Semipermeable membranes bases on specified...

Details Semipermeable membranes bases on specified... Semipermeable membranes bases on specified...

C - Chemistry, Metallurgy

08

J

183/1, 18/12

C08J 9/00 (2006.01) B01D 53/22 (2006.01) B01D 71/48 (2006.01) C08G 63/193 (2006.01) C08G 63/682 (2006.01)

Patent

CA 2006591

- 36 - SEMIPERMEABLE MEMBRANES BASED ON SPECIFIED 4,4'-(1H-ALKYLIDENE)BIS[2,3,6-TRIALKYLPHENOL] TYPE POLYESTERS Abstract of the Invention Permeable membranes comprised predominantly of specifically defined polyester of 4,9'-(1H-alkylidene) bis[2,3,6-trialkylphenol] and aromatic dicarboxylic acids. The invention also pertains to the novel permeation processes for recovery of an oxygen/nitrogen or carbon dioxide/methane or helium/methane component from a mixture of said component with other components in the mixture. D-16101-3

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