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:
Jul. 18, 1995
Filed:
Mar. 30, 1994
Applicant:
Inventors:
Ralf Herkelmann, Hanover, DE;
Werner Rudolph, Hanover, DE;
Ruediger Sander, Sehnde, DE;
Alf Schulz, Neustadt, DE;
Assignee:
Solvay Fluor und Derivate GmbH, Hanover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
570123 ;
Abstract
A method for stabilizing and/or purifying perfluoroalkanes, particularly from perfluoroalkanes which contain polyfluoroalkane by-products from their production process, in which the perfluoroalkanes are stabilized and/or purified by reacting the polyfluoroalkane(s) with fluorine at elevated pressure and temperature, to obtain perfluoroalkanes which are substantially free of polyfluoroalkanes. The method has the advantage that the perfluorination takes place rapidly and without significant formation of by-products or decomposition products.