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
Estimating the term…
Abstract
Group 4 catalyst compounds containing di-anionic tridentate nitrogen/oxygen based ligands are provided. 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.
Claims31
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, 2 or 3;
- each R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 and R11 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, an alkoxide, 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 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, 2 or 3;
- each R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 and R11 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or an another 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;
- n is 1 or 2;
- Me is methyl;
- and
- an activator.
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, 2 or 3;
- each R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 and R11 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, an alkoxide, 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;
- Me is methyl;
- 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 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, 2 or 3;
- each R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 and R11 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or an another 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;
- n is 1 or 2;
- Me is methyl;
- and
- an activator.
Dependencies are inferred from the claim text.