Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2007-05-08
2007-05-08
Lu, Caixia (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S133000, C526S134000, C526S160000, C526S165000, C526S172000, C526S943000, C556S019000, C556S053000, C502S103000, C502S152000, C502S155000
Reexamination Certificate
active
11077741
ABSTRACT:
This invention relates to metallocene compounds represented by formula:whereinM is a group 3, 4, 5 or 6 transition metal atom, or a lanthanide metal atom, or actinide metal atom;E is a substituted or unsubstituted indenyl ligand that is bonded to Y through the two position of the indenyl ring;A is bonded to Y, and is a substituted or unsubstituted cyclopentadienyl ligand, a substituted or unsubstituted heterocyclopentadienyl ligand, a substituted or unsubstituted indenyl ligand, a substituted or unsubstituted heteroindenyl ligand, a substituted or unsubstituted fluorenyl ligand, a substituted or unsubstituted heterofluorenyl ligand, or other mono-anionic ligand, or A may, independently, be defined as E;Y is a phosphorus containing group that is bonded to both E and A, and is bonded via the phosphorus atom to E; andX are, independently, univalent anionic ligands, or both X are joined and bound to the metal atom to form a metallocycle ring, or both X join to form a chelating ligand, a diene ligand, or an alkylidene ligand.
REFERENCES:
patent: 6156844 (2000-12-01), Hashimoto et al.
patent: 6191241 (2001-02-01), Ostoja-Starzewski et al.
patent: 6353064 (2002-03-01), Ostoja-Starzewski et al.
patent: 6632911 (2003-10-01), Takahashi et al.
patent: 99/40129 (1999-08-01), None
patent: 99/42497 (1999-08-01), None
Gobley et al., “Some New exo,exo-Bis(isodicyclopentadienyl)titanium and -zirconium Dichloride Derivatives: Synthesis, Characterization, and Evaluation as Propene Polymerization Catalysts”, Organometallics, 1998, 17, 4897-4903.
Leyser et al., “Phosphonium-Bridged Alkali and Alkaline-Earth Metallocene Complexes”, Organometallics, 1998, 17, 2155-2161.
Schaverien et al., “Phosphorus-bridged metallocenes: New homogeneous catalysts for the polymerization of propene”, Journal of Molecular Catalysis A: Chemical 128(1998), 245-256.
Alt et al., “PPh-bridged metallocene complexes of the type (C13H8-PPh-C13H8)MCl2(M=Zr,Hf)”, Journal of Organometallic Chemistry, 568, (1998) 127-131.
Shin et al., “Phosphorus-Bridgedansa-Metallocene Complexes of Titanium, Zirconium, and Hafnium: The Syntheses and Structures of [PhP(C5Me4)2]MX2and [Ph(E)P(C5Me4)2]MX2(E=O, S, Se) Derivatives”, Organometallics, 1999, 18, 6-9.
Häp et al., “Dichloro[bis(η3-2,4-cyclopentadien-1-yl)alkylphosphan]zirconium: PR(C5H4)2ZrCl2; R=Me, Et,iPr,tBu”, Z. Naturforsch. 54 b, 482-486 (1999).
Shin et al., “CationicAnsa-Zirconocene and Hafnocene Derivatives of a Monoanionic Phosphonium-Bridged Bis(permethylcyclopentadienyl) Ligand: Synthesis and Structural Characterization of {[Me2P(C5Me4)2]MCl2}+(M=Zr, Hf) and {[Me2P(C5Me4)2]ZrMe2}+”, Organometallics, 2000, 19, 5155-5159.
Canich Jo Ann M.
Izmer Vyatcheslav V.
Kazyulkin Denis N.
Ryabov Alexey N.
Voskoboynikov Alexander Z.
Bell Catherine L.
ExxonMobil Chemical Patents Inc.
Lu Caixia
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