Patents Assigned to Basell Polyolefins
  • Monocyclopentadienyl complexes of chromium, molybdenum or tungsten
    Patent number: 6838563
    Abstract: Substituted monocyclopentadienyl, monoindenyl, monofluorenyl and heterocyclopentadienyl complexes of chromium, molybdenum or tungsten in which at least one of the substituents on the cyclopentadienyl ring carries a donor function which is bonded rigidly, not exclusively via sp3-hybridized carbon or silicon atoms, and a process for the polymerization of olefins.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: January 4, 2005
    Assignee: Basell Polyolefins
    Inventors: Shahram Mihan, Dieter Lilge, Paulus de Lange, Günther Schweier, Martin Schneider, Ursula Rief, Udo Handrich, Johannes Hack, Markus Enders, Gunter Ludwig, Ralph Rudolph