Bridged metallocene compound, olefin polymerization catalyst containing the same, and ethylene polymer obtained with the catalyst
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United States of America Patent
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Jul 22, 2014
Grant Date -
Apr 24, 2014
app pub date -
Dec 20, 2013
filing date -
Nov 19, 2007
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Abstract
According to the invention, a single or plural kinds of bridged metallocene compounds having differing cyclopentadienyl-derived groups afford macromonomers that are a source of long-chain branches and simultaneously catalyze the repolymerization of the macromonomers into olefin polymers having a large number of long-chain branches, small neck-in in the T-die extrusion, small take-up surge and superior mechanical strength. The olefin polymerization catalysts and the polymerization processes can efficiently produce the olefin polymers.
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