2-Butenedioic acid (2Z)-, monoethyl ester, polymer with methoxyethene 2-Butenedioic acid (Z)-, monoethyl ester, polymer with methoxyethane 2-Butenedioic acid (Z)-, monoethyl ester, polymer with methoxyethene 25087-06-3 50935-57-4 54578-90-4 Ethyl ester of pvm/MA copolymer