Synonyms: 2-Propenoic acid, 2-methyl-, 2-aminoethyl ester, hydrochloride, polymer with butyl 2-propenoate, ethenylbenzene and methyl 2-methyl-2-propenoate;methacrylic acid esters/ butyl acrylate/ styrene copolymer;2-Propenoic acid, 2-methyl-, 2-aminoethyl ester, hydrochloride, polymer with butyl 2-propenoate, ethenylbenzene and methyl 2-methyl-2-propenoate (SN)