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Polyurethane resin as well as preparation method and application thereof

A technology of polyurethane resin and polyester polyol, which is applied in the field of polyurethane resin, can solve problems such as the inability to realize TPR sole injection molding, and achieve the effects of promoting compatibility, reducing overall polarity, and easy softening

Active Publication Date: 2021-08-27
ZHEJIANG HUAFON SYNTHETIC RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shoe leather produced by this invention has excellent air permeability and moisture permeability, good scratch resistance and wear resistance, smooth surface, and good hand feeling; but the polyurethane resin provided by the above two patents cannot be injection molded with TPR soles

Method used

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  • Polyurethane resin as well as preparation method and application thereof
  • Polyurethane resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A kind of polyurethane resin, its preparation method comprises the steps:

[0058] (1) 2-methyl-1,3-propylene adipate diol with a number average molecular weight of 1000, polybutadiene diol with a number average molecular weight of 1000, and polybutadiene diol with a number average molecular weight of 1000 at 55°C Polybutadiene acrylonitrile diol, 1,4-butanediol and phosphite antioxidant (BASF, Antioxidant 168) in N,N-dimethylformamide and toluene at a mass ratio of 2:1 Mix uniformly in the medium to obtain a mixture; wherein, the total molar weight of polyadipate 2-methyl-1,3-propylene glycol ester diol, polybutadiene diol and polybutadiene acrylonitrile diol and 1,4- The molar ratio of butanediol is 1:2, and the molar ratio of poly(2-methyl-1,3-propylene glycol adipate), polybutadiene diol and polybutadiene acrylonitrile diol is 7:3 :1;

[0059] (2) React the mixture obtained in step (1), 4,4'-dicyclohexylmethane diisocyanate and an organic bismuth catalyst (leading...

Embodiment 2

[0062] A kind of polyurethane resin, its preparation method comprises the steps:

[0063] (1) Polyneopentyl adipate diol with a number average molecular weight of 1000, polybutadiene diol with a number average molecular weight of 1000, and polybutadiene acrylonitrile with a number average molecular weight of 1000 at 50°C Diol, 1,4-butanediol and phosphite antioxidant (BASF, Antioxidant 168) were mixed uniformly in N,N-dimethylformamide and toluene with a mass ratio of 2:1 to obtain a mixture ; Wherein, the total molar weight of polyneopentyl adipate diol, polybutadiene diol and polybutadiene acrylonitrile diol and the mol ratio of 1,4-butanediol are 1:2, poly The mol ratio of neopentyl glycol adipate diol, polybutadiene diol and polybutadiene acrylonitrile diol is 5:3:2;

[0064] (2) react the mixture obtained in step (1), isophorone diisocyanate and organic bismuth catalyst (leading in the United States, BICAT8108) at 100°C for 2 hours to obtain a prepolymer;

[0065] (3) a...

Embodiment 3

[0067] A kind of polyurethane resin, its preparation method comprises the steps:

[0068] (1) 3-methyl-1,5-pentanediol adipate with a number average molecular weight of 1000, polybutadiene diol with a number average molecular weight of 1000, and a number average molecular weight of 1000 polybutadiene acrylonitrile diol, 1,4-butanediol and phosphite antioxidant (BASF, antioxidant 168) in N,N-dimethylformamide with a mass ratio of 2:1 Mix homogeneously with toluene to obtain a mixture; wherein, the total molar weight of polyneopentyl adipate diol, polybutadiene diol and polybutadiene acrylonitrile diol and the amount of 1,4-butanediol The molar ratio is 1:2, the molar ratio of polyadipate 3-methyl-1,5-pentanediol, polybutadiene diol and polybutadiene acrylonitrile diol is 4:1:1 ;

[0069] (2) react the mixture obtained in step (1), isophorone diisocyanate and organic bismuth catalyst (leading in the United States, BICAT8108) at 110 ° C for 1 hour to obtain a prepolymer;

[00...

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Abstract

The invention provides polyurethane resin as well as a preparation method and application thereof. The polyurethane resin is prepared from the following raw materials: a combination of polyester polyol, polybutadiene diol (HTPB), polybutadiene acrylonitrile diol (HTBN), a chain extender and aliphatic diisocyanate. Low-polarity HTPB and HTBN are introduced into the preparation raw materials, polyester polyol and aliphatic isocyanate are matched, the overall polarity of the finally obtained polyurethane resin is greatly reduced, the compatibility of the polyurethane resin and a TPR material is promoted, the polyurethane resin and the TPR material can have high binding strength in the injection molding process without adding a binding agent, and the polyurethane resin has important research significance.

Description

technical field [0001] The invention belongs to the technical field of polyurethane resin, and in particular relates to a polyurethane resin and its preparation method and application. Background technique [0002] Polyurethane resins are generally block compounds obtained by the reaction of polyols and isocyanates. Due to the presence of ester groups, ether groups, urea groups or allophanate structures in the structure, the molecular cohesion energy is relatively high and the polarity is strong. , so polyurethane resin is a relatively high-polarity material, which has the characteristics of light weight and good resilience. TPR (Thermo-Plastic-Rubber) material is a thermoplastic rubber material. It is a kind of thermoplastic soft rubber material that has rubber elasticity without vulcanization and can be directly processed. TPR material is based on thermoplastic styrene-butadiene rubber. Add resin, Fillers, plasticizers and other functional additives are blended with modif...

Claims

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Application Information

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IPC IPC(8): C08G18/12C08G18/66C08G18/42C08G18/32C08G18/69A43B1/14
CPCC08G18/12C08G18/664C08G18/6651C08G18/4238C08G18/698A43B1/14C08G18/3206C08G18/3234
Inventor 方飞张初银韩飞龙杜飘扬吴震马元明彭峰俞杰
Owner ZHEJIANG HUAFON SYNTHETIC RESIN
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