Accession Number : ADD016420

Title :   Polyurethane Self-Priming Topcoats.

Descriptive Note : Patent, Filed 14 May 93, patented 3 May 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

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

Report Date : 03 May 1994

Pagination or Media Count : 6

Abstract : A corrosion-resistant coating which can be applied directly to a surface as a self-priming topcoat comprising a polyurethane resin binder and a combination of pigments consisting essentially of a molybdate-modified zinc phosphate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating contains up to about 35 parts by weight of a titanium dioxide pigment, up to about 3.0 parts by weight of an oil soluble dispersant agent and up to about 50 parts by weight of at least one organic solvent.

Descriptors :   *COATINGS, *POLYURETHANE RESINS, *PATENTS, ALKALINE EARTH METALS, BARIUM, BENZOIC ACIDS, BINDERS, CORROSION, DIOXIDES, DISPERSANTS, METALS, MOLYBDATES, OILS, ORGANIC SOLVENTS, PHOSPHATES, PIGMENTS, PLASTICS, SALTS, SOLVENTS, SURFACES, TITANIUM DIOXIDE, WEIGHT, ZINC, CORROSION RESISTANCE, SOLUBILITY

Subject Categories : Polymer Chemistry
      Properties of Metals and Alloys
      Coatings, Colorants and Finishes
      Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE