2-Hydroxyethyl methacrylate, methyl methacrylate, isobutyl methacrylate polymer 2-Propenoic acid, 2-methyl-, 2-hydroxyethyl ester, polymer with methyl 2-methyl-2-propenoate and 2-methylpropyl 2-methyl-2-propenoate 52002-56-9