Aqueous cationic coating from amine-epoxy adduct, polyamide, and semi-blocked polyisocyanate, acid salt

摘要

A cationic electrophoretic coating composition comprises a resinous binder which is prepared by reacting an epoxy resin-amine adduct (A) with a partially blocked polyisocyanate (C) and mixing or reacting a polyamide (B) with the resulting product, or by reacting a polyamide (B) with a partially blocked polyisocyanate (C) and mixing or reacting an epoxy resin-amine adduct (A) with the resulting product.