Title:
AIR SEPARATION MEMBRANE HAVING ESTER SUBSTITUENT
Document Type and Number:
Japanese Patent JP3172746
Kind Code:
B2
Abstract:
PURPOSE: To obtain a gas separation membrane having excellent carbon dioxide separation capacity by using a polymeric material having a bulky structural part as a repeating unit and having an ester group as a substituent of the repeating unit and respectively specifying the structure, substituent and content of the repeating unit.
CONSTITUTION: A gas separation membrane is obtained by using a polymeric material wherein 5mol% or more of a repeating unit has a bulky structural part represented by formula (wherein R1, R2, R3 and R4 are a hydrogen atom, an alkyl group or a halogen atom and may be same or mutually different and R5 and R6 are a hydrogen atom, a sulfonic acid group, a carboxyl group, a 4 or less C alkyl carboxylate group or a 4 or less alkyl sulfonate group and may be same or mutually different and 10mol% or more of the repeating unit is a 4 or less C alkyl carboxylate group or alkyl sulfonate group as a substituent).
Inventors:
Shingo Kazama
Kenji Haratani
Kenji Haratani
Application Number:
JP14306195A
Publication Date:
June 04, 2001
Filing Date:
June 09, 1995
Export Citation:
Assignee:
Director, AIST, Ministry of Economy, Trade and Industry
Institute for Global Environmental Technology
Nippon Steel Corporation
Institute for Global Environmental Technology
Nippon Steel Corporation
International Classes:
B01D71/64; B01D71/68; B01D71/82; (IPC1-7): B01D71/64
Domestic Patent References:
| JP691145A | ||||
| JP5317668A | ||||
| JP824603A | ||||
| JP824602A |
Attorney, Agent or Firm:
Katsuo Naruse (1 person outside)
Katsuo Naruse (1 person outside)
Katsuo Naruse (1 person outside)