Metallocene catalysts and associated methods of preparation and

Details Metallocene catalysts and associated methods of preparation and Metallocene catalysts and associated methods of preparation and

1997-10-17

1999-04-06

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

556 12, 556 28, 556 43, 556 53, 556 1, 534 11, 534 15, 526127, 526160, 526943, 502103, 502117, C07F 1700, C07F 700, C07F 900

Patent

active

058920790

ABSTRACT:
Novel metallocene compounds are provided which are useful as polymerization catalysts, particularly in the polymerization of addition polymerizable monomers such as olefinic or vinyl monomers. Preferred polymer compositions prepared using the novel catalysts are bimodal or multimodal in nature, typically having a bimodal or multimodal molecular weight distribution. The metallocenes are binuclear or multinuclear, and contain two or more chemically distinct active sites. Methods for synthesizing the novel catalysts are also provided, as are methods for using the novel compounds as homogeneous or heterogeneous polymerization catalysts.

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Katayama et al., "The Effect of Aluminum Compounds in the Copolymerization of Ethylene/.alpha. Olefins," in Macromol. Symp. (1995) 97:109-118.

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