High-performance anti-hydrolysis and high-density resin material for coining polyurethane leather and preparing method thereof

A technology of polyurethane resin and polyurethane leather is applied in the field of high-performance hydrolysis-resistant high-density embossed polyurethane leather resin material and its preparation field, which can solve the problems of poor embossing effect of hydrolysis-resistant high-stripping resin, and improve the embossing effect. The effect of improving the embossing performance, broadening the application field and improving the embossing performance

Inactive Publication Date: 2009-11-18
ZHEJIANG HUAFON SYNTHETIC RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-performance hydrolysis-resistant high-density embossed polyurethane leather resin material and its preparation method, which solves the problem of poor embossing effect of hydrolysis-resistant high-peeling resin at low cost and easy production and application

Method used

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  • High-performance anti-hydrolysis and high-density resin material for coining polyurethane leather and preparing method thereof
  • High-performance anti-hydrolysis and high-density resin material for coining polyurethane leather and preparing method thereof

Examples

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Embodiment 1

[0015] Component A: Mix 20 kg of polyadipate polyol I and polyadipate polyol II (weight-average molecular weight 2000, functionality 2) with 25 kg of DMF and add to the reaction kettle, then add two 2.5 kg of phenylmethane diisocyanate (MDI); react at a temperature of 60-80°C, and add 50 kg of DMF and 10 kg of polyether polyol I (weight-average molecular weight of 2000, functional degree is 2) and 5 kilograms of polyadipate polyol III (weight-average molecular weight is 2000, functional degree is 2); Add 2 kilograms of diphenylmethane diisocyanate (MDI) after mixing evenly, at a temperature of 60 After fully reacting at ~80°C, add 30kg of DMF, 4.5kg of ethylene glycol, and 3.0kg of 1,4-butanediol; after stirring evenly, add 14kg of MDI and react at a temperature of 60-80°C. When the viscosity increases to Add 23kg of DMF at 200Pa·s / 65°C; finally add 0.5kg of dehydrating agent, stir thoroughly, mix evenly, discharge, seal and store for later use.

[0016] Component B: A total ...

Embodiment 2

[0019] Component A: Mix 20 kg of polyadipate polyol I and polyadipate polyol II (weight-average molecular weight 2000, functionality 2) with 25 kg of DMF and add to the reaction kettle, then add two 2.0 kg of phenylmethane diisocyanate (MDI), 0.4 kg of toluene diisocyanate (TDI); react at a temperature of 60-80°C, add 50 kg of DMF, 10 kg of poly Ether polyol I (the weight-average molecular weight is 2000, and the functionality is 2) and 10 kilograms of polyadipate polyol III (the weight-average molecular weight is 4000, and the functionality is 2); add diphenylmethane diisocyanate ( MDI) 2 kg, add 35 kg of DMF, 5.5 kg of ethylene glycol, and 2.0 kg of 1,4-butanediol after fully reacting at a temperature of 60-80°C; add 14.5 kg of MDI after stirring evenly, React at 80°C, add 25kg of DMF when the viscosity increases to 200Pa·s / 65°C; finally add 0.5kg of dehydrating agent, stir well, mix evenly, discharge, seal and store for later use.

[0020] Component B: a total of 15 kg of ...

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Abstract

The invention discloses a high-performance anti-hydrolysis and high-density resin material for coining polyurethane leather and a preparing method thereof. The resin material is made by mixing polyurethane resin A component and polyurethane resin B component, wherein the A component is prepared by the two-step polymerization reaction or the three-steep polymerization reaction of isocyanate, polyester polyol, polyether glycol I and alcohol chain extender; and the B component is prepared by the one-step polymerization reaction of isocyanate, polyester polyol, polyether glycol II and alcohol chain extender, with the addition of a proper amount of cell regulator and catalytic agent. The A component and the B component are added into a reaction vessel according to certain mass ratio, the temperature range is controlled, and then the high-performance anti-hydrolysis and high-density resin material for coining polyurethane leather is obtained after uniform stirring. The resin material has the advantages that the coining performance of the common anti-hydrolysis and high-density resin for polyurethane leather is improved under the condition of low cost; and the important performances such as the coining performance, the thickness conservation rate and the like of the material are improved under the condition that the hydrolytic resistance and the stripping strength are not reduced, and the application fields of the material are greatly expanded. The prepared material can be widely applied to the manufacturing industries, such as the clothing leather, the luggage leather, the instep leather and the like. On the other hand, by adopting the double-component system, later process can be performed under lower temperature, and the double-component system is in favor of energy conservation and consumption reduction.

Description

technical field [0001] The invention relates to a high-performance hydrolysis-resistant high-density embossed polyurethane leather resin material and a preparation method thereof. Background technique [0002] Polyurethane leather resin is a new material used to replace traditional leather. With the depletion of natural resources, natural leather resources will become increasingly scarce, and ordinary polyurethane leather resin can no longer meet people's needs. The hydrolysis-resistant high-peeling embossed polyurethane leather resin is to improve the performance of the polyurethane leather resin, which is an effective aspect of future development. Polyurethane leather resins can be widely used in manufacturing industries such as clothing, luggage, and shoe leather, and are of positive significance to speeding up product upgrading, expanding the application field of PU resin, promoting technological progress and rapid development of the industry, and improving the economic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08G18/66C08G18/10C08G101/00
Inventor 崔宝君袁水华李钟华李国刚
Owner ZHEJIANG HUAFON SYNTHETIC RESIN
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