Patents Represented by Attorney John F. Silberth
  • Patent number: 4141937
    Abstract: A process for the recovery of materials suitable for recycle to the manufacture of alkoxy or aryloxyphosphazenes including, inter alia, solvents, hydroxy compounds, acid acceptors and the like, from flash distillation of the washed phosphazene product together with a second vapor stream produced from the aqueous wash of the crude phosphazene product, whereby an aqueous phase and an organic phase are produced and recyclable materials are extracted from the aqueous phase into the organic phase, separating the organic phase from the aqueous phase and separating the organic phase into components by conventional methods which are suitable recycle streams for the phosphazene product manufacturing process.
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: February 27, 1979
    Assignee: Ethyl Corporation
    Inventor: Charles R. Bergeron