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EP0276469A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method of electrodeposition coating, and water-base paint resin composition

Assignee: Kansai Paint Co Ltd
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Filing: 1987-12-22
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Granted: —
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Expires: 2007-12-22
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Abstract

Abstract A method of electrodeposition coating which comprises electrodepositing a water-base electrodeposition coating composition comprising an ionic group-containing resin as a film-forming vehicle on an article to be coated and then heating the coated article to form a cured coated film, wherein the ionic group-containing resin contains a functional group selected from the group consisting of hydroxysilane and alkoxysilane groups, and can be cross-­linked by the condensation reaction of the functional group, and a resin composition for a water-base paint, said composition comprising a resin containing a cationic group and a functional group selected from hydroxysilane and alkoxysilane groups as a film-forming vehicle.

Inventors

  • 👤 Akira C/O Gijutsuhonbu Tominaga

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 22:34
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4434; C09D5/4442; C09D5/4407; C09D5/4411; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31652; Y10T428/31663

Claims Analysis

Total Claims: 23
Claim 1
Independent Claim 71 words
A method of electrodeposition coating which comprises electrodepositing a water-base electrodeposition coating composition comprising an ionic group-containing resin as a film-forming vehicle on an article to be coated and then heating the coated article to form a cured coated film, wherein the ionic group-containing resin contains a functional group selected from the group consisting of hydroxysilane and alkoxysilane groups, and can be cross-­linked by the condensation reaction of the functional group.
Claim 2
Independent Claim 71 words
A method of electrodeposition coating which comprises electrodepositing a water-base electrodeposition coating composition comprising an ionic group-containing resin as a film-forming vehicle on an article to be coated and then heating the coated article to form a cured coated film, wherein the ionic group-containing resin contains a functional group selected from the group consisting of hydroxysilane and alkoxysilane groups, and can be cross-­linked by the condensation reaction of the functional group.
Claim 3
Dependent Claim 18 words
The method of claim 1 wherein the ionic group of the ionic group-containing resin is a cationic group.
Claim 4
Dependent Claim 22 words
The method of claim 1 wherein the ionic group of the ionic group-containing resin is an amino group neutra­lized with an acid.
Claim 5
Dependent Claim 18 words
The method of claim 1 wherein said functional group is introduced into the resin via an Si-C linkage.
Claim 6
Dependent Claim 21 words
The method of claim 1 wherein a base resin for the ionic group-containing resin is a resin containing a hydroxyl group.
Claim 7
Dependent Claim 24 words
The method of claim 5 wherein the base resin contains the hydroxyl group in an amount of 0.2 to 10 milliequivalents/gram of dry resin.
Claim 8
Dependent Claim 22 words
The method of claim 1 wherein the base resin for the ionic group-containing resin is an epoxy resin or an acrylic resin.
Claim 9
Dependent Claim 20 words
The method of claim 1 wherein the amount of the ionic group is 0.1 to 2 milliequivalents/gram of dry resin.
Claim 10
Dependent Claim 20 words
The method of claim 1 wherein the amount of said functional group is 0.2 to 20 milliequivalents/gram of dry resin.
Claim 11
Dependent Claim 13 words
The method of claim 1 wherein the water-base electrodeposition coating composition contains acetyl­acetone.
Claim 12
Dependent Claim 30 words
A resin composition for a water-base paint, said composition comprising a resin containing a cationic group and a functional group selected from hydroxysilane and alkoxysilane groups as a film-forming vehicle.
Claim 13
Dependent Claim 30 words
A resin composition for a water-base paint, said composition comprising a resin containing a cationic group and a functional group selected from hydroxysilane and alkoxysilane groups as a film-forming vehicle.
Claim 14
Dependent Claim 19 words
The composition of claim 11 wherein the resin is cured under heat by the condensation of said functional group.
Claim 15
Dependent Claim 17 words
The composition of claim 11 wherein the cationic group is an amino group neutralized with an acid.
Claim 16
Dependent Claim 18 words
The composition of claim 11 wherein said func­tional group is introduced into the resin via an Si-C linkage.
Claim 17
Dependent Claim 12 words
The composition of claim 11 wherein said resin contains a hydroxyl group.
Claim 18
Dependent Claim 20 words
The composition of claim 15 wherein the amount of the hydroxyl group is 0.2 to 10 milliequivalents/gram of dry resin.
Claim 19
Dependent Claim 16 words
The composition of claim 11 wherein the resin is an epoxy resin or an acrylic resin.
Claim 20
Dependent Claim 20 words
The composition of claim 11 wherein the amount of the cationic group is 0.1 to 2 milliequivalents/gram of dry resin.
Claim 21
Dependent Claim 20 words
The composition of claim 11 wherein the amount of said functional group is 0.2 to 20 milliequivalents/­gram of dry resin.
Claim 22
Dependent Claim 10 words
The composition of claim 11 wherein the resin contains acetylacetone.
Claim 23
Dependent Claim 9 words
An article coated by the method of claim 1.

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