High-glossiness acrylic resin for electrophoretic coating and preparation method thereof

An acrylic resin, electrophoretic coating technology, applied in electrophoretic coatings, antifouling/underwater coatings, coatings, etc., can solve the problems of uneven paint film, poor stability, not fineness, etc., to achieve high gloss and good stability , the effect of reducing the dosage

Active Publication Date: 2018-08-14
江阴恒兴涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing electrophoretic coatings, in order to meet the requirements of high brightness, usually add brightening substances to improve its gloss, and its gloss can reach low light (60 degrees gloss meter is greater than or equal to 60 degrees), but its stability is poor, 3- Delamination will occur after 5 months of storage, and the paint film will be uneven and not delicate after use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The preparation method of high-gloss acrylic resin for this electrophoretic coating is as follows:

[0021] Step 1. Configure the mixed solution

[0022] Isooctyl methacrylate, n-butyl acrylate, methyl methacrylate, styrene, acrylic acid, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, polycarbonate , dinonyl naphthalene sulfonic acid mixed to form a mixed solution;

[0023] Step 2. Water-soluble acrylic resin molding

[0024] In the reaction vessel, use n-butanol, isopropanol and deionized water accounting for 5%-15% of the total amount of deionized water as base materials to raise the temperature to 95-105°C, and drop the mixed solution prepared in step 1 into the reaction vessel , the dropping time is 150-200min, drop the composite initiator, the composite initiator is added dropwise four times, and the dropping speed is controlled according to the intensity of the reaction; Add the neutralizing agent into the reaction vessel and st...

Embodiment 1

[0026] Embodiment 1, a kind of high-gloss acrylic resin for electrophoretic coating, it is prepared by the raw material of following mass fraction: 3 parts of isooctyl methacrylate, 8 parts of n-butyl acrylate, 7 parts of methyl methacrylate, 2 parts of styrene, 3 parts of acrylic acid, 0.5 parts of 2-hydroxyethyl methacrylate, 1 part of 2-hydroxyethyl acrylate, 1 part of 2-hydroxypropyl acrylate, 1 part of polycarbonate (the number average molecular weight is 8000) , 0.1 part of dinonyl naphthalene sulfonic acid, 0.5 part of composite initiator (azobisisobutylcyanide and DCP (dicumyl peroxide) according to 1:3), 1 part of triethanolamine neutralizer, defoaming 0.01 parts of solvent, 10 parts of n-butanol, 10 parts of isopropanol and 30 parts of deionized water.

Embodiment 2

[0027] Embodiment 2, a kind of high-gloss acrylic resin for electrophoretic coating, it is prepared by the raw material of following mass fraction: 4 parts of isooctyl methacrylate, 8 parts of n-butyl acrylate, 6 parts of methyl methacrylate, 3 parts of styrene, 4 parts of acrylic acid, 0.3 parts of 2-hydroxyethyl methacrylate, 1.5 parts of 2-hydroxyethyl acrylate, 1 part of 2-hydroxypropyl acrylate, 1 part of polycarbonate (the number average molecular weight is 5000) , 0.15 parts of dinonyl naphthalene sulfonic acid, 0.8 parts of composite initiator (azobisisobutylcyanide and DCP (dicumyl peroxide) according to 1:3), 1.2 parts of triethanolamine neutralizer, defoaming 0.01 parts of solvent, 10 parts of n-butanol, 10 parts of isopropanol and 30 parts of deionized water.

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PUM

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Abstract

The invention relates to high-glossiness acrylic resin for electrophoretic coating and a preparation method thereof. The high-glossiness acrylic resin for electrophoretic coating is prepared from thefollowing raw materials in parts by mass: 3 to 4 parts of isooctyl methacrylate, 6 to 9 parts of n-butyl acrylate, 5 to 8 parts of methyl methacrylate, 1 to 3 parts of styrene, 2 to 4 parts of acrylicacid, 0.1 to 0.5 part of 2-hydroxyethyl methacrylate, 1 to 2 parts of 2-hydroxyethyl acrylate, 1 to 2 parts of 2-hydroxypropyl acrylate, 0.5 to 1 part of polycarbonate, 0.05 to 0.3 part of dinonylnaphthalenesulfonic acid, 0.5 to 1 part of compound initiator, 1 to 2 parts of neutralizing agent, 0.01 to 0.02 part of de-foaming agent, 8 to 15 parts of n-butyl alcohol, 8 to 15 parts of isopropyl alcohol and 10 to 50 parts of de-ionized water. The finally-prepared electrophoretic coating has high glossiness (the glossiness is greater than 75 degrees when being detected by a 60-degree glossiness instrument), can be stored for one year or more, has no layering phenomenon and has good stability; a paint film has good planeness and a strong anti-pollution capability.

Description

technical field [0001] The invention relates to a high-gloss acrylic resin for electrophoretic paint, which belongs to the technical field of paint. Background technique [0002] Electrophoresis is one of the most effective methods of coating metal workpieces. Electrophoretic coating is a new type of coating with low pollution, energy saving, resource saving and good corrosion resistance. It has the advantages of smooth coating film, good water resistance and chemical resistance, and it is easy to realize the mechanization and automation of the coating industry. It is suitable for the coating of workpieces with complex shapes, edges, corners, and holes. It is widely used in the coating of hardware such as automobiles, automatic vehicles, electromechanical appliances, and home appliances. [0003] With the continuous development of electrophoretic coatings, there are more and more market applications, and higher and higher requirements are put forward for its gloss and stabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F212/08C08F220/06C08F220/20C08K5/42C08L69/00C09D133/08C09D133/12C09D5/44C09D5/16
CPCC08F220/14C08F220/18C08F220/1804C08K5/42C08L69/00C09D5/1668C09D5/1687C09D5/4411C09D5/448C09D133/08C09D133/12C08F220/1808C08F212/08C08F220/06C08F220/20
Inventor 林乾隆葛丽珠
Owner 江阴恒兴涂料有限公司
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