Process for the purification of pentafluoroethane
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United States of America Patent
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Jul 27, 1999
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N/A
app pub date -
Sep 19, 1996
filing date -
Apr 8, 1994
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Abstract
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.
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