Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1997-07-10
1999-03-23
Nagumo, Mark
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564270, 564271, 564277, C07C25108
Patent
active
058862242
ABSTRACT:
Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and sometimes other co-catalysts. Since some of the polymerizations exhibit some characteristics of living polymerizations, block copolymers can be readily made. Many of the polymers produced are often novel, particularly in regard to their microstructure, which gives some of them unusual properties. Numerous novel catalysts are disclosed, as well as some novel processes for making them. The polymers made are useful as elastomers, molding resins, in adhesives, etc. Also described herein is the synthesis of linear .alpha.-olefins by the oligomerization of ethylene using as a catalyst system a combination a nickel compound having a selected .alpha.-diimine ligand and a selected Lewis or Bronsted acid, or by contacting selected .alpha.-diimine nickel complexes with ethylene.
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PCT/
Arthur Samuel David
Bennett Alison Margaret Anne
Brookhart Maurice S.
Coughlin Edward Bryan
Feldman Jerald
Citron Joel D
E. I. Du Pont de Nemours and Company
Evans Craig H.
Nagumo Mark
University of North Carolina
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