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polyurethane prepolymer for shoe sole

2.5 (Parts by 370 On the other hand, it can be seen that peeling of skin layers and foam shrinkage are generated in the polyurethane foams obtained in Comparative Examples 1 and 2, thereby making it undesirable for practical purposes, since the components and amounts of the polyol components are different from those of Examples 1 to 7. The polyurethane shoe sole according to claim 9, which is an insert sole. China Huafon Polyurethane, Find details about China PU System for Shoe Sole, Polyurethane Prepolymer from Huafon Polyurethane - Shanghai Huide Science & Technology Co., Ltd. The polyisocyanate compound includes aromatic polyisocyanates, alicyclic polyisocyanates and aliphatic polyisocyanates, each having two or more isocyanate groups in its molecule; mixtures thereof; modified polyisocyanates prepared by modifying the polyisocyanate compound, and the like. 11.4 Microcellular polyurethane elastomer shoe sole components having exceptional physical properties may be prepared from isocyanate-terminated prepolymers derived from polyoxypropylene diols having a molecular weight of from about 2000 Da to 8000 Da, an unsaturation less than about 0.02 meq/g, and a random oxyethylene content of from about 5 to about 15 weight percent. 60 The hardness of the polyurethane foam was measured by an Asker C hardness meter. City/Province. 5 The present invention is directed to a polyurethane foam for shoe soles having an average density of 0.15 to 0.5 g/cm3, prepared by reacting polyol components comprising: (A) a polyether-polyol A having two or more hydroxyl groups; (B) a polymer-polyol B comprising a polyether-polyol having two or more hydroxyl groups as a base material and fine polymer particles; and. 1.3 The company`s main products are polyester polyols, polyurethane resins for artificial leather, Polyurethane System For Shoe Sole, polyurethane adhesives, polyurethane hot melt adhesives, water-based polyurethane resins, solvent-free polyurethane resins and polyurethane elastomers, covering a wide range of global civilian, industrial, and automotive applications Manufacturing, medical … Prepolymer Polyurethane Resin for injection shoes casting shoe sole, US $ 1.83 - 2.4 / Kilogram, POLYURETHANE FOAM, Zhejiang, China, Synthetic Resin And Plastics.Source from Zhejiang Hexin Science And Technology Co., Ltd. on Alibaba.com. 12.5 * Any questions Pls contact: Eli Chan. 2.4 3 ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). 2.4 As the polyether-polyol A, there can be used a polyether-polyol having two or more hydroxyl groups. Polyether-Polyol 14.2 Polymer-Polyol The polyether-polyol A includes polyoxypropylene polyols prepared by adding ethylene oxide to the terminal hydroxyl group of a polyoxypropylene polyol, having a molecular weight of at least 1,500 per one hydroxyl group; and polyoxytetramethylene glycol prepared by ring-opening polymerization of tetrahydrofuran, having a molecular weight of at least 1,000, or mixtures thereof. It is desired that the particle diameter of the fine polymer particles is at most 30 μm, preferably at most 10 μm, from the viewpoint of avoiding poor dispersibility due to sedimentation, and that the particle diameter is at least 0.1 μm, preferably at least 0.5 μm, from the viewpoint of avoiding difficulty in handling due to increase in viscosity. 11.6 (Asker The strength at break was measured by a method according to JIS K-6301, where a resin was replaced with the polyurethane foam. 1688.com ∘ Accordingly, there is a necessity to increase the amount of the chain extender to give a polyurethane foam having a desired hardness, thereby resulting in a decrease in the elongation at break. China Polyurethane For Shoe Sole manufacturers - Select 2021 high quality Polyurethane For Shoe Sole products in best price from certified Chinese Pvc Sheet For Packaging manufacturers, Paint For Cars suppliers, wholesalers and factory on Made-in-China.com — POLYURETHANE PREPOLYMER (FOR SHOE SOLE) (INDUSTRIAL RAW MATERIAL FOR BULK CONSUMPTION) CONTACT US: Nina Mob:+86-18767692555 Email:ynn20203@gmail.com :yenina@hengtaiyuan.com Whatsapp:+86-18767692555 - User Information Legal Enquiry Guide, © 1999-2020 Alibaba.com. 28 21” manufactured by Kao Corporation; N-ethylmorpholine typically exemplified