2-Propenoic acid, 2-methyl-, butyl ester, polymer with butyl 2-propenoate, 2-ethylhexyl 2-propenoate and methyl 2-methyl-2-propenoate 68334-73-6 Methyl methacrylate, 2-ethylhexyl acrylate, butyl methacrylate, butyl acrylate polymer