Title:
Porous hollow fiber membrane, its manufacturing method, and water purification method
Document Type and Number:
Japanese Patent JP6368324
Kind Code:
B2
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.
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Inventors:
Daisuke Okamura
Miki Yuki
Masatoshi Hashino
Miki Yuki
Masatoshi Hashino
Application Number:
JP2015556708A
Publication Date:
August 01, 2018
Filing Date:
September 18, 2014
Export Citation:
Assignee:
ASAHI KASEI KABUSHIKI KAISHA
International Classes:
B01D69/02; B01D69/00; B01D69/08; B01D71/34; C02F1/44
Domestic Patent References:
| JP2012040461A | ||||
| JP2010227932A | ||||
| JP2009219979A | ||||
| JP2007185562A |
Foreign References:
| WO1997022405A1 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshinori Shimizu
Hiroyuki Nishimoto
Yoshinori Shimizu
Hiroyuki Nishimoto
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