Patent ID: 7183355

Claim:
A multi-component composite coating composition comprising a base coat deposited from a pigmented film-forming composition and a transparent topcoat composition applied over the base coat in which the transparent topcoat is deposited from a clear film-forming composition which is substantially free of organic solvent, said topcoat film-forming composition comprising a curable, aqueous film-forming composition comprising: (a) a copolymer serving as a polymeric binder containing two or more reactive functional groups, said copolymer comprising at least 30 mol % of residues having the following alternating structural units: -[DM-AM]- wherein DM represents a residue from a donor monomer, and AM represents a residue from an acceptor monomer, at least 15 mol % of the copolymer comprising a donor monomer having the following structure (I): wherein R 1 is linear or branched C 1 to C 4 alkyl, R 2 is selected from the group consisting of methyl, linear, cyclic or branched C 1 to C 20 alkyl, alkenyl, aryl, alkaryl and aralkyl; and (b) a curing agent having at least two functional groups which are reactive with the reactive functional groups of (a).