B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/1, 18/32
B01D 67/00 (2006.01) B01D 53/22 (2006.01) B01D 69/08 (2006.01) B01D 71/26 (2006.01) C08J 7/12 (2006.01)
Patent
CA 1326116
ABSTRACT The present invention provides a surface modified polymeric gas separation membrane having improved selectivity, particularly for oxygen/nitrogen gas mixtures, prepared by forming a membrane of a polymer having the structural formula Image wherein R and R" can be the same or different linear, branched or cyclic alkyl group having one to twelve carbon atoms, or R can be H, with the proviso that both R and R" cannot be methyl, and n is at least 100, and treating the surface of the membrane with a fluoro-oxidizing agent at conditions sufficient to fluoro-oxidize the membrane surface.
607356
Anand Madhu
Campbell Keith Douglas
Costello Christine Ann
Puri Pushpinder Singh
Air Products And Chemicals Inc.
Mcfadden Fincham
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