Supported phosphinimine polymerization catalyst

C - Chemistry – Metallurgy – 08 – F

Patent

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C08F 4/64 (2006.01) C08F 10/02 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 110/02 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2357385

A phosphinimine catalyst for olefin polymerization is supported on a directly fluorided metal oxide with an aluminoxane. This catalyst is highly active for olefin polymerization in comparison to prior art catalysts which use non-fluorided metal oxide supports. The directly fluorided metal oxide may be conveniently prepared by contacting the precursor metal oxide with a simple alkali metal salt (such as NaF) in an aqueous slurry.

Divulgation d'un catalyseur à base de phosphinimine pour la polymérisation d'oléfines sur support d'oxyde métallique directement fluoré avec un aluminoxane. En comparaison de l'état antérieur de la technique des catalyseurs pour laquelle on utilisait des supports d'oxyde métallique non fluoré, ce catalyseur est très efficace pour la polymérisation d'oléfines. L'oxyde métallique directement fluoré peut être préparé facilement par mise en contact d'un oxyde métallique précurseur avec un sel de métal alcalin simple (comme NaF) dans une boue aqueuse.

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