| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a composite semi-permeable membrane enabling unreacted components to be efficiently removed therefrom without impairing the solute removing performance, leaving little residue of the unreacted components. SOLUTION: A method of manufacturing the composite semi-permeable membrane is disclosed for manufacturing the composite semi-permeable membrane by performing interfacial polycondensation of multifunctional amine with multifunctional acid derivatives to form a separation functional layer of cross-linked aromatic polyamide on a porous support membrane, wherein the semi-permeable membrane is brought into contact with an aqueous solution containing a urea compound after the interfacial polycondensation, then subjected to cleaning with water of 70°C or more. COPYRIGHT: (C)2009,JPO&INPIT
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