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Polyurethane integral leather cushion water-based coating and polyurethane integral leather cushion

A water-based coating and self-skinning technology, which is applied to the water-based coating of polyurethane self-skinning cushions and the field of polyurethane self-skinning cushions. Effect of strength and flexibility, good color fastness to rubbing

Active Publication Date: 2021-12-07
鹤山市鹤威科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to overcome the defect of the existing coating production process and the deficiency that the quality of the polyurethane self-skinning cushion produced by the traditional technology is not up to standard, and provide the water-based coating of the polyurethane self-skinning cushion and the polyurethane self-skinning cushion

Method used

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  • Polyurethane integral leather cushion water-based coating and polyurethane integral leather cushion
  • Polyurethane integral leather cushion water-based coating and polyurethane integral leather cushion
  • Polyurethane integral leather cushion water-based coating and polyurethane integral leather cushion

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Embodiment 1

[0057] The preparation of embodiment 1 polyurethane self-skinning cushion

[0058] A polyurethane self-skinning cushion water-based coating, in parts by mass, comprising the following components: 75 parts of water-emulsifiable bisphenol A type epoxy resin, 13 parts of hyperbranched polyethyleneimine, 12.5 parts of water-based polyurethane prepolymer ;

[0059] Among them, the epoxy equivalent of the water-emulsifiable bisphenol A type epoxy resin is 180g·mol -1 ; The molecular weight of hyperbranched polyethyleneimine is 10600; the solid content of waterborne polyurethane prepolymer is 30%, and its end group is isocyanate group;

[0060] The preparation method of described polyurethane self-crusting cushion water-based coating, comprises the following steps:

[0061] S1. After mixing the water-based epoxy resin and hyperbranched polyethyleneimine according to the above mass parts, add water at 80°C and stir for 35 minutes;

[0062] S2. Add water-based polyurethane prepolyme...

Embodiment 2

[0067] The preparation of embodiment 2 polyurethane self-skinning cushion

[0068] A polyurethane self-skinned cushion water-based coating, in parts by mass, comprising the following components: 66 parts of glycerol triglycidyl ether, 17 parts of hyperbranched polyethyleneimine, 20 parts of water-based polyurethane prepolymer;

[0069] Among them, the epoxy equivalent of glycerol triglycidyl ether is 141g·mol -1 ; The molecular weight of hyperbranched polyethyleneimine is 1200; the solid content of water-based polyurethane prepolymer is 15%, and its terminal group is isocyanate group;

[0070] The preparation method of described polyurethane self-crusting cushion water-based coating, comprises the following steps:

[0071] S1. After mixing the water-based epoxy resin and hyperbranched polyethyleneimine according to the above mass parts, add water at 75°C and stir for 360 minutes;

[0072] S2. Add water-based polyurethane prepolymer to the reaction system of step S1 while sti...

Embodiment 3

[0077] The preparation of embodiment 3 polyurethane from crust cushion

[0078] A polyurethane self-skinned cushion water-based coating, in parts by mass, comprising the following components: 84 parts of propylene glycol diglycidyl ether, 9 parts of hyperbranched polyethyleneimine, and 5 parts of water-based polyurethane prepolymer;

[0079] Among them, the epoxy equivalent of propylene glycol diglycidyl ether is 220g·mol -1 ; The molecular weight of hyperbranched polyethyleneimine is 20000; The solid content of waterborne polyurethane prepolymer is 45%, and its end group is isocyanate group;

[0080] The preparation method of described polyurethane self-crusting cushion water-based coating, comprises the following steps:

[0081] S1. After mixing the water-based epoxy resin and hyperbranched polyethyleneimine according to the above mass parts, add water at 85°C and stir for 30 minutes;

[0082] S2. Add the water-based polyurethane prepolymer at 85° C. for 1 hour while stirr...

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Abstract

The invention discloses a polyurethane self-skinned cushion water-based coating and a polyurethane self-skinned cushion. The invention provides a polyurethane self-skinned cushion water-based coating, which comprises the following components in parts by mass: 66-84 parts of water-based epoxy resin, 9-17 parts of hyperbranched polyethyleneimine, and water-based polyurethane prepolymer 5 to 20 copies. The water-based coating has good adhesion and flexibility, as well as color fastness to rubbing, resistance to reagents, low temperature resistance and high temperature resistance, and the preparation method of the water-based coating has the advantages of non-toxicity, no pollution and no residue, It has wide application prospects in the preparation of polyurethane self-skinned cushions; the present invention further provides a method for preparing polyurethane self-skinned cushions with water-based coatings, and the cushions prepared by the method have good wear resistance, antifouling, and Chemical, cleaning agent resistance, aging resistance, mass production and wide use.

Description

technical field [0001] The invention belongs to the technical field of coating preparation. More specifically, it relates to a polyurethane self-skinning cushion water-based coating and a polyurethane self-skinning cushion. Background technique [0002] With the development of technology, polyurethane materials are widely used in the fields of coatings, adhesives, foam plastics, synthetic fibers and their elastomers, and have achieved diversified production, enriching people's lives. In recent years, the domestic furniture industry has developed rapidly, and the demand for high-end products has increased sharply. In order to improve the comfort of people's lives, office chairs, bar chairs and seats in public places (hospitals, high-speed rail stations and airports, etc.) are also more expensive. Many use polyurethane self-skinning materials. [0003] The traditional technology of producing polyurethane self-skinning cushions usually adopts the method of spraying paint film...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/58C08G18/64C08G18/34C08G18/12C09D175/06C08J9/36C08L75/04
CPCC08G18/12C08G18/348C08G18/4081C08G18/4238C08G18/58C08G18/6423C08G18/6659C08J9/365C08J2375/04C08J2475/08C09D175/06C08G18/40
Inventor 李兆荣
Owner 鹤山市鹤威科技发展有限公司
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