Copolyimide gas separation membranes derived from...

Details Copolyimide gas separation membranes derived from... Copolyimide gas separation membranes derived from...

B - Operations, Transporting

01

D

183/1, 18/27

B01D 71/56 (2006.01) B01D 53/22 (2006.01) B01D 71/64 (2006.01) C08G 73/10 (2006.01)

Patent

CA 2015423

AD-5744 TITLE COPOLYIMIDE GAS SEPARATION MEMBRANES DERIVED FROM SUBSTITUTED PHENYLENE DIAMINES AND SUBSTITUTED METHYLENE DIANILINES ABSTRACT OF THE DISCLOSURE An aromatic copolyimide gas separation membrane and the process of using it to separate one or more gases from a mixture of gases are disclosed. The aromatic copolyimide is the condensation product of an aromatic tetracarboxylic dianhydride with a phenylene diamine and a methylene dianiline both of which diamine are substituted with alkyl groups on all positions ortho to the amino groups.

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