C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/700.4
C07C 2/26 (2006.01) C07C 2/36 (2006.01) C07C 7/148 (2006.01) C07C 11/02 (2006.01)
Patent
CA 1144950
A B S T R A C T PROCESS FOR THE RECOVERY OF ETHYLENE OLIGOMERS A process for the oligomerization of ethylene in which ethylene is contacted in the liquid phase at elevated pressure with a nickel-containing oligomerization catalyst in the presence of an aliphatic diol solvent, a liquid hydrocarbon phase containing ethylene oligomers, dissolved ethylene, catalyst, diol solvent and a minor amount of diol solvent decomposition products is recovered under pressure from the resulting reaction mixture, residual amounts of catalyst are removed from the said liquid hydrocarbon phase as a sufficiently elevated pressure to maintain ethylene dissolved therein, dis- solved ethylene is separated from the liquid hydrocarbon phase by flashing and the liquid hydrocarbon phase is optionally scrubbed with water, characterized in that the liquid hydro- carbon phase at any point after separation from the solvent phase is contacted with aqueous acid having a pH below 5, and a liquid hydrocarbon phase substantially free of diol solvent decomposition products is recovered therefrom.
350258
Gum Clarence R.
Kister Albert T.
Shell Canada Limited
Smart & Biggar
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