Olefin polymerization catalyst

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 4/646 (2006.01) B01J 31/12 (2006.01) B01J 31/14 (2006.01) B01J 31/16 (2006.01) C08F 2/00 (2006.01) C08F 4/14 (2006.01) C08F 4/631 (2006.01) C08F 4/64 (2006.01) C08F 4/68 (2006.01) C08F 10/00 (2006.01) C08F 110/06 (2006.01) C08F 210/02 (2006.01) C08F 210/14 (2006.01)

Patent

CA 2190146

A catalyst composition for olefin polymerization and copolymerization which contains a complex of Ti, V, Zr, or Hf with a bidentate ligand or a tridentate ligand and a cocatalyst mixture containing dialkylaluminum halide and dialkylmagnesium. The bidentate ligands are described by general formulas Z-R- Z or Z-R-W-R-Z where R is an alkylene, cycloalkylene, arylene, or alkylarylene group; W is CH2, O, S, N-R', or SiR'2 where R' is an alkyl or aryl grup; and Z is O, S, N-H, or C(=O)-O. The tridentate ligands are described by formulas Z- (R-Z)-Z or Z-(R-U)-Z where R is an alkylene or arylene group; and Z and U are different and are O, S, N-H, or C-(=O)-O.

L'invention concerne une composition de catalyseurs pour la polymérisation et la copolymérisation d'oléfines, comprenant un complexe de Ti, V, Zr ou Hf avec un ligand bidentate ou un ligand tridentate et un mélange de cocatalyseurs contenant un halogénure de dialkylaluminium et un dialkylmagnésium. Les ligands bidentates sont constitués selon les formules générales Z-R-Z ou Z-R-W-R-Z, où R représente un groupe alkylène, cycloalkylène, arylène ou alkylarylène; W représente CH¿2?, O, S, N-R', ou SiR'¿2? où R' représente un groupe alkyle ou aryle; et Z représente O, S, N-H, ou C(C=O)-O. Les ligands tridentates sont constitués selon les formules Z-(R-Z)-Z ou Z-(R-U)-Z, où R représente un groupe alkylène ou arylène; et Z et U sont différents et représentent O, S, N-H, ou C-(=O)-O.

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