Synthesis and characterization of a silyl substituted bis(indenyl) zirconium dichloride and comparison of its olefin polymerization behavior to a siloxy substituted analogue

Journal of Polymer Science, Part A: Polymer Chemistry

Volumn 39, Issue 1, 2001, Pages 127-133

  Ekholm, Peter ^a   Lehmus, Petri ^b,d   Kokko, Esa ^b   Haukka, Matti ^c   Seppälä, Jukka V ^b   Wilén, Carl Eric ^a  

^a ÅBO AKADEMI UNIVERSITY   (Finland)

^b AALTO UNIVERSITY   (Finland)

^c UNIVERSITY OF EASTERN FINLAND   (Finland)

^d BOREALIS POLYMERS OY   (Finland)

Author keywords

[No Author keywords available]

Indexed keywords

CHARACTERIZATION; MONOMERS; OLEFINS; SUBSTITUTION REACTIONS; SYNTHESIS (CHEMICAL); ZIRCONIUM COMPOUNDS;

ANSA-ZIRCONOCENE; HETEROATOM; IDENYL; METALLOCENE; OLEFIN POLYMERIZATION; SILOXY; SILYL; ZIRCONIUM DICHLORIDE;

COPOLYMERIZATION;

EID: 0035148002     PISSN: 0887624X     EISSN: None     Source Type: Journal    
DOI: 10.1002/1099-0518(20010101)39:1<127::AID-POLA140>3.0.CO;2-Z     Document Type: Article

References (23)

1. For recent reviews, see: (a) Brintzinger, H. H.; Fischer, D.; Mülhaupt, R.; Rieger, B.; Waymouth, R. M. Angew Chem Int Ed Engl 1995, 34, 1143.
2. (b) Alt, H. G.; Köppl, A. Chem Rev 2000, 100, 1205.
3. (c) Coates, G. W. Chem Rev 2000, 100, 1223.
4. (d) Resconi, L.; Cavallo, L.; Fait, A.; Piemontesi, F. Chem Rev 2000, 100, 1253.
5. Lee, J.; Gauthier, W. J.; Ball, J.; Iyengar, B.; Collins, S. Organometallics 1992, 11, 2115.
6. Barsties, E.; Schaible, S.; Prosenc, M.-H.; Rief, U.; Röll, W.; Weyand, O.; Dorer, B.; Brintzinger, H.H. J Organomet Chem 1996, 520, 63.
7. Leino, R.; Luttikhedde, H.; Wilén, C.-E.; Sillanpää, R.; Näsman, J. H. Organometallics 1996, 15, 2450.
8. Lehmus, P.; Kokko, E.; Härkki, O.; Leino, R.; Luttikhedde, H. J. G.; Näsman, J. H.; Seppälä, J. V. Macromolecules 1999, 32, 3547.
9. Ewen, J. A.; Jones, R. L.; Elder, M. J.; Rheingold, A. L.; Liable-Sands, L. M. J Am Chem Soc 1998, 120, 10786.
10. Leino, R.; Luttikhedde, H. J. G.; Lehtonen, A.; Ekholm P.; Näsman, J. H. J Organomet Chem 1998, 558, 181.
11. Collins, S.; Kuntz, B. A.; Taylor, N. J.; Ward, D. G. J Organomet Chem 1988, 342, 21.
12. Otwinowski, Z.; Minor, W. In Methods in Enzymology, Volume 276, Macromolecular Crystallography, Part A; Carter, Jr., C. W.; Sweet, R. M. Eds.; Academic Press, 1997; p 307-326.
13. Sheldrick, G. M., SHELXS97, Program for Crystal Structure Determination, University of Göttingen, 1997.
14. Sheldrick, G. M., SHELXL97, Program for Crystal Structure Refinement, University of Göttingen, 1997.
15. -1.To enable direct comparison of the consumption rates in Figure 3 the values obtained at 80 °C were multiplied by 1.5,
16. The induction time is likely to result from unfavorable interactions between excess MAO and the siloxy substituent during formation of the active species. Decreasing the amount of MAO, replacing it partly by triisobutylaluminum, or increasing the temperature were observed to shorten it.
17. Spaleck, W.; Antberg, M.; Aulbach, M.; Bachmann, B.; Dolle, V.; Haftka, S.; Küber, F.; Rohrmann, J.; Winter, A. In Ziegler Catalysts; Fink, G.; Mülhaupt, R.; Brintzinger, H. H., Eds.; Springer Verlag, 1995; p 83-97.
18. The combination of methylene bridging and bulky 3-substitution of bis(indenyl) zirconocenes has been demonstrated to provide cost-effective high-performance catalysts for isospecific propylene polymerization: Resconi, L.; Balboni, D.; Baruzzi, G.; Fiori, C.; Guidotti, S. Organometallics 2000, 19, 420.
19. (a) Thorshaug, K.; Rytter, E.; Ystenes, M. Macromol Rapid Commun 1997, 18, 715.
20. (b) Thorshaug, K.; Støvneng, J. A.; Rytter, E.; Ystenes, M. Macromolecules, 1998, 31, 7149.
21. (a) Resconi, L.; Camurati, I.; Sudmeijer, O. Topics in Catalysis 1999, 7, 145.
22. (b) Resconi, L. J Mol Catal A 1999, 146, 167.
23. -1 decreased for 4MAO at 80 °C yield and comonomer incorporation by 90% and 20%, respectively.