1,3-Isobenzofurandione, 5,5-((1-methylethylidene)bis(4,1-phenyleneoxy))bis-, polymer with 1,3-benzenediamine;POLYETHERIMIDE MW 30000 ABOUT 200C HIGH SOFTENING POINT RESIN;5,5'-[propane-2,2-diylbis(benzene-4,1-diyloxy)]bis(2-benzofuran-1,3-dione) - benzene-1,3-diamine (1:1);Poly(Bisphenol A-co-4-nitrophthalic anhydride-co-1,3-phenylenediamine)