Patents Assigned to English China Clays Lovering Pochin & Co. Ltd.
  • Patent number: 4631091
    Abstract: An organoclay which is readily dispersible in an organic liquid composition, is prepared by suspending a smectite clay in water to form a fluid suspension; treating the suspension with a solution of an inorganic salt, the cation of which preferably has a valency of at least two, the concentration of the salt being such as to flocculate the smectite clay substantially completely; mixing the suspension of the flocculated smectite clay with a quaternary ammonium compound, at least one of the four alkyl groups of which has from 10 to 24 carbon atoms; and dewatering the resultant product.
    Type: Grant
    Filed: August 13, 1985
    Date of Patent: December 23, 1986
    Assignee: English China Clays Lovering Pochin & Co. Ltd.
    Inventor: Howard Goodman