Nickel complexes in diol solvents and their use as oligomerizati

Details Nickel complexes in diol solvents and their use as oligomerizati Nickel complexes in diol solvents and their use as oligomerizati

1980-01-30

1981-04-07

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

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

585520, 585525, C07C 202

Patent

active

042608449

ABSTRACT:
Ethylene is oligomerized to even numbered alpha-monoolefins principally in the C.sub.4 to C.sub.40 range with minimal concomittant production of high molecular weight polyethylene by reacting ethylene in a diol solvent in an oligomerization reaction zone at elevated pressure with a nickel complex catalyst composition produced by combining in the reaction zone, (a) a stable preformed complex of nickel, ethylene and hydride in a diol solvent, said complex being prepared by contacting in a diol solvent and in the presence of ethylene, a nickel salt, a base and a boron hydride transfer agent and (b) a suitable bidentate ligand; the stable nickel complex solution and the bidentate ligand being added in separate portions to the reaction zone. These stable complexes of nickel, ethylene and hydride in diol solution are considered to be novel oligomerization catalyst precursor compositions.

REFERENCES:
patent: 3644564 (1972-02-01), Van Zwet et al.
patent: 3647914 (1972-03-01), Glockner et al.
patent: 3647915 (1972-03-01), Bauer et al.
patent: 3676523 (1972-07-01), Mason
patent: 3686351 (1972-08-01), Mason
patent: 3737475 (1973-06-01), Mason
patent: 3825615 (1974-07-01), Lutz
patent: 4020121 (1977-04-01), Kister et al.

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