Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2006-05-09
2006-05-09
Rabago, Roberto (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S161000, C526S172000, C526S169100, C526S171000
Reexamination Certificate
active
07041764
ABSTRACT:
Ethylene and/or propylene, and α-olefins may be copolymerized by contacting then with certain iron or cobalt complexes of selected 2,6-pyridinecarboxaldehydebis(imines) and 2,6-diacylpyridinebis(imines). The polymers produced, some of which are novel, are useful as molding resins.
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Brooke L. Small, et al., Highly Active Iron and Cobalt Catalysts for the Polymerization of Ethylene, J. Am. Chem. Soc., 120, 4049-4050, 1998.
George J. P. Britovsek, et al., Novel Olefin Polymerization Catalysts based on Iron and Cobalt, Chem. Commun., 849-850, 1998.
Bennett Alison Margaret Anne
Feldman Jerald
McCord Elizabeth Forrester
E. I. du Pont de Nemours and Company
Rabago Roberto
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