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Cationic electrodeposition paint composition

A cationic electrodeposition and composition technology, applied in electrophoretic coatings, epoxy coatings, polyurea/polyurethane coatings, etc., can solve the problems of insufficient compatibility, coverage, finishing, and insufficient balance of corrosion resistance , to achieve the effect of excellent electrodeposition coating suitability, good finishing, excellent finishing and corrosion resistance

Inactive Publication Date: 2015-11-11
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the cationic electrodeposition coating compositions described in Patent Documents 1 and 2 are insufficient in the balance of electrodeposition coating suitability, coverage, finish, and corrosion resistance on alloyed hot-dip galvanized steel sheets. Either performance is problematic

Method used

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  • Cationic electrodeposition paint composition
  • Cationic electrodeposition paint composition
  • Cationic electrodeposition paint composition

Examples

Experimental program
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Effect test

manufacture example 1

[0124] [Manufacturing Example 1] Manufacture of Matrix Resin Solution No.1

[0125] Add 400 parts of bisphenol A and 0.5 parts of tetrabutylammonium bromide to 1000 parts of jER828EL (manufactured by Japan Electronics Co., Ltd., trade name, epoxy resin, epoxy equivalent 190, molecular weight 350), and make it react at 160° C. The epoxy equivalent reaches 800, and the product a is obtained 1 . Next, in product a 1 Add 170 parts of soybean oil fatty acid (acid value 200mgKOH / g) and 0.5 part of tetrabutylammonium bromide to it, and react it at 140°C until the epoxy equivalent reaches 1370, and obtain the product a 2 .

[0126] In addition, soybean oil fatty acid and jER828EL were mixed and reacted so that the equivalent ratio of [carboxyl group in soybean oil fatty acid] / [epoxy group in epoxy resin] would be 0.34.

[0127] Next, in product a 2 Add 210 parts of ethylene glycol monobutyl ether, 80 parts of diethanolamine, and 95 parts of ketimides of diethylenetriamine (84% ac...

manufacture example 2

[0128] [Manufacturing Example 2] Manufacture of Matrix Resin Solution No. 2

[0129] Add 400 parts of bisphenol A and 0.5 parts of tetrabutylammonium bromide to 1000 parts of jER828EL (manufactured by Japan Electronics Co., Ltd., trade name, epoxy resin, epoxy equivalent 190, molecular weight 350), and make it react at 160° C. The epoxy equivalent reaches 800, and the product b is obtained 1 . Next, in product b 1 Add 125 parts of coconut oil fatty acid (acid value 267mgKOH / g) and 0.5 part of tetrabutylammonium bromide to it, and react it at 140°C until the epoxy equivalent reaches 1300, and obtain the product b 2 .

[0130] In addition, coconut oil fatty acid and jER828EL were mixed and reacted so that the equivalent ratio of [carboxyl group in coconut oil fatty acid (monocarboxylic acid)] / [epoxy group in epoxy resin] was 0.34.

[0131] Next, in product b 2 Add 200 parts of ethylene glycol monobutyl ether, 80 parts of diethanolamine, and 95 parts of ketimides of diethyle...

manufacture example 3

[0132] [Manufacturing Example 3] Manufacture of Matrix Resin Solution No.3

[0133] Add 400 parts of bisphenol A and 0.5 parts of tetrabutylammonium bromide to 1000 parts of jER828EL (manufactured by Japan Electronics Co., Ltd., trade name, epoxy resin, epoxy equivalent 190, molecular weight 350), and make it react at 160° C. The epoxy equivalent reaches 800, and the product c is obtained 1 . Next, in product c 1 Add 150 parts of castor oil fatty acid (acid value 190mgKOH / g) and 0.5 part of tetrabutylammonium bromide to it, react it at 140°C until the epoxy equivalent reaches 1240, and obtain the product c 2 .

[0134] In addition, castor oil fatty acid and jER828EL were mixed and reacted so that the equivalent ratio of [carboxyl group in castor oil fatty acid] / [epoxy group in epoxy resin] would be 0.29.

[0135] Next, in product c 2 Add 200 parts of ethylene glycol monobutyl ether, 90 parts of diethanolamine, and 95 parts of ketimides of diethylenetriamine (84% active in...

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Abstract

The invention provides a cation electro-deposition coating composition with good electro-deposition coating adaptability, finish machining performance, anticorrosion performance and mechanical stability used for coating alloying fusion galvanized steel sheet. The cation electro-deposition coating composition comprises flowing components with specified amounts: a modified amino-containing epoxy resin (A) prepared by reaction of monocarboxylicacid (a1) with a carbon number more than 8, epoxy resin (a2) which has at least two epoxy groups in one molecule and has epoxy equivalent of 300-2500, and an amino-containing compound (a3); a xytene formaldehyde resin modified amino-containing epoxy resin (B) prepared by reaction of epoxy resin (b1) with an epoxy equivalent of 180-2500, a xytene formaldehyde resin (b2) with a phenolic hydroxyl, and an amino-containing compound (b3); and a blocking polyisocyanates curing agent (C).

Description

[0001] This application is a divisional application of a patent application with an application date of April 2, 2010, an application number of 201010154497.4, and an invention title of "Cationic Electrodeposition Coating Composition". technical field [0002] The present invention relates to a cationic electrodeposition coating composition excellent in covering properties, suitability for electrodeposition coating on alloyed hot-dip galvanized steel sheets, finishing properties (shishangri properties), corrosion resistance and mechanical stability . Background technique [0003] Cationic electrodeposition coatings are widely used as primer coatings for metal products such as automobile bodies because of their excellent coating workability and good corrosion resistance. In recent years, in metal products such as automobile bodies, alloyed hot-dip galvanized steel sheets for the purpose of improving corrosion resistance have been widely used, and from the perspective of impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D175/12C09D5/44
Inventor 西口滋朗岛崎昭彦
Owner KANSAI PAINT CO LTD
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