Patent ID: 7034080

Claim:
A coating composition comprising at least one pigment dispersed in an acrylic polymer, wherein the acrylic polymer is prepared by first polymerizing a mixture of ethylenically unsaturated monomers comprising: (a) at least about 15% by weight unsaturated meta-isopropenyl-α, α-dimethylbenzyl isocyanate; (b) at least one further aromatic polymerizable monomer, in an amount so that monomers (a) and (b) combined are at least about 50 percent by weight of the mixture of ethylenically unsaturated monomers; and (c) at least one alkyl (meth)acrylate to form a polymer, and secondly, reacting the isocyanate groups of the polymer with (d) a hydroxyalkyl acid in which the hydroxyl and acid groups are separated by at least four atoms or with a diol having both the primary hydroxyl group and a secondary hydroxyl group and then with a cyclic anhydride and (e) hydroxyethylene ethyl urea.