Activated catalyst systems from substituted dialuminoxane...

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...

Reexamination Certificate

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Details

C502S120000, C502S152000, C526S129000, C526S133000, C526S165000

Reexamination Certificate

active

06958306

ABSTRACT:
A catalyst composition and method for preparing a supported catalyst system for olefin polymerization is provided. In one aspect, the catalyst composition includes a reaction product of a dialuminoxane and a halogen substituted aryl borane, wherein the reaction takes place on a support and at conditions sufficient to exchange one or more ligands on the dialuminoxane for one or more ligands on the halogen substituted aryl borane while on the support. In one embodiment, the method for preparing the supported catalyst system includes combining a dialuminoxane with a support to form a treated catalyst support, and combining a halogen substituted aryl borane with the treated catalyst support at conditions sufficient to exchange one or more ligands on the dialuminoxane for one or more ligands on the halogen substituted aryl borane while on the support to form a supported activator. The method further includes reacting one or more polymerization catalysts with the supported activator.

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Eugene You-Zian Chen, Tobin J. Marks, “Cocatalysts for Metal-Catalyzed Olefin Polymerization: Activators, Activation Processes, and Structure-Activity Relationships,” Chem. Rev. 2000, 100, pp. 1391-1434.

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