Catalysts for producing broad molecular weight distribution polyolefins in the absence of added hydrogen
First Claim
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1. A catalyst composition capable of producing an olefin polymer having more short chain branches at Mn than at Mw, the catalyst composition comprising catalyst component I, catalyst component II, and at least one activator, wherein:
- catalyst component I comprises;
a compound having formula (A);
a compound having formula (B);
a dinuclear compound formed from an alkenyl-substituted compound having formula (A), formula (B), or a combination thereof;
orany combination thereof, wherein;
formula (A) is
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Abstract
The present invention provides a polymerization process utilizing a dual metallocene catalyst system for the production of broad or bimodal molecular weight distribution polymers, generally, in the absence of added hydrogen. Polymers produced from the polymerization process are also provided, and these polymers can have a Mn in a range from about 9,000 to about 30,000 g/mol, and a short chain branch content that decreases as molecular weight increases.
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Citations
25 Claims
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1. A catalyst composition capable of producing an olefin polymer having more short chain branches at Mn than at Mw, the catalyst composition comprising catalyst component I, catalyst component II, and at least one activator, wherein:
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catalyst component I comprises; a compound having formula (A); a compound having formula (B); a dinuclear compound formed from an alkenyl-substituted compound having formula (A), formula (B), or a combination thereof;
orany combination thereof, wherein; formula (A) is - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification