Goods & Services

Aniline; phenylenediamine; hexamethylenediamine; sal ammoniac; ammonium nitrate; nitrotoluidine; diphenylamine; polyamide; synthetic resins, unprocessed; artificial resins, unprocessed; plastics, unprocessed; nitroaniline; diaminodiphenylmethane; diaminodicyclohexylmethane; methylcyclohexanediamine; cyclohexanediamine; pentamethylenediamine; decamethylenediamine; isophorondiamine; benzenedimethanamine; cyclohexyldimethylamine.

Goods & Services

Industrial chemicals; agricultural chemicals, except fungicides, herbicides, insecticides and parasiticides; chemical reagents, other than for medical or veterinary purposes; plastics, unprocessed; synthetic resins, unprocessed; artificial resins, unprocessed; polymer resins, unprocessed; polyurethane; adhesives for industrial purposes; chemicals for use in the manufacture of polyurethanes; esters; acids; isocyanate; dressing, except oils, for skins.

Goods & Services

Isocyanates; polyurethane; synthetic resins, unprocessed; artificial resins, unprocessed; plastics, unprocessed; adhesives for industrial purposes; acids; esters; dressing, except oils, for skins; mastic for leather; industrial chemicals.

Goods & Services

(1) Aniline; phenylenediamine; hexamethylenediamine; sal ammoniac; ammonium nitrate; nitrotoluidine; diphenylamine; polyamide; synthetic resins, unprocessed; artificial resins, unprocessed; plastics, unprocessed; nitroaniline; diaminodiphenylmethane; diaminodicyclohexylmethane; methylcyclohexanediamine; cyclohexanediamine; pentamethylenediamine; decamethylenediamine; isophorondiamine; benzenedimethanamine; cyclohexyldimethylamine.

Goods & Services

Aniline; phenylenediamine; hexamethylenediamine; sal ammoniac; ammonium nitrate; nitrotoluidine; diphenylamine; polyamide; synthetic resins, unprocessed; artificial resins, unprocessed; plastics, unprocessed; nitroaniline; diaminodiphenylmethane; diaminodicyclohexylmethane; methylcyclohexanediamine; cyclohexanediamine; pentamethylenediamine; decamethylenediamine; isophorondiamine; benzenedimethanamine; cyclohexyldimethylamine.

Goods & Services

(1) Industrial chemicals; agricultural chemicals, except fungicides, herbicides, insecticides and parasiticides; chemical reagents, other than for medical or veterinary purposes; plastics, unprocessed; synthetic resins, unprocessed; artificial resins, unprocessed; polymer resins, unprocessed; polyurethane; adhesives for industrial purposes; chemicals for use in the manufacture of polyurethanes; esters; acids; isocyanate; dressing, except oils, for skins.

Goods & Services

Industrial chemicals; agricultural chemicals, except fungicides, herbicides, insecticides and parasiticides; chemical reagents, other than for medical or veterinary purposes; plastics, unprocessed; synthetic resins, unprocessed; artificial resins, unprocessed; polymer resins, unprocessed; polyurethane; adhesives for industrial purposes; chemicals for use in the manufacture of polyurethanes; methyl esters; inorganic acids; isocyanate monomers; polyisocyanates; textile dressing, except oils, for skins, namely, chemical agents for impregnating, binding or coating

Goods & Services

(1) Isocyanates; polyurethane; synthetic resins, unprocessed; artificial resins, unprocessed; plastics, unprocessed; adhesives for industrial purposes; acids; esters; dressing, except oils, for skins; mastic for leather; industrial chemicals.

Goods & Services

Isocyanates; polyurethane; synthetic resins, unprocessed; artificial resins, unprocessed; plastics, unprocessed; adhesives for industrial purposes; acids; esters; dressing, except oils, for skins; mastic for leather; industrial chemicals.

Abstract

3 and a flatness value of less than 2 mm, and the flatness value is determined by a fixed-length ruler. The TPU foam product not only has high flatness such that diversified designs are allowed for a surface of the product, but also has high resilience.

IPC Classes  ?

• C08G 18/08 - Processes
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• 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 9/14 - 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 organic
• C08J 9/18 - Making expandable particles by impregnating polymer particles with the blowing agent
• C08J 9/228 - Forming foamed products
• C08G 101/00 - Manufacture of cellular products

Abstract

A yellowing-resistant thermoplastic polyurethane (TPU) foam material and a preparation method thereof are provided. The yellowing-resistant TPU foam material includes a TPU prepared by subjecting an aliphatic diisocyanate, a chain extender, a polyol, an antioxidant, an ultraviolet (UV) absorber, and a UV light stabilizer to a reaction, where the TPU has a softening point of 90° C. to 160° C., a Shore hardness of 40 A to 98 A, and a melt index of 5 to 250 g/10 min. The prepared yellowing-resistant TPU foam material has excellent yellowing resistance, controllable foaming density, and uniform foam cell size.

IPC Classes  ?

• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08J 9/14 - 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 organic
• 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 18/66 - Compounds of groups , , or
• C08G 18/48 - Polyethers
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines

Abstract

Disclosed in the present invention are a high-flatness thermoplastic polyurethane foam product and a preparation method and a use therefor. The product is melted together by means of foaming aliphatic thermoplastic polyurethane elastomer beads having a melting range of 20-50°C and a melting point of 90-160°C by means of a physical gas to prepare foamed aliphatic thermoplastic polyurethane elastomer beads, and then heating the foamed aliphatic thermoplastic polyurethane elastomer beads by means of a heat source. The density of the high-flatness thermoplastic polyurethane foam product is 0.08-0.8 g/cm3, and the flatness thereof as measured by fixed-length ruler measurement is less than 2 mm. The thermoplastic polyurethane foam product is provided with a relatively high flatness, and the surface of the product is further caused to have a more diverse design, and to have a high resilience.

IPC Classes  ?

• C08J 9/16 - Making expandable particles
• C08J 9/18 - Making expandable particles by impregnating polymer particles with the blowing agent
• C08J 9/228 - Forming foamed products
• 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 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08L 75/04 - Polyurethanes

Abstract

The present invention belongs to the technical field of polyurethane elastomer preparation, and specifically relates to a stain-resistant and dirt-resistant thermoplastic polyurethane elastomer and a preparation method therefor. Functionalized polysiloxanes with different structural types are used in the present invention. On the premise of maintaining a higher content of the polysiloxane component (preferably, the functionalized polysiloxanes act as completely soft segments), the reaction uniformity of the polysiloxane component in the system is ensured, and the problem of poor compatibility between a polysiloxane and polyurethane is solved. The resulting polysiloxane-polyurethane block copolymer has the excellent performances of both a polysiloxane and polyurethane. The comprehensive performance advantages thereof in terms of tensile strength, tear strength, low temperature resistance, hydrophobicity and stain resistance and dirt resistance, etc., are remarkable, and can meet the performance requirements of bracelet watches, VR glasses and other high-end market materials with strict requirements for mechanical properties and stain resistance.

IPC Classes  ?

• C08G 18/65 - Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
• C08G 18/61 - Polysiloxanes
• C08G 18/66 - Compounds of groups , , or
• C08L 75/04 - Polyurethanes
• C08L 75/08 - Polyurethanes from polyethers

Abstract

The present invention relates to a yellowing-resistant thermoplastic polyurethane foaming material and a preparation method therefor, and belongs to the field of polymer foaming materials. The yellowing-resistant thermoplastic polyurethane foaming material comprises a thermoplastic polyurethane elastomer prepared by reacting an aliphatic diisocyanate, a chain extender, a polyol, an antioxidant, a UV absorber and a UV light stabilizer. The thermoplastic polyurethane elastomer has a softening point of 90-160°C, a shore hardness of 40-98 A, and a melt index of 5-250 g/10 min. The prepared yellowing-resistant thermoplastic polyurethane foaming material has excellent yellowing resistance, a controllable foaming density and a uniform cell size.

IPC Classes  ?

• C08L 75/08 - Polyurethanes from polyethers
• C08L 75/06 - Polyurethanes from polyesters
• C08J 9/14 - 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 organic
• 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 18/66 - Compounds of groups , , or
• C08G 18/48 - Polyethers
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines

Abstract

The present invention belongs to the technical field of chemical material synthesis, and especially relates to a foamed thermoplastic polysiloxane-polyurethane block copolymer, a preparation method therefor and a use thereof. The foamed thermoplastic polysiloxane-polyurethane block copolymer comprises a thermoplastic polysiloxane-polyurethane block copolymer having a silica content of 0.5-30 wt% and a Shore hardness of 30A-80D. The thermoplastic polysiloxane-polyurethane block copolymer is used int he present invention to prepare the foamed thermoplastic polysiloxane-polyurethane block copolymer. On the basis that the thermoplastic polysiloxane-polyurethane block copolymer has excellent properties of being skin-friendly, yellowing-resistant, stain-resistant and penetration-resistant and excellent mechanical properties, the obtained foamed thermoplastic polysiloxane-polyurethane block copolymer is also light in weight and has a high resilience on the basis of these excellent properties.

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 9/14 - 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 organic
• C08L 75/04 - Polyurethanes

Abstract

A process for preparing a TPU alloy material through in-situ compatibilization includes: 1) adding a premixed TPU raw material to a feeding port of a twin-screw extruder; injecting a mixture of an alloy component and a dual-active substance into the twin-screw extruder through a lateral feeding port; adding an auxiliary reagent to the TPU raw material or the mixture of the alloy component and the dual-active substance, wherein the alloy component is a polyolefin or a thermoplastic polymer material having reactivity, wherein the dual-active substance is a substance containing a group reactive with the TPU raw material and a group reactive with the alloy component, and the auxiliary reagent includes an initiator; 2) controlling a temperature of a reaction zone of the twin-screw extruder at 50° C. to 250° C., and granulating an extruded material by underwater cutting; and 3) drying the granulated product to obtain the TPU alloy material.

IPC Classes  ?

• C08L 75/06 - Polyurethanes from polyesters
• B01J 2/20 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length

Goods & Services

Acids; alkalies; anhydrides; acetates [chemicals]; ethers; aldehydes; esters; paste fillers for automobile body repair; agricultural chemicals, except fungicides, herbicides, insecticides and parasiticides; chemical reagents, other than for medical or veterinary purposes; plastics, unprocessed; synthetic resins, unprocessed; artificial resins, unprocessed; filtering materials of unprocessed plastics; silicon plastic; organic silicon resin; plasticizers; chemical fertilizer; adhesives for industrial purposes; cement for footwear; mastic for leather; leather glues; glue for industrial purposes; polyurethane; curing agent.

Abstract

The present invention relates to a thermoplastic silicone-polyurethane elastomer and a method for preparing the same. The elastomer is prepared from raw materials comprising: 25-80 parts of a macromolecular polyol, 0-60 parts of a silicone oil or a liquid silicone rubber, 10-50 parts of a diisocyanate, 3-20 parts of a small molecular diol as a chain extender, and 0.1-3 parts of an auxiliary agent. The macromolecular polyol is selected from a silicon-free polyol having a molecular weight of between 1,000 and 4,000 g/mol and a polyol modified by silicone through copolymerization or grafting. The small molecular diol is a small molecular diol comprising 10 or less carbon atoms. The thermoplastic silicone-polyurethane elastomer of the present invention has the following excellent performance parameters: a hardness of Shore A40-D80; a tensile strength ≥5 MPa; smooth hand feeling; resistance to dirt such as dust; resistance to liquid permeation; no irritation to skin; good encapsulation effect on PC, ABS, TPU and the like; and a 180° peel strength >25 N/25 mm.

IPC Classes  ?

• C08G 18/61 - Polysiloxanes
• B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
• C08G 18/24 - Catalysts containing metal compounds of tin
• 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 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material

Abstract

The present invention relates to a method for preparing a foamed thermoplastic polyurethane elastomer product, comprising the steps of: 1) coating a binder: coating the binder on the surfaces of expandable thermoplastic polyurethane elastomer particles; 2) curing and molding: adding the product obtained from step 1) to a mold and then placing it in a vulcanizing machine for curing and molding; and 3) cooling and setting: cooling the mold after the molding in step 2) to obtain the product of the present invention. By means of pre-coating the binder on the surfaces of expanded thermoplastic polyurethane elastomer particles according to the present invention, the weight of the binder can be reduced, and the properties of the expanded thermoplastic polyurethane elastomer particles can be utilized to the maximum extent.

IPC Classes  ?

• C08J 9/236 - Forming foamed products using binding agents
• B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
• B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
• B29C 44/60 - Measuring, controlling or regulating
• C08J 9/224 - Surface treatment
• C08L 75/04 - Polyurethanes
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material
• B29K 105/04 - Condition, form or state of moulded material cellular or porous

Goods & Services

carbonic, mineral, sulfonic, inorganic acids; alkalies; salts used as chemical preparations; anhydrides; acetates; benzyl, ethyl, diisopropyl, choloromethyl ethers; aldehydes; acetic acid, methyl esters; agricultural chemicals, except fungicides, herbicides, insecticides and parasiticides; chemical reagents, other than for medical or veterinary purposes; plasticizers; adhesives for industrial purposes; cement for use in making footwear; mastic adhesives for leather; leather glues; glue for industrial purposes; Polyurethane

Abstract

The present invention provides a high resilience composition foaming material for soles and a preparation method thereof, comprising the following components in parts by weight: 100 parts of ethylene-vinyl acetate copolymer EVA, 1-70 parts of thermoplastic polyurethane/ethylene-vinyl acetate copolymer alloy, 0.1-10 parts of a foaming agent, 0.01-10 parts of a crosslinking agent, and 0-20 parts of a filler.

IPC Classes  ?

• C08L 23/08 - Copolymers of ethene
• C08L 75/06 - Polyurethanes from polyesters
• C08L 75/08 - Polyurethanes from polyethers
• C08K 5/14 - Peroxides
• C08K 3/22 - OxidesHydroxides of metals
• C08K 3/26 - CarbonatesBicarbonates
• C08J 9/10 - 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 chemical blowing agent developing nitrogen
• C08J 9/08 - 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 chemical blowing agent developing carbon dioxide
• A43B 13/04 - Plastics, rubber or vulcanised fibre
• A43B 13/18 - Resilient soles

Abstract

The present invention relates to a low-density foaming thermoplastic polyurethane elastomer and a preparation method therefor. The preparation method comprises primary physical foaming and N-grade (N≥1) foaming under the heating effect of a heating medium. The density of particles of the foaming thermoplastic polyurethane elastomer prepared by the method of the present invention is lower than 120 g/L, and an article thereof has much better physical properties, including rebound resilience, tensile strength, compression modulus, etc.

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 9/14 - 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 organic
• C08L 75/04 - Polyurethanes

Abstract

A composition for a foaming material with high rebound resilience and a preparation method therefor. The composition comprises the following components in parts by weight: 5-95 parts of olefin polymer, 5-95 parts of thermoplastic polyurethane (TPU) elastomer, 0.1-45 parts of compatibilizer, 0.1-10 parts of foaming agent, 0.01-5 parts of crosslinking agent, 0-5 parts of crosslinking additive, and 0-10 parts of other additive. Using of the compatibilizer having a polar group or a double active group yields a compatibilization effect, such that an interfacial tension between the olefin polymer and TPU is reduced, an olefin polymer/TPU interpenetrating polymer network (IPN) structure is formed, and thus the problem of compatibility between two types of materials is solved; by means of successful introduction of the TPU component into the olefin polymer, properties of a foaming olefin polymer material, such as rebound resilience and compression permanent deformation, are greatly improved by virtue of the excellent resilience of TPU.

IPC Classes  ?

• C08L 23/08 - Copolymers of ethene
• C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
• C08L 75/06 - Polyurethanes from polyesters
• C08L 75/08 - Polyurethanes from polyethers
• C08L 75/04 - Polyurethanes
• C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• 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
• C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
• C08K 5/14 - Peroxides
• C08J 9/08 - 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 chemical blowing agent developing carbon dioxide
• C08J 9/10 - 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 chemical blowing agent developing nitrogen
• C08J 9/04 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent

Abstract

A thermoplastic organosilicone-polyurethane elastomer and a preparation method therefor. The elastomer comprises the following components: 25-80 parts of macromolecular polyol, 0-60 parts of organosilicone oil or liquid silicone rubber, 10-50 parts of diisocyanate, 3-20 parts of chain extender micromolecular diol, and 0.1-3 parts of assistant; the macromolecular polyol is a non-silicone polyol having a molecular weight of 1000-4000 g/mol and a polyol modified by organosilicone through copolymerization or grafting; and the micromolecular diol is a micromolecular diol having carbon atoms of 10 or below. The thermoplastic organosilicone-polyurethane elastomer has the following excellent performance parameters: hardness of Shore A40-D80, tensile strength of 5MPa or above, smooth hand feeling, resistant to dust and the like, liquid permeation resistance, no irritation to skin, good encapsulating effect on PC, ABS, TPU and the like, and 180° peel strength of more than 25N/25mm.

IPC Classes  ?

• C08G 18/65 - Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
• C08G 18/66 - Compounds of groups , , or
• C08G 18/32 - 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 18/48 - Polyethers
• C08G 18/61 - Polysiloxanes
• B29C 47/92 - Measuring, controlling or regulating
• B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion

Abstract

The present invention relates to a process for manufacturing a TPU alloy material by in-situ compatibilization. A dual-activity substance is introduced during manufacturing, so that chemical bonding between a TPU material and other materials, such as polyolefin, TPE, or polyamide, is enabled, and the compatibility among the materials is improved; the prepared alloy material has excellent mechanical property, wear resistance, chemical resistance, high/low temperature resistance, processability, and other performances of the TPU material; in addition, the bonding ability of the alloy material to other materials is also improved, and the application range of TPU is enlarged.

IPC Classes  ?

• C08L 75/08 - Polyurethanes from polyethers
• C08L 51/08 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins

Abstract

The present invention relates to a method for preparing an intumescent thermoplastic polyurethane elastomer product, and comprises the following steps: 1) coating a binder: attaching the binder to surfaces of intumescent thermoplastic polyurethane elastomer particles; 2) curing and molding: adding a product which is obtained in step 1) into a molding die and then placing within a vulcanizing machine for mold pressing, curing and molding; 3) cooling and setting: cooling the molding die which is molded in step 2) to obtain the product of the present invention. In the present invention, by means of pre-attaching the binder to the surfaces of the intumescent thermoplastic polyurethane elastomer particles, the ratio of the binder added may be reduced, and properties of the intumescent thermoplastic polyurethane elastomer particles may be used to the maximum extent.

IPC Classes  ?

• C08J 9/236 - Forming foamed products using binding agents
• C08J 9/228 - Forming foamed products
• C08J 9/22 - After-treatment of expandable particlesForming foamed products
• C08L 75/00 - Compositions of polyureas or polyurethanesCompositions of derivatives of such polymers

Abstract

The present invention relates to an extruded expanded thermoplastic polyurethane elastomer bead and a preparation method therefor. The bead consists of components of the following parts by weight: 100 parts by weight of a thermoplastic polyurethane elastomer, 0.01-0.5 parts of a foaming nucleating agent, and 0.01-0.2 parts by weight of an antioxidant. The preparation method comprises: mixing materials, then putting the mixture into an extruder for granulation to produce a particle raw material suitable for foaming, finally, putting the particle into a foam extruder, and die foaming then underwater pelletizing, thus obtaining a product bead. The present invention utilizes an extrusion method to prepare expanded thermoplastic polyurethane beads. Control of the working conditions of the foaming process could lead to acquiring an expanded=bead of a controllable density, the cell density evenly distribute. The overall production process is easy to operate. Without any special limit or requirement placed on the equipment, this method is suitable for industrial continuous production.

IPC Classes  ?

• B29C 44/44 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in the form of expandable particles or beads
• B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
• B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
• B29C 47/92 - Measuring, controlling or regulating
• B29B 7/72 - Measuring, controlling or regulating
• B29B 9/12 - Making granules characterised by structure or composition
• B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
• C08J 9/16 - Making expandable particles
• C08L 75/04 - Polyurethanes
• C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
• C08J 9/14 - 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 organic
• C08G 18/08 - Processes
• C08G 18/32 - Polyhydroxy compoundsPolyaminesHydroxy amines
• C08G 18/34 - Carboxylic acidsEsters thereof with monohydroxyl compounds
• C08G 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08K 3/26 - CarbonatesBicarbonates
• C08K 3/34 - Silicon-containing compounds
• C08K 3/36 - Silica
• C08K 3/38 - Boron-containing compounds
• C08K 5/134 - Phenols containing ester groups
• B29B 7/46 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
• B29B 7/74 - MixingKneading using other mixers or combinations of dissimilar mixers
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material
• C08G 101/00 - Manufacture of cellular products

