2-Propenoic acid, 2-methyl-, polymer with butyl 2-propenoate, methyl 2-methyl-2-propenoate and 1,2-propanediol mono(2-methyl-2-propenoate) 63197-38-6 Butyl acrylate, hydroxypropyl methacrylate, methacrylic acid, methyl methacrylate polymer