E.i. Dupont De Nemours and Company

Raymond C Harker

Charles Joseph Noelke

William George O'Brien

David John Van Bramer

A process for removing carbon dioxide from a fluorocarbon carbon dioxide mixture in which the fluorocarbon carbon dioxide mixture is contacted with a semipermeable polyimide membrane to form at least one exit stream having an increased concentration of carbon dioxide and at least one exit stream having a reduced concentration of carbon dioxide.

CO.sub.2 removable from fluorocarbons by semipermeable membrane

A process for separating carbon dioxide from an unsaturated fluorinated compound carbon dioxide mixture comprising contacting the unsaturated fluorinated compound carbon dioxide mixture with a semipermeable membrane to form at least one exit stream having an increased concentration of carbon dioxide and at least one other exit stream having a reduced concentration of carbon dioxide.

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Williamstown, NJ, United States of America

Raymond C Harker