Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1993-08-27
1995-10-17
Pal, Asok
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502103, 526160, B01J 3100, C08F 464
Patent
active
054591171
ABSTRACT:
Isospecific and/or syndiospecific catalysts and processes for the propagation or an isotactic and/or syndiotactic polymer chain derived from an ethylenically unsaturated monomer which contains 3 or more carbon atoms or is a substituted vinyl compound. The catalysts comprise a double-conformationally locked metallocene and/or metallocene cation catalysts, characterized by having sterically dissimilar substituents such that the catalysts have overall either C.sub.s or C.sub.2 (or pseudo-C.sub.s or C.sub.2) symmetrically distributed. Methods are also described for the preparation and use of these unique catalysts.
REFERENCES:
patent: 3258455 (1966-06-01), Natta et al.
patent: 3305538 (1967-02-01), Natta et al.
patent: 3364190 (1968-01-01), Emkrick
patent: 3893989 (1975-07-01), Leicht et al.
patent: 4200171 (1980-04-01), Seymour et al.
patent: 4287328 (1981-09-01), Kikuta et al.
patent: 4316966 (1982-02-01), Mineshima et al.
patent: 4530914 (1985-07-01), Ewen et al.
patent: 4794096 (1988-12-01), Ewen
patent: 4852851 (1989-08-01), Webster
patent: 4874734 (1989-10-01), Kioka et al.
patent: 4892851 (1990-01-01), Ewen et al.
patent: 4935474 (1990-06-01), Ewen et al.
patent: 4975403 (1990-12-01), Ewen
patent: 5017714 (1991-05-01), Welborn
patent: 5036034 (1991-07-01), Ewen
patent: 5120867 (1992-06-01), Welborn
patent: 5122583 (1992-06-01), Ewen et al.
patent: 5132262 (1992-07-01), Rieger et al.
patent: 5155080 (1992-10-01), Elder et al.
patent: 5225500 (1993-07-01), Elder et al.
patent: 5234878 (1993-08-01), Tsutsui et al.
patent: 5296434 (1994-03-01), Karl et al.
Spaleck, W.; Antberg, M.; Rohrmann, J.; Winter, A.; Bachmann, B.; Kiprof, P.; Behm, J.; Herrmann, W. J.; Angew. Chem. Int. Ed. Engl., 1992, 31, 1347.
Mallin, D. T., Rausch, M. D.; Lin, Y. G.; Dong, S. H.; Chien, J. C. W., J. Am. Chem. Soc., 1990, 112, 2030.
Jordan, R. F.; Dasher, W. E.; Echols, S. F., J. Amer. Chem. Soc., 1986, 108, 1718.
Eisch, J. J.; Piotrowski, A. M.; Brownstein, S. K.; Gabe, E. J.; Lee, F. L., J. Amer. Chem. Soc., 1985, 107, 7219.
Ewen, J. A.; Jones, R. L.: Razavi A.; Ferrara, J. D., J. Amer. Chem. Soc., 1988, 110, 6255.
Ewen, J. A., J. Amer. Chem. Soc., 1984, 106, 6356.
Marks, T. J., Organometallics, 1988, 7, 1828.
Skattebol, L., Tetrahedron Letters No. 53, pp. 4659-4662 (1969) and Journal of Organic Chemistry 29, 2951 (1964).
Marks, et al., in Yang, X.; Stern, C. L.; Marks, T. J.; J. Am Chem. Soc. 1991, 113, 3623.
Zambelli, A. et al., "Isotatic Polymerization of Propene: Homogeneous Catalysts Based on Group 4 Metallocenes Without Methylaluminoxane," Macromolecules 1989, 22, pp. 2186-2189.
Farina, M.; Di Silvestro, G.; Sozzani, P., Macromolecules, 1982, 15, 1451.
Besancon, J.; Top, S., J. Organomet. Chem., 1977, 127, 139.
Ewen, J. A., "Ligand Effects On Metallocene Catalyzed Ziegler-Natta Polymerizations," pp. 271-292.
Coughlin, E. B.; Bercaw, J. E. J. Amer. Chem. Soc., 1992, 114, 7606.
Hortmann, K.; Brintzinger, H. H., New J. Chem., 1992, 16, 51.
Aggarwal, M.; Geanangel, R. A.; Ghuman, M. A., Main Group Metal Chemistry, 1991, 14, 263.
Halterman, R. L., Chem. Rev., 1992, 92, 965.
Skatterbol, L. Tetrahedron, 1967, 23, 1107.
Ewen, J. A.; Elder M. J.: Jones, R. L.: Curtis S.; Cheng H. N., in Catalytic Olefin Polymerization; Keii, T.; Soga K.; Eds.; 23-25 Oct. 1989, Elsevier, New York, 1990, p. 439.
Ewen, J. A.; Elder, M. J.; Jones, R. L.; Haspeslagh, L.; Atwood, J. L.; Bott, S. G.; Robinson, K., Makromol. Chem. Macromol. Symp., 1993, 49/49, 253.
Ewen, J. A.; Haspeslagh, K.; Elder, M. J.; Atwood, J.; Zhang, H.; Cheng, H. N., in Olefin Polymerization; Kaminsky, W.; Sinn, H.; Eds.; 21-24, Sep. 1987, Springer-Verlag, New York, 1988, p. 271.
LandOfFree
Doubly-conformationally locked, stereorigid catalysts for the pr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Doubly-conformationally locked, stereorigid catalysts for the pr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Doubly-conformationally locked, stereorigid catalysts for the pr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-597255