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AssigneeLyondell Petrochemical Company
InventorsSandor Nagy, Ramesh Krishnamurti, John A. Tyrell, Leonard V. Cribbs, Mary Cocoman
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Disclosed is a novel bidentate pyridine transition metal catalyst having the general formula ##STR1## where Y is O, S, NR, ##STR2## each R is independently selected from hydrogen or C.sub.1 to C.sub.6 alkyl, each R' is independently selected from C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, C.sub.6 to C.sub.16 aryl, halogen, or CF.sub.3, M is titanium, zirconium, or hafnium, each X is independently selected from halogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, or ##STR3## L is X, cyclopentadienyl, C.sub.1 to C.sub.6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or ##STR4## and "n" is 1 to 4. Also disclosed is a method of making a poly-.alpha.-olefin comprising polymerizing an .alpha.-olefin monomer using that catalyst or a catalyst that has the general formula ##STR5## where Y, M, L, X, and R' were previously defined.
A method of making a poly-.alpha.-olefin comprising polymerizing an .alpha.-olefin monomer by contacting said .alpha.-olefin monomer in the presence of a cocatalyst with a catalyst that has the general formula ##STR18## where Y is O, S, NR, ##STR19## each R is independently selected from the group consisting of hydrogen and C.sub.1 to C.sub.6 alkyl, M is titanium, zirconium, or hafnium, each X is independently selected from the group consisting of halogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, and ##STR20## L is X, cyclopentadienyl, C.sub.1 to C.sub.6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or ##STR21## each R' is independently selected from the group consisting of R, C.sub.1 to C.sub.6 alkoxy, C.sub.6 to C.sub.16 aryl, halogen, and CF.sub.3, and each "n" is 1 to 4.
A method of making a poly-.alpha.-olefin comprising polymerizing an .alpha.-olefin monomer by contacting said .alpha.-olefin monomer in the presence of a cocatalyst with a catalyst that has the general formula ##STR23## where Y is O, S, NR ##STR24## each R is independently selected from the group consisting of hydrogen and C.sub.1 to C.sub.6 alkyl, M is titanium, zirconium, or hafnium, each X is independently selected from the group consisting of halogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, and ##STR25## L is X, cyclopentadienyl, C.sub.1 to C.sub.6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or ##STR26## each R' is independently selected from the group consisting of R, C.sub.1 to C.sub.6 alkoxy, C.sub.6 to C.sub.16 aryl, halogen, and CF.sub.3, and each "n" is 1 to 4.
A method of making a poly-.alpha.-olefin comprising polymerizing an .alpha.-olefin monomer by contacting said .alpha.-olefin monomer under polymerizing conditions in the presence of a methylaluminoxane cocatalyst with a catalyst that has the general formula ##STR27## where M is titanium or zirconium, X is halogen, L is halogen or cyclopentadienyl, and each R' is independently selected from the group consisting of hydrogen chlorine, methyl, and mixtures thereof.
Dependencies are inferred from the claim text.