Composite semipermeable membrane and method for manufacturing same

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United States of America Patent

PATENT NO 11590458
APP PUB NO 20200353426A1
SERIAL NO

16965467

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Abstract

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A method for manufacturing a composite semipermeable membrane is capable of forming, on a surface of a porous support in a highly reproducible manner, a separation layer that is extremely thin and that exhibits superior separability. It provides, on a surface of a porous support, a composite semipermeable membrane that has an organic/inorganic hybrid separation layer that is extremely thin and that exhibits superior separability. A method for manufacturing a composite semipermeable membrane includes forming, on a surface of a porous support, a separation layer containing a cross-linked condensate having a siloxane bond by bringing an organic solution that contains an organic silicon compound containing three or more reactive functional groups, each of which is at least one type selected from a hydrolyzable group and a hydroxyl group, into contact with water or an aqueous solution on the porous support, and by performing interfacial polycondensation of the organic silicon compound.

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Patent Owner(s)

Patent OwnerAddress
NITTO DENKO CORPORATIONIBARAKI-SHI OSAKA 567-8680
HIROSHIMA UNIVERSITYHIGASHI-HIROSHIMA-SHI HIROSHIMA 739-8511

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirose, Masahiko Osaka, JP 60 1107
Inoue, Shinichi Osaka, JP 135 1328
Kawashima, Toshiyuki Osaka, JP 68 479
Ohshita, Joji Hiroshima, JP 4 11
Tsuru, Toshinori Hiroshima, JP 4 11
Yamamoto, Kazuki Chiba, JP 39 143

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