Bicyclic organosilicon compounds as electron donors for polyolefin catalysts
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United States of America Patent
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Sep 7, 2010
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Apr 13, 2009
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Apr 13, 2009
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Abstract
Cyclic organosilicon compounds that may be employed as an electron donor for polymerization catalyst systems, polymerization catalyst systems employing the cyclic organosilicon compounds as an electron donor, methods of making the polymerization catalyst systems, and polymerization processes to produce polyolefin are disclosed. The organosilicon compounds, which are useful as electron donors in polymerization catalyst systems for the production of polyolefins, are represented by the formula:, respectively, 1-8 atoms. The bridging group is selected from the group consisting of aliphatic, alicyclic, and aromatic bivalent radicals.
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