Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-01-11
2005-01-11
Bell, Mark L. (Department: 1755)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C548S101000
Reexamination Certificate
active
06841676
ABSTRACT:
Novel compounds are provided which are useful as catalysts, particularly in the polymerization of addition polymerizable monomers such as olefinic or vinyl monomers. The compounds are complexes of a mid-transition metal coordinated to at least two ligands, at least one of which is an unsaturated nitrogenous ligand. Depending on ligand substitution, stereospecific catalysts can be provided, including isospecific catalysts and syndiospecific catalysts. Catalyst systems containing the novel compounds in combination with a catalyst activator are provided as well, as are methods of using the novel compounds in the preparation of polyolefins. One embodiment of the present invention is a compound having the formula L1[MQ1Q2]L2in which M is Nb, Ta, Mo, W, Mn or Re, Q1and Q2are each a univalent substituent, and L1and L2are ligands coordinated to M, wherein L1contains a first coordinating nitrogen atom within a C═N group, and a second coordinating atom that is either a second nitrogen atom, optionally present in a second C═N group, or an oxygen, sulfur or phosphorus atom. The L2group contains a coordinating atom that is either a second nitrogen atom, optionally within a C═N group, or a sulfur or phosphorus atom.
REFERENCES:
patent: 3691095 (1972-09-01), Kroll et al.
patent: 4954420 (1990-09-01), Maeda et al.
patent: 5459117 (1995-10-01), Ewen
patent: 5557023 (1996-09-01), Somogyvari et al.
patent: 5852146 (1998-12-01), Reichle et al.
patent: 5866663 (1999-02-01), Brookhart et al.
patent: 6162884 (2000-12-01), Alt et al.
patent: 6214761 (2001-04-01), Bennett
patent: 6451728 (2002-09-01), Matsui et al.
patent: 6534201 (2003-03-01), Kim et al.
patent: 6605200 (2003-08-01), Mao et al.
patent: 6605201 (2003-08-01), Mao et al.
patent: 6676816 (2004-01-01), Mao et al.
patent: 0416815 (1991-03-01), None
patent: 0874005 (1998-10-01), None
patent: 1008595 (2000-06-01), None
patent: WO 9745434 (1997-12-01), None
patent: WO 9803521 (1998-01-01), None
patent: WO 9827124 (1998-06-01), None
patent: WO 9830612 (1998-07-01), None
patent: WO 9849208 (1998-11-01), None
Farahbakhsh et al. (1997), “Thio-Ligation to Vanadium: TheNSSNandS′ N′ ODonor Sets(N=Pyridine, N′=Enamine; S=Thioether, S′=Thiolate),”Chem. Ber./Recl. 130(8):1129-1133.
Feldman et al. (1997), “Electrophilic Metal Precursors and a β-Diimine Ligand for Nickel(II)- and Palladium(II)-Catalyzed Ethylene Polymerization,”Organometallics16(8): 1514-1516.
Gibson et al. (1998), “Chromium(III) Complexes Bearing N,N-Chelate Ligands as Ethene Polymerization Catalysts,”Chem. Commun. 16:1651-1652.
Hancock et al. (1976), “Bis(2,2'-Bipyriadine) and Bis(1,10-phenanthroline) Complexes of Chromium(III) and Cobalt(III),”Acta Chemica Scandinavica A 30(2):79-97.
Horton (1994), “Metallocene Catalysts: Polymers by Design?,”Trends Polym. Sci. 2(5):158-166.
Johnson et al. (1995), “New Pd(II)-Based Catalysts for Polymerization of Ethylene and α-Olefins,”J. Am. Chem. Soc. 177(23):6414-6415.
Johnson et al. (1996), “Copolymerization of Ethylene and Propylene with Functionalized Vinyl Monomers by Palladium(II) Catalysts,”J. Am. Chem. Soc. 118(1):267-268.
Kim et al. (1998), “[(Ph)2nacnac]MCl2(THF)2(M=Ti, V, Cr): A New Class of Homogeneous Olefin Polymerization Catalysts Featuring β-Diiminate Ligands,”Organometallics 17(21):4541-4543.
Pal et al. (1994), “Dichlorochloro, Dichloro and Trichloro Complexes of Chromium(III) Containing Bidentate, Tridentate and Some Quadridentate Schiff Base Ligands,”J. Bangladesh Chem. Soc. 7(2):126-137 (abstract only).
Vergopoulos et al. (1994), “Oxo and Non-Oxovanadium(IV) Complexes with Oxy-Carboxylate Ligands, and the Structure of VC12(Salen),”Z. Naturforsch., B: Chem Sci. 49(8):1127-1136 (abstract only).
Weidenbruch et al. (1993), “L Reaktionen von Silylenen und Disilenen mit 2,2′-Bipyridyl, Pyridin-2-aldiminen und α-Ketoiminen: Cycloadditionen versus C-H-Insertion,”Journal of Organometallic Chemistry 454:35-43.
Westland et al. (1973), “Reactions of Halocarbonyls of Group VIb Elements. II. Complexes of Molybdenum and Tungsten Containing Group Va Donors or Phenyl Isocyanide,”Inorganic Chemistry 12(10):2356-2361.
Zuech (1972), “Polymerizations with Homogeneous Chromium Catalysts,”Journal of Polymer Science: Polymer Chemistry Edition 10:3665-3672.
Tagge Christopher D.
Wilson Jr. Robert B.
Bell Mark L.
Pasterczyk J.
Reed Dianne E.
SRI - International
Warzel Mark L.
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