Patents Assigned to ExxonMobie Chemical Patents Inc.
  • Metallocenes and catalyst compositions derived therefrom
    Patent number: 7157591
    Abstract: Metallocenes and catalyst systems for olefin polymerization derived therefrom. The metallocenes may be represented by the formula: wherein M1 preferably is zirconium or hafnium; and R5 is different from hydrogen.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: January 2, 2007
    Assignee: ExxonMobie Chemical Patents Inc.
    Inventors: Terry John Burkhardt, James Robert Hart, William Thomas Haygood, Robert Tan Li