Method for preparing a stable aqueous composition suitable for Coating metal surfacesThe compositions thus obtained; a method of applying Protective Coatings to metal surfaces and Metal Products and protected

摘要

This application is concerned with the treatment of metal surfaces with stable solutions of hexavalent chromium, trivalent chromium, phosphoric acid, polyacrylic acid and water dispersible acrylic emulsion polymer to enhance the corrosion resistance and paint adhesion properties of the metal; the coating uniquely having generally universal utility under a wide variety of paint systems and paint types.