FIELD: organic chemistry. SUBSTANCE: a process for recovering olefins from gaseous stock streams comprises stages of passing a gaseous stock stream above one side of a liquid membrane with facilitated transfer and taking away olefins from the other side of the membrane. The liquid membrane with facilitated transfer for the recovery of olefins from a gaseous stock stream comprises a construction member in the form of a polymeric microporous substrate and a liquid barrier which comprises an aqueous solution containing a carrier in the form of a metal salt capable of coordinated bond of olefin gases, and ethylene or propylene carbonate in an amount of 1-75 wt EFFECT: more efficient recovery process. 6 cl, 9 dwg
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