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Title:
PROCESS FOR PRODUCING HEXAFLUOROETHANE AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO2001098240
Kind Code:
A3
Abstract:
The present invention intends to provide a process for producing CF3CF3 with good profitability using CF3HF2 containing a compound having chlorine atom within the molecule, and use thereof. In the process of the present invention, a gas mixture containing CF3CHF2 and a compound having chlorine atom within the molecule is reacted with hydrogen fluoride in the presence of a fluorination catalyst, thereby converting CC1F2CF3 as a main impurity into CF3CF3, and CF3CHF2 containing CF3CF3 is reacted with fluorine gas in the gaseous phase in the presence of a diluting gas.

Inventors:
OHNO HIROMOTO (JP)
KAGA KAZUNARI (JP)
OHI TOSHIO (JP)
Application Number:
JP0105256W
Publication Date:
June 06, 2002
Filing Date:
June 20, 2001
Export Citation:
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Assignee:
SHOWA DENKO KK (JP)
OHNO HIROMOTO (JP)
KAGA KAZUNARI (JP)
OHI TOSHIO (JP)
International Classes:
C07C17/10; C07C17/20; C07C17/21; C07C17/383; C07C17/395; C07C19/08; (IPC1-7): C07C19/08; C07C17/10; C07C17/20; C07C17/395
Domestic Patent References:
WO1999031032A11999-06-24
Foreign References:
EP0612709A11994-08-31
US5710351A1998-01-20
GB2311522A1997-10-01
Other References:
"METHODS FOR SEPARATING CHLORO-CARBONS FROM HYDROFLUOROALKANES", RESEARCH DISCLOSURE, KENNETH MASON PUBLICATIONS, HAMPSHIRE, GB, no. 360, 1 April 1994 (1994-04-01), pages 191 - 193, XP000446558, ISSN: 0374-4353
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