Catalyst compounds and use thereof
AssigneeExxonMobil Chemical Patents Inc.
InventorsGarth R. Giesbrecht, Timothy M. Boller, Alexander Z. Voskoboynikov, Andrey F. Asachenko, Mikhail V. Nikulin, Alexey A. Tsarev
Life of this patent
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Abstract
This invention relates to Group 4 catalyst compounds containing di-anionic tridentate nitrogen/oxygen based ligands. The catalyst compounds are useful, with or without activators, to polymerize olefins, particularly α-olefins, or other unsaturated monomers. Systems and processes to oligomerize and/or polymerize one or more unsaturated monomers using the catalyst compound, as well as the oligomers and/or polymers produced therefrom are also provided.
Claims36
A transition metal catalyst compound represented by one of the structures:
- wherein
- each X is, independently, a hydride, a halogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl;
- w is 0, 1, 2or 3;
- each R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, and R12 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, a sulfide, an amide, a phosphide, a silyl or an anionic heteroatom-containing group, or independently, may join together to form a C4 to C62 cyclic or polycyclic ring structure;
- L is a neutral ligand bonded to M;
- M is Hf, Zr or Ti;
- m is 0, 1 or 2 and indicates the absence or presence of L;
- and
- n is 1 or 2.
A transition metal catalyst composition comprising an activator and a compound represented by one of the structures:
- wherein
- each X is, independently, a hydride, a halogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl;
- w is 0, 1, 2or 3;
- each R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, and R12 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, a sulfide, an amide, a phosphide, a silyl or an anionic heteroatom-containing group, or independently, may join together to form a C4 to C62 cyclic or polycyclic ring structure;
- L is a neutral ligand bonded to M;
- M is Hf, Zr or Ti;
- m is 0, 1 or 2 and indicates the absence or presence of L;
- and
- n is 1 or 2.
A process for polymerization comprising:
- contacting ethylene and, optionally, one or more unsaturated monomers with a transition metal catalyst compound represented by one of the structures:
- wherein
- each X is, independently, a hydride, a halogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl;
- w is 0, 1, 2or 3;
- each R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 if present, and R12 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, a sulfide, an amide, a phosphide, a silyl or an anionic heteroatom-containing group, or independently, may join together to form a C4 to C62 cyclic or polycyclic ring structure;
- L is a neutral ligand bonded to M that may include molecules such as but not limited to pyridine, acetonitrile, diethyl ether, tetrahydrofuran, dimethylaniline, trimethylamine, tributylamine, trimethylphosphine, triphenylphosphine, lithium chloride, ethylene, propylene, butene, octene, styrene, and the like;
- M is Hf, Zr or Ti;
- m is 0, 1 or 2 and indicates the absence or presence of L;
- and
- n is 1 or 2.
A process for polymerization comprising:
- contacting ethylene and, optionally, one or more unsaturated monomers with a transition metal catalyst composition comprising an activator and a compound represented by one of the structures:
- wherein
- each X is, independently, a hydride, a halogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl;
- w is 0, 1, 2or 3;
- each R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 if present, and R12 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, a sulfide, an amide, a phosphide, a silyl or an anionic heteroatom-containing group, or independently, may join together to form a C4 to C62 cyclic or polycyclic ring structure;
- L is a neutral ligand bonded to M;
- M is Hf, Zr or Ti;
- m is 0, 1 or 2 and indicates the absence or presence of L;
- and
- n is 1 or 2.
Dependencies are inferred from the claim text.