Heteroatom substituted metallocene compounds for olefin polymerization catalyst systems and methods for preparing them
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United States of America Patent
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Aug 21, 2001
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N/A
app pub date -
Sep 23, 1998
filing date -
Jan 30, 1996
priority date (Note) -
Expired
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Abstract
According to the invention a new catalyst precursor is obtained, in which alkoxy or siloxy substitution in the 2-position of 5-membered ring of indenyl compound has been carried out. Thereby a metallocene compound is achieved, in which an oxygen atom is directly bonded to the 2-position of a pentahapto indenyl moiety. The catalyst precursors can be used as components for olefin polymerization catalysts.
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