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US 4,730,010 AGranted
Quarternary ammonium group-containing resins for use in cathodic electrodeposition coating systems
AssigneesNippon Paint Co., Ltd., Nippon Oil Co., Ltd.
InventorsYasuyuki Tsuchiya, Koji Ito, Koichi Hagihara, Hiroyuki Sakamoto, Yutaka Otsuki
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Abstract
A cationic water-dispersible resin having quarternary ammonium groups is produced by reacting an acid-addition salt of a polymeric tertiary amine derived from a partially epoxidized polybutadiene-based polymer with an aliphatic secondary amine. The cationic water-dispersible resin is useful for preparing pigment paste and coating compositions to be used in cathodic electrodeposition coating systems.
Claims8
A cathodic electrodeposition coating composition which comprises:
- (A) 100 parts by weight of a tertiary amino group-containing film-forming polymer derived from partially epoxidized homopolymer or copolymer of butandiene having a molecular weight of 500 to 5,000 and an aliphatic amine, optionally followed by reacting with an ethylenically unsaturated polymerizable carboxylic acid;
- (B) 20 to 100 parts by weight of a reaction product of a polyphenol polyglycidyl ether with an ethylenically unsaturated polymerizable carboxylica acid;
- (C) 0.005 to 1. 0 parts as elementary metal by weight of an oxide or organic acid salt of manganese, cobalt or copper;
- (D) 5 to 100 parts by weight of a cationic water-dispersible resin having quaternary ammonium groups, said cathionic water-disperible resin being a product produced by reacting (a) an acid-addition salt of a polymeric tertiary amine derived from a partially epoxidized homopolymer or copolymer of butadiene having a molecular weight of 500 to 5,000 and an aliphatic secondary amine, and (b) a mono-epoxide compound;
- said components (A) to (D) being dissolved or dispersed in an aqueous medium containing an amount of an organic acid sufficient to neutralize said component (A).
2 more elements
Dependencies are inferred from the claim text.