic parts from all other parts, and reprocessing the molded plastic parts together into recycled resin, which may be through regrinding, melting, and pelletizing.

IPC Classes  ?

• A61M 5/20 - Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
• A61L 31/06 - Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• B29B 17/02 - Separating plastics from other materials
• B29B 17/04 - Disintegrating plastics
• B29K 69/00 - Use of polycarbonates as moulding material
• B29K 105/26 - Scrap