Sterically hindered metallocenes, synthesis and use
AssigneeExxonMobil Chemical Patents Inc.
InventorsDonna J. Crowther, Laughlin G. McCullough, Jacqueline A. Lovell
Life of this patent
Estimating the term…
Abstract
In at least one embodiment, a catalyst compound is represented by Formula (I): where M is a group 4 metal. Each of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, and R14 is independently hydrogen, or a linear or branched C1-C50 substituted or unsubstituted hydrocarbyl, halocarbyl or silylcarbyl. At least one of R1 and R3 is not hydrogen. Each X is independently a halide or C1-C50 substituted or unsubstituted hydrocarbyl, hydride, amide, alkoxide, sulfide, phosphide, halide, diene, amine, phosphine, ether, or a combination thereof, or two Xs are joined together to form a metallocycle ring, or two Xs are joined to form a chelating ligand, a diene ligand, or an alkylidene.
Claims33
A catalyst system comprising an activator, a fluorided silica support, and a catalyst compound represented by Formula (I):
- wherein M is Zr,
- each of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, and R14 is independently hydrogen, or a linear or branched C1-C50 substituted or unsubstituted hydrocarbyl, a halocarbyl or a silylcarbyl, wherein at least one of R1 and R3 is a linear or branched C1-C10 substituted or unsubstituted hydrocarbyl, and
- each X is independently a halide or a C1-C50 substituted or unsubstituted hydrocarbyl, a hydride, an amide, an alkoxide, a sulfide, a phosphide, a halide, a diene, an amine, a phosphine, an ether, or a combination thereof wherein two Xs are optionally joined together to form a metallocycle ring, or two Xs are optionally joined to form a chelating ligand, a diene ligand, or an alkylidene.
A catalyst system comprising an activator, a fluorided silica support, and a catalyst compound represented by Formula (I):
- wherein M is Zr,
- each of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, and R14 is independently hydrogen, or a linear or branched C1-C50 substituted or unsubstituted hydrocarbyl, a halocarbyl or a silylcarbyl, wherein at least one of R1 and R3 is not hydrogen, and
- each X is independently a halide or a C1-C50 substituted or unsubstituted hydrocarbyl, a hydride, an amide, an alkoxide, a sulfide, a phosphide, a halide, a diene, an amine, a phosphine, an ether, or a combination thereof wherein two Xs are optionally joined together to form a metallocycle ring, or two Xs are optionally joined to form a chelating ligand, a diene ligand, or an alkylidene, where the support material has been slurried in a non-polar solvent and the resulting slurry was first contacted with the activator for a period of time between about 0.5 hours and about 24 hours, isolated, and then contacted with a solution of at least one catalyst compound represented by Formula (I).
A catalyst system comprising an activator, a fluorided silica support, and a catalyst compound represented by Formula (I):
- wherein M is Zr,
- each of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, and R14 is independently hydrogen, or a linear or branched C1-C50 substituted or unsubstituted hydrocarbyl, a halocarbyl or a silylcarbyl, wherein at least one of R1 and R3 is not hydrogen, and
- each X is independently a halide or a C1-C50 substituted or unsubstituted hydrocarbyl, a hydride, an amide, an alkoxide, a sulfide, a phosphide, a halide, a diene, or a combination thereof, wherein two Xs are optionally joined together to form a metallocycle ring, or two Xs may be joined to form a chelating ligand, a diene ligand, or an alkylidene.
Dependencies are inferred from the claim text.