Abstract

The present invention relates to expanded thermoplastic polyurethane beads, a preparation method for same, and an application thereof. The expanded thermoplastic polyurethane beads consists of components of the following parts by weight: 100 parts of a thermoplastic polyurethane, 1-10 parts of a cell size stabilizer, and 1-35 parts of a melt viscosity modifier. The preparation method for the expanded thermoplastic polyurethane beads is also disclosed. The bead is produced by employing a volatile blowing agent to immerse the thermoplastic polyurethane, comprising the pore size stabilizer and the melt viscosity modifier, in an aqueous suspension, and is then followed by the foaming process. Utilization of the expanded thermoplastic polyurethane beads of the present invention allows for preparation of a foam product. The expanded thermoplastic polyurethane beads prepared per the present invention has uniform cell sizes and a high product yield. At the same time, the expanded thermoplastic polyurethane bead provides a great sintering performance even at a relatively low vapor pressure, a molded foam product has a small deformation, a low dimensional shrinkage ratio relative to a mold, great dimensional stability, and an aesthetically appealing appearance.

IPC Classes  ?

• B29B 13/02 - Conditioning or physical treatment of the material to be shaped by heating
• B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
• C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
• C08J 9/14 - 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 organic
• C08J 9/18 - Making expandable particles by impregnating polymer particles with the blowing agent
• C08J 9/232 - Forming foamed products by sintering expandable particles
• C08L 75/04 - Polyurethanes
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material
• B29K 105/04 - Condition, form or state of moulded material cellular or porous

Abstract

The present invention relates to a foamed thermoplastic polyurethane particle, a preparation method for same, and an application thereof. The foamed thermoplastic polyurethane particle consists of components of the following parts by weight: 100 parts of a thermoplastic polyurethane particle, 1-10 parts of a pore size stabilizer, and 1-35 parts of a melt viscosity modifier. Also disclosed is the preparation method for the foamed thermoplastic polyurethane particle. The particle is produced by employing a volatile blowing agent to immerse in an aqueous suspension thermoplastic polyurethane beads comprising the pore size stabilizer and the melt viscosity modifier and then by foaming. Utilization of the foamed thermoplastic polyurethane particle of the present invention allows for preparation of a foamed product. The foamed thermoplastic polyurethane particle prepared per the present invention has uniform pore sizes and a high product yield. At the same time, the foamed thermoplastic polyurethane particle provides a great fusing performance even at a relatively low vapor pressure, a molded foamed product so produced is of reduced distension, low dimensional shrinkage relative to a mold, great dimensional stability, and an aesthetically appealing appearance.

IPC Classes  ?

• C08L 75/04 - Polyurethanes
• C08J 9/18 - Making expandable particles by impregnating polymer particles with the blowing agent

Abstract

The present invention relates to an extruded foamed thermoplastic polyurethane elastomer particle and a preparation method therefor. The particle consists of components of the following parts by weight: 100 parts by weight of a thermoplastic polyurethane elastomer, 0.01-0.5 parts of a foaming nucleating agent, and 0.01-0.2 parts by weight of an antioxidant. The preparation method comprises: mixing materials, then putting the mixture into an extrusion for granulation to produce a bead raw material suitable for foaming, finally, putting the beads into a foaming-dedicated extruder, and die foaming then underwater pelletizing, thus producing a product particle. The present invention utilizes an extrusion method to prepare a thermoplastic polyurethane foaming particle, controls the conditions of a foaming process, and acquires a foaming particle of a controllable density, where the particle pores are evenly distributed in terms of density, the overall production method is easy to operate, and no special limit or requirement is placed on equipment, thus being suitable for industrialized continuous production.

IPC Classes  ?

• C08L 75/04 - Polyurethanes
• C08J 9/16 - Making expandable particles
• B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion