Title:
SEPARATION MEMBRANE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/101000
Kind Code:
A1
Abstract:
The present invention provides a novel separation membrane that is suitable for separation of an acidic gas from a gas mixture that contains the acidic gas. A separation membrane 10 according to the present invention is provided with: a separation function layer 1 that contains a polyimide P1; and a porous support 2 that is in direct contact with the separation function layer 1. The polyimide P1 comprises a constituent unit A1 which is derived from a tetracarboxylic acid dianhydride that has an acid anhydride structure having a six-membered ring. With respect to the separation coefficient α of the separation membrane 10, the separation coefficient α being identified by test 1, the ratio R of the value obtained by multiplying the standard deviation σ1 by 3 to the average Av1 is 70% or less.
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Inventors:
HINO RYOYA (JP)
TANI KENSUKE (JP)
SAYAMA SHUNSUKE (JP)
MIYAKE MASASHI (JP)
KONDO SHIN (JP)
TANI KENSUKE (JP)
SAYAMA SHUNSUKE (JP)
MIYAKE MASASHI (JP)
KONDO SHIN (JP)
Application Number:
PCT/JP2023/033990
Publication Date:
May 16, 2024
Filing Date:
September 19, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B01D71/64; B01D69/10; B01D69/12
Domestic Patent References:
| WO2014175011A1 | 2014-10-30 |
Foreign References:
| JP2003236352A | 2003-08-26 | |||
| CN108043232A | 2018-05-18 |
Attorney, Agent or Firm:
KAMADA Koichi et al. (JP)
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