Polyurethane Self-Priming Topcoats
Patent, filed 29 Sep 1992, patented 1 Mar 1994
NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD
Pagination or Media Count:
A corrosion-resistant coating which can be applied directly to a surface as self-priming topcoat comprising a polyurethane resin binder and a combination of pigments consisting essentially of an alkaline earth metal metaborate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating contains from 5-40 parts by weight of a titanium dioxide pigment, up to about 3.0 parts by weight of an oil soluble dispersant and up to about 50 parts by weight of at least one organic solvent.
- Coatings, Colorants and Finishes