Gas separation membranes and process for the preparation...

Details Gas separation membranes and process for the preparation... Gas separation membranes and process for the preparation...

C - Chemistry, Metallurgy

08

J

117/88.5

C08J 9/00 (2006.01) B01D 67/00 (2006.01) B01D 69/12 (2006.01)

Patent

CA 1127472

GAS SEPARATION MEMBRANES AND PROCESS FOR THE PREPARATION THEREOF ABSTRACT Membranes for the separation of gases comprise a thin film of a semipermeable material composited on a porous support member. The membranes as exemplified by a thin film of polymerized dimethyl silicone on a cellulose nitrate/ cellulose acetate member are prepared by passing the support member through a solution of a chlorinated hydrocarbon solvent containing a semipermeable membrane forming monomer and a cross-linking agent followed by cross-linkage of the monomer effected by treatment at an elevated temperature.

316540

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