Aromatic polyimide separation membrane

Details Aromatic polyimide separation membrane Aromatic polyimide separation membrane

C - Chemistry, Metallurgy

08

J

18/32

C08J 9/36 (2006.01) B01D 61/00 (2006.01) B01D 67/00 (2006.01) B01D 71/64 (2006.01) C08G 73/10 (2006.01) C08J 7/12 (2006.01)

Patent

CA 2020398

- 41 - ABSTRACT OF THE DISCLOSURE: An aromatic polyimide separation membrane prepared by subjecting an aromatic polyimide membrane to fluorine treatment with an active fluorine is described. The aromatic polyimide separation membrane according to the present invention has an extremely high selectivity and gas permeability, and therefore, is useful as a membrane for separation of gas mixtures or liquid mixtures.

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