Autodepositing coating composition and process and coated metal articles therefrom

Abstract

A water-based autodepositing coating composition that contains dissolved and/or dispersed anionic polyester resin comprising the condensate of (a) a polyhydric alcohol component and (b) an acid component in addition to acid, and metal ions and/or other oxidizing agents provides a coating composition that can impart an excellent corrosion resistance, adherence, and heat resistance to metal surfaces when applied to the metal surfaces and dried into place thereon, preferably with the use of heat. A rinse is usually preferably interposed between the application of the autodepositing composition and the drying operation.

Dependencies are inferred from the claim text.