Supported metallocene catalysts for the production of polyolefin

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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502117, 502118, 502150, B01J 3114, B01J 3702

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active

054985820

ABSTRACT:
A catalyst precursor is formed by providing in slurry: (1) a carrier, which is porous and in the form of particles, or spheres, preferably particles of a crosslinked polymer, having a particle diameter of about 1 to about 300 microns, a porosity of about 0.001 to about 10 cc/gm, and a surface area of about 1 to about 1,000 m.sup.2 /gm; (2) a metallocene complex having an empirical formula

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Chien, James C. W., Isospecific Polymerization of Propylene Catalyzed by rac-Ethylenebis(indenyl)methylzirconium "Cation", J. Am. Chem., 8570-8571, 1991.
Hlatky, Gregory G., "Ionic, Base-Free Zirconocene Catalysts for Ethylene Polymerization", J. Am. Chem. Soc., 2728-2729, (1989).

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