Catalysts and processes for the polymerization of olefins
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United States of America Patent
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Mar 18, 2003
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N/A
app pub date -
Jan 14, 2000
filing date -
Jun 20, 1995
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Expired
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Abstract
Catalysts for the polymerization of olefins comprise the product of the reaction between: (A) a titanium, zirconium or hafnium product with substituted cyclopentadiene ligands, (B) a mixture of two organometallic aluminium compounds, with at least one of the groups bound to the aluminium being other than a linear alkyl, and (C) water. When used in the polymerization of olefins, these catalysts show higher activities, at short residence times, than corresponding catalysts obtained from the individual components of the above-mentioned mixtures of aluminium compounds.
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