LOW TEMPERATURE CURING CATHODIC ELECTROCOATING COMPOSITION

摘要

An electrocoating composition containing an epoxy amine adduct which is the reaction product of a polyepoxide resin and an amine, an acrylic amine resin and a blocked polyisocyanate crosslinking agent; wherein the composition is prepared by blending a first emulsion of the epoxy amine adduct and the blocked polyisocyanate crosslinking agent with a second emulsion of the acrylic amine resin and a blocked polyisocyanate crosslinking agent; where the first and second emulsions are each individually formed by blending the adduct or resin with the blocked crosslinking agent and then adding an organic acid to form a salt which forms a stable aqueous emulsion.