Metal complexes of iminohydroxamic acids

Details Metal complexes of iminohydroxamic acids Metal complexes of iminohydroxamic acids

2005-01-25

2005-01-25

Harlan, Robert D. (Department: 1713)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

C502S167000, C526S129000, C526S161000, C526S171000, C526S172000, C526S346000, C526S348000, C526S905000

Reexamination Certificate

active

06846771

ABSTRACT:
Complexes of the formulae Ia and Ibwhere M=Ti, Zr, Hf, V, Nb, Ta, Cr, Ni, Pd, can be used for the polymerization and copolymerization of olefins, for example in suspension polymerization processes, gas-phase polymerization processes and bulk polymerization processes.

REFERENCES:
patent: 0 874 005 (1998-10-01), None
patent: WO 9623010 (1996-08-01), None
patent: WO 9827124 (1998-06-01), None
H. H. Brintzinger, et al., Angew. Chem. Int. Ed. Engl., vol. 34, pp. 1143-1170, “Stereospecific Olefin Polymerization with Chiral Metallocene Catalysts”, 1995.
G. J. P. Britovsek, et al., Angew. Chem. Int. Ed., vol. 38, pp. 428-447, “The Search for New Generation Olefin Polymerization Catalysts: Life Beyond Metallocenes”, 1999.
X. Bei, et al., Organometallics, vol. 16, pp. 3282-3302, “Synthesis, Structures, Bonding, and Ethylene Reactivitiy of Group 4 Metal Alkyl Complexes Incorporating 8-Quinolinolato Ligands”, 1997.
T. Tsukahara, et al., Organometallics, vol. 16, pp. 3303-3313, “Neutral and Cationic Zirconium Benzyl Complexes Containing Bidentate Pyridine-Alkoxide Ligands. Synthesis and Olefin Polymerization Chemistry of (pyCR2O)2Zr(CH2Ph)2and (pyCR2O)2Zr(CH2Ph)♦ Complexes” 1997.
I. Kim, et al., Organometallics, vol. 16, pp. 3314-3323. “Synthesis, Structures, Dynamics, and Olefin Polymerization Behavior of Group 4 Metal (pyCar2O)2M(NR2)2Complexes Containing Bidentate Pyridine-Alkoxide Ancillary Ligands”, 1997.
L. H. Briggs, et al., Aust. J. Chem., vol. 29, pp. 357-366, “Some Hydroxyamidines and Amidoximes”, 1976.

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