Synonyms: 2-Butenoic acid,polymer with ethenyl acetate,ammonium salt;2-Butenoic acid, polymer with ethenyl acetate, ammonium salt (9CI);Crotonic acid, polymer with vinyl acetate, ammonium salt (8CI);Acetic acid ethenyl ester, polymer with 2-butenoic acid, ammonium salt (9CI);Crotonic acid-vinyl acetate copolymer ammonium salt;Vinyl acetate-crotonic acid copolymer ammonium salt;Crotonic acid-vinyl acetate polymer ammonium salt;