Process for preparing and using meso/racemic-[bis (indenyl) etha

Details Process for preparing and using meso/racemic-[bis (indenyl) etha Process for preparing and using meso/racemic-[bis (indenyl) etha

1997-10-09

2000-08-15

Wu, David W.

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

Catalyst or precursor therefor

Organic compound containing

556 53, 502120, B01J 3122

Patent

active

061036560

ABSTRACT:
A process for the preparation of a meso/racemic-(bis(indenyl)ethane zirconium dichloride compound comprising (a) reacting zirconium tetrachloride with the solid reaction product of the bis(indenyl)ethane ligand with an alkyllithium in a solvent as reaction medium and (b) recovering a solid mixture of lithium chloride and meso/racemic composition of (bis(indenyl)ethane) zirconium dichloride, characterized in that the solvent used as reaction medium in a reaction (a) is an ether, pentane or a mixture thereof.

REFERENCES:
patent: 5017714 (1991-05-01), Welborn, Jr.
patent: 5117020 (1992-05-01), Razavi
patent: 5556997 (1996-09-01), Strickler et al.
patent: 5565533 (1996-10-01), Galimberti et al.
patent: 5849653 (1998-12-01), Dall'Occo et al.

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