Synonyms: 1,3-Isobenzofurandione, 4,4'-((1-methylethylidene)bis(4,1-phenyleneoxy))bis-, polymer with 1,3-benzenediamine and 5,5'-((1-methylethylidene)bis(4,1-phenyleneoxy))bis(1,3-isobenzofurandione);61594-33-0;m-Phenylenediamine, 2,2-bis(4-(3,4-dicarboxyphenoxy)phenyl)propane dianhydride, 2,2-bis(4-(2,3-dicarboxyphenoxy)phenyl)propane dianhydride polymer