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
2005-03-08
2005-03-08
Bell, Mark L. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C526S161000, C526S169000
Reexamination Certificate
active
06864209
ABSTRACT:
A catalytic composition for oligomerizing olefins, in particular ethylene, comprises mixing at least one nickel complex, prepared by reacting a nickel salt with a phosphonite ligapd, with at least one hydrocarbylaluminum compound in a molar proportion with respect to the nickel of not more than 8″ and selected from the group formed by tris(hydrocarbyl)aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.
REFERENCES:
patent: 4025570 (1977-05-01), Cramer
Patent Abstract of Japan—vol. 1998, No. 02, Jan. 30, 1998, and JP 09 268 132 A (Mitsubishi Chem Corp), Oct. 14, 1997.
XP-002224757—Organometallics 2000, 19, 2676-2683, Ruthenium Complexes with Novel Tridentate N,P,N Ligands Containing a Phosphonite Bridge between Two Chiral Oxazollnes. Catalytic Activity in Cyclopropanation of Olefins and Transfer Hydrogenation of Acetophenone, Pierre Braunstein et al.
Braunstein Pierre
Saussine Lucien
Speiser Fredy
Bell Mark L.
Institut Francais du Pe'trole
Millen White Zelano & Branigan P.C.
Pasterczyk J.
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