POLYAMIDE ESTER OF PYROMELLITIC DIANHYDRIDE WITH 4,4-OXYDIANILINE POLYMER) pyromellitimide polyamide Poly[(5,7-dihydro-1,3,5,7-tetraoxobenzo[1,2-c:4,5-c']dipyrrole-2,6(1H,3H)-diyl)-1,4-phenyleneoxy-1,4-phenylene] PMDA-ODA Poly(1H,3H-benzodifuran-1,3,5,7-tetrone-alt-4,4'-oxybisbenzenamine] Poly(4,4'-oxydiphenylene pyromellitimide) Poly(pyromellitic dianhydride-alt-4,4'-oxydianiline) Poly(pyromellitic dianhydride-alt-bis(4-aminophenyl)ether)