Process for the selective oligomerization of ethylene

Details Process for the selective oligomerization of ethylene Process for the selective oligomerization of ethylene

2005-08-09

2005-08-09

Harlan, Robert D. (Department: 1713)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By addition of entire unsaturated molecules, e.g.,...

C585S526000, C526S161000, C526S171000, C526S172000, C526S348000, C502S155000, C502S167000

Reexamination Certificate

active

06927313

ABSTRACT:
Process for the selective oligomerization of ethylene to give α-olefins essentially consisting of C4to C8, characterized in that it is carried out in the presence of a catalytic system comprising the complex having general formula (II): (L)M(Y)nwherein L represents the ligand having general formula (I) M represents a transition metal; Y is selected from groups of an anionic nature bound to the metal as anion in ionic couple or with a covalent bond of the “σ” type.

REFERENCES:
patent: 5880323 (1999-03-01), Brookhart et al.
patent: 5932670 (1999-08-01), Koppl et al.
B.L. Small et al.: “Iron-based catalysts with exceptionally high activities and selectivites for oligomerization of ethylene to linear alpha-olefins” Journal of the Americal Chemical Society, vol. 120, No. 28, pp. 7143-7144.

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