meso- and rac-diastereomers of 1- and 2-tert-butyldimethylsiloxy-substituted ethylenebis(indenyl)zirconium dichlorides for formation of short- and long-chain branched polyethene

Macromolecules

Volumn 33, Issue 25, 2000, Pages 9200-9204

  Kokko, Esa ^a   Lehmus, Petri ^a   Leino, Reko ^b   Luttikhedde, Hendrik J G ^b   Ekholm, Peter ^b   Näsman, Jan H ^b   Seppälä, Jukka V ^a  

^a AALTO UNIVERSITY   (Finland)

^b ÅBO AKADEMI UNIVERSITY   (Finland)

Author keywords

[No Author keywords available]

Indexed keywords

COMPOSITION EFFECTS; COPOLYMERIZATION; HOMOPOLYMERIZATION; MASS SPECTROMETERS; MOLECULAR WEIGHT; MONOMERS; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; RHEOLOGY; SUBSTITUTION REACTIONS; TOLUENE;

BUTYLDIMETHYLSILOXY; DIASTEREOMERS; ETHYLENEBISDINDENYL ZIRCONIUM DICHLORIDES; LONG CHAIN BRANCHING; METHYLALUMINOXANE;

POLYETHYLENES;

EID: 0034507115     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma000872l     Document Type: Article

References (42)

