Copolymerization of ethylene and dienes

Details Copolymerization of ethylene and dienes Copolymerization of ethylene and dienes

2005-08-23

2005-08-23

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, C526S169100, C526S171000, C526S172000

Reexamination Certificate

active

06933359

ABSTRACT:
Ethylene, dienes and optionally α-olefins are copolymerized by selected iron complexes of 2,6-pyridinecarbox-aldehydebis(imines) and 2,6-diacylpyridinebis(imines). The resulting copolymers contain residual olefinic unsaturation from the diene monomers, and some of these copolymers contain cyclic units in the main chain.

REFERENCES:
patent: 5916989 (1999-06-01), Brookhart et al.
patent: 5955555 (1999-09-01), Bennett
patent: 6451939 (2002-09-01), Britovsek et al.
patent: 6479601 (2002-11-01), Kerns et al.
International Search Report (PCT/US00/31604) dated Feb. 28, 2001.

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