| abstract |
The present invention relates to a catalyst system comprising a metallocene, a promoter containing an organoboron aluminum compound, and optionally an additional organometallic compound. The catalyst system can advantageously be used for olefin polymerization, where the use of aluminoxanes such as methylaluminoxane (MAO), which should generally be used in excess as a promoter, may not be necessary and nevertheless high catalytic activity and good Polymer shape is achieved.n n n Metallocenes, organoboron aluminum compounds, olefin polymerization, catalytic activity, polymer shape. |