Polymerization process using a supported, treated catalyst system
AssigneeUnivation Technologies, LLC
InventorSun-Chueh Kao
Life of this patent
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Abstract
The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system produced by a process comprising the steps of: (a) forming a supported bimetallic catalyst system comprising a first catalyst component and a metallocene catalyst compound; and (b) contacting the supported bimetallic catalyst system of (a) with at least one methylalumoxane-activatable compound.
Claims27
A supported, treated catalyst system produced by a process comprising the steps of:
- (a) forming a supported bimetallic catalyst system comprising a first catalyst compound and a second catalyst compound, wherein the first and second catalyst compounds are supported on a common support and comprise Group 4 or 5 metals;
- wherein the common support is an inorganic oxide;
- and
- (b) contacting the supported bimetallic catalyst system of (a) with at least one compound that can be activated by methylalumoxane, wherein said compound is different from the first catalyst compound and the second catalyst compound.
A supported, treated catalyst system produced by a process comprising the steps of:
- (a) forming a supported bimetallic catalyst system comprising a first catalyst compound and a second catalyst compound, wherein the second catalyst compound comprises a metallocene catalyst compound, and wherein the first and second catalyst compounds are supported on a common support;
- wherein the common support is an inorganic oxide;
- and
- (b) contacting the supported bimetallic catalyst system of (a) with at least one compound that can be activated by methylalumoxane, wherein said compound is different from the first catalyst compound and the second catalyst compound;
- wherein the metallocene catalyst compound is selected from the group consisting of:
- bis(n-butylcyclopentadienyl)zirconium dichloride;
- bis(n-butylcyclopentadienyl)zirconium difluoride;
- (tetramethylcyclopentadienyl) (n-propylcyclopentadienyl)zirconium dichloride;
- (pentamethylcyclopentadienyl) (n-propylcyclopentadienyl)zirconium dichloride;
- bis(1,3-methylbutylcyclopentadienyl)zirconium dichloride;
- and bis(n-propylcyclopentadienyl)hafnium difluoride.
Dependencies are inferred from the claim text.