Production of pentafluoroethane
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United States of America Patent
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Apr 27, 1999
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N/A
app pub date -
Jun 14, 1996
filing date -
Dec 16, 1993
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Abstract
A process for the production of pentafluoroethane which comprises the steps (i) producing a composition comprising a compound of formula C.sub.2 HCl.sub.x F.sub.y in which x=1, 2 or 3 and y=2, 3 or 4 provided that x+y is 5, contaminated with a compound of formula C.sub.2 Cl.sub.x+1 F.sub.y, (ii) separating the compound of formula C.sub.2 HCl.sub.x F.sub.y from the compound of formula C.sub.2 Cl.sub.x+1 F.sub.y and (iii) contacting the compound of formula C.sub.2 HCl.sub.x F.sub.y with hydrogen fluoride in the presence of a fluorination catalyst whereby to produce pentafluoroethane.
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