Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-05-16
2006-05-16
Davis, Zinna Northington (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C526S265000
Reexamination Certificate
active
07045632
ABSTRACT:
A hexadentate ligand for polymerization of olefins including chemical structure I is provided:R1, R2, and R3 of chemical structure I are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or an inert functional group; R4 and R5 are each independently hydrogen, hydrocarbyl, an inert functional group, or substituted hydrocarbyl; Y1 is a structural bridge; and W, Y1, and Z are independently hydrogen, hydrocarbyl, an inert functional group, or substituted hydrocarbyl having from about 0 to about 30 carbon atoms. In another embodiment of chemical structure I, W, Y1, and Z are selected to produce chemical structure II:R6, R7, R8, R9, and R10of chemical structure II are each independently hydrogen, hydrocarbyl, an inert functional group, or substituted hydrocarbyl; RA, RB, RC, and RDare each independently hydrogen, fluorine, an inert functional group, a primary carbon group, a secondary carbon group, or a tertiary carbon group; Y2is a structural bridge between two halves of the structure, and more particularly may be a bond, a hydrocarbyl group comprising from about 0 to about 20 carbon atoms, methylene (CH2), ethylene (C2H4), or an inert functional group; and any two of RA, R6, R7, RB, RC, R8, R9, R10, and RD, or any portion of Y2, vicinal to one another, taken together may form a ring.
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Carroll Rodney B.
Chevron Phillips Chemical Company LP
Conley & Rose, P.C.
Davis Zinna Northington
Hulett Joe D.
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