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Smooth soft hydrolysis-resistant surface layer resin and preparation method thereof

A surface resin, hydrolysis-resistant technology, applied in the direction of textiles and papermaking, to achieve good softness and smoothness, good slipperiness, and improved slipperiness

Inactive Publication Date: 2021-04-02
TAIZHOU HEXIN HIGH MOLECULAR NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problem that the surface layer resin for synthetic leather cannot have both good softness and good smoothness, the application provides a smooth soft hydrolysis-resistant surface layer resin and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This application discloses a slippery soft hydrolysis-resistant surface layer resin, which includes the following raw materials: polyether diol mixture, polyester diol mixture, chain extender, diphenylmethane diisocyanate, solvent components, Hydroxy silicone oil, leveling agent.

[0034] Among them, the polyether diol mixture is polypropylene glycol, and the average molecular weight of the polyether diol mixture is 1000; the polyester diol mixture is prepared by the condensation reaction of adipic acid and ethylene glycol, and the polyester diol mixture The average molecular weight is 1000; the chain extender is neopentyl glycol; the solvent component is N,N-dimethylformamide; the average molecular weight of hydroxy silicone oil is 1000.

[0035] A method for preparing a slippery soft hydrolysis-resistant surface layer resin comprises the following steps:

[0036] S1. Prepolymerization reaction: Mix 25% solvent component, polyether diol mixture, polyester diol mixture...

Embodiment 2

[0040]This application discloses a slippery soft hydrolysis-resistant surface layer resin, which includes the following raw materials: polyether diol mixture, polyester diol mixture, chain extender, diphenylmethane diisocyanate, solvent components, Hydroxy silicone oil, leveling agent.

[0041] Wherein, polyether glycol mixture comprises polypropylene glycol, polytetramethylene ether glycol and polyethylene glycol, and the average molecular weight of polyether glycol mixture is 3000; Polyester glycol mixture is made of succinic acid, p- It is produced by the condensation reaction of phthalic acid and 1,3-propanediol, and the average molecular weight of the polyester diol mixture is 4000; the chain extender is diethylene glycol; the solvent components are N,N-dimethylformamide and A mixture of methyl acetate with a mass ratio of 2:1; the average molecular weight of hydroxy silicone oil is 5000.

[0042] A method for preparing a slippery soft hydrolysis-resistant surface layer ...

Embodiment 3

[0047] This application discloses a slippery soft hydrolysis-resistant surface layer resin, which includes the following raw materials: polyether diol mixture, polyester diol mixture, chain extender, diphenylmethane diisocyanate, solvent components, Hydroxy silicone oil, leveling agent.

[0048] Wherein, the polyether diol mixture includes polytetramethylene ether glycol and polyethylene glycol, and the average molecular weight of the polyether diol mixture is 2000; the polyester diol mixture is composed of terephthalic acid, 1,3 - Produced by the condensation reaction of propylene glycol and neopentyl glycol, and the average molecular weight of the polyester diol mixture is 2500; the chain extender is a mixture of 1,4-butanediol and neopentyl glycol with a mass ratio of 8:2; solvent The component is a mixture of N,N-dimethylformamide and methyl ethyl ketone with a mass ratio of 2:1; the average molecular weight of hydroxy silicone oil is 3000.

[0049] A method for preparing...

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PUM

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Abstract

The invention relates to the field of polyurethane resin preparation, and particularly discloses smooth soft hydrolysis-resistant surface layer resin and a preparation method thereof. The smooth softhydrolysis-resistant surface layer resin is prepared from the following raw materials in percentage by weight: 4.2-12.6 percent of a polyether glycol mixture, 8.4-16.8 percent of a polyester glycol mixture, 0.7-2.4 percent of a chain extender, 6.3-9.9 percent of diphenylmethane diisocyanate, 68.0-72.0 percent of a solvent component, 0.18-0.93 percent of hydroxyl silicone oil and 0.18-0.93 percentof a leveling agent. The preparation method comprises the following steps of S1, a prepolymerization reaction; and S2, a chain extension reaction. According to the invention, the proportion of the polyether glycol mixture, the polyester glycol mixture and the chain extender is adjusted, hydroxyl silicone oil is introduced to the main chain of the synthesized resin, and the surface tension of the resin is reduced through leveling agent, so that the effect of improving the smoothness and softness of the synthetic resin is achieved; and the synthetic leather prepared by processing the resin feessoft and smooth, the surface treatment procedure of the synthetic leather in the actual production process is omitted, the production procedures of the synthetic leather are effectively reduced, and the cost is saved.

Description

technical field [0001] The application relates to the field of polyurethane resin preparation, more specifically, it relates to a slippery soft hydrolysis-resistant surface layer resin and a preparation method thereof. Background technique [0002] Synthetic leather is very similar to natural leather in appearance, with natural and soft luster and strong genuine leather feeling. It is the most ideal substitute for natural leather. Since the limited amount of natural leather can no longer meet people's consumption needs, and the production process of natural leather will cause serious pollution to the environment, the rapid development of the synthetic leather industry has been accelerated, and the development of polyurethane resin for synthetic leather has been promoted. With the improvement of people's consumption level, consumers have put forward higher and higher requirements for the feel and hydrolysis resistance of synthetic leather. [0003] With the deepening of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/48C08G18/61C08G18/32C08G18/12D06N3/14
CPCC08G18/6607C08G18/4018C08G18/42C08G18/48C08G18/4804C08G18/61C08G18/12D06N3/14D06N2211/28
Inventor 徐欣欣齐佳圭孙世文韩方平陈颖
Owner TAIZHOU HEXIN HIGH MOLECULAR NEW MATERIAL
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