Production of monofluorotrichloroethane
AssigneeAllied Corporation
InventorsMichael Van Der Puy, Ronald F. Piskorz
Life of this patent
Estimating the term…
Abstract
1-Fluoro-1,1,2-trichloroethane is produced by a process which comprises the reaction of trichloroethylene with hydrogen fluoride using about 1.5 to 3.5 moles of hydrogen fluoride per mole of trichloroethylene, and conducting the reaction in the presence of a catalyst selected from the group consisting of CF.sub.3 SO.sub.3 H, TiCl.sub.4, MoCl.sub.5, WF.sub.6, NbCl.sub.5 and SnCl.sub.4 at a temperature in the range of 50.degree. to 150.degree. C. with a residence time of one quarter hour to five hours. The resulting product is relatively pure of overfluorinated by-products so as to be useful as a degreasing solvent.
Claims4
A method for the production of 1-fluoro-1,1,2-trichloroethane which comprises reacting trichloroethylene with hydrogen fluoride using about 1.5 to 3.5 moles of hydrogen fluoride per mole of trichloroethylene, and conducting the reaction in the presence of trifluoromethane sulfonic acid at a temperature range of about 50.degree. to 150.degree. C. for a residence time of about one-fourth hour to five hours.
Dependencies are inferred from the claim text.