AROMATIC POLYSULFONE RESIN SOLUTION COMPOSITION, FILM BY USING THE COMPOSITION AND METHOD FOR PREPARING THE COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain an aromatic polysulfone resin solution composition having excellent stability of the solution which does not cause gelation or formation of precipitates.;SOLUTION: The aromatic polysulfone resin solution composition contains (A) the aromatic polysulfone resin, (B) a cyclic ketone, (C) at least one solvent selected from the group consisting of hydrocarbons, ethers and acetals, or (D) alcohols, and the aromatic polysulfone resin solution composition is characterized in that the concentration of (A) in the composition is 10 wt.% to 70 wt.%, and in case of using (C), the weight ratio of (B) to (C) ((B)/(C)) is 1.5(B)/(C)9, and in case of using (D), the weight ratio of (B) to (D) ((B)/(D)) is 4(B)/(D)19.;COPYRIGHT: (C)2002,JPO