Supported polymerisation catalysts
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United States of America Patent
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Mar 16, 2010
Grant Date -
Oct 5, 2006
app pub date -
Aug 4, 2004
filing date -
Aug 22, 2003
priority date (Note) -
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Abstract
A supported polymerization catalyst system is prepared by a method comprising the following steps: (i) addition of a cocatalyst to a porous support, (ii) mixing a polymerisation catalyst with a polymerisable monomer, and (iii) contacting together the components resulting from steps (i) and (ii). The porous support is preferably silica and the polymerisation catalyst is preferably a metallocene. The polymerisable monomer is typically 1-hexene and the supported catalyst system provides advantages a slowly decaying activity profile particularly when operating in the gas phase.
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