Process for the separation of 1,1-dichloro-1-fluoroethane...

Details Process for the separation of 1,1-dichloro-1-fluoroethane... Process for the separation of 1,1-dichloro-1-fluoroethane...

B - Operations, Transporting

01

D

202/65

B01D 3/36 (2006.01) C07C 17/38 (2006.01) C07C 17/386 (2006.01)

Patent

CA 2000136

PROCESS FOR THE SEPARATION OF 1,1-DICHLORO-1-FLUOROETHANE AND 1,1.1,3,3-PENTAFLUROBUTANE Abstract of the Disclosure 1,1 Dichloro-1-fluoroethane and 1,1,1,3,3-penta- fluorobutane are separated from their liquid mixtures, such as liquid mixtures resulting from the hydrofluorina- tion of 1,1,1-trichloroethane or vinylidene chloride. 1,1- Dichloro-1-fluoroethane and 1,1,1,3,3-pentafluorobutane are completely separated by distillation, by adding to the mixture thereof a liquid containing at least about 3 moles of hydrogen fluoride per mole of 1, 1-dichloro-1-fluoro- ethane in the mixture subject to separation.

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