2-Propenoic acid, 2-methyl-, polymer with butyl 2-methyl-2-propenoate, butyl 2-propenoate and ethenylbenzene 58048-89-8 Butyl acrylate, butyl methacrylate, methacrylic acid and styrene copolymer Styrene, methacrylic acid, butyl methacrylate, butyl acrylate polymer