Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1999-02-09
2000-08-01
Nazario-Gonzalez, Porfirio
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502103, 502117, 526127, 526160, 526943, 534 11, 534 15, 556 1, 556 11, 556 12, 556 28, 556 43, 556 53, C07F 1700, B01J 3100, C08F 464
Patent
active
060966777
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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Nazario-Gonzalez Porfirio
Reed Dianne E.
SRI - International
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