Manufacture of 1,1,1,2-tetrafluoroethane

Details Manufacture of 1,1,1,2-tetrafluoroethane Manufacture of 1,1,1,2-tetrafluoroethane

C - Chemistry, Metallurgy

07

C

260/658.2

C07C 17/20 (2006.01) C07C 17/21 (2006.01) C07C 19/08 (2006.01)

Patent

CA 2009189

CR-8690 TITLE MANUFACTURE OF 1,1,1,2-TETRAFLUOROETHANE ABSTRACT OF THE DISCLOSURE This invention provides an improved process for the manufacture of 1,1,1,2-tetrafluoroethane by the reaction of HF and trichloroethylene in the presence of a catalyst to form a mixture comprising 2-chloro-1,1,1- 7 trifluoroethane and 1,1,1,2-tetrafluoroethane and, optionally, other organic by-products. The improvement resides in conducting the reaction in a single reaction zone while recovering the 1,1,1,2-tetrafluoroethane from the mixture and recycling the 2-chloro-1,1,1- trifluoroethane and, optionally, other organic by- products from the mixture to the reaction along with trichloroethylene and HF.

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