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:
Feb. 13, 2001
Filed:
Apr. 09, 1998
Michael Van Der Puy, Erie County, NY (US);
Richard Elmer Eibeck, Sedona, AZ (US);
B. V. Bindu Madhavan, Erie County, NY (US);
Hsueh Sung Tung, Erie County, NY (US);
Lois Anne Short Ellis, Erie County, NY (US);
AlliedSignal Inc., Morristown, NJ (US);
Abstract
The invention relates to the preparation of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa), useful as an intermediate in the production of 1,1,1,3,3-pentafluoropropane (HFC-245fa). The invention further relates to a process for the preparation of HFC-245fa comprising reacting HCFC-235fa with hydrogen in the presence of a reduction catalyst wherein the said HCFC-235fa is prepared by reacting CCl,CHCCl,with hydrogen fluoride in the presence of fluorination catalyst in either the liquid phase or the vapor phase.