Catalysts containing at least one heterocyclic ligand for improving the catalysts' performance of olefin polymerization
AssigneeEquistar Chemicals, LP
InventorsShaotian Wang, Clifford C. Lee, Mark P. Mack
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Abstract
The present invention provides a non-metallocene catalyst comprising a complex having one or more ligands coordinated a transition metal. The catalyst contains substituents bonded to the transition metal through a heteroatom such as oxygen or sulfur. Furthermore, the complex includes a Group 3 to 10 transition or lanthanide metal and one or more anionic or neutral ligands in an amount that satisfies the valency of the metal such that the complex has a net zero charge. The present invention also discloses a method for preparing the catalyst and polymerizing olefins utilizing the catalyst of the present invention.
Claims35
A catalyst comprising a complex having Formula I:
- wherein
- M is a metal selected from Groups 3 to 10 and the lanthanide series of the Periodic Table;
- R1, R2, R3, R4, and R5 are independently hydrogen, C1-10 alkyl, C6-10 aryl, C7-15 aralkyl, C1-10 alkoxy, or C1-10 alkylamino, or C2-20 dialkylamino each of these groups optionally substituted with halogen, cyano, C1-4 alkoxy, or C1-4 alkyl;
- Y is sulfur, nitrogen, or phosphorus;
- and
- La and Lb are each independently an anionic or neutral ligand wherein La and Lb are optionally bridged together with an alkylene or heteroalkylene.
A catalyst comprising a complex having Formula I:
- wherein
- M is a metal selected from Groups 3 to 10 and the lanthanide series of the Periodic Table;
- R1, R2, R3, R4, and R5 are independently hydrogen, C1-10 alkyl, C6-10 aryl, C7-15 aralkyl, C1-10 alkoxy, C1-10 alkylamino, or C2-20 dialkylamino each of these groups optionally substituted with halogen, cyano, C1-4 alkoxy, or C1-4 alkyl;
- Y is sulfur or nitrogen;
- and
- La and Lb are each independently an anionic or neutral ligand wherein La and Lb are optionally bridged together with an alkylene or heteroalkylene.
A catalyst comprising a complex having Formula I:
- wherein
- M is a metal selected from Groups 3 to 10 and the lanthanide series of the Periodic Table;
- R1, R2, R3, R4, and R5 are independently hydrogen, C1-10 alkyl, C6-10 aryl, C7-15 aralkyl, C1-10 alkoxy, C1-10 alkylamino, or C2-20 dialkylamino each of these groups optionally substituted with halogen, cyano, C1-4 alkoxy, or C1-4 alkyl;
- Y is a heteroatom;
- and
- La is a anionic or neutral heterocyclic ligand and Lb is an anionic or neutral non-heterocyclic ligand.
A catalyst comprising a complex having Formula I:
- wherein
- M is selected from the group consisting of Groups 3 to 4 of the Periodic Table;
- R1, R2, R3, R4, and R5 are independently hydrogen, C1-10 alkyl, C6-10 aryl, C7-15 aralkyl, C1-10 alkoxy, C1-10 alkylamino, or C2-20 dialkylamino each of these groups optionally substituted with halogen, cyano, C1-4 alkoxy, or C1-4 alkyl;
- Y is a heteroatom;
- and
- La and Lb are each independently a neutral ligand selected from the group consisting of carbonyl, η6-aryl, η4-butadiene, η4-cyclobutadiene, η4-cyclooctatetraene, tertiary phosphine, and mixture thereof.
Dependencies are inferred from the claim text.