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One-component, high-solid-content and low-crystallinity polyurethane resin and preparation method thereof

A technology of polyurethane resin and high solid content, applied in the field of polyurethane resin, can solve problems such as low solid content and low crystallinity, and achieve the effect of broadening the scope of application

Active Publication Date: 2013-03-13
SHANGHAI HUIDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is to provide a single-component polyurethane resin with high solid content and low crystallinity in order to solve the shortcomings of the existing one-component polyurethane resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Table 1 shows the ratio of the one-component high-solid-content low-crystallinity polyurethane resin of this embodiment.

[0029] Table 1

[0030] components

parts by weight

Isophorone diisocyanate

14.65

Diphenylmethane-4,4‵-diisocyanate

93.52

Polyethylene adipate-neopentyl glycol ester diol (2000g / mol)

320

castor oil

80

ethylene glycol

10.22

N,N-Dimethylformamide

156

butanone

363

[0031] The preparation method of this resin comprises the following steps:

[0032] (1) Put 320 parts of polyethylene adipate-neopentyl glycol ester diol (the number average molecular weight is 2000g / mol), 80 parts of castor oil and 10.22 parts of ethylene glycol into the reaction kettle, N, N- 22.40 parts of dimethylformamide, after mixing and stirring, put 14.65 parts of isophorone diisocyanate and 0.08 parts of organic bismuth catalyst bicat8220 to start the reaction, the reacti...

Embodiment 2

[0035] Table 2 shows the ratio of the one-component high-solid-content low-crystalline polyurethane resin of this embodiment.

[0036] Table 2

[0037] components

parts by weight

Isophorone diisocyanate

27.20

Diphenylmethane-4,4‵-diisocyanate

71.48

Polyethylene adipate-3-methyl-1,5-pentanediol (2000g / mol)

200

castor oil

200

[0038] ethylene glycol

2.91

3-Methyl-1,5-pentanediol

5.54

N,N-Dimethylformamide

101.4

Ethyl acetate

406

[0039] The preparation method of this resin comprises the following steps:

[0040] (1) Put 200 parts of polyethylene adipate-3-methyl-1,5-pentanediol (number-average molecular weight: 2000g / mol), 200 parts of castor oil and ethylene diol into the reaction kettle 2.91 parts of alcohol, 5.54 parts of 3-methyl-1,5-pentanediol, 48 parts of N,N-dimethylformamide, mix well and add 27.2 parts of isophorone diisocyanate and ...

Embodiment 3

[0043] Table 3 shows the ratio of the one-component high-solid-content low-crystalline polyurethane resin of this embodiment.

[0044] table 3

[0045] components

parts by weight

Isophorone diisocyanate

61.4

Diphenylmethane-4,4‵-diisocyanate

161.4

Polybutylene adipate-neopentyl glycol ester diol (2000g / mol)

100

castor oil

100

ethylene glycol

22.58

3-Methyl-1,5-pentanediol

42.93

N,N-Dimethylformamide

61

butanone

61

[0046] The preparation method of this resin comprises the following steps:

[0047] (1) Put 100 parts of polybutylene adipate-neopentyl glycol ester diol (number average molecular weight 2000g / mol), 100 parts of castor oil, 22.58 parts of ethylene glycol, 3-methyl - 42.93 parts of 1,5-pentanediol, 36 parts of N, N-dimethylformamide, mix well and add 61.4 parts of isophorone diisocyanate, 0.06 parts of organic bismuth catalyst bicat3228, and con...

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Abstract

The invention relates to a one-component, high-solid-content and low-crystallinity polyurethane resin and a preparation method thereof. The polyurethane resin comprises the following components by mass: 1 to 11% of isophorone diisocyanate, 9 to 34% of diphenylmethane-4, 4'-diisocyanate, 11 to 50% of polyadipate type polyester polyol, 1 to 31% of castor oil, 0.5 to 8% of chain extender, and 20 to 50% of solvent, wherein the solvent is the mixture of N, N-dimethylformamide and butanone or the mixture of the N, N-dimethylformamide and acetic ether. The polyurethane resin provided by the invention is high in solid content and low in crystallinity, and can be applied to the synthetic leather industry, such as the bags industry, the clothing industry and the furniture industry.

Description

technical field [0001] The invention relates to a polyurethane resin, in particular to a single-component polyurethane resin with high solid content and low crystallinity and a preparation method thereof. Background technique [0002] Since the development of synthetic leather, the synthetic leather products on the market have gradually moved toward both performance and appearance. Diversified products, especially PU synthetic leather products, have gradually become the darling of high-end leather. At the same time, after years of development, synthetic leather manufacturers have developed into a pursuit of product quality, performance, and price, while paying more attention to the environmental performance of products. Therefore, more and more people in the industry are committed to the development of water-based polyurethane resins, low-solvent (that is, high solid content in the industry) or solvent-free (100% solid content) polyurethane resins. However, so far, the appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/75C08G18/67C08G18/66C08G18/42C08G18/32C08G18/08
Inventor 钱建中钱洪祥郭海英邹佳娜李善善胡亮仇菊平
Owner SHANGHAI HUIDE TECH CO LTD
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