1,2-Ethanediyl 2-methyl-2-propenoate polymer with butyl 2-methyl-2-propenoate and N-(1-methylethyl)-2-propenamide 111984-73-7 2-Propenoic acid, 2-methyl-, 1,2-ethanediyl ester, polymer with butyl 2-methyl-2-propenoate and N-(1-methylethyl)-2-propenamide Poly(N-isopropylacrylamide-co-butyl methacrylate) Poly(ipaam-co-bma)