Invention Grant
- Patent Title: Composite semipermeable membrane and method for producing composite semipermeable membrane
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Application No.: US16063172Application Date: 2016-12-16
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Publication No.: US11090613B2Publication Date: 2021-08-17
- Inventor: Hiroaki Tanaka , Hiroki Minehara , Koji Nakatsuji , Masahiro Kimura
- Applicant: TORAY INDUSTRIES, INC.
- Applicant Address: JP Tokyo
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2015-247002 20151218
- International Application: PCT/JP2016/087628 WO 20161216
- International Announcement: WO2017/104824 WO 20170622
- Main IPC: B01D69/02
- IPC: B01D69/02 ; C02F1/44 ; B01D69/10 ; B01D67/00 ; C02F103/08 ; B01D69/12 ; B01D71/56
Abstract:
This composite semipermeable membrane is provided with: a porous supporting membrane that comprises a base and a porous supporting layer; and a separating function layer that is provided on the porous supporting layer. With respect to this composite semipermeable membrane, the standard deviation of pore radius of the separating function layer as determined by positron annihilation lifetime measurement is 0.025 nm or less.
Public/Granted literature
- US20180369758A1 COMPOSITE SEMIPERMEABLE MEMBRANE AND METHOD FOR PRODUCING COMPOSITE SEMIPERMEABLE MEMBRANE Public/Granted day:2018-12-27
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