Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1989-12-27
1991-07-16
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502104, 502113, 502115, 502117, 502120, 502125, 502127, C08F 4646
Patent
active
050325620
ABSTRACT:
There is disclosed a supported olefin polymerization catalyst composition comprising a precursor and a catalyst activator. The precursor comprises a magnesium compound, e.g., dibutylmagnesium, a cyclopentadienyl group-containing zirconium compound, and a titanium and/or a vanadium compound, e.g., TiCl.sub.4, and an organic compound, e.g., an alcohol. The catalyst activator is a mixture of a conventional Ziegler/Natta co-catalyst and a zirconium sites activator, e.g., methylaluminumoxane. The catalyst is used in the presence of small amounts of hydrogen to produce polymers having multimodal molecular weight distribution in a single reactor.
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Lo Frederick Y.
Nowlin Thomas E.
Shirodkar Pradeep P.
Garvin Patrick P.
McKillop Alexander J.
Mobil Oil Corporation
Pebbles Brent M.
Schneller Marina V.
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