Synonyms: Methacrylicacid, polymer with methyl methacrylate, sodium salt (8CI); 2-Propenoic acid,2-methyl-, methyl ester, polymer with 2-methyl-2-propenoic acid, sodium salt(9CI); Methacrylic acid methyl ester, polymer with methacrylic acid, sodiumsalt (8CI); Eudispert sodium; Eudispert sodium salt; Lakris 20B; MMK;Methacrylic acid-methyl methacrylate polymer sodium salt; Methacrylicacid-methylmethacrylate copolymer sodium salt; Methyl methacrylate-methacrylicacid copolymer sodium salt