Composite or asymmetric fluorine-containing polyimide...

Details Composite or asymmetric fluorine-containing polyimide... Composite or asymmetric fluorine-containing polyimide...

C - Chemistry, Metallurgy

08

J

C08J 9/34 (2006.01) B01D 53/22 (2006.01) B01D 67/00 (2006.01) B01D 71/64 (2006.01) C08L 79/08 (2006.01)

Patent

CA 2063228

ABSTRACT OF THE DISCLOSURE A composite or asymmetric membrane for separating and concentrating a particular component from a mixture of gases. The asymmetric membrane is of a fluorine-containing aromatic polyimide resin of the 6FDA type. The composite membrane has a thin film of an elastomeric polymer formed on a supporting film of a fluorine-containing aromatic Polyi- mide resin of the 6FDA type.

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