Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2007-06-28
2010-12-14
Harlan, Robert D. (Department: 1796)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S012000, C556S021000, C556S028000, C556S030000, C556S043000, C556S053000, C556S056000, C556S087000, C556S408000, C556S070000, C534S011000, C534S015000, C549S003000, C549S032000, C502S117000, C502S103000, C526S128000, C526S149000, C526S150000, C526S348100, C526S348500, C526S351000, C526S352000
Reexamination Certificate
active
07851644
ABSTRACT:
A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using the catalytic system are disclosed; the heterocyclic metallocenes correspond to the formula (I): YjR″iZjjMeQkPlwherein Y is a coordinating group containing a six π electron central radical directly coordinating Me, to which are associated one or more radicals containing at least one non-carbon atom selected from B, N, O, Al, Si, P, S, Ga, Ge, As, Se, In, Sn, Sb and Te; R″ is a divalent bridge between the Y and Z groups; Z is a coordinating group, optionally being equal to Y; Me is a transition metal; Q is halogen or hydrocarbon substituents; P is a counterion; i is 0 or 1; j is 1-3; jj is 0-2; k is 1-3; and l is 0-2.
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Dubitsky Yuri A.
Elder Michael J.
Ewen John A.
Jones, Jr. Robert L.
Basell Polyolefine GmbH
Harlan Robert D.
Reid William R.
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