With Additional Coating Composition Containing An Atom Of Chromium, Phosphorus Or Sulfur Patents (Class 148/255)
  • Corrosion inhibiting aqueous compositions comprising metal-chelating diphenolamine compounds
    Patent number: 4830680
    Abstract: This invention relates to an aqueous composition useful to deposit a corrosion inhibiting and adhesion promoting coating on a corrodible metal substrate and a method for doing same. The composition has a pH of between about 2 and about 10 and comprises water-soluble or water-dispersible metal-chelating diphenolamine compounds.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: May 16, 1989
    Assignee: Ford Motor Company
    Inventors: Walter O. Siegl, Mohinder S. Chattha