1. Britovsek, G. J. P.; Gibson, V. C.; Wass, D. F. Angew. Chem., Int. Ed. Engl. 1999, 38, 428-447.
2. Ittel, S. D.; Johnson, L. K.; Brookhart, M. Chem. Rev. 2000, 100, 1169-1204.
3. Resconi, L.; Cavallo, L.; Fait, A.; Piemontesi, F. Chem. Rev. 2000, 100, 1253-1346.
4. Leino, R.; Luttikhedde, H.; Wilén, C.-E.; Sillanpää, R.; Näsman, J. H. Organometallics 1996, 15, 2450-2453.
5. Luttikhedde, H. J. G.; Leino, R.; Lehtonen, A.; Näsman, J. H. J. Organomet. Chem. 1998, 555, 127-134.
6. Leino, R.; Luttikhedde, H. J. G.; Lehtonen, A.; Ekholm, P.; Näsman, J. H. J. Organomet. Chem. 1998, 558, 181-188.
7. Leino, R.; Luttikhedde, H. J. G.; Lehmus, P.; Wilén, C.-E.; Sjöholm, R.; Lehtonen, A.; Seppälä, J. V.; Näsman, J. H. Macromolecules 1997, 30, 3477-3483.
8. Lehmus, P.; Kokko, E.; Härkki, O.; Leino, R.; Luttikhedde, H.; Näsman, J. H.; Seppälä, J. V. Macromolecules 1999, 32, 3547-3552.
9. Collins, S.; Gauthier, W. J.; Holden, D. A.; Kuntz, B. A.; Taylor, N. J.; Ward, D. G. Organometallics 1991, 10, 2061-2068.
10. Spaleck, W.; Aulbach, M.; Bachmann, B.; Küber, F.; Winter, A. Macromol Symp. 1995, 89, 237-247.
11. Resconi, L.; Piemontesi, F.; Camurati, I.; Balboni, D.; Sironi, A.; Moret, M.; Rychlicki, H.; Zeigler, R. Organometallics 1996, 15, 5046-5059.
12. Maciejewski Petoff, J. L.; Agoston, T.; Lal, T. K.; Waymouth, R. M. J. Am. Chem. Soc. 1998, 120, 11316-11322.
13. Vathauer, M.; Kaminsky, W. Macromolecules 2000, 33, 1955-1959.
14. Leclerc, M. K.; Waymouth, R. M. Angew. Chem., Int. Ed. Engl. 1998, 37, 922-925.
15. Arndt, M.; Kaminsky, W.; Schauwienold, A.-M.; Weingarten, U. Macromol. Chem. Phys. 1998, 199, 1135-1152.
16. Jin, J.; Uozumi, T.; Sano, T.; Teranishi, T.; Soga, K.; Shiono, T. Macromol. Rapid Commun. 1998, 19, 337-339.
17. Uozumi, T.; Miyazawa, K.; Sano, T.; Soga, K. Macromol. Rapid Commun. 1997, 18, 883-889.
18. Izzo, L.; Caporaso, L.; Senatore, G.; Oliva, L. Macromolecules 1999, 32, 6913-6916.
19. Kokko, E.; Malmberg, A.; Lehmus, P.; Löfgren, B.; Seppälä, J. V. J. Polym. Sci., Part A: Polym. Chem. 2000, 38, 376-388.
20. Piemontesi, F.; Camurati, I.; Resconi, L.; Balboni, D.; Sironi, A.; Moret, M.; Zeigler, R.; Piccolrovazzi, N. Organometallics 1995, 14, 1256-1266.
21. Luttikhedde, H. J. G.; Leino, R.; Ahlgrén, M. J.; Pakkanen, T. A.; Näsman, J. H. J. Organomet. Chem. 1998, 558, 227-230.
22. Thorshaug, K.; Støvneng, J. A.; Rytter, E.; Ystenes, M. Macromolecules 1998, 31, 7149-7165.
23. Siedle, A. R.; Lamanna, W. M.; Newmark, R. A.; Schroepfer, J. N. J. Mol. Catal. A: Chem. 1998, 128, 257-271.
24. Karol, F. J.; Kao, S.-C.; Wasserman, E. P.; Brady, R. C. New J. Chem. 1997, 21, 797-805.
25. Wasserman, E.; Hsi, E.; Young, W.-T. Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.) 1998, 39 (2), 425-426.
26. Randall, J. C. Characterization of Long-Chain Branching in Polyethylenes Using High-Field Carbon-13 NMR. In Polymer Characterization by ESR and NMR; ACS Symp. Ser. Vol. 142; Woodward, A. E., Bovey, F. A., Eds.; American Chemical Society: Washington, DC, 1980; pp 93-118.
27. De Pooter, M.; Smith, P. B.; Dohrer, K. K.; Bennett, K. F.; Meadows, M. D.; Smith, C. G.; Schouwenaars, H. P.; Geerards, R. A. J. Appl. Polym. Sci. 1991, 42, 399-408.
28. Malmberg, A.; Kokko, E.; Lehmus, P.; Löfgren, B.; Seppälä, J. V. Macromolecules 1998, 31, 8448-8454.
29. Wang, W.-J.; Yan, D.; Zhu, S.; Hamielec, A. E. Macromolecules 1998, 31, 8677-8683.
30. Harrell, E. R.; Nakajima, N. J. Appl. Polym. Sci. 1984, 29, 995-1010.
31. Bersted, B. H. J. Appl. Polym. Sci. 1985, 30, 3751-3765.
32. Carella, J. M.; Gotro, J. T.; Graessley, W. W. Macromolecules 1986, 19, 659-667.
33. Vega, J. F.; Santamaría, A.; Muñoz-Escalona, A.; Lafuente, P. Macromolecules 1998, 31, 3639-3647.
34. 0 of four examined samples was even higher at still lower frequency (η* < 0.02 rad/s) since the Newtonian viscosity range was not yet reached.
35. Raju, V. R.; Smith, G. G.; Marin, G.; Knox, J. R.; Graessley, W. W. J. Polym. Sci., Polym. Phys. Ed. 1979, 17, 1183-1195.
36. An increase in the ethene concentration in polymerization medium decreased branching in the obtained polymer.
37. Soares, J. B. P.; Hamielec, A. E. Macromol. Theory Simul. 1996, 5, 547-572.
38. Malmberg, A.; Liimatta, J.; Lehtinen, A.; Löfgren, B. Macromolecules 1999, 32, 6687-6696.
39. Kolodka, E.; Wang, W.-J.; Charpentier, P. A.; Zhu, S.; Hamielec, A. E. Polymer 2000, 41, 3985-3991.
40. 4] = 0.12 M was 1:18. In the corresponding copolymer the ratio was 1:4, suggesting that the increased amount of trans-vinylenes was caused by comonomer 2,1-insertion.
41. Suhm, J.; Schneider, M. J.; Mülhaupt, R. J. Mol. Catal. A: Chem. 1998, 128, 215-227.
42. Leino, R.; Luttikhedde, H. J. G. In Olefin Polymerization: Emerging Frontiers; ACS Symp. Ser. Vol. 749; Arjunan, P., McGrath, J. E., Hanlon, T. L., Eds.; American Chemical Society: Washington, DC, 2000; pp 31-47.