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:
Jan. 17, 1995
Filed:
Jan. 26, 1994
Applicant:
Inventors:
Pierre Durual, Vernaison, FR;
Andre Lantz, Vernaison, FR;
Assignee:
Elf Atochem S.A., , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
570176 ;
Abstract
The invention relates to the synthesis of hydrogenperfluoroalkanes R.sub.F H, R.sub.F denoting a perfluoroalkyl radical containing 2 to 20 carbon atoms, by reaction of the corresponding perfluoroalkyl iodide R.sub.F I with an alkali metal hydroxide. The use of methanol as solvent allows the formation of tars to be avoided, an almost total conversion of R.sub.F I and an R.sub.F H of excellent purity to be obtained, and the alkali metal iodide by-product to be recovered easily.