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Synthesis and Characterization of Organosoluble Copolyimides Based on 2,2-Bis(4-(4-aminophenoxy)-phenyl)propane, 2,2-Bis(4-(4-aminophenoxy)phenyl)-hexafluoropropane and a Pair of Commercial Aromatic Dianhydrides - Published online 20 September 2000 Organosoluble polyimides and alternating copolyimides were synthesized from BAPP or 6FBAPP and six kinds of commercial aromatic dianhydrides. Copolyimides were prepared by alternative copolycondensation from a pair of dianhydrides of soluble polyimides and insoluble polyimides in certain molar ratios (m1/m2). These copolyimides have excellent organosolubility and good tensile properties, and their thermal properties are outstanding between two corresponding polyimides./
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