Claims
- 1. An unbridged metallocene of a transition metal selected from the group consisting of zirconium, titanium, and hafnium having two substituted indenyl groups,one indenyl group being substituted in the 2 position by an aromatic substituent selected from phenyl and phenyl alkyl radicals in which there are 1 to 3 carbon atoms between the phenyl group and the indenyl group, and the other indenyl group is substituted in either the 1 position or 2 position by a non-aromatic substituent selected from alkyl groups having 2 to 6 carbon atoms and terminally unsaturated alkene groups having 2 to 6 carbon atoms.
- 2. A metallocene according to claim 1 wherein the transition metal is zirconium.
- 3. A metallocene according to claim 2 wherein 1-indenyl is substituted by a terminally unsaturated alkenyl radical.
- 4. A metallocene according to claim 3 wherein the phenyl alkyl group is phenyl ethyl.
- 5. A metallocene according to claim 4 wherein the alkenyl group is 4-pentenyl.
- 6. A metallocene according to claim 3 wherein the alkenyl group is 3-butenyl.
- 7. A metallocene according to claim 3 wherein the phenyl alkyl group is phenyl methyl.
- 8. A metallocene according to claim 7 having an indenyl group substituted in the 1 position by 4-pentenyl.
- 9. A metallocene according to claim 7 having an indenyl group substituted in the 1 position by 5-hexenyl.
- 10. A metallocene according to claim 2 having an indenyl group substituted by phenyl methyl.
- 11. A metallocene according to claim 10 having an indenyl group substituted in the 2 position by an alkyl substituent.
- 12. A metallocene according to claim 11 having an indenyl group substituted in the 2 position by 1-pentyl.
- 13. A metallocene according to claim 2 having an indenyl group substituted by phenyl ethyl.
- 14. A metallocene according to claim 13 having an indenyl group substituted in the 2 position by an alkyl group.
- 15. A metallocene according to claim 14 having an indenyl substituted in the 2 position by an alkyl group having 5 to 6 carbon atoms.
- 16. A process for polymerizing an olefin comprising contacting the olefin under suitable polymerization conditions with a metallocene according to claim 1 and a suitable cocatalyst.
- 17. A process according to claim 14 wherein ethylene is polymerized.
- 18. A process according to claim 16 wherein propylene is polymerized.
- 19. A process according to claim 18 wherein said metallocene is selected from the group consisting of (2-phenylethyl indenyl) (2-n-pentylindenyl) zirconium dichloride and (2-phenylethyl indenyl) (2-n-hexylindenyl) zirconium dichloride.
Parent Case Info
This application is related to Provisional Application Ser. No. 60/149,135, filed Aug. 16, 1999, the disclosure of which is incorporated herein by reference.
US Referenced Citations (9)
Number |
Name |
Date |
Kind |
5071808 |
Antberg et al. |
Dec 1991 |
A |
5223467 |
Razavi |
Jun 1993 |
A |
5594080 |
Waymouth et al. |
Jan 1997 |
A |
5646322 |
van Beek et al. |
Jul 1997 |
A |
5719241 |
Razavi et al. |
Feb 1998 |
A |
5780659 |
Schmidt et al. |
Jul 1998 |
A |
5854363 |
Jung et al. |
Dec 1998 |
A |
5886202 |
Jung et al. |
Mar 1999 |
A |
6291699 |
Birmingham et al. |
Sep 2001 |
B1 |
Foreign Referenced Citations (1)
Number |
Date |
Country |
372 414 |
Dec 1989 |
EP |
Non-Patent Literature Citations (2)
Entry |
Licht, E.H.; Alt, H.G.; Karim, M.M. J. Organomet. Chem. 2000, 599, 275.* |
Kravchenko, R.; Masood, A.; Waymouth, R.M. Organometallics 1997, 16, 3635. |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/149135 |
Aug 1999 |
US |