Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2007-10-02
2007-10-02
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...
C526S160000, C526S165000, C526S133000, C526S134000, C526S348000, C526S352000, C502S103000, C502S155000, C556S053000
Reexamination Certificate
active
11078920
ABSTRACT:
This invention relates to compounds represented by formula:whereinM is a group 3, 4, 5 or 6 transition, lanthanide, or actinide metal atom;E is an indenyl ligand substituted in any position with at least one aromatic or pseudoaromatic heterocyclic substituent that is bonded to the indenyl ring through a nitrogen or phosphorous ring heteroatom;A is a substituted or unsubstituted cyclopentadienyl, heterocyclopentadienyl, indenyl, heteroindenyl, fluorenyl, or heterofluorenyl ligand, or other mono-anionic ligand, or A may, independently, be E;Y is an optional bridging group;y is zero or one;X are, independently, univalent anionic ligands, andprovided that when A is E, and y is one, and Y is bonded to the one position of each indenyl ligand, and per indenyl ligand there is only one aromatic heterocyclic or pseudoaromatic heterocyclic that is bonded to the indenyl ligand.
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Canich Jo Ann M.
Izmer Vyatcheslav V.
Lebedev Artyom Y.
Nikulin Mikhail V.
Ryabov Alexey N.
Bell Catherine L.
ExxonMobil Chemical Patents Inc.
Lu Caixia
LandOfFree
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