| 摘要 |
PROBLEM TO BE SOLVED: To provide polysulfone suitable for separation membrane materials and more excellent in low water absorptivity and water repellency than conventional polysulfone.SOLUTION: This invention relates to polysulfone represented by formula (1), to which a hexafluoroisopropanol group is introduced. In the formula, A is a single bond, a 2,2-bis(phenoxy)propane bond, or a bis-oxydiphenyl bond. |
