Claims
- 1. A process for the polymerization of an olefin, comprising the step of contacting, under polymerization conditions, said olefin with an olefin coordination polymerization catalyst comprising a complex of a Group 8 to Group 10 metal, wherein an oxidizing agent is present during at least a portion of said contacting.
- 2. The process of claim 1, wherein the metal is selected from the group consisting of Ni, Pd, Fe and Co.
- 3. The process of claim 2, wherein the metal is Ni.
- 4. The process of claim 1, wherein the catalyst comprises a complex of the metal with an organic ligand.
- 5. The process of claim 4, wherein the organic ligand is of the formula (I)
- 6. The process of claim 1, wherein a cocatalyst is present.
- 7. The process of claim 1, wherein the oxidizing agent is added essentially continuously during said process.
- 8. The process of claim 1, wherein said oxidizing agent is selected from the group consisting of iodine and an active halocarbon.
- 9. The process of claim 1, wherein said oxidizing agent is iodine.
- 10. The process of claim 1, wherein said oxidizing agent is
- 11. The process of claim 9, wherein said oxidizing agent is
- 12. The process of claim 1, wherein said oxidizing agent is trichlorotoluene.
- 13. The process of claim 8, wherein the catalyst comprises a complex of the metal with an organic ligand of the formula (I)
- 14. The process of claim 13, wherein a cocatalyst is present.
- 15. The process of claim 13, wherein the oxidizing agent is added essentially continuously during said process.
- 16. The process of claim 13, wherein the metal is Ni.
- 17. An improved process for the polymerization of an olefin in which said olefin is contacted, under polymerization conditions, with an olefin coordination polymerization catalyst comprising a complex of a Group 8 through a Group 10 metal, wherein the improvement comprises contacting said polymerization catalyst and olefin in the presence of an oxidizing agent.
- 18. The improved process of claim 17, wherein the metal is selected from the group consisting of Ni, Pd, Fe and Co.
- 19. The improved process of claim 17, wherein the metal is Ni.
- 20. The improved process of claim 17, wherein the catalyst comprises a complex of the metal with an organic ligand.
- 21. The improved process of claim 20, wherein the organic ligand is of the formula (I)
- 22. The improved process of claim 17, wherein a cocatalyst is present.
- 23. The improved process of claim 17, wherein the oxidizing agent is added essentially continuously during said process.
- 24. The improved process of claim 17, wherein said oxidizing agent is selected from the group consisting of iodine and an active halocarbon.
- 25. The improved process of claim 17, wherein said oxidizing agent is iodine.
- 26. The improved process of claim 17, wherein said oxidizing agent is
- 27. The improved process of claim 26, wherein said oxidizing agent is
- 28. The improved process of claim 17, wherein said oxidizing agent is trichlorotoluene.
- 29. The improved process of claim 24, wherein the catalyst comprises a complex of the metal with an organic ligand of the formula (I)
- 30. The improved process of claim 29, wherein a cocatalyst is present.
- 31. The improved process of claim 29, wherein the oxidizing agent is added essentially continuously during said process.
- 32. The improved process of claim 29, wherein the metal is Ni.
- 33. A process for improving the productivity of an olefin coordination polymerization catalyst comprising a complex of a Group 8 to Group 10 metal, in a process for producing a polyolefin by contacting an olefin with said polymerization catalyst under conditions to polymerize said olefin, said process comprising the step of contacting said olefin and said polymerization catalyst in the presence of an oxidizing agent.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority under 35 U.S.C. §119 from U.S. Provisional Application Ser. No. 60/188,660 (filed Mar. 10, 2000), which is incorporated by reference herein for all purposes as if fully set forth.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60188660 |
Mar 2000 |
US |