| 摘要 |
PURPOSE:To produce hydrophilic semipermeable membrane having water contact angle of 65 deg. or smaller, by dissolving aromatic polyethersulfone constituted of a specific repeating structural unit in a polar organic solvent, to which is added a soln. of an electrolyte, by shaping the soln. into film, and by desolvation of the film under limitted conditions. |
