Cationic polymers and their use in electrodeposition
AssigneePPG Industries, Inc.
InventorEdward L. Jozwiak, Jr.
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Abstract
Polymeric products are prepared by polymerizing in aqueous medium under addition polymerization conditions a dispersed phase of a polymerizable, ethylenically unsaturated monomer or mixture of polymerizable, ethylenically unsaturated monomers in the presence of an at least partially neutralized adduct of a polyepoxide and a primary and/or secondary amine and which contains unsaturation. The polymeric products are useful in water-based coating compositions particularly for use in cationic electrodeposition.
Claims34
A stable, aqueous dispersion of a cationic polymeric product prepared by polymerizing in aqueous medium under free radical initiated addition polymerization conditions:
- (A) an aqueous dispersed phase of a polymerizable, ethylenically unsaturated monomer composition, in the presence of
- (B) an at least partially acid neutralized polyepoxide-primary and/or secondary amine adduct which contains pendent unsaturation.
A method of preparing a polymeric product comprising:
- (A) dispersing a polymerizable, ethylenically unsaturated monomer composition in aqueous medium in the presence of an at least partially acid-neutralized polyepoxide-primary and/or secondary amine adduct which contains pendent unsaturation.
- (B) subjecting the dispersion prepared in (A) to free radical initiated addition polymerization conditions so as to form a stable aqueous dispersion of a cationic polymeric product.
Dependencies are inferred from the claim text.