Metallocene-based catalysts

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...

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502103, 502152, 526126, 526129, 526150, 526160, 5263485, 5263486, 526351, 526352, C08F 464

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active

055762603

ABSTRACT:
The invention relates to a metallocene compound of the formula I ##STR1## where the two indenyl ligands have substitution patterns different from one another. The metallocene compound can be used as catalyst component for olefin polymerization.

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Ewen et al, "Syndiospecific Propylene Polymerizations with Group 4 Metallocenes" J. Am. Chem. Soc. 110 (1988) pp. 6255-6258.

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