Process for the purification of pentafluoroethane

Details Process for the purification of pentafluoroethane Process for the purification of pentafluoroethane

C - Chemistry, Metallurgy

07

C

C07C 17/386 (2006.01) C07C 19/08 (2006.01)

Patent

CA 2185328

A process for the purification of pentafluoroethane by removing chloropentafluoroethane therefrom which comprises adding to the impure pentafluoroethane a component which undergoes a non-ideal interaction with chloropentafluoroethane and/or with the azeotrope of chloropentafluoroethane and pentafluoroethane such that the volatility of chloropentafluoroethane and/or the azeotrope of chloropentafluoroethane and pentafluoroethane relative to bulk pentafluoroethane is increased and distilling the mixture.

Procédé de purification du pentafluoroéthane comprenant les étapes consistant à enlever de celui-ci le chloropentafluoroéthane par addition au pentafluoroéthane impur d'un constituant subissant une interaction non idéale avec le chloropentafluoroéthane et/ou avec l'azéotrope du chloropentafluoroéthane et du pentafluoroéthane, afin d'augmenter la volatilité du chloropentafluoroéthane et/ou dudit azéotrope par rapport au pentafluoroéthane en masse, et à distiller le mélange.

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