Patents Examined by Mayekar
  • Cathodic electrodeposition coatings having an additive for improved throwing power
    Patent number: 5314594
    Abstract: 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 an additive of an alkyl thioester or a polymeric product of an epoxy resin, polyalkylene glycol and a sugar 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.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: May 24, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ding Y. Chung, Kenneth S. Kirshenbaum