SUPPORTED PHOSPHINIMINE POLYMERIZATION CATALYST

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...

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Hauptverfasser: DONALDSON, ROBERT, D, GAO, XIAOLIANG, CHISHOLM, P. S, MCKAY, IAN
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung: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.