Title:
多孔質中空糸膜
Document Type and Number:
Japanese Patent JP7314797
Kind Code:
B2
Abstract:
Disclosed is a porous hollow fiber membrane containing a polysulfone-based polymer as a main component, which has an asymmetric structure in which the inner surface side is dense and the outer surface side is coarse, wherein an average of a minor axis diameter of pores of an inner surface is 20 nm or more and 40 nm or less, an open porosity of the inner surface is 10% or more and 30% or less, and a polymer including a monocarboxylic acid vinyl ester unit is supported on at least one of the outer surface and the inner surface. The present invention provides a hollow fiber membrane which has excellent removing performance of substances to be separated such as viruses, and can be used as a separation membrane having high permeability even in a treatment under low pressure.
Inventors:
Akihiro Hayashi
Kaoru Akaike
Shun Ujo
Yoshiyuki Ueno
Kaoru Akaike
Shun Ujo
Yoshiyuki Ueno
Application Number:
JP2019528784A
Publication Date:
July 26, 2023
Filing Date:
May 24, 2019
Export Citation:
Assignee:
Toray Industries, Inc.
International Classes:
B01D71/68; A61M1/18; B01D61/58; B01D63/02; B01D69/00; B01D69/08; B01D71/14; C08F218/04; C08J7/04; C08J9/28; D01F6/76
Domestic Patent References:
| JP2014073487A | ||||
| JP2010053108A |
Foreign References:
| WO2009123088A1 | ||||
| WO2016158388A1 | ||||
| WO2018025772A1 | ||||
| WO2018062451A1 |
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