Process for the purification of pentafluoroethane by extractive

Details Process for the purification of pentafluoroethane by extractive Process for the purification of pentafluoroethane by extractive

1998-01-02

2000-03-21

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 67, 203100, 570178, B01D 334

Patent

active

060398450

ABSTRACT:
A process for the purification of pentafluoroethane (F125) containing chloropentafluoroethane (F115). The F125-F115 mixture to be purified is subjected to an extractive distillation, the extractant being a C.sub.5 -C.sub.8 perfluoroalkyl halide.

REFERENCES:
patent: 5087329 (1992-02-01), Felix
patent: 5200431 (1993-04-01), Dattani et al.
patent: 5346595 (1994-09-01), Clemmer et al.
Chang-Ming Hu and Ming-Hu Tu, Journal of Fluorine Chemistry, vol. 55, pp. 105-107 (1991).
French Search Report dated Sep. 10, 1997.

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