Invention Grant
- Patent Title: Porous hollow fiber membrane, method for producing same, and water purification method
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Application No.: US15108610Application Date: 2014-09-18
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Publication No.: US10751671B2Publication Date: 2020-08-25
- Inventor: Daisuke Okamura , Yuki Miki , Masatoshi Hashino
- Applicant: ASAHI KASEI KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: ASAHI KASEI KABUSHIKI KAISHA
- Current Assignee: ASAHI KASEI KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@38a9e2c5
- International Application: PCT/JP2014/074737 WO 20140918
- International Announcement: WO2015/104871 WO 20150716
- Main IPC: B01D71/34
- IPC: B01D71/34 ; B01D69/02 ; B01D69/08 ; B01D69/12 ; C02F1/44 ; B01D67/00 ; B01D69/14 ; B01D71/02

Abstract:
The porous hollow fiber membrane of the present invention contains a thermoplastic resin, and includes a surface having a surface porosity of 32 to 60% and a fine pore diameter of 300 nm or less, and has a compressive strength of 0.7 MPa or more. The porous hollow fiber membrane of the present invention may include at least two layers, and in this case, the surface of one layer has a thickness of backbone of 0.3 to 20 μm and a fine pore diameter of 0.3 to 10 μm, and the surface of the other layer has a surface porosity of 32 to 60% and a fine pore diameter of 0.05 to 0.3 μm.
Public/Granted literature
- US20160325237A1 POROUS HOLLOW FIBER MEMBRANE, METHOD FOR PRODUCING SAME, AND WATER PURIFICATION METHOD Public/Granted day:2016-11-10
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