Patent ID: 6395940
Filing Date: 2002-05-28
Classification: C07C

Abstract:
A method for producing 1,2-dichloro-3,3,4,4,5,5-hexafluorocyclopentene, said method comprising a step of:(a) fluorinating octachlorocyclopentene by hydrogen fluoride in a gas phase in the presence of a fluorination catalyst, said fluorination catalyst comprising at least one compound selected from the group consisting of CrCl3.6H2O, Cr(NO3)3.9H2O, Cr2O3, SbCl5, Fe(NO3)3.9H2O, Zn(NO3)2.6H2O, CoCl2.6H2O, Co(NO3)2.9H2O, NiCl2.6H2O, Ni(NO3)2.9H2O, Cu(NO3)2.3H2O, MnCl2.4HO, and Al(NO3)3.9H2O.