Surfactant treatment of aromatic polyimide gas separation...

Details Surfactant treatment of aromatic polyimide gas separation... Surfactant treatment of aromatic polyimide gas separation...

C - Chemistry, Metallurgy

08

J

183/1, 18/14

C08J 5/22 (2006.01) B01D 53/22 (2006.01) B01D 67/00 (2006.01) B01D 69/08 (2006.01) B01D 71/64 (2006.01) C11D 1/66 (2006.01)

Patent

CA 2027021

AD-5777 TITLE SURFACTANT TREATMENT OF AROMATIC POLYIMIDE GAS SEPARATION MEMBRANES ABSTRACT OF THE DISCLOSURE A process for improving the permselectivity of an aromatic polyimide gas separation membrane comprising contacting said membrane with a solution of a surfactant in a solvent which swells the membrane but in which the membrane material is soluble to an extent of no more than 3% under the conditions used to contact the membrane.

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