Supported polymerisation catalysts
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United States of America Patent
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Issued Date -
May 21, 2009
app pub date -
Jun 1, 2006
filing date -
Jun 9, 2005
priority date (Note) -
Abandoned
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Abstract
A method for the preparation of a supported polymerisation catalyst system, comprises: (1) contacting together in a suitable solvent (a) a transition metal polymerisation talyst and (b) a cocatalyst, (2) contacting the mixture from step (1) with a porous support material, and (3) removing the solvent is characterised in that the molar ratio of cocatalyst to transition metal catalyst is <10:1. The preferred polymerisation catalysts are transition metal compounds in particular metallocene complexes. Premixing the catalyst components before addition to the support leads to certain advantages in particular a more facile method of preparation without any loss in activity.
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