Synonyms: Benzo[1,2-c:4,5-c']dipyrrole,deriv., polymer; 3,3'-Bis(4-aminophenoxy)biphenyldiamine-pyromelliticdianhydride copolymer, sru; 4,4'-Bis(3-acetamidophenoxy)biphenyl-pyromelliticdianhydride copolymer sru; 4,4'-Bis(3-aminophenoxy)biphenyl-pyromelliticanhydride copolymer, sru; 4,4'-Bis(3-aminophenoxy)biphenyl-pyromelliticdianhydride copolymer, SRU; 4,4'-Bis(3-aminophenoxy)biphenyl-pyromelliticdianhydride copolymer, polyimide SRU;4,4'-Bis(3-aminophenoxy)diphenyl-pyromellitic dianhydride copolymer, sru; Auram450; Aurum; Aurum 450; Aurum 450G; Aurum 500M; Aurum PD 450; Aurum PD 450C;Aurum PI-PA; Aurum PL 400; Aurum PL 450; Aurum PL 500M; New TPI; New TPI 450;PD 450; PD 450C; PL 400;Poly[(5,7-dihydro-1,3,5,7-tetraoxobenzo[1,2-c:4,5-c']dipyrrole-2,6(1H,3H)-diyl)-1,3-phenyleneoxy[1,1'-biphenyl]-4,4'-diyloxy-1,3-phenyleneiminocarbonyl(dicarboxyphenylene)carbonylimino-1,3-phenyleneoxy[1,1'-biphenyl]-4,4'-diyloxy-1,3-phenylene];Regulus NEW-TPI