Patent ID: 6599965
Filing Date: 2003-07-29
Classification: B05D,C08G,C08L,C09D

Abstract:
A sandable and recoatable two-component coating composition for preventing corrosion of a metallic substrate, the composition comprisinga film-forming component comprising a polymer component (I) comprising a film-forming polymer having functional groups selected from the group consisting of active hydrogen containing groups, epoxide groups, and mixtures thereof, and a hardener component (II) comprising a crosslinking agent having functional groups selected from the group consisting of isocyanate groups and amine groups, and a corrosion protection component consisting essentially of aluminum selected from the group consisting of nonleafing aluminum pigments and which is present in an amount of from 0.011 to 0.051 weight percent, based on the total nonvolatile film-forming component of the coating composition, wherein a cured film of the coating composition applied to a metallic substrate has a pass rating after 480 hours in salt spray per ASTM B117, and is both sandable and recoatable.