| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a composite semipermeable membrane having both high water permeability and high solvent removability, without requiring addition of a new chemical. SOLUTION: Provided is a method wherein a polyfunctional amine aqueous solution and an organic solvent solution containing a polyfunctional acid halide are brought into contact with each other on a fine porous support membrane to be subjected to interfacial polycondensation, and wherein the concentration of the polyfunctional amine increases from the surface toward the inside of the microporous support membrane. COPYRIGHT: (C)2010,JPO&INPIT
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