Stereorigid metallocene compound

Details Stereorigid metallocene compound Stereorigid metallocene compound

1996-06-19

2000-05-16

Wu, David W.

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

Organic compounds

Heavy metal containing

556 9, 556 11, 556 12, 556 13, 556 19, 556 20, 556 42, 556 43, 556 51, 556 52, 556 57, 556 58, 502152, 526943, 526160, C07F 1700

Patent

active

060639490

ABSTRACT:
The present invention relates to a stereorigid metallocene compound having as ligands at least two substituted or unsubstituted cyclopentadienyl groups which are connected to one another via a five-membered ring, where at least one cyclopentadienyl group is fused onto the five-membered ring and the ligand system of the stereorigid metallocene compound is different from 4-[.eta..sup.5 -3'-alkylcyclopentadienyl)-4,6,6-trimethyl-(.eta..sup.5 -2-alkyl-4,5-tetrahydropentalene]. The metallocene compound of the invention is suitable as a catalyst component for olefin polymerization.

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Gerhard Erker et al. Kurtzmitteilung/Short Communication "Synthesis of a Novel Annulated C.sub.1 -Bridged ansa-Metallocene System", Chem. Ber. 1994, 127, 1551-1553.
1.sup.st Journal of Organometallic Chemistry, Conference on Applied Organometallic Chemistry, p. 136 (1994).
Takaya Mise, et al, Excellent Stereoregular Isotactic Polymerizations of Propylene with C.sub.2 -Symmetric Silylene-Bridged Metallocene Catalysts, Chemistry Letters pp. 1852-1860 (1989).

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