英文名称:PHTHALIC ANHYDRIDE) POLYMER WITH 4,4''-OXYBIS(BENZENAMINE) AND 4,4''-SULFONYLBIS(BENZENAMINE)); Hexafluoroisopropylidene-2,2-Bis(Phthalic Anhydride) Pol.; Phthalic Anhydride) Polymer With 4,4''-Oxybis(Benzenamine) And 4,4''-Sulfonylbis(Benzenamine))