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Waterborne acrylic emulsion for automobile electrophoretic finish-coat paint and preparation method thereof

A water-based acrylic and topcoat technology, applied in the direction of coating, can solve the problems of poor adhesion of electrophoretic paint, easy peeling off of paint film, affecting gloss and other problems, achieve fast curing speed, good product stability, and reduce the possibility of peeling sexual effect

Active Publication Date: 2019-05-03
GUANGDONG HENGGUANG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing ordinary water-based acrylic emulsion often cannot meet such harsh requirements, and the adhesion on electrophoretic paint is often poor, and the paint film is easy to peel off; in the process of high-temperature spraying, the leveling is poor, which seriously affects the appearance such as gloss Effect

Method used

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  • Waterborne acrylic emulsion for automobile electrophoretic finish-coat paint and preparation method thereof
  • Waterborne acrylic emulsion for automobile electrophoretic finish-coat paint and preparation method thereof
  • Waterborne acrylic emulsion for automobile electrophoretic finish-coat paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare raw materials, in parts by weight, 60 parts of styrene, 50 parts of methyl methacrylate, 220 parts of n-butyl acrylate, 2 parts of methacrylic acid, 10 parts of acrylonitrile, 4 parts of aliphatic polyurethane acrylate CN9002, react Type polymerizable emulsifier AR10 3 parts, ER10 3 parts, water-based solid acrylic resin 5 parts, initiator 1 part, water 500 parts, ammonia water, defoamer, bactericide.

[0029] Take 150 parts of water and reactive polymerizable emulsifiers AR10 and ER10 and stir well, then add styrene, methyl methacrylate, n-butyl acrylate, methacrylic acid, acrylonitrile, aliphatic polyurethane acrylate CN9002 into the reaction kettle , and stirred for 1 h to obtain a monomer pre-emulsion, which was set aside.

[0030] The initiator was dissolved in 50 parts of water and stirred to obtain the initiator solution, which was set aside.

[0031] Take 300 parts of water and mix with reactive polymerizable emulsifier and water-based solid acrylic res...

Embodiment 2

[0033]Raw materials are prepared, in parts by weight, including 60 parts of styrene, 50 parts of methyl methacrylate, 220 parts of n-butyl acrylate, 2 parts of methacrylic acid, 10 parts of acrylonitrile, 4 parts of aliphatic polyurethane acrylate CN996, Reactive polymerizable emulsifier AR10 3 parts, ER10 3 parts, water-based solid acrylic resin 5 parts, initiator 2 parts, water 500 parts, ammonia water, defoamer, bactericide.

[0034] Take 100 parts of water and reactive polymerizable emulsifiers AR10 and ER10 and stir well, then add styrene, methyl methacrylate, n-butyl acrylate, methacrylic acid, acrylonitrile, aliphatic urethane acrylate CN996 into the reaction kettle , and stirred for 1.5h to obtain a monomer pre-emulsion, which is set aside.

[0035] The initiator was dissolved in 30 parts of water and stirred to obtain the initiator solution, which was set aside.

[0036] Take 370 parts of water and mix with reactive polymerizable emulsifier and water-based solid acry...

Embodiment 3

[0038] Prepare raw materials, by weight, including 60 parts of styrene, 50 parts of methyl methacrylate, 220 parts of n-butyl acrylate, 2 parts of methacrylic acid, 10 parts of acrylonitrile, 2 parts of aliphatic polyurethane acrylate CN9002 and CN996 2 parts, reactive polymerizable emulsifier AR10 3 parts, ER10 3 parts, water-based solid acrylic resin 5 parts, initiator 3 parts, water 500 parts, ammonia water, defoamer, bactericide.

[0039] Take 120 parts of water and reactive polymerizable emulsifiers AR10 and ER10 and stir well, then add styrene, methyl methacrylate, n-butyl acrylate, methacrylic acid, acrylonitrile, aliphatic urethane acrylate CN996 and CN9002 to the reaction Kettle, stirred for 1.2h to obtain monomer pre-emulsion, set aside.

[0040] The initiator was dissolved in 40 parts of water and stirred to obtain the initiator solution, which was set aside.

[0041] Take 340 parts of water and mix with reactive polymerizable emulsifier and water-based solid acryl...

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Abstract

The invention provides a waterborne acrylic emulsion for an automobile electrophoretic finish-coat paint, belonging to the technical field of automobile finish-coat paint emulsions. The waterborne acrylic emulsion comprises the following components by weight: 50 to 80 parts of styrene, 50 to 100 parts of methyl methacrylate, 200 to 250 parts of n-butyl acrylate, 2 to 10 parts of methacrylic acid,0 to 50 parts of acrylonitrile, 1 to 8 parts of aliphatic urethane acrylate, 3 to 15 parts of a reaction type polymerizable emulsifier, 0 to 10 parts of waterborne solid acrylic resin, 1 to 5 parts ofan initiator, 430 to 600 parts of water, 0 to 5 parts of ammonia water, 0 to 3 parts of an antifoaming agent and 0 to 3 parts of a bactericide. The invention also provides a preparation method for the waterborne acrylic emulsion. The waterborne acrylic emulsion and a waterborne automobile topcoat emulsion synthesized therefrom provided by the invention have the advantages of no APEO, low formaldehyde content, no discharging of benzene compounds and pollution, narrow particle size distribution and good product stability.

Description

technical field [0001] The invention belongs to the technical field of automobile finish paint emulsion, relates to a water-based acrylic emulsion for automobile finish paint, in particular to a water-based acrylic emulsion for automobile electrophoretic finish paint and a preparation method thereof, and the electrophoresis of the water-based acrylic emulsion and the substrate of the present invention The paint has good adhesion, and at the same time, it does not stick during workshop processing and storage, and the paint leveling effect is good, and the coating effect is good. The preparation method of the invention is simple, easy to operate, and the preparation process is stable. Background technique [0002] With the development and progress of science and technology, there are more and more international requirements for VOC emissions, and the standards issued are becoming more and more stringent. Since the 1990s, European and American automobile factories have graduall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F265/00C08F220/18C08F212/08C08F220/14C08F220/06C08F220/44C08F2/24C09D151/08
Inventor 郝丽娟闫树德吴斌华朱美娟赵通田军
Owner GUANGDONG HENGGUANG CHEM CO LTD
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