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A solvent-free polyurethane slurry and its preparation method and its application in hydrolysis-resistant 8-12-year vacuum-absorbing grain synthetic leather

A solvent-free polyurethane and synthetic leather technology, applied in the field of synthetic leather, can solve the problems of synthetic leather such as difficult to guarantee hydrolysis resistance, high crosslinking degree of body shape, difficult embossing process, etc., and achieve excellent durability and soft hand feeling , Improve the effect of heat resistance

Active Publication Date: 2020-06-02
HEFEI ANLI POLYURETHANE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two-component solvent-free polyurethane resin endows synthetic leather with a body-shaped cross-linked structure. Although it has excellent durability, it also has certain shortcomings: First, if the polyester-type two-component solvent-free polyurethane resin is used, the synthetic leather obtained It is also difficult to guarantee the hydrolysis resistance of the leather to be stable for more than 3 years; second, if the formed body has a high degree of crosslinking and the solvent-free polyurethane resin coating has a clear network structure, it is difficult to apply to the embossing process

Method used

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  • A solvent-free polyurethane slurry and its preparation method and its application in hydrolysis-resistant 8-12-year vacuum-absorbing grain synthetic leather
  • A solvent-free polyurethane slurry and its preparation method and its application in hydrolysis-resistant 8-12-year vacuum-absorbing grain synthetic leather
  • A solvent-free polyurethane slurry and its preparation method and its application in hydrolysis-resistant 8-12-year vacuum-absorbing grain synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A solvent-free polyurethane slurry for hydrolysis-resistant 8-12-year vacuum-absorbed synthetic leather middle layer slurry, which consists of component A and component B:

[0057] Its component A consists of the following components:

[0058]

[0059] Described component B is made up of following components:

[0060]

[0061] The polycarbonate diol CD220PL is a liquid polycarbonate diol product with a molecular weight of 2000 from Japan Co., Ltd., and the polyoxypropylene diol DDL-3000D and DDL-2000D are from Shandong Dexin Federal Chemical Industry Co., Ltd. Polyoxypropylene diols with molecular weights of 3000 and 2000 produced by the company, the tertiary water is self-made water with a conductivity less than or equal to 5uS / cm (25°C), and the pore opener CO-170 is from Jiangsu Zhongshan Chemical Co., Ltd. The produced special polyether polyol with a hydroxyl value of 160-180mgKOH / g, the glass fiber is 300-mesh alkali-free glass fiber powder produced by Shenz...

Embodiment 2

[0073] A solvent-free polyurethane slurry for hydrolysis-resistant 8-12-year vacuum-absorbed synthetic leather middle layer slurry, which consists of component A and component B:

[0074] Its component A consists of the following components:

[0075]

[0076] Described component B is made up of following components:

[0077] Polyoxypropylene diol (DDL-2000D) 60 parts

[0078] Polyisocyanate 40 parts

[0079] Inhibitor (benzoyl chloride) 0.01 parts

[0080] The polycarbonate diol C1100 is a liquid polycarbonate diol product with a molecular weight of 1000 from Bayer MaterialScience in Germany, and the polyoxypropylene diol DDL-3000D and DDL-2000D are from Shandong Dexin Federal Chemical Industry Co., Ltd. The polyoxypropylene glycol of the molecular weight 3000 and 2000 of production, described methyldiethanolamine chain extender is the product of BASF company, and described tertiary water is the water that self-made conductivity is less than or equal to 5uS / cm (25 ℃), desc...

Embodiment 3

[0092] A solvent-free polyurethane slurry for hydrolysis-resistant 8-12-year vacuum-absorbed synthetic leather middle layer slurry, which consists of component A and component B:

[0093] Its component A consists of the following components:

[0094]

[0095]

[0096] Described component B is made up of following components:

[0097]

[0098] The polycarbonate diol C-1090 is a polycarbonate diol with a molecular weight of 1000 produced by Japan Kuraray Co., Ltd., and the polyoxypropylene diol DDL-3000D and DDL-2000D are from Shandong Dexin Federal Chemical Industry Co., Ltd. Co., Ltd. produces polyoxypropylene diols with molecular weights of 3000 and 2000. The 1,3-PG chain extender is a DuPont bio-based chain extender product. 25°C), the cell opener CO-170 is a special polyether polyol with a hydroxyl value of 160-180mgKOH / g produced by Shanghai Gaoqiao Petrochemical Company, and the glass fiber is Shenzhen Yataida Technology Co., Ltd. The 1000 purpose alkali-free g...

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Abstract

The invention provides a solvent-free polyurethane sizing agent, a preparation method and an application thereof in hydrolysis-resisting 8-12-year vacuum striated synthetic leather. The solvent-free polyurethane sizing agent is composed of a component A and a component B at a mass ratio of 100:(45-110); the component A is composed of polycarbonate diols, polyoxypropylene diol, an alcohol chain extender, three-level water, glass fiber, a tapping agent, a delayed catalyst, a foam stabilizer and a photo-thermal stabilizer; the component B is composed of polyoxypropylene diol, polyisocyanates, a polymerization inhibitor and a catalyst. The vacuum striated synthetic leather with the solvent-free polyurethane as a middle layer is prepared in the manner of adopting a knurling technology for acquiring a stable foam structure by using water as foaming agent for participating into reaction and then adopting a vacuum striating technology. The product of the vacuum striated synthetic leather feels soft and has strong leather feeling.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather, and relates to a solvent-free polyurethane slurry and a preparation method thereof and its application in vacuum grain-absorbing synthetic leather with hydrolysis resistance of 8-12 years. Background technique [0002] The development of the polyurethane synthetic leather industry in the direction of environmental protection, energy saving, and emission reduction has gradually become a trend. Among them, water-based polyurethane synthetic leather, solvent-free polyurethane synthetic leather, and TPU have gradually become new materials to replace traditional solvent-based polyurethane synthetic leather. Solvent-free polyurethane synthetic leather has gradually become a research hotspot in the synthetic leather industry due to its excellent physical properties, low energy consumption in production and processing, fewer production processes, and excellent environmental performance. [0003...

Claims

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Application Information

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IPC IPC(8): C08G18/79C08G18/76C08G18/66C08G18/48C08G18/44C08K7/14D06N3/14D06N3/00C08G101/00
CPCC08G18/44C08G18/4808C08G18/6607C08G18/6622C08G18/725C08G18/7671C08G18/797C08K7/14C08G2110/0083D06N3/005D06N3/0063D06N3/0077D06N3/0079D06N3/147D06N2209/1642D06N2211/28
Inventor 王海峰孔为青李晓飞姚克俭
Owner HEFEI ANLI POLYURETHANE NEW MATERIAL