Patents Assigned to Cartilast Corporation
  • Devolatilization of anhydride polymers
    Patent number: 7737249
    Abstract: The present invention relates to the formation of low volatile anhydride-containing aromatic vinyl polymers by polymerizing the half ester of the anhydride with a vinyl aromatic monomer followed by devolatilizing the half-ester and reforming the anhydride at elevated temperatures and reduced pressures.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: June 15, 2010
    Assignee: Cartilast Corporation
    Inventor: Eugene R. Moore