The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 1993
Filed:
Mar. 12, 1992
Wolfgang W Dukat, Konigstein, DE;
John H Holloway, Leicester, GB;
Eric G Hope, Warwickshire, GB;
Matthias Rieland, Hanover, DE;
Paul J Townson, Lancashire, GB;
Richard L Powell, Cheshire, GB;
Imperial Chemical Industries PLC, London, GB;
Abstract
A process for the preparation of an alkane containing fluorine by contacting a halogenated alkane containing at least one hydrogen atom and at least one halogen atom selected from chlorine, bromine and iodine with a transition metal fluoride selected from osmium hexafluoride, iridium hexafluoride, rhenium hexafluoride, ruthenium pentafluoride, chromium pentafluoride, vanadium pentafluoride, rhenium heptafluoride and uranium hexafluoride, whereby to replace at least one hydrogen atom or at least one chlorine, bromine or iodine atom in said halogenated alkane starting material by a fluorine atom. Use of certain of the defined transition metal fluorides, e.g. OsF.sub.6, IrF.sub.6 and ReF.sub.6 allows the selective replacement of halogen by fluorine, while others, e.g. UF.sub.6, VF.sub.5 and ReF.sub.7 allow selective replacement of hydrogen by fluorine.