Invention Grant
- Patent Title: Porous hollow-fiber membrane and production process therefor
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Application No.: US16305757Application Date: 2017-05-30
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Publication No.: US11077407B2Publication Date: 2021-08-03
- Inventor: Kenta Iwai , Masayuki Hanakawa , Tamotsu Kitade , Masahiro Kimura , Toshiyuki Ishizaki
- 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: JPJP2016-108319 20160531
- International Application: PCT/JP2017/020161 WO 20170530
- International Announcement: WO2017/209151 WO 20171207
- Main IPC: B01D69/02
- IPC: B01D69/02 ; B01D69/08 ; B01D71/34 ; C08J9/26 ; B01D67/00 ; C02F1/44 ; C02F103/08
Abstract:
The porous hollow-fiber membrane of the present invention comprises a fluororesin polymer, and has columnar structures oriented in the longitudinal direction thereof. In the porous hollow-fiber membrane, molecular chains of the fluororesin polymer have been oriented in the longitudinal direction of the porous hollow-fiber membrane and have an average value ν of Raman orientation parameter of 1.5-4.0.
Public/Granted literature
- US20200246756A1 POROUS HOLLOW-FIBER MEMBRANE AND PRODUCTION PROCESS THEREFOR Public/Granted day:2020-08-06
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