Patents Assigned to Gavlin Associates
  • Purification of isoflurane by extractive distillation
    Patent number: 5230778
    Abstract: A method for the separation of Isoflurane from its admixture with other compounds produced in the chlorination of 2-difluoromethoxy-1,1,1-trifluoroethane including subjecting the mixture to distillation, distilling off the Isoflurane and effecting said distillation as an extractive distillation employing an extractive solvent which retards the vapor pressure of Isoflurane.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: July 27, 1993
    Assignees: Gavlin Associates, Halocarbon Product Corporation
    Inventors: Gilbert Gavlin, Boris Goltsin