Polyimide membrane having improved flux

Details Polyimide membrane having improved flux Polyimide membrane having improved flux

B - Operations, Transporting

01

D

18/27

B01D 71/64 (2006.01) B01D 53/22 (2006.01) C08G 73/10 (2006.01)

Patent

CA 2010463

PATENT 173PUS04045 ABSTRACT The present invention is a class of polyimide membranes wherein the diamine portion of the polymer structure is an alkylated bisaniline. The bridging group of the diamine possesses restricted, rotatable rigid, or low Van Der Waal energy substituents which are orthogonal to the polymer backbone. These polyamide membranes exhibit enhanced gas flux and are useful in various gas separation applications,

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