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Surface layer polyurethane resin for waterproof and moisture permeable synthetic leather and preparation method of polyurethane resin

A waterproof and moisture-permeable, synthetic leather technology, applied in polyurea/polyurethane coatings, coatings, textiles and papermaking, etc., can solve problems such as technical deficiencies, and achieve excellent wear resistance, excellent waterproof and moisture-permeable performance effects

Active Publication Date: 2017-12-22
江苏华峰超纤材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a surface layer polyurethane resin for waterproof and moisture-permeable synthetic leather and its preparation method, so as to solve the technical deficiencies in the existing waterproof and moisture-permeable polyurethane resin

Method used

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  • Surface layer polyurethane resin for waterproof and moisture permeable synthetic leather and preparation method of polyurethane resin
  • Surface layer polyurethane resin for waterproof and moisture permeable synthetic leather and preparation method of polyurethane resin
  • Surface layer polyurethane resin for waterproof and moisture permeable synthetic leather and preparation method of polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The raw materials used in this embodiment and their weight are shown in Table 1.

[0039] Table 1

[0040]

[0041] The preparation method is as follows:

[0042] (1) Mix 0.039g Chinox 1010, 100g polytetrahydrofuran ether glycol, 100g polyethylene oxide glycol, 0.1072g trimethylolpropane, 7.44g ethylene glycol, and 79.81g dimethylformamide at 60°C ;

[0043] (2) Then add 133.65g of isophorone diisocyanate, heat up to 105°C, prepolymerize for 3 hours, then cool down to 40°C, add 319.24g of dimethylformamide and 253.94g of toluene, and stir for 30 minutes;

[0044] (3) Add 47.68g of isophoronediamine, react at 40°C for 5 hours, add 72.55g of isopropanol and 1.72g of γ-aminopropyltriethoxysilane, stir for 30 minutes and add 0.039g of Chisorb 320 to obtain The surface layer polyurethane resin is used for the waterproof and moisture-permeable synthetic leather.

Embodiment 2

[0046] The raw materials used in this embodiment and their weight are shown in Table 2.

[0047] Table 2

[0048]

[0049] The preparation method is as follows:

[0050] (1) Mix 0.55g Chinox 1035, 300g polytetrahydrofuran propylene oxide copolyether diol, 900g polytetrahydrofuran ethylene oxide copolyether diol, 6g trihydroxypolyether, 28.8g butanediol, 998.88g dimethylethylene glycol Amides are mixed evenly at 50°C;

[0051] (2) Then add 336.72g of hexamethylene diisocyanate, heat up to 95°C, prepolymerize for 2 hours, then cool down to 30°C, add 2330.72g of dimethylacetamide and 1664.8g of butanone, and stir for 25 minutes;

[0052] (3) Add 269.26g of 4,4'-diaminodicyclohexylmethane, react at 30°C for 4 hours, add 554.93g of isobutanol and 6.6g of γ-aminopropyltrimethoxysilane, stir for 30 minutes and then add 1.85g of Chisorb 292, the surface layer polyurethane resin for the waterproof and moisture-permeable synthetic leather can be obtained.

Embodiment 3

[0054] The raw materials used in this embodiment and their weight are shown in Table 3.

[0055] table 3

[0056]

[0057] The preparation method is as follows:

[0058] (1) 0.2g Chinox 1010, 200g polytetrahydrofuran ether diol, 360g polytetrahydrofuran oxirane copolyether diol, 0.86g trihydroxy polyether, 20.25g butanediol, 408.34g dimethylformamide in 60 ℃ mixed evenly;

[0059] (2) Then add 267.36g of isophorone diisocyanate, heat up to 95°C, prepolymerize for 3 hours, then cool down to 30°C, add 1225.02g of dimethylformamide and 466.68g of ethyl acetate, and stir for 25 minutes ;

[0060] (3) Add 141.99g of 4,4'-diaminodicyclohexylmethane, react at 40°C for 4 hours, add 233.34g of isopropanol and 4.38g of γ-aminopropyltriethoxysilane, stir for 30 minutes and then add 4.97g Chisorb 292, the polyurethane resin for the surface layer of the waterproof and moisture-permeable synthetic leather can be obtained.

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Abstract

The invention discloses a surface layer polyurethane resin for waterproof and moisture permeable synthetic leather and a preparation method of the polyurethane resin. The surface layer polyurethane resin for the waterproof and moisture permeable synthetic leather is made from raw materials comprising polyol, chain extenders, a tri-functionality compound, diisocyanate and a sealing agent. The polyol contains polyol A and polyol B in a molar ratio of 1:1-1:3, wherein polyol A is selected from one or more of polytetramethylene ether glycol and polytetrahydrofuran propylene epoxide polyether diols, and the polyol B is selected from one or more of polytetrahydrofuran epoxyethane polyether diols, propylene epoxide epoxyethane polyether diols and polyepoxide glycol; the chain extenders comprise a dihydroxyl chain extender and a diamino chain extender; the tri-functionality compound is a trihydroxy compound; and the blocking agent is a monoamine silane coupling agent. The waterproof and moisture permeable polyurethane synthetic leather disclosed by the invention not only has excellent waterproof property and moisture permeability, but also has excellent wear resistance.

Description

technical field [0001] The invention relates to a polyurethane resin and a preparation method thereof. Background technique [0002] With the continuous improvement of people's wearing comfort and functionality, differentiated polyurethane synthetic leather has gradually attracted widespread attention from various synthetic leather companies, such as waterproof and moisture-permeable polyurethane synthetic leather. Waterproof and moisture-permeable polyurethane synthetic leather is widely used in the production of high-end shoes and high-end clothing due to its unique waterproof and vapor permeability. According to the waterproof and moisture-permeable mechanism, waterproof and moisture-permeable polyurethane synthetic leather can be divided into microporous moisture-permeable type, non-porous hydrophilic moisture-conducting type, microporous moisture-permeable and hydrophilic moisture-conducting combination type, etc. [0003] Because the non-porous hydrophilic and moistur...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/28C09D175/08C09D7/12D06N3/14
CPCC08G18/289C08G18/3206C08G18/3234C08G18/4804C08G18/4812C08G18/4833C08G18/4854C08G18/6685C08K5/1345C09D175/08D06N3/14D06N2209/128D06N2209/1685D06N2211/28
Inventor 杨银龙张其斌孙向浩段伟东张浩
Owner 江苏华峰超纤材料有限公司
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