Synonyms: 2-Propenoic acid, 2-methyl-, oxiranylmethyl ester, polymer with ethenylbenzene;2-Propenoic acid,2-methyl-,oxiranylmethyl ester,polymer with ethenylbenzene;Copolymer of 2,3-epoxypropylmethacrylate-styrene;Copolymer of styrene·2,3-epoxypropyl methacrylate (a number-average molecular weight is not less than 45,000 and the contents of component