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Polyurethane resin for artificial leather

A polyurethane resin and artificial leather technology, applied in the field of polyurethane resin, can solve the problems of poor high temperature resistance and inability to use laser engraving, and achieve the effect of high glass transition temperature and good high temperature resistance

Active Publication Date: 2014-12-10
华大化学(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the hydrolysis resistance and peel strength of the polyurethane resin for artificial leather are further improved, and the production cost is low, the high temperature resistance of the polyurethane resin for artificial leather is poor, and the softening point of the dry surface layer prepared by using the polyurethane resin is lower than 200 ° C. Cannot be used for laser engraving

Method used

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Embodiment Construction

[0024] Below are specific embodiments of the present invention, and technical scheme of the present invention is further described:

[0025] The raw material formula of polyurethane resin for artificial leather is made up of following components in the present embodiment:

[0026] Polyester polyol mixture: number-average molecular weight is 60g of polyethylene adipate diols of 3000g / mol, number-average molecular weight is 60g of polybutylene adipate diols of 3000 g / mol;

[0027] Polycarbonate polyol: polycarbonate 1,6-hexanediol 200g;

[0028] Small molecule polyols: ethylene glycol 5g, 1,4-butanediol 5g;

[0029] 120g of 4,4-diphenylmethane diisocyanate;

[0030] Organic solvent: 500g of N,N-dimethylformamide;

[0031] Catalyst: bismuth carboxylate 2g;

[0032] Terminator: Methanol 0.6g;

[0033] Antioxidant: Tetramethylene (3,5-di-tert-butyl-4-hydroxybenzoic acid) methyl ester 15g;

[0034] Slip agent: 15g of silicone-based slip agent;

[0035] Wetting and dispersing ...

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Abstract

The invention relates to a polyurethane resin for artificial leather. The polyurethane resin comprises the following components by mass percent in a raw material formula: 2% to 12% of polyester polyol mixture, 8% to 20% of polycarbonate polyol, 0.5% to 1% of small-molecular polyol, 8% to 12% of 4,4-diphenylmethane diisocyanate, 50% to 80% of an organic solvent, 0.04% to 0.06% of a terminating agent, 0.01% to 0.2% of a catalyst, 0.8% to 1.5% of an antioxidant, 0.8% to 1.5% of a slip agent and 0.8% to 1.5% of a wetting dispersant. The polyurethane resin is better in high-temperature resistance. The temperature of the softening point of a dried facing layer formed by utilizing the polyurethane resin can be improved to the range from 230 to 250 DEG C.

Description

technical field [0001] The invention relates to a polyurethane resin, in particular to a polyurethane resin for artificial leather. Background technique [0002] Polyurethane artificial leather, because the processing process is not limited by time and raw materials, the product has good uniformity, consistent width, and is easy to cut and process. It has become a good material to replace natural leather for many years. Polyurethane artificial leather has the advantages of high strength, wear resistance, cold resistance, breathability, aging resistance, soft texture and beautiful appearance. It is widely used in many fields such as clothing, luggage, shoe leather, furniture, and automobiles. However, the research and development engineers of artificial leather are not satisfied with the development status of synthetic leather, they hope to develop artificial leather that is more beautiful, closer to or exceeds the characteristics of real leather. For example: the post-proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/44C08G18/42C08L75/06C08K5/134
Inventor 史振涛邱天飞冯建东牟文彬刘少勇
Owner 华大化学(安徽)有限公司
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