E.i. Dupont De Nemours and Company

Robert J Sikora

Ding Y Chung

Allisa Gam

John Joseph Vincent

An improved aqueous cathodic electrocoating composition having a binder of an epoxy-amine adduct and a blocked polyisocyanate crosslinking agent; wherein the improvement is the use of a catalytic amount of bismuth trioxide dispersed in the electrocoating composition.

Bismuth oxide catalyst for cathodic electrocoating compositions

An improved aqueous electrocoating composition having a binder of an epoxy-amine adduct and a blocked polyisocyanate crosslinking agent; wherein the improvement is the use of zinc hydroxyphosphite pigment as a corrosion inhibitive pigment and an as a curing catalyst which provides an excellent cure under overbake and underbake conditions and forms a coating with excellent chip resistance and the throwing power of the electrocoating composition is significantly improved.

Cathodic electrodeposition coatings containing zinc hydroxyphosphite

An improved aqueous electrocoating composition having a binder of an epoxy-amine adduct and a blocked polyisocyanate crosslinking agent; wherein the improvement is the use of an effective amount of a blend of a zinc containing compound and a lead pigment to form an electrocoating composition that has significantly improved throwing power and provides a coating that has the necessary properties such as chip, solvent and corrosion resistance.

Growing community of inventors

Detroit, MI, United States of America

Robert J Sikora