C - Chemistry – Metallurgy – 07 – C
Patent
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.
Corr Stuart
Ewing Paul Nicholas
Martin John Stuart
Watson Michael John
Gowan Intellectual Property
Imperial Chemical Industries Plc
Ineos Fluor Holdings Limited
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