A new class of zirconocene catalysts for the syndiospecific polymerization of propylene and its modification for varying polypropylene from isotactic to syndiotactic

Journal of the American Chemical Society

Volumn 118, Issue 47, 1996, Pages 11988-11989

  Herzog, Timothy A ^a   Zubris, Deanna L ^a   Bercaw, John E ^a  

^a CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

POLYPROPYLENE;

ARTICLE; CATALYSIS; DRUG SYNTHESIS; POLYMERIZATION; REACTION ANALYSIS; STEREOCHEMISTRY;

EID: 0029954535     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja962413z     Document Type: Article

References (26)

1. For recent reviews and leading references, see: (a) Brintzinger, H. H.; Fischer, D.; Mulhaupt, R.; Rieger, B.; Waymouth, R. M. Angew. Chem., Intl. Ed. Engl. 1995, 34, 1143. (b) Bochmann, M. J. Chem. Soc., Dalton Trans. 1996, 255.
2. For recent reviews and leading references, see: (a) Brintzinger, H. H.; Fischer, D.; Mulhaupt, R.; Rieger, B.; Waymouth, R. M. Angew. Chem., Intl. Ed. Engl. 1995, 34, 1143. (b) Bochmann, M. J. Chem. Soc., Dalton Trans. 1996, 255.
3. (a) Ewen, J. A.; Jones, R. L.; Razavi, A.; Ferrara, J. D. J. Am. Chem. Soc: 1988, 110, 6255.
4. (b) Patsidis, K.; Alt, H. G.; Milius, W.; Palackal, S. J. J. Organomet. Chem. 1996, 509, 63.
5. (c) Shiomura, T.; Kohno, M.; Inoue, N.; Yokote, Y.; Akiyama, M.; Asanuma, T.; Sugimoto, R.; Kimura, S.; Abe, M. Stud. Surf. Sci. Catal. 1994, 89, 326.
6. (d) Razavi, A.; Atwood, J. L. J. Organomet. Chem. 1993, 459, 117.
7. (e) Winter, J.; Rohrmann, M.; Dolle, V.; Spaleck, W. Eur. Pat. Appl. 0,387,690 and 0,387,691, 1991.
8. (f) Spaleck, W.; Aulbach, M.; Bachmann, B.; Küber, F.; Winter, A. Macromol. Symp. 1995, 89, 237-247.
9. (g) Ewen, J. A. Macromol. Symp. 1995, 89, 181-196.
10. Henling L. M.; Herzog, T. A.; Bercaw, J. E. Acta Crystallogr. Submitted.
11. (a) Longo, P.: Grassi, A.; Pellechi, C.; Zambelli, A. Macromolecules 1987, 20, 1015.
12. (b) Pino, P.; Galimberti, M. J. Organomet. Chem. 1989, 370, 1.
13. (c) Gilchrist, J. C.; Bercaw, J. E. J. Am. Chem. Soc. In press.
14. (a) Piers, W. E.; Bercaw, J. E. J. Am. Chem. Soc. 1990, 112, 9406-9407.
15. (b) Brintzinger, H. H.; Krauledat, H. Angew, Chem., Int. Ed. Engl. 1990, 29, 1412.
16. (c) Brintzinger, H. H.; Leclerc, M. J. Am. Chem. Soc., 1995, 117, 1651.
17. (d) Burger, B. J.; Cotter, W. D.; Coughlin, E. B.; Chacon, S. T.; Hajela, S.; Herzog, T. A.; Kühn, R. O.; Mitchell, J. P.; Piers, W. E.; Shapiro, P. J.; Bercaw, J. E. In Ziegler Catalysts; Fink, G., Mülhaupt, R., Brintzinger, H. H., Eds.; Springer: Berlin, 1995.
18. (e) Grubbs, R. H.; Coates, G. W. Acc. Chem. Res. 1996, 29, 85.
19. Calculations are in agreement with this overall transition structure: Cavallo, L.; Guerra, G.; Vacatello, M.; Corradini, P. Macromolecules 1991, 24, 1784.
20. (a) Clark, T. J.; Killian, C. M.; Luthra, S.; Nile, T. A. J. Organomet. Chem. 1993, 462, 247.
21. (b) Cano, A.; Cuenca, T.; Gomez-Sal, P.; Royo, B.; Royo, P. Organometallics 1994, 13, 1688-1694.
22. (c) Lang, H.; Blau, S.; Muth, A.; Weiss, K.; Neugenauer, U. J. Organomel. Chem. 1995, 490, C32.
23. (d) Mengele, W.; Diebold, J.; Troll, C.; Roll, W.; Brintzinger, H. H. Organometallics 1993, 12, 1931-1935.
24. (e) Diamond, G. M.; Rodewald, S.; Jordan, R. F. Organometallics 1995, 14, 5.
25. (f) Christopher, J. N.; Diamond, G. M.; Jordan, R. F. Abstracts of Papers 210th National Meeting of the American Chemical Society, Chicago, Illinois, Fall 1995; American Chemical Society: Washington, DC, 1995; INOR310.
26. 2 with 300 equiv of MAO yielded 30 300 g of PP/g of catalyst/h with [r] content of 92.6%.