A METHOD FOR PREPARING A PARTICULARLY ADAPTED RESIN COMPOSITION FOR USE AS A FILM FORMING COMPOSITION IN CATHODIC ELECTRODEPOSITION PROCEDURES

摘要

Cathodic electrodepositable resin compositions particularly adapted for use as film forming compositions in cathodic electrodeposition processes. The resin is the reaction product of a modified epoxy formed by reacting a polyepoxide with a water soluble or water miscible polyol, an excess of polyamine, and an aliphatic monoepoxide. The resin, when combined with a cross-linking agent and solubilized in an aqueous electrodeposition bath, is capable of depositing high build coatings in a short period of time with a low cross-linking temperature in a cathodic electrodeposition process. The resin compositions are salted with an acid and used as components of aqueous cathodic electrodeposition baths.