Acrylic resin composition for use in high solids paints

Claim 1

An acrylic resin composition for use in high solids paints, which consists essentially of an acrylic copolymer having a number average molecular weight of 500 to 5000, prepared by subjecting the following mixture to polymerization: (A) 30 to 88 weight % of an alkyl (meth)acrylate, (B) 2 to 60 weight % of 2,4-diphenyl-4-methyl-1-pentene, (C) 10 to 40 weight % of a hydroxy bearing ethylenically unsaturated monomer selected from the group consisting of hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, diethylene glycol acrylate, diethylene glycol methacrylate, hydroxybutyl methacrylate, and a member represented by either one of the following formulae: ##STR2## wherein n in formula II is 2 or more and n in formula III is 1 to 5, and wherein said R group represents hydrogen or a methyl group, (D) 0 to 10 weight % of an ethylenic unsaturated acid selected from the group consisting of acrylic acid and methacrylic acid, and (E) 0 to 30 weight % of another copolymerizable monomer selected from the group consisting of t-butyl styrene, α-methyl styrene, vinyl toluene, dimethyl aminoethyl acrylate, dimethyl aminoethyl methacrylate, diethyl aminoethyl acrylate, diethyl aminoethyl methacrylate, vinyl pyridine, acrylamide, N-methylol acrylamide, N-butoxyl methyl acrylamide, acrylonitrile; fumaric ester, itaconic ester, maleic ester, said polymerization being carried out in the presence of one or more radical initiators.