Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2008-05-13
2008-05-13
Lu, Caixia (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S133000, C526S134000, C526S161000, C526S165000, C526S169100, C502S103000, C502S167000
Reexamination Certificate
active
07371803
ABSTRACT:
This invention relates to a transition metal catalyst compound represented by the formula: LMX2or (LMX2)2wherein each M is independently a Group 7 to 11 metal, preferably a Group 7, 8, 9, or 10 metal; each L is, independently, a tridentate or tetradentate neutrally charged ligand that is bonded to M by three or four nitrogen atoms, (where at least one of the nitrogen atoms is a central nitrogen atom and at least two of the nitrogen atoms are terminal nitrogen atoms), and at least two terminal nitrogen atoms are substituted with one C3-C50hydrocarbyl and one hydrogen atom or two hydrocarbyls wherein at least one hydrocarbyl is a C3-C50hydrocarbyl, and the central nitrogen atom is bonded to three different carbon atoms or two different carbon atoms and one hydrogen atom; X is independently a monoanionic ligand, or two X may join together to form a bidentate dianionic ligand.
REFERENCES:
patent: 4008211 (1977-02-01), Lienhard et al.
patent: 6274684 (2001-08-01), Loveday et al.
patent: 6689848 (2004-02-01), Nagy et al.
patent: 6809058 (2004-10-01), Boffa et al.
patent: 1 476 587 (1967-04-01), None
patent: 99/02472 (1999-01-01), None
patent: 99/12981 (1999-03-01), None
patent: 00/50470 (2000-08-01), None
patent: 01/14391 (2001-03-01), None
patent: 01/83571 (2001-11-01), None
patent: 03/020778 (2003-03-01), None
patent: WO2004/106390 (2004-12-01), None
Kickelbick et al., “Structural Comparison of Cu11complexes in atom transfer radical polymerization”, New Journal of Chemistry, (2002) 26(4), 462-468.
Matyjaszewski et al., “Tridentate Nitrogen-Based Ligands in Cu-Based ATRP: A Structure—Activity Study”, Macromolecules, 2001, 34, 430-440.
Halfpenny et al., “Structural Effects of Chelate Chain Length in High-Spin Nickel(II) Complexes of Triamines”, Inorganica Chimica Acta, 32 (1979) 229-233.
Stabani et al., “Metallomesogens with Branched, Dendrimeric Amino Ligands”, Angewandte Chemie, International Edition in English, (1996) 35(16), 1858-1861.
Britovsek et al., “Imine Versus Amine Donors in Iron-Based Ethylene Polymerisation Catalysts”, European Journal of Inorganic Chemistry, (2001) (2), 431-437.
B. Elvers et al., Ed. Ullmann's Encyclopedia of Industrial Chemistry, vol. A13, VCH Verlagsgesellschaft mbH, Weinheim, 1989, p. 243-247 and 275-276.
B. Cornils et al., Ed., Applied Homogeneous Catalysis with Organometallic Compounds, A Comprehensive Handbook, vol. 1, VCH Verlagsgesellschaft mbH, Weinheim, 1996, p. 245-258.
B. L. Small and M. Brookhart, Iron-Based Catalysts with Exceptionally High Activities and Selectivities for Oligomerization of Ethylene to Linear α-Olefins, J. Am. Chem. Soc. 1998, 120, 7143.
G. J. P. Britovsek, S. P. D. Baugh, O. Hoarau, V. C. Gibson, D. F. Wass, A. J. P. White, D. J. Williams, The Role of Bulky Substituents in the Polymerization of Ethylene Using Late Transition Metal Catalysts: A Comparative Study of Nickel and Iron Catalyst Systems, Inorg. Chim. Acta 2003, 345, 279.
G. J. P. Britovsek, V. C. Gibson, B. S. Kimberley, S. Mastroianni, C. Redshaw, G. A. Solan, A. J. P. White, D. J. Williams, Bis(imino)pyridyl iron and cobalt complexes: the effect of nitrogen substituents on ethylene oligomerisation and polymerisation, J. Chem. Soc., Dalton Trans. 2001, 1639.
G. J. P. Britovsek, S. Mastroianni, G. A. Solan, S. P. D. Baugh, C. Redshaw, V. C. Gibson, A. J. P. White, D. J. Williams, M. R. J. Elsegood, Oligomerisation of Ethylene by Bis(imino)pyridyliron and -cobalt Complexes, Chem. Eur. J. 2000, 6, 2221.
Davies Christopher James
Solan Gregory Adam
Bell Catherine L.
ExxonMobil Chemical Patents Inc.
Lu Caixia
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