Supported polymerisation catalysts
AssigneeInnovene Europe Limited
InventorsGrant B. Jacobsen, Brian S. Kimberley, Sergio Mastroianni
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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.
Claims19
A supported polymerisation catalyst system prepared by a method consisting essentially of the following steps:
- (i) adding 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),
- wherein the molar ratio of the polymerisable monomer to polymerization catalyst is in the range 1:1 to 250:1.
A process for preparing a supported polymerisation catalyst system comprising the steps of:
- (i) adding 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),
- wherein the molar ratio of the polymerisable monomer to polymerization catalyst is in the range 1:1 to 250:1.
Dependencies are inferred from the claim text.