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US 5,345,015 AGranted
Process for producing 1,1,2-tetrafluoroethane
AssigneeShowa Denko K.K.
InventorsHiromoto Ohno, Makoto Miyamura, Tatsuharu Arai, Kazuo Muramaki, Toshio Ohi
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Abstract
A process for producing 1,1,1,2-tetrafluoroethane from trichloroethylene and HF, which comprises introducing products of a reaction of trichloroethylene with HF, and products of a reaction of 1,1,1-trifluoro-2-chloroethane with HF into a first distillation column either separately or as a mixture thereof, recovering HCl as a distillate from the top of the first distillation column, and introducing the remainder into a second distillation column.
Claims4
A process for producing 1,1,1,2-tetrafluoroethane through reaction of trichloroethylene with HF, which comprises:
- reacting trichloroethylene with HF in a first reactor to form 1,1,1-trifluoro-2-chloroethane,
- reacting 1,1,1-trifluoro-2-chloroethane with HF in a second reactor to form 1,1,1,2-tetrafluoroethane,
- introducing the products from the first and second reactors into a first distillation column either separately or as a mixture thereof,
- recovering HCl as a distillate from the top of the first distillation column, and
- introducing the remainder into a second distillation column to obtain 1,1,1,2-tetrafluoroethane.
2 more elements
Dependencies are inferred from the claim text.