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Microfiber superfine fold line bonding layer resin and production process thereof

A bonding layer and microfiber technology, applied in the field of resin materials, can solve the problems of poor crease resistance of yangbar leather, and achieve the effect of safe and reliable processing and enhanced flexural strength.

Inactive Publication Date: 2021-07-13
浙江诚迅新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the crease resistance of sheepbuck leather is poor, which makes the creases on the surface of sheepbuck leather more obvious.

Method used

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  • Microfiber superfine fold line bonding layer resin and production process thereof
  • Microfiber superfine fold line bonding layer resin and production process thereof
  • Microfiber superfine fold line bonding layer resin and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The resin raw material composition and proportioning that embodiment 1 provides are shown in Table 1.

[0051] Raw material composition and proportioning of table 1 embodiment 1

[0052]

[0053]

[0054] Wherein: the molecular weight of polytetrahydrofuran ether polyol is 1000.

[0055] The preparation process includes the following steps:

[0056] S1: N,N-dimethylformamide, toluene, polytetrahydrofuran ether polyol, polyester polyol, 2,2-dimethylol propionic acid, 2,2-dimethylol butyric acid, catalyst, Add co-catalyst etc. into the reactor and stir for 5 minutes, the reaction temperature is controlled at 45°C;

[0057] S2: Add excess diphenylmethane diisocyanate according to 1:1.05, control the reaction temperature at 72°C, and control the reaction time at 60 minutes;

[0058] S3: When the viscosity of the material in step S2 reaches 40,000 cps / 25°C, continue to add an appropriate amount of N,N-dimethylformamide, a small amount of ethylene glycol and a small ...

Embodiment 2

[0067] The raw material composition and proportioning of the resin raw materials provided in Example 2 are shown in Table 2, and the preparation method is the same as in Example 1.

[0068] Raw material composition and proportioning of table 2 embodiment 2

[0069]

[0070]

[0071] Wherein: the molecular weight of polytetrahydrofuran ether polyol is 1000.

Embodiment 3

[0073] The raw material composition and proportioning of the resin raw materials provided in Example 3 are shown in Table 3, and the preparation method is the same as in Example 1.

[0074] Raw material composition and proportioning of table 3 embodiment 3

[0075]

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Abstract

The invention relates to a microfiber superfine crease bonding layer resin and a production process thereof. The microfiber superfine crease bonding layer resin is prepared from 57 to 70 parts of a solvent, 9 to 11 parts of diphenylmethane diisocyanate, 9 to 12 parts of methylbenzene, 26 to 33 parts of polyhydric alcohol, 0.8 to 1.2 parts of a chain extender, 0.5 to 1.0 part of a coupling agent, 1.0 to 1.5 parts of a catalyst, 0.5 to 0.9 part of a promoter and 0.4 to 0.8 part of a terminating agent. Wherein the content of the N, N-dimethylformamide is 28 to 36 parts, and the content of the ethyl ester is 29 to 34 parts; and the polyol comprises polyether polyol and polyester polyol, and the weight part ratio of the polyether polyol to the polyester polyol is 1: 3. According to the present invention, the resin leather forming hand feeling is soft, the resin crosslinking degree is high, and the folding line after the resin leather forming is superfine.

Description

technical field [0001] The invention relates to the technical field of resin materials, in particular to a superfiber superfine crease bonding layer resin and a production process thereof. Background technique [0002] In China, people are used to calling the artificial leather produced with PU resin and non-woven fabric as synthetic leather (synthetic leather for short). After continuous research and development, PU synthetic leather has grown rapidly in terms of product quality, variety, and output. Its performance is getting closer and closer to natural leather, and some properties even exceed natural leather, reaching the same level as natural leather. The degree of indistinguishability occupies a very important position in human daily life. PU synthetic leather is closer to leather fabrics in terms of chemical structure. It does not use plasticizers to achieve softness, so it will not become hard and brittle. At the same time, it has the advantages of rich colors and v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/12C08G18/40C08G18/42C08G18/48C08G18/34D06N3/14
CPCC08G18/6625C08G18/4018C08G18/4854C08G18/4202C08G18/12D06N3/147D06N3/146D06N2209/103D06N2211/28C08G18/348
Inventor 宗军业鲁明友
Owner 浙江诚迅新材料有限公司
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