Nonstaining coating compositions, method of finish coating, and coated articles

摘要

A nonstaining coating composition which comprises as essential components (A) a specific aliphatic sulfonic acid compound or amine salt thereof, (B) a compound having per molecule at least one functional group selected among carboxyl, a carboxylic anhydride group, and a carboxyl group blocked with an alkyl vinyl ether, (C) a specific organosilicate and/or a condensate thereof, and (D) a resin having epoxy groups and/or alkoxysilyl groups in the molecule; and a method or finish coating. They give a cured coating film which has nonstaining properties based on a high degree of hydrophilicity from immediately alter the formation thereof and has satisfactory long-term weatherability, water resistance, and chemical resistance The film can impart an excellent finish appearance to the article