Title:
PREPARATION OF COMPOSITE SEMIPERMEABLE MEMBRANE
Document Type and Number:
Japanese Patent JPH08972
Kind Code:
A
Abstract:
PURPOSE: To provide a method for preparing an excellent composite semipermeable membrane with high permeability, high selective separability and oxidant resistance, especially high permeability.
CONSTITUTION: In preparing a composite reverse osmosis membrane with an ultrathin membrane consisting of a crosslinked arom. polyamide obtd. by interfacial polymn. reaction using a porous substrate membrane and a water-immiscible soln., an excess water-immiscible soln. on the surface of the ultrathin membrane is removed under a condition where the amt. of evaporation is at most 200g/m2.
Inventors:
TOUCHI TOSHIO
INOUE TETSUO
NAGAOKA SHIGEYOSHI
INOUE TETSUO
NAGAOKA SHIGEYOSHI
Application Number:
JP14012094A
Publication Date:
January 09, 1996
Filing Date:
June 22, 1994
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
B01D71/56; B01D71/82; (IPC1-7): B01D71/56; B01D71/82
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