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Preparation method of aqueous / solvent-free composite environmentally friendly polyurethane synthetic leather

A water-based polyurethane, solvent-free technology, applied in the field of synthetic leather manufacturing, can solve problems such as being unfavorable to health and environmental protection, and achieve the effects of strong skin and skin feel, strong pattern three-dimensional effect, and moderate cost

Active Publication Date: 2016-02-24
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane synthetic leather is an ideal substitute material for genuine leather, but its disadvantage is that it must use a strong polar organic solvent DMF as a solvent, which is not conducive to the health and environmental protection of the production process and the consumption process of finished products.

Method used

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  • Preparation method of aqueous / solvent-free composite environmentally friendly polyurethane synthetic leather
  • Preparation method of aqueous / solvent-free composite environmentally friendly polyurethane synthetic leather
  • Preparation method of aqueous / solvent-free composite environmentally friendly polyurethane synthetic leather

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Embodiment 1

[0050] The synthetic leather of this embodiment includes a water-based surface layer and a solvent-free intermediate layer, the water-based surface layer resin is a thermosetting polyether type water-based polyurethane resin, and the solvent-free intermediate layer is a thermosetting two-component polyether type solvent-free layer. Foamed polyurethane resin, the two-component material is a prepolymer of polyether type combination A material and polyether type B material.

[0051] In the present embodiment, the preparation method of water-based / solvent-free composite environment-friendly polyurethane synthetic leather specifically includes the following steps:

[0052] (1) Preparation of the water-based surface layer: coating the water-based surface layer slurry on the release paper, controlling the coating thickness of the water-based surface layer slurry to be 0.2 mm, drying at 120 ° C for 3 minutes and then curing and forming to obtain a water-based surface layer;

[0053] The...

Embodiment 2

[0062] The synthetic leather of this embodiment includes a water-based surface layer and a solvent-free intermediate layer, the water-based surface layer resin is a thermosetting polyether type water-based polyurethane resin, and the solvent-free intermediate layer is a thermosetting two-component polyether type solvent-free layer. Foamed polyurethane resin, the two-component material is a prepolymer of polyether type combination A material and polyether type B material.

[0063] In the present embodiment, the preparation method of water-based / solvent-free composite environment-friendly polyurethane synthetic leather specifically includes the following steps:

[0064] (1) Preparation of the water-based surface layer: coating the water-based surface layer slurry on the release paper, controlling the coating thickness of the water-based surface layer slurry to be 0.4 mm, drying at 130 ° C for 3 minutes and then curing and forming to obtain a water-based surface layer;

[0065] T...

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Abstract

The present invention discloses a preparation method of aqueous / solvent-free composite environmentally friendly polyurethane synthetic leather, the synthetic leather comprises an aqueous elastomer surface layer and a solvent-free foaming intermediate layer, the aqueous elastomer surface layer resin is thermosetting polyether aqueous polyurethane resin, the solvent-free foaming intermediate layer is thermosetting two-component polyether solvent-free foaming polyurethane resin, and the two-component material is polyether combination A material and polyether B material prepolymer. The preparation process does not use any organic solvent, achieves the synthetic leather production and processing, finished product zero solvent use and health and environmental friendliness; at the same time, the advantages of the aqueous polyurethane resin and the solvent-free polyurethane resin are combined, and the obtained synthetic leather products has strong pattern stereoscopic impression, soft hand feeling, superior hydrolysis resistance and other physical properties, and skin and leather feeling equivalent to natural dermis.

Description

1. Technical field [0001] The invention relates to a method for manufacturing polyurethane synthetic leather, in particular to a method for preparing a water-based / solvent-free composite type environment-friendly polyurethane synthetic leather, which belongs to the field of synthetic leather manufacturing. 2. Background technology [0002] With the development of the national economy and the improvement of people's living standards, consumers not only have high requirements for the quality of clothing, shoes and hats, sofa furniture, and automotive interior products, but also have very high requirements for the environmental performance of materials. At present, although leather products have the advantages of comfortable hand feeling, good elasticity and good durability, due to the limited natural leather resources, high-performance, high-quality and high-value-added products made of top layer leather are in short supply, and prices continue to rise. Become synonymous with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14
CPCD06N3/0043D06N3/0063D06N3/0065D06N3/0088D06N3/0097D06N3/145D06N2209/1607D06N2211/10D06N2211/106D06N2211/20D06N2211/28
Inventor 王锐林王海峰高兵孔为青宋远周李晓飞范培宏苏星吴文王燕武笪丽红武春余姚克俭黄万里刘兵罗运东王德松
Owner ANHUI ANLI MATERIAL TECH
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