Patent ID: 7795482
Filing Date: 2010-09-14
Classification: B01J,C07C

Abstract:
1. A process for the preparation of fluorine-containing olefins comprising contacting a chlorofluoroalkene having the formula R f CCl═CClR f wherein each R f is a perfluoroalkyl group independently selected from the group consisting of CF 3 , C 2 F 5 , n-C 3 F 7 , i-C 3 F 7 , n-C 4 F 9 , i-C 4 F 9 and t-C 4 F 9 , and wherein one of the R f groups may be F with hydrogen in the presence of a catalyst at a temperature sufficient to cause replacement of the chlorine substituents of the chlorofluoroalkene with hydrogen to produce a fluorine-containing olefin having the formula E- or Z—R 1 CH═CHR 2 , wherein each of R 1 and R 2 are, perfluoroalkyl groups independently selected from the group consisting of CF 3 , C 2 F 5 , n-C 3 F 7 , i-C 3 F 7 , n-C 4 F 9 , i-C 4 F 9 and t-C 4 F 9 , and wherein R 2 may be F.