B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/81, 260/706.
B01J 31/22 (2006.01) B01J 31/24 (2006.01) C07C 2/34 (2006.01) C07C 2/36 (2006.01)
Patent
CA 1154422
ABSTRACT Ethylene is oligomerized to even numbered alpha-mono- olefins principally in the C4 to C40 range with minimal con- comitant production of high molecular weight polyethylene by reacting ethylene in a diol solvent in an oligomerization reactor at elevated pressure with a nickel complex catalyst composition produced by combining in the oligomerization re- actor a) a stable preformed complex of nickel, ethylene and hydride in an aliphatic diol solvent, said complex being prepnred by contacting in the diol solvent and in the presence Or ethylene, a simple divalent nickel salt, a base and R boron hydride-reducing agent, and b) a bidentate ligand; the stable nickel complex solution and the bidentate ligand being added in separate portions to the oligomerization reactor. These stable complexes of nickel, ethylene and hydride in diol solution are considered to be novel oligomerization catalyst precursor compositions.
365782
Gum Clarence R.
O'donnell Albert E.
Shell Canada Limited
Smart & Biggar
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