2-Propenoic acid, 2-methyl-, polymer with butyl 2-propenoate, ethenylbenzene, methyl 2-methyl-2-propenoate and 1,2-propanediol mono-2-propenoate 67939-50-8 Butyl acrylate, methacrylic acid, hydroxypropyl acrylate, styrene, methyl methacrylate polymer