2-Propenoic acid, 2-methyl-, 2-(dimethylamino)ethyl ester, polymer with butyl 2-propenoate, ethenylbenzene and 2-hydroxyethyl 2-propenoate 67906-86-9 Butyl acrylate, styrene, hydroxyethyl acrylate, dimethylaminoethyl methacrylate polymer