Metallocene compound and its use as catalyst component

Details Metallocene compound and its use as catalyst component Metallocene compound and its use as catalyst component

1995-12-22

1999-10-05

Nazario-Gonzalez, Porfirio

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502104, 502117, 502120, 502132, 526160, 526943, 556 11, 556 53, C08F 4642, C07F 1700, C07F 728

Patent

active

059623594

ABSTRACT:
The present invention relates to a multinuclear metallocene compound of the formula I, ##STR1## where M.sup.1 is a tetravalent metal, L.sup.1 are, independently of one another, identical or different and are each a substituted cyclopentadienyl group, L.sup.2 and L.sup.3 are, independently of one another, identical or different and are each a .pi. ligand, B are, independently of one another, identical or different and are each a divalent bridging unit, X are, independently of one another, identical or different and are each a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.10 -fluorocarbon radical or a hydrocarbon-containing radical having 1-40 carbon atoms, and k is an integer from 0 to 10. The metallocene compound of the present invention is suitable as a catalyst component for preparing olefin polymers.

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Amorose et al., "1--Sila-3-metallacyclobutanes, Precursors for the Generation of Highly Electrophilic Group 4 Metallocene Alkyl Cations. Spectroscopic and Structural Evidence of a Weakly Bound THF Ligand in Organometallics 1991, 10, 2191-2198.
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