42884-75-3 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with dimethyl 1,4-benzenedicarboxylate, 1,2-ethanediol and 4,4'-methylenebis(benzenamine) Ethylene glycol, trimellitic anhydride, methylenedianiline, dimethylterephthalate polymer