Accession Number : ADD015477

Title :   Polyurethane Self-Priming Topcoats.

Descriptive Note : Patent, Filed 13 May 91, patented 23 Jun 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Hegedus, Charles R ; Hirst, Donald J ; Eng, Anthony T

Report Date : 23 Jun 1992

Pagination or Media Count : 6

Abstract : A corrosion-resistant coating which can be applied directly to a surface as a self-priming topcoat comprising from about 10 to 90 percent by weight of a polymeric polyurethane binder and 5 to 65 percent by weight of a combination of metal salts or pigments which consist essentially of calcium borosilicate, zinc salts of benzoic acids. and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition. the coating may contain up to about 30 percent by weight of a titanium dioxide pigment and up to about 75 percent by weight of at least one organic solvent.

Descriptors :   *COATINGS, *CORROSION, *PATENTS, ACIDS, ADDITION, ALKALINE EARTH METALS, BARIUM, BENZOIC ACIDS, BINDERS, CALCIUM, DIOXIDES, METALS, ORGANIC SOLVENTS, PHOSPHATES, PIGMENTS, SALTS, SOLVENTS, SURFACES, TITANIUM, TITANIUM DIOXIDE, WEIGHT, ZINC, POLYMERS

Subject Categories : Polymer Chemistry
      Coatings, Colorants and Finishes
      Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE