Transition metal compound, ligand system, catalyst system and its use for the polymerization and copolymerization of olefins
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United States of America Patent
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Aug 4, 2009
Grant Date -
Jan 26, 2006
app pub date -
May 18, 2005
filing date -
Dec 23, 1999
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Abstract
A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.
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