The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2023
Filed:
Jan. 23, 2019
Nitto Denko Corporation, Osaka, JP;
Hiroshima University, Hiroshima, JP;
Toshiyuki Kawashima, Osaka, JP;
Shinichi Inoue, Osaka, JP;
Masahiko Hirose, Osaka, JP;
Joji Ohshita, Hiroshima, JP;
Toshinori Tsuru, Hiroshima, JP;
Kazuki Yamamoto, Chiba, JP;
NITTO DENKO CORPORATION, Osaka, JP;
HIROSHIMA UNIVERSITY, Hiroshima, JP;
Abstract
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.