Title:
非対称ガス分離膜、及びガスを分離回収する方法
Document Type and Number:
Japanese Patent JP6500893
Kind Code:
B2
Abstract:
Disclosed is an asymmetric gas separation membrane made of a soluble aromatic polyimide having a specific repeating unit, the soluble aromatic polyimide including: as a tetracarboxylic acid component, a biphenyl structure and a phenyl structure; as a diamine component, a 3,3'-diaminodiphenyl sulphone and a diaminodibenzothiophene, a diaminodibenzothiophene=5,5-dioxide, a diaminothioxanthene-10,10-dione, or a diaminothioxanthene-9,10,10-trione. Disclosed is a method for selectively separating and recovering a specific gas species from a mixed gas composed of a plurality of gas species using the asymmetric gas separation membrane, a method for selectively separating and recovering a nitrogen-rich gas from air using the asymmetric gas separation membrane, and a method for selectively separating carbon dioxide gas from a mixed gas containing carbon dioxide and methane and recovering methane-rich gas using the asymmetric gas separation membrane.
Inventors:
Makoto Nakamura
Shihomi Okahori
Toshinune Yoshinaga
Harutoshi Hoshino
Tomonori Kanoki
Shihomi Okahori
Toshinune Yoshinaga
Harutoshi Hoshino
Tomonori Kanoki
Application Number:
JP2016510447A
Publication Date:
April 17, 2019
Filing Date:
March 25, 2015
Export Citation:
Assignee:
Ube Industries,Ltd.
International Classes:
B01D71/66; B01D53/22; B01D69/08; B01D71/68; C08G73/10
Domestic Patent References:
| JP2012096195A | ||||
| JP2014024939A | ||||
| JP2006224097A | ||||
| JP2007090348A | ||||
| JP2007167852A | ||||
| JP11009974A |
Foreign References:
| WO2010038810A1 |
Attorney, Agent or Firm:
Showa International Patent Office