EP0439074A2
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EP
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Resin composition for cationically electrodepositable paint
Assignee: Kansai Paint Co Ltd
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Filing: 1991-01-18
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Granted: —
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Expires: 2011-01-18
Abstract
Abstract A resin composition for a cationically electrodepositable paint comprising (A) a resin having hydroxyl groups and cationic groups, (B) an epoxy resin having at least 2 epoxy functional groups each of which comprises an epoxy group directly bound to an alicyclic ring and/or bridged alicyclic ring on average per molecule, and (C) a finely divided gelled polymer as principal components, wherein said finely divided gelled polymer is obtained by emulsion polymerizing (C-1) a polymerizable monomer containing at least two radically polymerizable unsaturated groups in the molecule, and (C-2) a radically polymerizable unsaturated monomer other than the one mentioned in (C-1), above in the presence of a reactive emulsifier containing an allyl group in the molecule.
Inventors
- 👤 Teijin Katayama
- 👤 Eisaku Nakatani
- 👤 Haruo Nagaoka
- 👤 Kenji Yamamoto
- 👤 Reiziro Nishida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 20:18
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08F; C08F283/00; C08F283/10; C08F291/00; C08G; C08G59/00; C08G59/18; C08G59/20; C09D5/00; C09D5/44; C09D5/4473
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
116 words
A resin composition for a cationically electrodepositable paint comprising (A) a resin havng hydroxyl groups and cationic groups, (B) an epoxy resin having at least 2 epoxy functional groups each of which comprises an epoxy group directly bound to an alicyclic ring and/or bridged alicyclic ring on average per molecule, and (C) a finely divided gelled polymer as principal components, wherein said finely divided gelled polymer is one obtained by emulsion polymerizing (C-1) a polymerizable monomer containing at least two radically polymerizable unsaturated groups in the molecule, and (C-2) a radically polymerizable unsaturated monomer other than the one mentioned in (C-1) above in the presence of a reactive emulsifier containing an allyl group in the molecule.
Claim 2
Dependent Claim
116 words
A resin composition for a cationically electrodepositable paint comprising (A) a resin havng hydroxyl groups and cationic groups, (B) an epoxy resin having at least 2 epoxy functional groups each of which comprises an epoxy group directly bound to an alicyclic ring and/or bridged alicyclic ring on average per molecule, and (C) a finely divided gelled polymer as principal components, wherein said finely divided gelled polymer is one obtained by emulsion polymerizing (C-1) a polymerizable monomer containing at least two radically polymerizable unsaturated groups in the molecule, and (C-2) a radically polymerizable unsaturated monomer other than the one mentioned in (C-1) above in the presence of a reactive emulsifier containing an allyl group in the molecule.
Claim 3
Dependent Claim
17 words
The resin composition of claim 1, wherein said resin (A) has primary hydroxyl groups and cationic groups.
Claim 4
Dependent Claim
31 words
The resin composition of claim 1, wherein said resin (A) is a reaction product obtained by reacting a polyepoxide compound obtained from a polyphenol compound and epichlorohydrin with a cationizing agent.
Claim 5
Dependent Claim
21 words
The resin composition of claim 2, said resin (A) has a primary hydroxyl equivalent within the range of 200 to 1,000.
Claim 6
Dependent Claim
26 words
The resin composition of claim 1, wherein said resin (A) has an amine value within the range of 3 to 200 calculated as KOH (mg/g solids).
Claim 7
Dependent Claim
22 words
The resin composition of claim 1, wherein said epoxy resin (B) has at least 3 epoxy functional groups on average per molecule.
Claim 8
Dependent Claim
79 words
The resin composition of claim 1, wherein said epoxy functional group of said epoxy resin (B) has a structure represented by either of the following general formulae (I) to (IV) wherein R 1 , R 2 , R 3 , Rs, R 6 , R 7 , R 10 and R 11 represent H, CH 3 or C 2 H 5 , respectively, and R 4 , R 8 and R 9 represent H or CH 3 , respectively.
Claim 9
Dependent Claim
22 words
The resin composition of claim 9, wherein said epoxy resin (B) has an epoxy functional group represented by the following formula (V)
Claim 10
Dependent Claim
22 words
The resin composition of claim 7, wherein said epoxy resin (B) has an epoxy functional group represented by the following formula (VI)
Claim 11
Dependent Claim
22 words
The resin composition of claim 1, wherein said epoxy resin (B) has an epoxy equivalent within the range of 100 to 2,000.
Claim 12
Dependent Claim
22 words
The resin composition of claim 15, wherein said epoxy resin (B) has an epoxy equivalent within the range of 150 to 500.
Claim 13
Dependent Claim
24 words
The resin composition of claim 1, wherein said epoxy resin (B) has a number average molecular weight within the range of 400 to 100,000.
Claim 14
Dependent Claim
24 words
The resin composition of claim 1, wherein said epxoy resin (B) has a number average molecular weight within the range of 700 to 50,000.
Claim 15
Dependent Claim
31 words
The resin composition of claim 1, wherein the weight ratio of the solids content of said epoxy resin (B) to said resin (A) is within the range of 0.2 to 1.0.
Claim 16
Dependent Claim
81 words
The resin composition of claim 1 containing at least one metal compound selected from the group consisting of a lead compound, a zirconium compound, a cobalt compound, an aluminum compound, a manganese compound, a copper compound, a zinc compound, an iron compound, a chromium compound and a nickel compound is contained in such an amount that the metal content based on the total weight of the resin (A) and the epoxy resin (B) is not more than 10 % by weight.
Claim 17
Dependent Claim
109 words
The resin composition of claim 1, wherein said finely divided gelled polymer (C) is the one obtained by emulsion polymerizing (C-1) a polymerizable monomer containing at least two radicaly polymerizable unsaturated groups in the molecule, (C-2) a radically polymerizable unsaturated monomer consisting of (C-2-(I)) a polymerizable unsaturated vinyl silane monomer containing a vinylic double bond and a hydrolyzable alkoxy silane group in the molecule, (C-2-(11)) a polymerizable unsaturated monomer containing a vinylic double bond and a hydroxyl group, and (C-2) the other polymerizable unsaturated monomer other than said polymerizable unsaturated monomers (C-2-(I)) and (C-2-(II)) in the presence of a cationic reactive emulsifier containing an allyl group in the molecule.
Claim 18
Dependent Claim
118 words
The resin composition of claim 1, wherein said finely divided gelled polymer (C) is the one obtained by emulsion polymerizing (C-1) a polymerizable monomer containing at least too radically polymerizable unsaturated groups in the molecule, (C-2) a radically polymerizable unsaturated monomer consisting of (C-2-(I)) a polymerizable unsaturated vinyl silane monomer containing a vinylic double bond and a hydrolyzable alkoxy silane group in the molecule, (C-2-(11)) a polymerizable unsaturated monomer containing a vinylic double bond and a hydroxyl group, and (C-2) the other polymerizable unsaturated monomer other than said polymerizable unsaturated monomers (C-2-(I)) and (C-2-(11)) in the presence of a cationic reactive emulsifier containing an allyl group in the molecule using a water-soluble azoamide compound as a polymerization initiator.
Claim 19
Dependent Claim
122 words
The resin composition of claim 1, wherein said finely divided gelled polymer (C) is the one obtained by emulsion polymerizing (C-1) a polymerizable monomer containing at least two radically polymerizable unsaturated groups in the molecule, (C-2) a radically polymerizable unsaturated monomer consisting of (C-2-(I)) a polymerizable unsaturated vinyl silane monomer containing a vinylic double bond and a hydrolyzable alkoxy silane group in the molecule, (C-2-(II)) a polymerizable unsaturated monomer containing a vinylic double bond and a hydroxyl group, and (C-2-(III)) an unsaturated monomer containing an amino group in the molecule, and (C-2) the other polymerizable unsaturated monomer other than said polymerizable unsaturated monomers (C-2-(I)), (C-2-(II)) and (C-2-(III)) in the presence of a cationic reactive emulsifier containing an allyl group in the molecule.
Claim 20
Dependent Claim
130 words
The resin composition of claim 1, wherein said finely divided gelled polymer (C) is the one obtained by emulsion polymerizing (C-1) a polymerizable monomer containing at least two radically polymerizable unsaturated groups in the molecule, (C-2) a radically polymerizable unsaturated monomer consisting of (C-2-(1)) a polymerizable unsaturated vinyl silane monomer containing a vinylic double bond and a hydrolyzable alkoxy silane group in the molecule, (C-2-(II)) a polymerizable unsaturated monomer containing a vinylic double bond and a hydroxyl group, (C-2-(III)) an unsaturated monomer containing an amino group in the molecule, and (C-2) the other polymerizable unsaturated monomer other than said polymerizable unsaturated monomers (C-2-(I)), (C-2-(II)) and (C-2-(III)) in the presence of a cationic reactive emulsifier containing an allyl group in the molecule using a water-soluble azoamide compound as a polymerization initiator.
Claim 21
Dependent Claim
42 words
The resin composition of claim 1, wherein said finely divided gelled polymer (C) is contained in an amount of 5 to 30 % by weight based on the sum of said resin (A) and said epoxy resin (B) calculated as solids content.
Claim 22
Dependent Claim
11 words
A cationically electrodepositable paint containing the resin composition of claim 1.
Claim 23
Dependent Claim
10 words
A product coated with cationically electrodepositable paint of claim 21.
References Cited (Backward Citations)
No citation records indexed.
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