Title:
多孔質膜
Document Type and Number:
Japanese Patent JP6385444
Kind Code:
B2
Abstract:
The object of the present invention is to provide a porous membrane by which a useful component can be recovered while suppressing the clogging during filtration of a protein solution and from which only a small amount of an eluate is eluted even when an aqueous solution is filtered. The present invention provides a porous membrane containing a hydrophobic polymer and a water-insoluble hydrophilic polymer, the porous membrane having a dense layer in the downstream portion of filtration in the membrane, having a gradient asymmetric structure in which the average pore diameter of fine pores increases from the downstream portion of filtration toward the upstream portion of filtration, and having a gradient index of the average pore diameter from the dense layer to the coarse layer of 0.5 to 12.0.
More Like This:
Inventors:
Kayama Yuzo
Masamuro Komuro
Tetsuya Hamasaki
Masamuro Komuro
Tetsuya Hamasaki
Application Number:
JP2016545559A
Publication Date:
September 05, 2018
Filing Date:
August 25, 2015
Export Citation:
Assignee:
Asahi Kasei Medical Co., Ltd.
International Classes:
A61K35/16; B01D69/02; B01D69/08; B01D71/08; B01D71/10; B01D71/12; B01D71/16; B01D71/26; B01D71/34; B01D71/42; B01D71/44; B01D71/48; B01D71/52; B01D71/56; B01D71/64; B01D71/68; C08J9/26; C08J9/42
Domestic Patent References:
| JP2014097465A | ||||
| JP2012527341A | ||||
| JP2010059395A | ||||
| JP6165926A |
Foreign References:
| WO2011111679A1 | ||||
| WO2001014047A1 | ||||
| WO2008156124A1 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito