Cationic polymers and their use in electrodeposition
AssigneePPG Industries, Inc.
InventorJoseph F. Bosso
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Abstract
Polymeric products are prepared 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 a quaternary ammonium base group-containing polymer which is formed from reacting a polyepoxide with an unsaturated tertiary amine in the presence of a proton source. The polymeric products are useful in water-based coating compositions particularly for use in cationic electrodeposition.
Claims32
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) a quaternary ammonium base group-containing polymer which is formed from reacting a polyepoxide with an unsaturated tertiary amine in the presence of a proton source.
A method for preparing a polymeric product dispersed in aqueous medium comprising:
- (A) dispersing a polymerizable ethylenically unsaturated monomer composition in aqueous medium and in the presence of a quaternary ammonium base group-containing polymer which is formed from reacting a polyepoxide with an unsaturated tertiary amine in the presence of a proton source;
- (B) subjecting the dispersion of (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.