Polyurethane self-priming topcoats

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 an alkaline earth metal metaborate, zinc salts of benzoic acids, and an alkaline earth metal phosphate suc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HEGEDUS, CHARLES R, ENG, ANTHONY T, HIRST, DONALD J
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung: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 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.