Metallocene compound, olefin polymerization catalyst containing the compound, and method for producing an olefin polymer by use of the catalyst

摘要

The present invention provides a metallocene compound which produces an olefin polymer having a high molecular weight with a high stereoregularity. The metallocene compound has the following formula (1):wherein (C5H4-mR<1>m) and (C5H4-nR<2>n) each independently represent a cyclopentadienyl group;C5H4-m and C5H4-n each independently represent a cyclopentadienyl ring;m represents an integer of 1-3;n represents an integer of 2 or 3;R<1 >and R<2 >are each independently a substituent bonded respectively to C5H4-m and C5H4-n, and represent a hydrocarbon group of 1-20 carbon atoms, a silicon-containing hydrocarbon group of 1-20 carbon atoms or a heteroaromatic group;each R<1>m and each R<2>n may be the same or different;one pair of R<2>'s in the R<2>n are bonded to each other to form at least one ring;Q represents a divalent group for cross-linking (C5H4-mR<1>m) and (C5H4-nR<2>n);M represents a titanium atom, a zirconium atom or a hafnium atom; andX and Y are the same or different and each a hydrogen atom, a halogen atom or a hydrocarbon group.