Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Reexamination Certificate
2006-07-11
2006-07-11
Shippen, Michael L. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
C570S178000
Reexamination Certificate
active
07074974
ABSTRACT:
A process comprising fluorinating tetrachloroethylene to obtain a crude pentafluoroethane containing impurities and bringing the crude pentafluoroethane containing impurities into contact with oxygen and/or an oxygen-containing compound in the presence of a catalyst. There can be obtained high-purity pentafluoroethane which can be used as a low-temperature refrigerant or an etching gas or as a starting material for the production of high-purity hexafluoroethane.
REFERENCES:
patent: 3004908 (1961-10-01), Haszeldine et al.
patent: 5710351 (1998-01-01), Ohno et al.
patent: 5801294 (1998-09-01), Sage et al.
patent: 1168875 (1997-12-01), None
patent: 0 844 226 (1998-05-01), None
patent: 1 110 936 (2001-06-01), None
patent: 3173010 (2001-03-01), None
patent: WO 03/014047 (2003-02-01), None
Yoshinaga, Masami et al. “Purification of hydrochlorofluorocarbons and hydrofluorocarbons.” Chemical Abstracts, May 10, 1993, vol. 118, No. 19, Columbus, Ohio.
Database WPI, Section Ch, Week 199734, Derwent Publications Ltd., London, GB, AN 1997-367579.
Foreign Office Action (with completed English translation).
Kaga Kazunari
Ohi Toshio
Ohno Hiromoto
Shippen Michael L.
Showa Denko K.K.
LandOfFree
Process for the production of fluoroethane and use of the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the production of fluoroethane and use of the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of fluoroethane and use of the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3610137