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Aqueous acrylic emulsion for automobile electrophoretic finish 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, etc., achieve good leveling and gloss, good product stability, and reduce peeling. effect of possibility

Active Publication Date: 2021-10-08
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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  • Aqueous acrylic emulsion for automobile electrophoretic finish paint and preparation method thereof
  • Aqueous acrylic emulsion for automobile electrophoretic finish paint and preparation method thereof
  • Aqueous acrylic emulsion for automobile electrophoretic finish paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 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.

[0030] 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.

[0031] The initiator was dissolved in 50 parts of water and stirred to obtain the initiator solution, which was set aside.

[0032] Take 300 parts of water and mix with reactive polymerizable emulsifier and water-based solid acrylic res...

Embodiment 2

[0034]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.

[0035] 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.

[0036] The initiator was dissolved in 30 parts of water and stirred to obtain the initiator solution, which was set aside.

[0037] Take 370 parts of water and mix with reactive polymerizable emulsifier and water-based solid acry...

Embodiment 3

[0039] 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.

[0040] 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.

[0041] The initiator was dissolved in 40 parts of water and stirred to obtain the initiator solution, which was set aside.

[0042] Take 340 parts of water and mix with reactive polymerizable emulsifier and water-based solid acryl...

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Abstract

Aqueous acrylic emulsion for automotive electrophoretic finish paint, belonging to the technical field of automotive finish paint emulsion, by weight, including 50-80 parts of styrene, 50-100 parts of methyl methacrylate 200-250 parts of n-butyl acrylate, 2-10 parts of methacrylic acid, 0-50 parts of acrylonitrile, 1-8 parts of aliphatic polyurethane acrylate, 3-15 parts of reactive polymerizable emulsifier, water-based solid acrylic acid 0-10 parts of resin, 1-5 parts of initiator, 430-600 parts of water, 0-5 parts of ammonia water, 0-3 parts of defoamer, and 0-3 parts of bactericide. The present invention also provides a preparation method of the water-based acrylic emulsion. The emulsion of the present invention and the synthesized water-based automotive topcoat emulsion do not contain APEO, and have low formaldehyde, no benzene series and other pollutant emissions, and the particle size distribution is very narrow. The product Good 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 Patents(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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