Claims
- 1. A method which comprises polymerizing an olefin in the presence of a catalyst comprising:(a) a compound of the formula: wherein M is a Group 3-10 transition metal; A is O, S, N—R″, or P—R″; L is an anionic ligand; X is hydride, halide, C1-C20 alkoxy, siloxy, hydrocarbyl, or dialkylamido; R, R′, and R″, which are the same or different, are selected from the group consisting of hydrogen and C1-C20 hydrocarbyl; and m+n equals the valency of M minus 1; and (b) an activator.
- 2. The method of claim 1 wherein the olefin is ethylene or a mixture of ethylene and another olefin.
- 3. The method of claim 1 wherein L is a cyclopentadienyl, boraaryl, pyrrolyl, azaborolinyl, quinolinyl, or pyridinyl group, or is another amine derivative of the formula:RR′N—A− or RR′C═N—A−.
- 4. The method of claim 1 wherein M is a transition metal of Groups 4 to 6.
- 5. The method of claim 4 wherein M is a Group 4 transition metal.
- 6. The method of claim 1 wherein the activator is an alumoxane.
- 7. The method of claim 6 wherein the activator further comprises a trialkyl or triaryl aluminum compound.
- 8. The method of claim 1 wherein the activator is a trialkyl or triaryl boron compound or an ionic borate.
- 9. The method of claim 1 wherein the catalyst is supported.
- 10. A method which comprises polymerizing an olefin in the presence of a catalyst comprising:(a) a compound of the formula: wherein M is a Group 4-6 transition metal; L is an anionic ligand; X is hydride, halide, methyl, phenyl, benzyl, neopentyl, or a C1-C20 alkoxy, siloxy, or dialkylamido; R, R′, and R″, which are the same or different, are selected from the group consisting of hydrogen and C1-C20 hydrocarbyl; and m+n equals the valency of M minus 1; and (b) an activator.
- 11. The method of claim 10 wherein the olefin is ethylene or a mixture of ethylene and another olefin.
- 12. The method of claim 10 wherein L is a cyclopentadienyl, boraaryl, pyrrolyl, azaborolinyl, quinolinyl, or pyridinyl group, or is another amine derivative of the formula:RR′N—A− or RR′C═N—A−.
- 13. The method of claim 10 wherein M is a Group 4 transition metal.
- 14. The method of claim 10 wherein the activator is an alumoxane.
- 15. The method of claim 14 wherein the activator further comprises a trialkyl or triaryl aluminum compound.
- 16. The method of claim 10 wherein the activator is a trialkyl or triaryl boron compound or an ionic borate.
- 17. The method of claim 10 wherein the catalyst is supported.
- 18. A method which comprises polymerizing an olefin in the presence of a catalyst comprising:(a) a compound of the formula: wherein M is a Group 3-10 transition metal; A is O, S, N—R″, or P—R″; L is an anionic ligand; X is hydride, halide, C1-C20 alkoxy, siloxy, hydrocarbyl, or dialkylamido; R, R′, and R″, which are the same or different, are selected from the group consisting of hydrogen and C1-C20 hydrocarbyl; and m+n equals the valency of M minus 1; and (b) an activator.
- 19. The method of claim 18 wherein the olefin is ethylene or a mixture of ethylene and another olefin.
- 20. The method of claim 18 wherein L is a cyclopentadienyl, boraaryl, pyrrolyl, azaborolinyl, quinolinyl, pyridinyl group or another amine derivative of the formula:RR′C═N—A−
Parent Case Info
This is a division of Appl. Ser. No. 09/292,369, filed Apr. 15, 1999 now U.S. Pat. No. 6,204,216.
US Referenced Citations (16)
Foreign Referenced Citations (1)
Number |
Date |
Country |
WO 9634021 |
Oct 1996 |
WO |
Non-Patent Literature Citations (1)
Entry |
David L. Hughes, Manuel Jimenez-Tenorio, G. Jeffery Leigh, and David G. Walker; “The Chemistry of Dinitrogen Residues. Part 7. †Hydrazido (1—)- and N,N-Dimethylhydroxylaminato (1—)- Complexes of Titanium (IV)” ‡J. Chem. Soc. Dalton Trans. 1989, pp. 2389-2395. |