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US 2020/0002444 A1Published application
Catalyst Compositions and Use Thereof
AssigneeExxonMobil Chemical Patents Inc.
InventorsDonna J. Crowther, Hua Zhou, Jacqueline A. Lovell
Life of this patent
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Abstract
This invention relates to novel transition metal catalyst compounds comprising four oxygen atoms bonded to a transition metal where two of the oxygen groups are bond to the metal by dative bonds, catalyst systems comprising such and polymerization processes using such.
Claims32
A catalyst compound represented by the formula:
- wherein:
- a dotted line indicates a dative bond;
- M is a group 4 metal;
- z is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12, provided that when z is 0, then there is a direct bond between the phenyl rings in place of the (CH2)z group;
- each of R1, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 and R16 is, independently, hydrogen, a substituted C1 to C40 hydrocarbyl group, a C1 to C40 unsubstituted hydrocarbyl group, or a heteroatom, provided that any of adjacent R groups may form a fused ring or multicenter fused ring system where the rings may be aromatic, partially saturated or saturated, and provided that R9 and R10 may not form a bridge;
- each of R2 and R3, is, independently, hydrogen, a substituted C1 to C40 hydrocarbyl group, a C1 to C40 unsubstituted hydrocarbyl group, or a heteroatom, provided that R2 and R3 may not form a bridge;
- and
- each X is, independently, a substituted C1 to C40 hydrocarbyl group, a C1 to C40 unsubstituted hydrocarbyl group, a hydride, an amide, an alkoxide, a sulfide, a phosphide, a halide, an amine, a phosphines, an ethers, a combination thereof, where two X's optionally form a part of a fused ring or a ring system.
5 more elements
Dependencies are inferred from the claim text.