Semipermeable thin-film membranes comprising siloxane,...

Details Semipermeable thin-film membranes comprising siloxane,... Semipermeable thin-film membranes comprising siloxane,...

B - Operations, Transporting

01

D

183/1, 18/12, 11

B01D 53/22 (2006.01)

Patent

CA 1312425

Abstract of the Disclosure Novel semiperimeable membranes and thin film composite (TFC) gas separation membranes useful in the separation of oxygen, nitrogen, hydrogen, water vapor, methahe, carbon dioxide, hydrogen sulfide, lower hydro- carbons, and other gases are disclosed. The novel semipermeable membranes comprise the polycondensation reaction product of two complementary polyfunctional compounds, each having at least two functional groups that are mutually reactive in a condensation polymeriza- tion reaction, and at least one of which is selected from siloxanes, alkoxsilyls and aryloxysilyls. The TFC membrane comprises a microporous polymeric support, the surface of which has the novel semipermeable film formed thereon, preferably by interfacial polymerization.

542574

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