1,3-Isobenzofurandione, 5,5′-[(1-methylethylidene)bis(4,1-phenyleneoxy)]bis-, polymer with 4,4′-methylenebis[benzenamine] 2,2-Bis[3,4-dicarboxyphenoxy)phenyl]propane dianhydride-4,4′-methylenedianiline copolymer 2,2-Bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride-4,4′-diaminodiphenylmethane copolymer 2,2-Bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride-4,4′-methylenedianiline polymer 2,2-Bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride-methylenedianiline copolymer 4,4′-Bisphenol A dianhydride-diaminodiphenyl methane copolymer 4,4′-Diaminodiphenylmethane-4,4′-[isopropylidenebis(p-phenyleneoxy)]diphthalic anhydride copolymer 4,4′-Diaminodiphenylmethane-isopropylidenebis[4-(1,3-dioxobenzofuran-5-yloxy)benzene] copolymer Benzenamine, 4,4′-methylenebis-, polymer with 5,5′-[(1-methylethylidene)bis(4,1-phenyleneoxy)]bis[1,3-isobenzofurandione]