Title:
POROUS FILM AND COMPOSITE FILM
Document Type and Number:
WIPO Patent Application WO/2024/053690
Kind Code:
A1
Abstract:
A porous film and a composite film according to the present invention each contain a crosslinked polymer in which aromatic polymers are crosslinked together. The aromatic polymers are obtained by copolymerizing at least a fluorine-based aromatic monomer that is at least one selected from the group consisting of fluorine-atom-containing aromatic diamine monomers and fluorine-atom-containing aromatic diisocyanate monomers, a non-fluorine-based aromatic monomer that is at least one selected from the group consisting of fluorine-atom-free aromatic diamine monomers and fluorine-atom-free aromatic diisocyanate monomers, and an acid anhydride monomer. The copolymerization ratio of the fluorine-based aromatic monomer and the non-fluorine-based aromatic monomer in the aromatic polymer is 25:75 to 70:30 in terms of molar ratio.
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Inventors:
YASUDA TAKAAKI (JP)
MIZUNO SHUNSUKE (JP)
OGAWA TAKAFUMI (JP)
MIZUNO SHUNSUKE (JP)
OGAWA TAKAFUMI (JP)
Application Number:
PCT/JP2023/032587
Publication Date:
March 14, 2024
Filing Date:
September 06, 2023
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D69/10; B01D69/12; B01D71/64; B01D71/66; C08G18/34; C08G73/10; C08J5/04; C08J9/28
Domestic Patent References:
| WO2021132399A1 | 2021-07-01 |
Foreign References:
| CN110028670A | 2019-07-19 | |||
| JP2017068262A | 2017-04-06 | |||
| JPS55162311A | 1980-12-17 | |||
| JP2016081835A | 2016-05-16 | |||
| JP2022098454A | 2022-07-01 |
Attorney, Agent or Firm:
EIKOH, P.C. (JP)
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