Synonyms: Poly[(1,3-dioxo-2,5-isoindolinediyl)[trifluoro-1-(trifluoromethyl)ethylidene](1,3-dioxo-5,2-isoindolinediyl)-p-phenylene[trifluoro-1-(trifluoromethyl)ethylidene]-p-phenylene](8CI); 2,2-Bis(4-aminodiphenyl)hexafluoropropane-2,2-Bis(3,4-dicarboxyphenyl)hexafluoropropanedianhydride copolymer, SRU;2,2-Bis(4-aminophenyl)hexafluoropropane-2,2-bis(3,4-dicarboxyphenyl)hexafluoropropanedianhydride copolymer, sru; 2,2-Bis(4-aminophenyl)hexafluoropropane-4,4'-hexafluoroisopropylidenebis(phthalicanhydride) copolymer, SRU; 2,2-Bis(4-aminophenyl)hexafluoropropane-6FDAcopolymer, sru;2,2'-Bis(4-aminophenyl)hexafluoropropane-2,2'-bis(3,4-dicarboxyphenyl)hexafluoropropanedianhydride copolymer, SRU; 4,4'-(Hexafluoroisopropylidene)dianiline-4,4'-(hexafluoroisopropylidene)diphthalicanhydride copolymer, SRU;4,4'-2,2-Bis(4-aminophenyl)hexafluoropropane-2,2-bis(3,4-dicarboxyphenyl)hexafluoropropanedianhydride copolymer, polyimide sru; 4,4'-Hexafluoroisopropylidenebis(phthalicanhydride)-4,4'-hexafluoroisopropy