Process for making high solids acrylic dispersion lacquer

摘要

A process for making high solids acrylic dispersion lacquer coating composition having an acrylic polymer binder content of about 25-45% by weight in a nonaqueous medium; wherein the acrylic polymer is a blend of (1) Polymer A of methyl methacrylate and a polymerized monomer of allyl methacrylate, alkyl amino alkyl methacrylate or mixtures thereof; (2) Copolymer B of methyl methacrylate and an alkyl acrylate having 6-12 carbon atoms in the alkyl group; and (3) A graft copolymer of Polymer A which forms a backbone of the graft copolymer and Copolymer B attached to the backbone which forms side chains of the graft copolymer; and wherein the nonaqueous medium is a blend of (a) an aliphatic solvent which at 25 DEG C. is a nonsolvent for Polymer A and a solvent for Copolymer B; and (b) a coalescing solvent for the binder; the composition is useful as an exterior finish for automobiles and trucks.