| 摘要 |
HOE 91/F 244 of the disclosure: Bridged, chiral metallocenes, processes for their preparation and their use as catalysts Metallocenes of the formula I (I) in which, preferably, M1 is titanium, zirconium or hafnium, R1 is a radical in which M2 is carbon or silicon, R4 and R5 are identical and are hydrogen or an alkyl group, p is 1 or 2, R2 is hydrogen or an alkyl group and the radicals R3 are identical and are halogen or an alkyl group, form, together with an aluminoxane as a cocatalyst, a suitable catalyst system for olefin polymerization.
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