Patent ID: 7674846
Filing Date: 2010-03-09
Classification: C08G,C09D,Y10T

Abstract:
1. A paint composition of cationic electrodeposition comprising: about 42 to about 47 percent by weight of a cationic electrodeposition resin composition; about 6 to about 13 percent by weight of a pigment paste composition; and about 40 to about 48 percent by weight of ion exchange water, based on a total weight of the paint composition of cationic electrodeposition; wherein the cationic electrodeposition resin composition comprises: a cationic electrodeposition resin dispersion, a cationic micro gel, and ethylene glycol monohexyl ether; wherein the cationic electrodeposition resin dispersion comprises a cationic electrodeposition resin dispersed in an aqueous media including zinc acetate and deionized water; wherein the cationic electrodeposition resin is prepared by polymerizing a cationic electrodeposition synthetic resin including an amino group and a polyisocyanate curing agent having a partially blocked isocyanate functional group; wherein the cationic electrodeposition synthetic resin including an amino group is prepared by addition reactions of a polyepoxide and at least one of a primary, secondary, and tertiary amine group; and wherein the pigment paste composition comprises a pigment grinding vehicle, a carbon black, a bismuth compound, and ion exchange water; and wherein the carbon black is present in an amount of about 3 to about 12 percent by weight, based on the total weight of the pigment paste composition.