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US 6,617,277 B2Granted
Supported metallocene catalyst system for olefin polymerization
AssigneeSaudi Basic Industries Corporation
InventorsOrass Hamed, Akhlaq Moman, Atieh Abu-Raqabah
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Abstract
A catalyst composition has a catalyst component which includes a metallocene transition metal compound, a magnesium compound, a hydroxyl containing compound, and a polymeric material. The catalyst component may also include asilicon compound and an aluminum compound. The catalyst component is combined with a cocatalyst and used in olefin polymerization.
Claims27
A catalyst composition for olefin polymerization which comprises
- A) a solid catalyst precusor component comprising a metallocene transition metal compound, a magnesium compound, a hydroxyl containing compound, and a polymeric support material, and
- B) a cocatalyst comprising aluminoxanes, aluminum alkyls or mixtures of aluminum alkyls and aluminoxanes.
A method for polymerizing olefins comprises contacting olefins with a catalyst composition which comprises
- (A) a solid catalyst precursor component comprising a metallocene transition metal compound, a magnesium compound, a hydroxyl containing compound, and a polymeric support material, and
- (B) a cocatalyst comprising aluminoxanes, aluminum alkyls or mixtures of aluminum alkyls and aluminoxanes,
- said contacting under olefin polymerization conditions.
Dependencies are inferred from the claim text.