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Anti-yellowing water-based coating agent and preparation method and coating technology thereof

A water-based coating and anti-yellowing technology, which is applied in textiles, papermaking, fiber treatment, etc., can solve the problems of high cost and limited application, and achieve short production process, reduce aryl activity, save cost and energy consumption Effect

Inactive Publication Date: 2014-01-01
DRAGON CLAN CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic research on non-yellowing polyurethane has made some achievements, but the high cost limits its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An anti-yellowing water-based coating agent, prepared from the following components in proportion by weight: 97 parts of acrylate-modified polyurethane water emulsion, 1 part of ZnO powder with a particle size of 20-500 nanometers, 0.5 1.5 parts of leveling agent, 1.5 parts of crosslinking agent and 0.5 parts of acrylic thickener. The acrylate-modified polyurethane aqueous emulsion is a water-based polyurethane emulsion with a core-shell structure prepared by core-shell polymerization with aromatic polyurethane as the core and polyacrylate as the shell.

[0025] The preparation method of the anti-yellowing water-based coating agent: first 97 parts by weight of acrylate-modified polyurethane aqueous emulsion and 1 part by weight of ZnO powder with a particle size of 20-500 nanometers are dispersed by ultrasonic waves for 40 minutes, and then added 0.5 parts by weight of leveling agent, 1.5 parts by weight of cross-linking agent and 0.5 parts by weight of acrylic thickene...

Embodiment 2

[0028] An anti-yellowing water-based coating agent, prepared from the following components in proportion by weight: 95 parts of acrylate-modified polyurethane aqueous emulsion, 0.5 part of ZnO powder with a particle size of 20-500 nanometers, 1 0.5 parts of leveling agent, 0.5 parts of crosslinking agent and 2 parts of acrylic thickener. The acrylate-modified polyurethane aqueous emulsion is a water-based polyurethane emulsion with a core-shell structure prepared by core-shell polymerization with aromatic polyurethane as the core and polyacrylate as the shell.

[0029] The preparation method of the anti-yellowing water-based coating agent: first disperse 95 parts by weight of acrylate-modified polyurethane aqueous emulsion and 0.5 parts by weight of ZnO powder with a particle size of 20 to 500 nanometers for 40 minutes, and then add 1 part by weight of leveling agent, 0.5 parts by weight of crosslinking agent and 2 parts by weight of acrylic thickener, stir evenly until the vi...

Embodiment 3

[0032] An anti-yellowing water-based coating agent, prepared from the following components in proportion by weight: 90 parts of acrylate-modified polyurethane aqueous emulsion, 0.75 parts of ZnO powder with a particle size of 20-500 nanometers, 0.75 parts 1.5 parts of leveling agent, 2 parts of crosslinking agent and 1.5 parts of acrylic thickener. Acrylate modified polyurethane aqueous emulsion is PUA-830 produced by Xiamen Sanyi Jiutai Trading Co., Ltd.

[0033] The preparation method of the anti-yellowing water-based coating agent: first 90 parts by weight of acrylate-modified polyurethane aqueous emulsion and 0.75 parts by weight of ZnO powder with a particle size of 20-500 nanometers are dispersed by ultrasonic waves for 40 minutes, and then added 0.75 parts by weight of leveling agent, 2 parts by weight of cross-linking agent and 1.5 parts by weight of acrylic thickener, stir well until the viscosity reaches 3.5×10 4 mPa.s.

[0034] The coating process of the anti-yell...

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Abstract

The invention discloses an anti-yellowing water based coating agent. The anti-yellowing water based coating agent is prepared by the matching of the following components by weight: 90-97 parts of an acrylic ester modified polyurethane water solution, 0.5-1 part of a nanometer ZnO, 0.5-1 part of a flatting agent, 0.5-2 part(s) of a cross-linking agent, and 0.5-2 part(s) of a thickening agent. The anti-yellowing water based coating agent has the advantages of aquosity and environmental protection, non-pollution and the like, belongs to a resource-saving product, is low in cost, meanwhile can be mixed with other raw materials, and is an ideal coating adhesive product.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to an anti-yellowing water-based coating agent, a preparation method thereof and a coating process thereof. Background technique [0002] In recent years, water-based polyurethane has been widely used due to its environmental protection and superior comprehensive performance. Water-based polyurethane is developing rapidly. With the goal of replacing traditional solvent-based polyurethane, Bayer, Dainippon Ink Company, Wyandotte Chemical Company, etc. have launched a series of water-based polyurethane products of different grades, and the application fields are constantly expanding. [0003] However, most polyurethane emulsions on the market in our country are currently limited in their application due to their extreme yellowing. The reason is that the aryl groups in the aromatic polyurethane structure are prone to generate quinones under the conditions of high temperature, ultraviolet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/564D06M11/44
Inventor 潘锋芳罗耀发张云波蒋荣华
Owner DRAGON CLAN CHINA
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