Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2011-03-15
2011-03-15
McDonough, James E (Department: 1731)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S100000, C502S102000, C502S150000, C502S167000, C502S200000
Reexamination Certificate
active
07906451
ABSTRACT:
Catalysts for the polymerization of olefins are provided. The catalysts comprise:(a) a first active polymerization catalyst which is a Fe or Co complex of a ligand of the formula:wherein:R1, R2and R3are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or an inert functional group;R4and R5are each independently hydrogen, hydrocarbyl, an inert functional group or substituted hydrocarbyl; andR6and R7are aryl or substituted aryl; and(b) a second active polymerization catalyst which contains one or more transition metals; and(c) a catalyst support.
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Citron Joel David
Wang Lin
Cash Barry Dale
E.I. Du Pont de Nemours and Company
McDonough James E
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