1,2-Benzenedicarboxylic acid, polymer with (2Z)-2-butenedioic acid and 1,2-ethanediol 1,2-Benzenedicarboxylic acid, polymer with (Z)-2-butenedioic acid and 1,2-ethanediol 1,2-Ethanediol, polymer with 1,2-benzenedicarboxylic acid and (2Z)-2-butenedioic acid 1,2-Ethanediol, polymer with 1,2-benzenedicarboxylic acid and (Z)-2-butenedioic acid 2-Butenedioic acid (2Z)-, polymer with 1,2-benzenedicarboxylic acid and 1,2-ethanediol 2-Butenedioic acid (Z)-, polymer with 1,2-benzenedicarboxylic acid and 1,2-ethanediol Ethylene glycol-maleic acid-phthalic acid copolymer Ethylene glycol-maleic acid-phthalic acid polymer Ethylene glycol, polyester with maleic acid and phthalic acid Maleic acid, polyester with ethylene glycol and phthalic acid P 4 P 4 (polymer) Phthalic acid-maleic acid-ethylene glycol polymer Phthalic acid, polyester with ethylene glycol and maleic acid Poly(ethylene glycol maleate phthalate) Poly(ethylene maleate-phthalate)