Patents Examined by B. Murphy
  • Composition for the production of improved pulp
    Patent number: 6890404
    Abstract: Compositions and method for improving properties of pulp produced or reducing the digester cycle time in alkaline chemical pulping processes in which an effective amount of at least one selected phosphonate or carboxylate compound or mixtures thereof is admixed with the alkaline aqueous mixture in the digester of the chemical pulping process. The compositions and method are especially well suited for use in the Kraft pulping process.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: May 10, 2005
    Assignee: Solutia, Inc.
    Inventors: Jacob Owen Thompson, Sheldon Phillip Verrett, Wei Li, Ulrike Waltraud Tschimer