Polymerization catalyst systems, their production and use

Details Polymerization catalyst systems, their production and use Polymerization catalyst systems, their production and use

1995-09-11

1997-06-17

Nagumo, Mark

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526130, 526156, 526160, 526170, 526901, 526904, 526943, 5263486, 502152, 502117, 502103, C08F 476, C08F 4642

Patent

active

056398352

ABSTRACT:
This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The invention particularly relates to a supported metallocene catalyst system that does not require an activator or cocatalyst for the polymerization of olefins.

REFERENCES:
patent: 4808561 (1989-02-01), Welborn
patent: 5008228 (1991-04-01), Chang
patent: 5064802 (1991-11-01), Stevens et al.
patent: 5162466 (1992-11-01), Karol et al.
patent: 5214173 (1993-05-01), Jordan et al.
patent: 5241025 (1993-08-01), Hlatky et al.
Hawley's Condensed Chemical Dictionary, 11th Ed., Van Nostrand Reinhold New York, 1987; inside front cover.
Kaminsky et al., "Olefin Polymerization with Highly Active Soluble Zirconium Compounds Using Aluminoxane as Co-Catalyst", Makromol. Chem., Macromol. Symp. 3, 377-387 (1986).
Ahlers et al., "Variation of molecular weight distribution of polyethylenes obtained with homogeneous Ziegler-Natta catalysts", Makromol. Chem., Rapid Commun. 9, 457-461 (1988).
Soga et al., "Activation of SiO2-supported zirconocene catalysts by common trialkylaluminums", Makromol. Chem. 194, 3499-3504 (1993).

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