by trade name: “KAOLIZER No. ∘ Among them, the aromatic polyisocyanates, excluding polymers such as polymethylenepolyphenylene diisocyanate, and modified products thereof are desirable. China polyurethane prepolymer for footwear - find detail polyurethane footwear, pu footwear from xuchuan chemical (suzhou) co., ltd. Also, from the viewpoint of viscosity during handling, it is desired that the upper limit of the molecular weight is at most 20,000, preferably at most 10,000. It is particularly desirable to use polyoxypropylene triols, the starting material of which is only a tri-functional hydroxyl group-containing compound such as glycerol or trimethylolpropane, or a monomer mixture of which main component (at least 50% by weight) is the tri-functional hydroxyl group-containing compound. 39095000. 12.1 — 6.5 Product Description. 10.5 340 38 ~0. The physical properties of the resulting polyurethane foam were evaluated by the following methods. As a polyisocyanate compound, a methylenediphenyl diisocyanate-modified prepolymer was used. 2.3 | Suppliers ∘ POLYURETHANE PREPOLYMER for platform and lady's sole, Hot Products Polyurethane Prepolymer For Shoe Sole Made In China, Polyurethane prepolymer Component B and A for Casual Shoes Insole Production, polyurethane prepolymer for injection shoe. It is desired that the molecular weight of the polyoxytetramethylene glycol is at least 1,000, preferably at least 1,400, from the aspect of effectiveness of the oxytetramethylene chain as a soft segment, and that the upper limit of the molecular weight is at most 3,000, preferably 2,300, so that the polyoxytetramethylene glycol can be liquid at the operable temperature. 50 The polyurethane foam for shoe soles according to claim, 5. — 60 The mixing ratio of the polyol components and the polyisocyanate compound is determined from the free foam state in the foam reaction, and the isocyanate index was 90 to 100 or so. 1. The above and other objects of the present invention will be apparent from the following description. III The polyurethane foam for shoe soles according to claim. More concretely, there can be included a process comprising the step of reacting the polyol components with the polyisocyanate compound using a blowing machine such as an automatically mixing and injecting foaming machine or an automatically blending and injecting foaming machine to form a polyurethane foam, the temperature of the polyol components being previously usually adjusted to 40° C. or so using a tank. Average 1.9 1 is a schematic view explaining a method for preparing a test piece of a polyurethane foam which is used for measuring split tear. The polymer-polyol B in which the fine polymer particles are dispersed in the polyether-polyol can be prepared, for instance, by a process comprising mixing fine polymer particles prepared by polymerizing a polymerizable unsaturated group-containing monomer with the polyether polyol and dispersing the fine polymer particles in the polyether-polyol (hereinafter referred to as “process A”); a process comprising polymerizing a polymerizable unsaturated group-containing monomer in a polyether-polyol to disperse the fine polymer particles made of the polymerizable unsaturated group-containing monomer in the polyether-polyol (hereinafter referred to as “process B”), and the like. 30 The desirable range of the molecular weight is from 1,500 to 20,000, preferably 1,800 to 10,000. x 320 A polyurethane foam for shoe soles having an average density of 0.15 to 0.5 g/cm. I In cases where two or more polyether-polyols having two or more hydroxyl groups are used in combination, it is desired that the average hydroxyl groups per one molecule of the polyether-polyol is from 2.5 to 4.0. Blowing ∘ This application is the national phase under 35 U.S.C. 1.3 The elongation at break was measured by a method according to JIS K-6301, where a resin was replaced with the polyurethane foam. 0.5 The systems fall in two categories. The polyol components were prepared in a blowing machine by adding and stirring 0.5 parts by weight of TEDA as a catalyst, and given amounts of the chain extender and water, per 100 parts by weight of the total amount of the polyether-polyol A and the polymer-polyol B. 1.3 50 Ethylene Those monomers can be used alone or in admixture thereof. A polyurethane shoe sole obtained according to claim 1 or 2. The polyurethane is produced by reacting an isocyanate prepolymer, such as methylene diphenyl isocyanate, and a polyol component in the presence of heat and an organometallic catalyst. Also, from the viewpoint of easy handling, it is desired that the molecular weight is at most 20,000, preferably at most 10,000. ∘ 1 The resulting polyurethane foam was observed with naked eyes. 30 Terms of Use 1.0 1 The present invention relates to a polyurethane foam for shoe soles, which can be desirably used, for instance, for shoe soles for sport shoes, particularly for low-density soles. The amount (parts by weight) of the fine polymer particles is based on 100 parts by weight of the total amount of the polyether-polyol A and the polymer-polyol B. 2.3 "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License. (A) a polyether-polyol A having two or more hydroxyl groups (hereinafter simply referred to as “polyether-polyol A”); (B) a polymer-polyol B comprising a polyether-polyol having two or more hydroxyl groups as a base material and fine polymer particles (hereinafter simply referred to as “polymer-polyol B”); and. 7.0 Content of 1.3 5.0 — Low density polyurethane foams and their use in soils of shoes. 350 In order to improve the mechanical properties of the polyether polyurethane, there has been proposed to substitute a part or whole of the polyoxypropylene polyol used as a polyol component for polyoxytetramethylene glycol. White All rights reserved. — The proportion of the polyether-polyol A to the polymer-polyol B varies depending upon the content of the fine polymer particles in the polymer-polyol B, constituents of the fine polymer particles, and the like. Polyurethane prepolymer For Shoe sole Medium to low hardness, Polyurethane prepolymer for shoe sole hd-4160 jf-1014 for self skinning for simulation toy, Professional Polyurethane Prepolymer For Wholesales, PU Casting PU castable Polyurethane Prepolymers, Korea TDI80 for flexible foam, polyurethane foams, prepolymers, elastomers TDI 80/20 toluene diisocyanate, Polyether Polyol and Toluene Diisocyanate (T-80) Synthesis of Polyether Polyurethane Prepolymer For Sealing Ring PU Roller, Sales Polyurethane prepolymers Quality assurance Prepolymer composite, Casting PU elastomer prepolymer for mining conveyor belt, castable pu prepolymer for shock absorption pad for shoes, Low Price Coating Polyurethane Prepolymer. ∘ 20 The polymer-polyol B includes a polyether-polyol having two or more hydroxyl groups and fine polymer particles prepared by polymerizing a polymerizable unsaturated group-containing monomer, and the fine polymer particles are dispersed in the polyether-polyol. 370 — Tear Particles 0.5 Peel of 22 ~0.25 45~55 3 -4 Molded shoe sole physical properties Items Molded Density (g/cm 3 ) Hardness (Shore A ) Tensile strength (MPa) Elongation (%) Tear Strength (kN/m) Ross Flexing (room temperature) Physical properties 0. - 50 Alibaba.com offers 1,334 pu polyurethane for shoes sole products. ), 2) Polyether-Polyol II: Polyoxypropylene triol having a molecular weight of 6,000, prepared by sequentially adding propylene oxide and ethylene oxide to glycerol (content of oxyethylene group: 20% by weight; ratio of terminal primary hydroxyl group to total terminal hydroxyl groups: 88%), 3) Polyether-Polyol III: Polyoxypropylene glycol having a polyoxyethylene terminal and a molecular weight of 4,000, prepared by sequentially adding propylene oxide and ethylene oxide to dipropylene glycol (content of oxyethylene group: 20% by weight; ratio of terminal primary hydroxyl group to total terminal hydroxyl groups: 91%). — Density The chain extender includes polyhydric alcohols such as ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, glycerol, trimethylolpropane, triethanolamine and alkylene oxide adducts of bisphenol A; polyamines such as diethyltoluenediamine, chlorodiaminobenzene, ethylenediamine and 1,6-hexanediamine; and the like. — 0.5 — Polyol Isocyanate PU Chemical for Making Shoe Sole. The compounds shown in Table 1 were used as the polyether-polyol A and the polymer-polyol B for the polyol components, and mixed together in a ratio shown in Table 1. 0.5 Privacy Policy The particle diameter of the fine polymer particles is not limited to specified ones.

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