CATHODIC ELECTROCOAT COATING COMPOSITION

摘要

The invention provides cathodic electrocoat compositions having a carbamate functional resin with a cationic salting site, a crosslinking agent reactive with the carbamate functional resin and a carbonate curing agent. The invention also provides methods of cathodically electrodepositing a coating on a substrate using the coating compositions of the invention. The composition s of the invention provide urethane crosslinking sites without the use of disadvantageous blocked isocyanates and cure at temperatures lower than prio r art cathodic electrocoat compositions.