Patent ID: 9315431
Filing Date: 2016-04-19
CPC Classification: C01B,C07C

Claim Text:
1. A process of fluorination of 1,1,2,3-tetrachloropropene comprising: (i) contacting 1,1,2,3,-tetrachloropropene with hydrogen fluoride in a liquid phase in a solvent, under conditions sufficient to form a reaction mixture comprising 2-chloro-3,3,3-trifluoropropene, HCl, HF and 1,1,1,2-tetrafluoro-2-chloropropane, wherein the solvent is 1,2-dichloroethane, 1,2,3-trichloropropane, 1-chloro-1-fluoroethane, 1,1-difluoroethane, 1,1-dichloroethane, 1,3-dichloro-1-fluorobutane, 1,1,1,3,3-pentafluorobutane and 1,1,2-trichloro-2,2-difluoroethane, or a mixture thereof; and (ii) separating the reaction mixture into a first stream comprising HCl, and a second stream comprising HF, 2-chloro-3,3,3-trifluoropropene and 1,1,1,2-tetrafluoro-2-chloropropane.