2-Propenoic acid, 2-methyl-, methyl ester, polymer with ethenylbenzene, 2-propenenitrile and 2-propenoic acid 38684-13-8 Methyl methacrylate, styrene, acrylic acid, acrylonitrile polymer Methyl methacrylate, styrene, acrylonitrile, acrylic acid polymer