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US 5,210,342 AGranted
Purification process
AssigneeImperial Chemical Industries PLC
InventorGeoffrey J. Moore
Life of this patent
Estimating the term…
Abstract
A process for the removal of chlorocarbon impurities, and in particular chlorofluoromethane from difluoromethane which comprises contacting the impure difluoromethane with an active carbon.
Claims6
A process for the removal of chlorocarbon impurities from difluoromethane which comprises contacting the impure difluoromethane with active carbon at a temperature of from about -50.degree. C. to about 100.degree. C.
Dependencies are inferred from the claim text.