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US 2019/0144572 A1Published application
Methods for Restoring Metallocene Solids Exposed to Air
AssigneeChevron Phillips Chemical Company LP
InventorsQing Yang, Tony R. Crain, George R. Rajaendran
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Abstract
Methods for treating solid metallocene compounds that are exposed to air are disclosed. These methods include a step of contacting the exposed solid metallocene compound with a purging gas stream containing an inert gas, and optionally, subjecting the exposed solid metallocene compound to a sub-atmospheric pressure.
Claims21
1-20. (canceled)
A process comprising:
- (i) in any order, contacting an exposed solid metallocene compound with a purging gas stream comprising an inert gas, and subjecting the exposed solid metallocene compound to a sub-atmospheric pressure, to form a treated solid metallocene compound;
- (ii) forming a slurry of the treated solid metallocene compound in a diluent or a solution of the treated solid metallocene compound in a solvent;
- and
- (iii) combining the slurry or the solution, an activator, and optionally, a co-catalyst, to produce a catalyst composition.
1 more element
A process comprising:
- (a) contacting an exposed solid metallocene compound with a purging gas stream comprising an inert gas to form a treated solid metallocene compound;
- (b) forming a slurry of the treated solid metallocene compound in a diluent or a solution of the treated solid metallocene compound in a solvent;
- and
- (c) combining the slurry or the solution, an activator, and optionally, a co-catalyst, to produce a catalyst composition.
1 more element
Dependencies are inferred from the claim text.