4,4'-(perfluoropropane-2,2-diyl)dianiline; 4,4'-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[benzenamine]; 2,2-Bis(4-aminophenyl)-1,1,1,3,3,3-hexafluoropropane; 4,4'-[Trifluoro-1-(trifluoromethyl)ethylidene]dianiline;4,4'-(Hexafluoroisopropylidene)dianiline; BIS-A-AF; Hexafluoroisopropylidene-4,4'-dianiline