Title:
HOLLOW FIBER POROUS MEMBRANE
Document Type and Number:
Japanese Patent JP2007245107
Kind Code:
A
Abstract:
To provide a hollow fiber porous membrane provided with a mechanical strength and a water-permeable performance at a high level at a good balance.
In the hollow filament porous film, there are no skin layer and no void layer and at least a part from an outer surface to an inner surface is a sponge-like semi-permeable membrane layer. In the hollow fiber porous membrane, an average pore diameter (do) of the outer surface of the semi-permeable membrane layer and an average pore diameter (di) of the inner surface of the semi-permeable membrane layer satisfy a relationship of do=0.05-5 μm and do≤di.
COPYRIGHT: (C)2007,JPO&INPIT
Inventors:
HAMADA TOYOZO
Application Number:
JP2006075940A
Publication Date:
September 27, 2007
Filing Date:
March 20, 2006
Export Citation:
Assignee:
DAICEL CHEM
International Classes:
B01D69/08; B01D69/12; B01D71/16; B01D71/68; D01F2/28; D01F6/76
Domestic Patent References:
| JP2003001074A | 2003-01-07 | |||
| JPS60241904A | 1985-11-30 | |||
| JPS62117812A | 1987-05-29 | |||
| JPH02251233A | 1990-10-09 | |||
| JP2004525755A | 2004-08-26 | |||
| JP2003225542A | 2003-08-12 | |||
| JP2003311133A | 2003-11-05 | |||
| JP2004538143A | 2004-12-24 | |||
| JP2002306937A | 2002-10-22 |
Attorney, Agent or Firm:
Satoshi Furuya
Takahiko Mizobe
Shinji Mochida
Yoshitsune Kazumasa
Takahiko Mizobe
Shinji Mochida
Yoshitsune Kazumasa