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
2011-07-12
2011-07-12
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, C502S162000, C502S167000
Reexamination Certificate
active
07977268
ABSTRACT:
Mixtures of different polyolefins may be made by direct, preferably simultaneous, polymerization of one or more polymerizable olefins using two or more transition metal containing active polymerization catalyst systems, at least one of which contains cobalt or iron complexed with selected ligands. The polyolefin products may have polymers that vary in molecular weight, molecular weight distribution, crystallinity, or other factors, and are useful as molding resins and for films.
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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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