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Water-based surface polyurethane resin for automobile leather and preparation method of water-based surface polyurethane resin

A polyurethane resin and automotive leather technology, applied in the field of polyurethane automotive leather, can solve the problems of vulcanization resistance, friction resistance, weather resistance, and pollution resistance, etc., and achieve easy industrial production, long service life, and good vulcanization resistance. performance effect

Active Publication Date: 2021-02-09
JIAXING HEXIN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the existing problems in the prior art that the vulcanization resistance, friction resistance, weather resistance, and pollution resistance cannot be combined, the first purpose of this application is to provide a water-based surface layer polyurethane resin for automobile leather, which has better Advantages of vulcanization resistance, friction resistance, weather resistance, pollution resistance and relatively long service life

Method used

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  • Water-based surface polyurethane resin for automobile leather and preparation method of water-based surface polyurethane resin
  • Water-based surface polyurethane resin for automobile leather and preparation method of water-based surface polyurethane resin
  • Water-based surface polyurethane resin for automobile leather and preparation method of water-based surface polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A water-based polyurethane resin for the surface layer of automobile leather, which is polymerized by raw materials comprising the following parts by weight: 43 parts of caprolactone polycarbonate diol with a molecular weight of 2000, 5 parts of HDI, 20 parts of H12MDI, and 0.08 parts of organic Bismuth, 3 parts of 1,5-pentanediol, 3.5 parts of DMPA, 20 parts of acetone, 2 parts of dimethylethanolamine, 60 parts of deionized water.

[0040] A method for preparing a water-based surface layer polyurethane resin for automobile leather, specifically: at a stirring speed of 150 rpm, sequentially add 43 parts of caprolactone-type polycarbonate diol with a molecular weight of 2000, 5 parts of HDI, and 20 parts of H12MDI , 0.08 parts of organic bismuth, react at 88.9°C for 2.0 hours; then add 3 parts of 1,5-pentanediol, 3.5 parts of DMPA, and 8 parts of acetone at 80°C, react for 2 hours, the reactor must be equipped with acetone condensation Reflux device and pressure relief d...

Embodiment 2

[0042] A water-based polyurethane resin for the surface layer of automobile leather, which is polymerized by the following raw materials in parts by weight: 45 parts of caprolactone polycarbonate diol with a molecular weight of 2000, 3 parts of HDI, 18 parts of IPDI, and 0.08 parts of organic bismuth , 3 parts of 1,5-pentanediol, 1 part of 1,6-hexanediol, 3.7 parts of DMPA, 20 parts of acetone, 2 parts of dimethylethanolamine, and 60 parts of deionized water.

[0043] A method for preparing a water-based surface layer polyurethane resin for automobile leather, specifically: at a stirring speed of 150 rpm, sequentially add 45 parts of caprolactone-type polycarbonate diol with a molecular weight of 2000, 3 parts of HDI, and 18 parts of IPDI , 0.08 parts of organic bismuth, reacted for 2.0 hours at 89.1°C; then added 3 parts of 1,5-pentanediol, 1 part of 1,6-hexanediol, 3.7 parts of DMPA, 8 parts of acetone at 80°C, React for 2 hours, the reactor must be equipped with an acetone ...

Embodiment 3

[0045] A water-based surface layer polyurethane resin for automotive leather, which is polymerized by the following raw materials in parts by weight: 40 parts of caprolactone polycarbonate diol with a molecular weight of 2000, 27 parts of H12MDI isocyanate, 0.08 parts of organic bismuth, 2 parts 1,5-pentanediol, 2 parts of 1,6-hexanediol, 4.3 parts of DMPA, 20 parts of acetone, 2 parts of dimethylethanolamine, 65 parts of deionized water.

[0046] A method for preparing a water-based surface layer polyurethane resin for automobile leather, specifically: at a stirring speed of 150 rpm, sequentially add 40 parts of caprolactone-type polycarbonate diol with a molecular weight of 2000, 27 parts of H12MDI isocyanate, 0.08 parts of Organic bismuth, at 89.0°C, reacted for 2.0 hours; then added 2 parts of 1,5-pentanediol, 2 parts of 1,6-hexanediol, 4.3 parts of DMPA, 8 parts of acetone at 80°C, reacted for 2 hours , the reactor must be equipped with an acetone condensing reflux device...

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Abstract

The invention relates to the technical field of polyurethane automobile leather, in particular to water-based surface polyurethane resin for automobile leather and a preparation method of the water-based surface polyurethane resin. The water-based surface polyurethane resin for automobile leather is formed by polymerizing the following raw materials in parts by weight: polyhydric alcohol, isocyanate, a chain extender, acetone, deionized water and a catalyst. The product provided by the invention can be used for automobile leather, and has the advantages of relatively good vulcanization resistance, friction resistance, weather resistance, pollution resistance and relatively long service life. The preparation method comprises the following steps of weighing polyhydric alcohol, isocyanate anda catalyst according to a formula, mixing weighed polyhydric alcohol, isocyanate and a catalyst, and reacting at 85-95 DEG C, adding a chain extender, and reacting for 1-2 hours at the temperature of70-80 DEG C, adding acetone to dilute, cooling to below 45 DEG C, and adding a salt-forming agent to neutralize and form salt, adding water for dispersion, and distilling to remove acetone to obtaina target product. The preparation method is relatively simple to operate and can be used for batch production.

Description

technical field [0001] The present application relates to the technical field of polyurethane automobile leather, in particular to a water-based surface layer polyurethane resin for automobile leather and a preparation method thereof. Background technique [0002] In the past 20 years, the production of synthetic leather in my country has developed extremely rapidly, and has considerable industrial scale and competitive strength. Especially in recent years, the annual growth rate of my country's PU leather market has reached 17% to 29%, and it has gradually become one of the main driving forces for the development of global PU leather, and even the main driving force for promoting the development of the entire polyurethane market. According to incomplete statistics, the national output of synthetic leather was 2.8 billion square meters in 2007 and 3.32 billion square meters in 2008. In 2010, there were more than 2,600 manufacturers of artificial leather and synthetic leather...

Claims

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Application Information

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IPC IPC(8): C08G18/75C08G18/73C08G18/66C08G18/44C08G18/22C08G18/10C08G18/34C08G18/32D06N3/14
CPCC08G18/722C08G18/758C08G18/73C08G18/755C08G18/10C08G18/6659C08G18/664C08G18/44C08G18/227D06N3/146D06N3/148D06N2211/263D06N2209/1685D06N2209/1692D06N2209/146D06N2209/14C08G18/348C08G18/3206
Inventor 石磊纪尚超赵磊王伟晏雪生陈晓春沈建峰
Owner JIAXING HEXIN CHEM IND
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