Catalyst composition and process for olefin polymerization and copolymerization using supported metallocene catalyst systems
AssigneeSaudi Basic Industries Corporation
InventorsAkhlaq Moman, Orass Hamed, Atieh Abu-Raqabah
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Abstract
A catalyst composition includes: A) a solid catalyst precursor containing a metallocene compound, a magnesium compound and a particulate polymeric material; and B) a cocatalyst containing aluminum compound. The catalyst is prepared by combining metallocene compound, magnesium compound and particles of polymeric material to form a catalyst precursor; and activating the catalyst precursor with alkylaluminums and/or aluminoxanes. Homopolymeric or copolymeric polyolefins are produced by contacting olefins or olefins and alpha-olefins with the catalyst composition.
Claims30
A catalyst composition for polymerization of olefins comprising:
- A) a solid catalyst precursor consisting essentially of a metallocene compound represented by the formula (Cp)zTiXy wherein Cp represents an unsubstituted or substituted cyclopentadienyl ring, X represents a halogen atom, z is 1 or 2, and y is 2 or 3, a magnesium compound represented by the formula RaMgX2-a wherein R is a hydrocarbyl group having 1 to 20 carbon atoms, X is a halogen atom, and a is 1 or 2, and a polymeric support;
- and
- B) a cocatalyst comprising an aluminum compound.
Dependencies are inferred from the claim text.