Patents Assigned to Ford & Dain Research Limited
  • Extractants
    Patent number: 4370237
    Abstract: An extraction process for extracting ionic values from an aqueous solution containing same which comprises contacting the aqueous solution with an organic hydrophobic liquid extractant phase comprising an extractant for ions, the molecules of which extractant contain at least one hydrophobic group selected from cyclic phosphazene radicals, linear siloxane radicals, cyclic siloxane radicals, and three-dimensional siloxane radicals, and stripping resulting loaded extractant phase with an aqueous stripping liquid phase.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: January 25, 1983
    Assignee: Ford & Dain Research Limited
    Inventors: Richard J. Dain, Gary D. Manning, Alfred R. Burkin