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Machine translation
1. (WO1996006063) PURIFICATION OF PENTAFLUOROETHANE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1996/006063    International Application No.:    PCT/GB1995/001873
Publication Date: 29.02.1996 International Filing Date: 08.08.1995
IPC:
C07C 17/38 (2006.01), C07C 17/386 (2006.01)
Applicants: IMPERIAL CHEMICAL INDUSTRIES PLC [GB/GB]; Imperial Chemical House, Millbank, London SW1P 3JF (GB) (For All Designated States Except US).
EWING, Paul, Nicholas [GB/GB]; (GB) (For US Only).
GOODYEAR, Gary [GB/GB]; (GB) (For US Only).
FITCHETT, Mark [GB/GB]; (GB) (For US Only).
FORSYTH, James, Malcolm [GB/GB]; (GB) (For US Only)
Inventors: EWING, Paul, Nicholas; (GB).
GOODYEAR, Gary; (GB).
FITCHETT, Mark; (GB).
FORSYTH, James, Malcolm; (GB)
Agent: OLDROYD, Alan; ICI Chemicals & Polymers Limited, Intellectual Property Dept., P.O. Box 11, The Heath, Runcorn, Cheshire WA7 4QE (GB)
Priority Data:
9417118.8 24.08.1994 GB
Title (EN) PURIFICATION OF PENTAFLUOROETHANE
(FR) PURIFICATION DU PENTAFLUOROETHANE
Abstract: front page image
(EN)A process for the purification of pentafluoroethane by removing chloropentafluoroethane therefrom which comprises contacting the impure pentafluoroethane in the gas phase with a liquid, polar organic compound extractant, preferably by countercurrent flow through a column, to form a liquid phase containing pentafluoroethane and recovering essentially pure pentafluoroethane from the liquid phase, preferably by simple distillation under reflux conditions. The liquid, polar organic compound may be an oxygen- and/or nitrogen-containing compound or a halogenated hydrocarbon.
(FR)L'invention concerne un procédé de purification du pentafluoroéthane par élimination du chloropentafluoroéthane qu'il renferme. Le pentafluoroéthane impur en phase gazeuse est mis en contact avec un composé organique polaire liquide agissant comme agent extracteur qui, de préférence, circule à contre-courant dans une colonne, pour former une phase liquide contenant le pentafluoroéthane à partir de laquelle est récupéré du pentafluoroéthane pratiquement pur, de préférence par distillation simple au reflux. Le composé organique polaire liquide peut être un composé renfermant de l'oxygène et ou de l'azote ou bien un hydrocarbure halogéné.
Designated States: CA, CN, JP, KR, MX, US.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: English (EN)
Filing Language: English (EN)