2-Propenoic acid, 2-methyl-, butyl ester, polymer with ethenylbenzene, 2-hydroxyethyl 2-propenoate and 2-methylpropyl 2-methyl-2-propenoate 68368-48-9 Styrene, butyl methacrylate, isobutyl methacrylate, hydroxyethyl acrylate resin