Title:
GAS SEPARATION MEMBRANE, GAS SEPARATION DEVICE, METHOD FOR PRODUCING GAS SEPARATION MEMBRANE, AND ANALYSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2024/090457
Kind Code:
A1
Abstract:
As a gas separation membrane which suppresses leaks and exhibits excellent carbon dioxide permeability under low temperature conditions, the present invention provides a gas separation membrane (10) having a separation function layer (15) which contains a polymer having a poly(ethylene oxide) structure and satisfies condition [x] and/or condition [y]. When a solution obtained by chemically decomposing the separation function layer using acetic anhydride and p-toluenesulfonic acid monohydrate is measured using a gas chromatography mass spectrometry method, if the peak area of a compound represented by formula (a) is denoted by Pa and the peak area of a compound represented by formula (b) is denoted by Pb in an obtained chromatogram, the relationship of formula (I) is satisfied. Formula (I): (Pb/Pa)×100 ≥ 0.03. The polymer contains crosslinked poly(ethylene oxide), and the melting point of the separation function layer is 60°C or lower.
Inventors:
YOKOFUJITA TOSHIYUKI (JP)
KAWARA KENSUKE (JP)
IITSUKA KOHEI (JP)
ADACHI TATSUHIKO (JP)
KATAKURA SHIRO (JP)
KAWARA KENSUKE (JP)
IITSUKA KOHEI (JP)
ADACHI TATSUHIKO (JP)
KATAKURA SHIRO (JP)
Application Number:
PCT/JP2023/038436
Publication Date:
May 02, 2024
Filing Date:
October 25, 2023
Export Citation:
Assignee:
SUMITOMO CHEMICAL COMPANY LTD (JP)
International Classes:
B01D71/52; B01D53/22; B01D67/00; B01D69/02; B01D69/10; B01D69/12; G01N30/72; G01N30/88
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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