2-Propenoic acid, 2-methyl-, butyl ester, polymer with methyl 2-methyl-2-propenoate and 2-propenoic acid 26898-31-7 438552-03-5 Acrylic acid, methyl methacrylate, butyl methacrylate polymer Methyl methacrylate, butyl methacrylate, acrylic acid resin