Halocarbon Products Corporation

E.i. Dupont De Nemours and Company

Other

Lee Grant Sprague

Allen Capron Sievert

James Arnold Schultz

William J O'Donnell

Paul Mazzell, Jr

Arthur John Elliott

Katelyn Rae Walck

A process for the purification of fluoroalkanesulfonate salt comprising (a) contacting a mixture of said salt and an inorganic salt contaminant with a solvent to selectively dissolve said fluoroalkanesulfonate salt in solution, and (b) isolating the solution, to yield a fluoroalkanesulfonate salt containing less than 500 micrograms of inorganic salt contaminant per gram of fluoroalkanesulfonate salt, or containing less than a maximum of 0.3% by weight of individual solvent.

Purification of fluoroalkanesulfonate salts

A process for the production of trialkylsilyl (fluorosulfonyl)difluoroacetate by contacting (fluorosulfonyl)difluoroacetyl fluoride with siloxane. The amount of (fluorosulfonyl)difluoroacetic acid by-product in trialkylsilyl(fluorosulfonyl)difluoroacetate is reduced by contacting said mixture with trialkylsilyl halide.

Process for the production of trialkylsilyl(fluorosulfonyl)difluoroacetate

A process for preparing isoflurane (1-chloro-2,2,2-trifluoroethyl difluoromethyl ether) by reacting PFE (2,2,2-trifluoroethyl difluoromethyl ether) with chlorine in the presence of ultraviolet light and added water, at a low temperature and/or at a high conversion.

Preparation of isoflurane by reaction of 2,2,2-trifluoroethyl difluoro-methyl ether and chlorine in added water, at low temperatures and/or at higher conversions

A process for preparing hexafluoroacetone comprising the reaction of 2-chloro-1,1,1,3,3,3-hexafluoropropane &lsqb;R226da&rsqb; with oxygen in the presence of actinic light.

Method for the preparation of hexafluoroacetone

A grease made by combining polychlorotrifluoroethylene oil with a thickening agent comprising polychlorotrifluoroethylene (PCTFE) polymer. The thickening agent is made by polymerizing chlorotrifluoroethylene &lsqb;R-1113&rsqb; in the presence of a telogen, which is 2,2-dichloro-1,1,1-trifluoroethane&lsqb;R-123&rsqb; or a homolog thereof, namely CF,&mdash;CF,&mdash;CHCl,, CF,&mdash;CF,&mdash;CF,&mdash;CHCl,, and CF,&mdash;CF,&mdash;CF,&mdash;CF,&mdash;CHCl,.

Grease prepared from chemically inert oil and thickening agent, and process for making same

In a fire extinguisher containing a halogenated hydrocarbon extinguishant, the improvement wherein said extinguishant comprises at least one of 2-bromo-1,1,1,2-tetrafluoroethane and 2-bromo-2-chloro-1,1,1-trifluoroethane. These compounds will eventually decompose in the atmosphere so as not to present a hazard to the ozone layer.

Growing community of inventors

Augusta, GA, United States of America

Lee Grant Sprague