Method of making 1,1,1-trifluoroethane
AssigneeHoneywell International Inc.
InventorsDaniel C. Merkel, Hsueh Sung Tung, Robert C. Johnson
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Abstract
A process for producing 1,1,1-trifluoroethane (HFC-143a) which process comprises reacting hydrogen fluoride with vinylidene chloride along with one or more of 1,1,-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b) and 1,1,1-trichloroethane (HCC-140a) in the presence of pentavalent antimony as a fluorination catalyst under conditions to produce 1,1,1-trifluoroethane (HFC-143a), generally in yields of 90% or more.
Claims11
A process for producing 1,1,1-trifluoroethane (HFC-143a) which comprises reacting vinylidene chloride and at least one of 1,1,-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b) and 1,1,1-trichloroethane (HCC-140a) with hydrogen fluoride in the presence of pentavalent antimony as a fluorination catalyst under conditions to produce 1,1,1-trifluoroethane (HFC-143a).
Dependencies are inferred from the claim text.