Title:
POROUS MEMBRANE, ION EXCHANGE MEMBRANE, WATER ELECTROLYSIS DEVICE, AND PRODUCTION METHOD FOR POROUS MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2023/140330
Kind Code:
A1
Abstract:
Provided are: a porous membrane that has excellent durability, and is suitable as a support for an ion exchange resin; and a porous membrane and an anion exchange membrane that are capable of inhibiting a change in hydrogen gas permeability over time during repetitive use thereof in water electrolysis. The porous membrane contains a polyolefin resin, and has a porosity of 20-80% and a BET specific surface area of at least 40 m2/g as calculated by a nitrogen adsorption method. This ion exchange membrane is obtained by filling pores of the porous membrane with an ion exchange resin.
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Inventors:
MISHIMA YU (JP)
ISOMURA TAKENORI (JP)
SUGATA MASAMI (JP)
ISOMURA TAKENORI (JP)
SUGATA MASAMI (JP)
Application Number:
PCT/JP2023/001560
Publication Date:
July 27, 2023
Filing Date:
January 19, 2023
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
International Classes:
C08J5/04; B01D69/00; B01D69/10; B01D71/26; C02F1/461; C08J9/42; C25B9/00; C25B13/04
Domestic Patent References:
| WO2007023918A1 | 2007-03-01 |
Foreign References:
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Attorney, Agent or Firm:
YAMAMOTO, Noriaki et al. (JP)
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