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US 5,965,756 AGranted
Fused ring substituted indenyl metal complexes and polymerization process
AssigneeThe Dow Chemical Company
InventorsMark H. McAdon, Jasson T. Patton, Peter N. Nickias, Ravi B. Shankar, Francis J. Timmers, Brian W. Kolthammer, Daniel D. VanderLende, Steven M. Ueligger
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Abstract
Group 4 metal constrained geometry complexes comprising a fused ring indenyl derivative ligand, catalytic derivatives thereof, processes for preparing the same and their use as components of olefin polymerization catalysts are disclosed.
Claims8
A metal complex corresponding to the formula (I):
- ##STR24## where M is titanium, zirconium or hafnium in the +2, +3 or +4 formal oxidation state;
- R' and R" are independently each occurrence hydride, hydrocarbyl, silyl, germyl, halide, hydrocarbyloxy, hydrocarbylsiloxy, hydrocarbylsilylamino, di(hydrocarbyl)amino, hydrocarbyleneamino, di(hydrocarbyl)phosphino, hydrocarbylene-phosphino, hydrocarbylsulfido, halo-substituted hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, silyl-substituted hydrocarbyl, hydrocarbylsiloxy-substituted hydrocarbyl, hydrocarbylsilylamino-substituted hydrocarbyl, di(hydrocarbyl)amino-substituted hydrocarbyl, hydrocarbyleneamino-substituted hydrocarbyl, di(hydrocarbyl)phosphino-substituted hydrocarbyl, hydrocarbylene-phosphino-substituted hydrocarbyl, or hydrocarbylsulfido-substituted hydrocarbyl, said R' or R" group having up to 40 nonhydrogen atoms, and optionally two or more of the foregoing groups may together form a divalent derivative;
- R'" is a divalent hydrocarbylene- or substituted hydrocarbylene group forming a fused system with the remainder of the metal complex, said R'" containing from 1 to 30 nonhydrogen atoms;
- Z is a divalent moiety, or a moiety comprising one (.sigma.-bond and a neutral two electron pair able to form a coordinate-covalent bond to M, said Z comprising boron, or a member of Group 14 of the Periodic Table of the Elements, and also comprising nitrogen, phosphorus, sulfur or oxygen;
- X is a monovalent anionic ligand group having up to 60 atoms exclusive of the class of ligands that are cyclic, delocalized, .pi.-bound ligand groups;
- X' independently each occurrence is a neutral ligating compound having up to 20 atoms;
- X" is a divalent anionic ligand group having up to 60 atoms;
- p is zero, 1, 2, or 3;
- q is zero, 1 or 2, and
- r is zero or 1.
7 more elements
A process for preparing a neutral diene complex corresponding to the formula:
- where M is titanium in the +2 formal oxidation state;
- R' and R" are independently each occurrence hydride, hydrocarbyl, silyl, germyl halide, hydrocarbyloxy, hydrocarbylsiloxy, hydrocarbylsilylamino, di(hydrocarbyl)amino, hydrocarbyleneamino, di(hydrocarbyl)phosphino, hydrocarbylene-phosphino, hydrocarbylsulfido, halo-substituted hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, silyl-substituted hydrocarbyl, hydrocarbylsiloxy-substituted hydrocarbyl, hydrocarbylsilylamino-substituted hydrocarbyl, di(hydrocarbyl)amino-substituted hydrocarbyl, hydrocarbyleneamino-substituted hydrocarbyl, di(hydrocarbyl)phosphino-substituted hydrocarbyl, hydrocarbylene-phosphino-substituted hydrocarbyl, or hydrocarbylsulfido-substituted hydrocarbyl, said R' or R" group having up to 40 nonhydrogen atoms, and optionally two or more of the foregoing groups may together form a divalent derivative;
- R'" is a divalent hydrocarbylene- or substituted hydrocarbylene group forming a fused system with the remainder of the metal complex, said R'" containing from 1 to 30 nonhydrogen atoms;
- Z is a divalent moiety, or a moiety comprising one .sigma.-bond and a neutral two electron pair able to form a coordinate-covalent bond to M, said Z comprising boron, or a member of Group 14 of the Periodic Table of the Elements, and also comprising nitrogen, phosphorus, sulfur or oxygen;
- and
- X' independently is a neutral conjugated diene compound having up to 20 carbon atoms;
- comprising contacting a metal complex corresponding to the formula:
- ##STR28## where M is titanium in the +3 or +4 formal oxidation state;
- R', R", R'", and Z are as previously defined;
- X is a monovalent anionic ligand group having up to 60 atoms exclusive of the class of ligands that are cyclic, delocalized, .pi.-bound ligand groups;
- X" is a divalent anionic ligand group having up to 60 atoms;
- p is 1 or 2;
- and
- r is zero or 1
- with from 1to 2 equivalents of a neutral conjugated diene of the formula X' in an inert diluent i the presence of a reducing agent and recovering the resulting product.
12 more elements
Dependencies are inferred from the claim text.