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:
Sep. 18, 2001
Filed:
Dec. 08, 1994
Applicant:
Inventor:
V. N. Mallikarjuna Rao, Wilmington, DE (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 1/710 ;
U.S. Cl.
CPC ...
C07C 1/710 ;
Abstract
A highly selective process is disclosed for the hydrogenolysis of 2,2-dichlorohexafluoropropane (i.e., CFC-216aa or CF,CCl,CF,) to 2,2-dihydrohexafluoropropane (i.e., HFC-236fa or CF,CH,CF,) and 2-chloro-2-hydrohexafluoropropane (i.e., 226da or CF,CHClCF,). The process involves reacting the starting material with hydrogen at an elevated temperature of about 300° C. or less in the presence of a catalyst containing a catalytically effective amount of palladium supported on a support of fluorinated alumina and/or aluminum fluoride.