Modified polyurethane resin and preparation method thereof

A polyurethane resin and modification technology, applied in the field of modified polyurethane resin and its preparation, can solve the problems of poor wear resistance and scratch resistance, affecting the wear resistance and scratch resistance of resin, achieve good wear and scratch resistance effect, and improve hydrolysis resistance. Sex, avoid the effect of needle explosion phenomenon

Active Publication Date: 2016-04-13
福建汇得新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this kind of primer resin is used with ordinary polyurethane surface layer resin, there are great requirements for the moisture permeability, wear resistance and scratch resistance of the surface layer resin. Ether polyol,

Method used

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  • Modified polyurethane resin and preparation method thereof
  • Modified polyurethane resin and preparation method thereof
  • Modified polyurethane resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Group A allocation ratio

[0043]

[0044]

[0045] The number-average molecular weight of described two-terminal hydroxyl modified silicone oil (trade name is 2110, Shanghai Taige) is 1000,

[0046] The polyadipate-1,4-butylene glycol ester diol is self-produced by our company with a number average molecular weight of 1000 and named as PE-10.

[0047] Group B distribution ratio

[0048]

[0049] Described highly reactive polyether triol trade name is GEP330N, and molecular weight is 3000.

[0050] The polyadipate-based polyester polyol is a polyadipate-ethylene glycol-1,4-butylene glycol ester diol with a number average molecular weight of 2000 produced by our company, named PE-1.

[0051] The tetrahydrofuran-ethylene oxide copolyethylene glycol is DC-1800E with a number average molecular weight of 1800.

[0052] The preparation method of A component comprises the following steps:

[0053] (1) Put 42g of double-terminated hydroxyl modified silicone oil 211...

Embodiment 2

[0061] Group A allocation ratio

[0062] With the distribution ratio of group A in embodiment 1

[0063] Group B distribution ratio

[0064]

[0065]

[0066] The trade name of the highly active polyether triol is GEP330N, and its molecular weight is 3000.

[0067] The polyadipate-based polyester polyol is a polyadipate-1,4-butylene glycol ester diol with a number-average molecular weight of 2000 produced by our company, named as PE-6.

[0068] The tetrahydrofuran-ethylene oxide copolyethylene glycol is DC-1800E with a number average molecular weight of 1800.

[0069] The preparation method of A component: the same as the preparation method of A component in Example 1

[0070] The preparation method of component B: (1) put 69g high activity polyether triol GEP330N, 115gPE-1, 46gDC-1800E, 12.37g ethylene glycol and 447g N, N-dimethylformamide calculated according to the solid content of the reaction into After stirring and mixing in the reactor, add 55.5g of MDI50 to ...

Embodiment 3

[0074] Group A allocation ratio

[0075]

[0076]

[0077] The number-average molecular weight of described two-terminal hydroxyl modified silicone oil (trade name is 2110, Shanghai Taige) is 1000,

[0078] The polyadipate-1,4-butylene glycol ester diol is self-produced by our company with a number average molecular weight of 1000 and named as PE-10.

[0079] Group B distribution ratio

[0080] With the B component formula in embodiment 1

[0081] The preparation method of A component comprises the following steps:

[0082] (1) Put 63g of double-terminated hydroxyl modified silicone oil 2110 into the reaction kettle, stir and mix evenly, then add 33.1g of diphenylmethane-4,4'-diisocyanate to start the reaction, the reaction temperature is 70°C-80°C, The solid content of the reaction is 100%, NCO / OH=2.1, the NCO content is tested after 2 hours of reaction time, and after reaching the theoretical value, start the second step of reaction;

[0083](2) Add 378g N,N-dimeth...

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Abstract

The invention relates to modified polyurethane resin and a preparation method thereof. A component A of the modified polyurethane resin is prepared from the following components in percentage by mass: 8.5 to 10.0 percent of diphenyl methane-4,4'-diisocyanate; 13.5 to 15.6 percent of poly-1,4-butylene adipate glycol; 3.5 to 6.0 percent of dihydroxyl-terminated modified silicone oil; 1.3 to 2.0 percent of 1,4-butylene glycol; 49 to 56 percent of solvent; 14 to 21 percent of solvent 2; 0.02 to 0.03 percent of malic acid; 0.1 to 0.6 percent of erucyl amide; a component B of the modified polyurethane resin is prepared from the following components in percentage by mass: 3.5 to 6.5 percent of MDI-50; 2.2 to 4.5 percent of diphenyl methane-4,4'-diisocyanate; 1.8 to 6.5 percent of high activity polyether triol; 9.5 to 10.8 percent of poly(polyol adipate); 3.8 to 8.7 percent of tetrahydrofuran-ethylene oxide copolymerization diol; 1.1 to 1.7 percent of ethylene glycol; 49 to 56 percent of solvent; 14 to 21 percent of solvent 2. According to the modified polyurethane resin, the component A and component B are matched for use, so that excellent rebound resilience as well as real leather membrane feel and soft and smooth feel are realized; meanwhile, the breathability, hydrolysis and aging resistance, and wear and scrape resistance are excellent, and the modified polyurethane resin can be applied to the field of pure dry method clothing leather.

Description

technical field [0001] The invention relates to a modified polyurethane resin, in particular to a modified polyurethane resin and a preparation method thereof. The modified polyurethane resin is applied in the field of synthetic leather polyurethane surface layer resin, especially in the field of garment leather, so that the garment leather It has a delicate feeling closer to real leather, excellent air permeability, hydrolytic aging resistance, and abrasion resistance and scratch resistance. Importantly, it can be used in the field of pure dry-laid garment leather without a wet-laid layer. Background technique [0002] Garment leather is a kind of clothing material. The discovery, invention and innovation of garment leather reflect people's continuous pursuit of material and spiritual needs such as fashion, leisure, comfort, aesthetics and art. With the increasingly fierce global competition, the competition in the garment leather industry lies not only in labor cost and s...

Claims

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Application Information

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IPC IPC(8): C08G18/10C08G18/12C08G18/42C08G18/61C08G18/48C08G18/66C08G18/65C08G18/76
CPCC08G18/10C08G18/12C08G18/4009C08G18/4018C08G18/4238C08G18/4812C08G18/4829C08G18/4845C08G18/61C08G18/6511C08G18/6541C08G18/6607C08G18/664C08G18/6659C08G18/7671C08G18/348
Inventor 钱建中钱洪祥郭海英范汉清陈芳顾婷
Owner 福建汇得新材料有限公司
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