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Electro-deposition paint composition

A technology of electrophoretic coatings and compositions, applied in electrophoretic coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of the appearance and anti-rust performance of the coating film, and achieve the effect of excellent physical properties

Active Publication Date: 2019-02-05
KCC CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, if the thickness of the coating film is reduced by simply using a small amount of paint for coating, the appearance of the coating film and the anti-rust performance will be greatly reduced.

Method used

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  • Electro-deposition paint composition
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  • Electro-deposition paint composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Example 1: Production of cationic electrophoresis resin composition using diethanolamine

[0086] According to the components shown in Table 4 below, a cationic electrophoresis resin composition was prepared according to the following method.

[0087] 【Table 4】

[0088] ingredient

Parts by weight

Epoxy 828 1)

133.67

Bisphenol A

54.27

Methoxypropanol

9.36

Benzyl dimethylamine

0.53

Ethoxylated BPA 2)

10.8

The urethane curing agent of Production Example 1

173.93

Diethanolamine

17.76

KT-22 3)

15.73

Vacuum solvent recovery

-39.87

Deionized water

368.44

70% methanesulfonic acid

4.14

Deionized water

251.25

[0089] 1) Diglycidyl ether of bisphenol A (epoxy equivalent: 188) (Kukdo Chemical)

[0090] 2) Bisphenol A ethoxylate (CECA BELGIUM S.A.)

[0091] 3) Methyl isobutyl ketone solution containing 73% diketimine capped with methyl isobutyl ketone for diethylene triamine (AirProducts)

[0092] Epoxy resin 828, bisphenol A, ethoxylated BPA, and methoxypropanol were put in...

Embodiment 2

[0093] Example 2: Production of cationic electrophoresis resin composition using diethanolamine

[0094] According to the components shown in Table 5 below, a cationic electrophoresis resin composition was prepared in the same manner as in Example 1. First add dimethanolamine to the above components and react for 30 minutes, then put KT-22 and react at 120°C for 90 minutes, and then confirm that the epoxy-amine equivalent of the mixture is 25,000.

[0095] 【table 5】

[0096]

[0097]

[0098] 1) Diglycidyl ether of bisphenol A (epoxy equivalent: 188) (Kukdo Chemical)

[0099] 2) Bisphenol A ethoxylate (CECA BELGIUM S.A.)

[0100] 3) Methyl isobutyl ketone solution containing 73% diketimine capped with methyl isobutyl ketone for diethylene triamine (AirProducts)

Embodiment 3

[0101] Example 3: Preparation of cationic electrophoresis resin composition using N-methylethanolamine

[0102] According to the components shown in Table 6 below, a cationic electrophoresis resin composition was prepared in the same manner as in Example 1. N-methylethanolamine was first added to the above components and reacted for 30 minutes, then KT-22 was put in and reacted at 120°C for 90 minutes, and then it was confirmed that the epoxy-amine equivalent of the mixture was 30,000.

[0103] 【Table 6】

[0104] ingredient

Parts by weight

Epoxy 828 1)

136.97

Bisphenol A

55.61

Methoxypropanol

9.59

Benzyl dimethylamine

0.55

Ethoxylated BPA 2)

10.80

The urethane curing agent of Production Example 1

173.93

N-Methylethanolamine

13.02

KT-22 3)

16.12

Vacuum solvent recovery

-40.40

Deionized water

368.44

70% methanesulfonic acid

4.14

Deionized water

192.08

[0105] 1) Diglycidyl ether of bisphenol A (epoxy equivalent: 188) (Kukdo Chemical)

[0106] 2) Bisphenol A ethoxylate...

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PUM

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Abstract

The present invention provides a modified polyepoxide-amine resin for electro-deposition paint and an electro-deposition paint composition containing same, the modified polyepoxide-amine resin for electro-deposition paint having an epoxy-amine equivalent weight of 20,000-40,000 and being obtained by chain-extending, in the presence of a polyepoxide-amine resin containing a tertiary amine group, apolyepoxide resin having an epoxy equivalent weight of 800-1,200, and a polyol having a molecular weight of 100-500.

Description

Technical field [0001] The invention relates to a resin for electrophoretic coating and an electrophoretic coating composition containing the resin. Background technique [0002] Electrophoretic coating is a method of depositing the coated object as the anode and cathode in the electrophoretic coating composition, and passing a direct current between the coated object and the corresponding electrode, and electro-oozing the coating film on the surface of the coated object to form a coating. Membrane method. Recently, the rapid development and development of water-soluble paints that can prevent pollution and fire problems have gradually adapted to automotive primers. At present, in most resins for electrophoretic coatings, a system that neutralizes the polyepoxide-amine reaction product with an acid is used. [0003] In addition, since the electrophoretic coating is a method of oozing out the coating film, metal materials are mainly used as materials that make the equipment conduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/44C09D163/00C09D175/04C09D5/08
CPCC09D5/08C09D5/44C09D163/00C09D175/04C09D5/4438
Inventor 金泰皓郑万龙朴志晧刘善玉崔寿阷
Owner KCC CORP CO LTD