Patent ID: 6294055
Filing Date: 2001-09-25
Classification: C01B,C07C

Abstract:
A process for the separation of hydrogen fluoride from a mixture comprising 1,1,1,3,3-pentafluorobutane and HF,wherein the process comprisesextracting said mixture with at least one organic solvent, under conditions of pressure which is sufficient to maintain the mixture in a liquid state,wherein said pressure is the autogenous pressure of the mixture or a pressure less than 10 bars,to provide an organic phase enriched in 1,1,1,3,3-pentafluorobutane and a second phase enriched in hydrogen fluoride; andseparating said organic phase enriched in 1,1,1,3,3-pentafluorobutane from said second phase enriched in hydrogen fluoride.