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:
May. 26, 1998
Filed:
Nov. 01, 1996
Central Glass Company Limited, Yamaguchi, JP;
Abstract
The invention relates to a method of preparing a saturated hydrofluorocarbon represented by C.sub.n H.sub.p F.sub.z, by reducing a chlorofluorocarbon or hydrochlorofluorocarbon represented by C.sub.n H.sub.x Cl.sub.y F.sub.z by hydrogen in the presence of a catalyst having palladium and bismuth, wherein 'n' is an integer within a range from 3 to 6, 'x' is an integer within a range from 0 to 2n, each of 'y' and 'z' is an integer within a range from 1 to 2n+1, x+y+z=2n+2 or 2n, p=x+y when x+y+z=2n+2, and p=x+y+2 when x+y+z=2n. The catalyst has a long lifetime in the reduction. According to the invention, conversion of the chlorofluorocarbon or hydrochlorofluorocarbon is high, and the saturated hydrofluorocarbon is prepared with a high yield and a high selectivity.