Claims
- 1. A process for making a hydrocarbon-soluble alkylaluminoxane composition which comprises:
- (a) preparing an alkylaluminoxane precursor via non-hydrolytic means;
- (b) adding to that precursor an effective amount of an organoaluminum compound which prevents formation of insoluble species; and
- (c) converting that modified precursor to an alkylaluminoxane.
- 2. The process according to claim 1 where the organoaluminum compound is at least one trialkylaluminum compound where each alkyl group contains two or more carbon atoms.
- 3. The process according to claim 1 where the organoaluminum compound is at least one alkylaluminoxane where the alkyl moieties contain two or more carbon atoms.
- 4. The process according to any of claims 1, 2 or 3 where the alkylaluminoxane precursor is prepared by treating at least one trialkylaluminum compound with a compound containing an oxygen-carbon bond.
- 5. The process according to claim 4 where the modified precursor is converted to an alkylaluminoxane composition by thermolysis.
- 6. The process according to claim 5 where the alkylaluminoxane precursor is formed by treating trimethylaluminum with carbon dioxide.
- 7. A process for making a hydrocarbon-soluble alkylaluminoxane composition that comprises:
- (a) preparing a modified alkylaluminoxane precursor via non-hydrolytic means; and
- (b) converting that modified precursor to an alkylaluminoxane, wherein the modified alkylaluminoxane precursor is formed by treating a mixture of trimethylaluminum and an organoaluminum compound, where the alkyl moieties contain two or more carbon atoms, with a compound containing an oxygen-carbon bond.
- 8. The process according to claim 7 where the alkylaluminoxane precursor is formed by treating trimethylaluminum and the organoaluminum compound with carbon dioxide.
- 9. The process according to claim 7 where the modified precursor is converted to an alkylaluminoxane composition by thermolysis.
- 10. The process according to claim 7 where the alkylaluminoxane precursor is formed by treating trimethylaluminum with carbon dioxide.
- 11. A process for making a hydrocarbon-soluble alkylaluminoxane composition that comprises:
- (a) preparing a methylaluminoxane precursor via non-hydrolytic means;
- (b) converting that precursor to a methylaluminoxane; and
- (c) treating the methylaluminoxane material with a solubilizing amount of an alkylaluminoxane wherein the alkyl moieties contain two or more carbon atoms.
- 12. The process according to claim 11 wherein the methylaluminoxane precursor is prepared by treating trimethylaluminum with a compound containing an oxygen-carbon bond.
- 13. The process according to claim 11 where the methylaluminoxane precursor is converted to methylaluminoxane by thermolysis.
- 14. The process according to claim 11 where the methylaluminoxane precursor is formed by treating trimethylaluminum with carbon dioxide.
- 15. The process according to any one of claims 1, 7 or 11 conducted in aliphatic hydrocarbon solvent.
- 16. The process according to any one of claims 1, 7 or 11 conducted in aromatic hydrocarbon solvent.
- 17. A alkylaluminoxane composition produced by any of the processes of claims 1, 7 or 11.
- 18. A supported alkylaluminoxane composition produced by any of the processes of claims 1, 7 or 11.
- 19. A silica supported alkylaluminoxane composition produced by any of the processes of claims 1, 7 or 11.
- 20. Alkylaluminoxane compositions produced by any of the processes of claims 1, 7 or 11 in an aliphatic hydrocarbon solvent.
- 21. Alkylaluminoxane compositions produced by any of the processes of claims 1, 7 or 11 in an aliphatic hydrocarbon solvent selected from the group consisting of heptane, one or more octanes, one or more decanes, and mixtures thereof.
- 22. A alkylaluminoxane composition produced by any of the processes of claims 1, 7 or 11 in an aromatic hydrocarbon solvent.
- 23. A polymerization catalyst composition which contains, as a cocatalyst component, at least one alkylaluminoxane composition produced by any of the processes of claims 1, 7 or 11.
Parent Case Info
This application is a continuation-in-part of U.S. Ser. No. 576,892, now allowed, filed Dec. 22, 1995 and a continuation-in-part of U.S. Ser. No. 651,290, now U.S. Pat. No. 5,728,855, filed May 22, 1996.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5066631 |
Sangokoya et al. |
Nov 1991 |
|
5480848 |
Geerts |
Jan 1996 |
|
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
576892 |
Dec 1995 |
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