Metallocene compound, olefin polymerization catalyst...

Details Metallocene compound, olefin polymerization catalyst... Metallocene compound, olefin polymerization catalyst...

2005-01-25

2005-01-25

Lu, Caixia (Department: 1713)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C526S160000, C526S243000

Reexamination Certificate

active

06846943

ABSTRACT:
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):in-line-formulae description="In-line Formulae" end="lead"?Q(C5H4-mR1m)(C5H4-nR2n)MXY  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein (C5H4-mR1m) and (C5H4-nR2n) each independently represent a cyclopentadienyl group;C5H4-mand C5H4-neach independently represent a cyclopentadienyl ring;m represents an integer of 1-3;n represents an integer of 2 or 3;R1and R2are each independently a substituent bonded respectively to C5H4-mand 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 R1mand each R2nmay be the same or different;one pair of R2's in the R2nare bonded to each other to form at least one ring;Q represents a divalent group for cross-linking (C5H4-mR1m) and (C5H4-nR2n);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.

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