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AssigneeDow Global Technologies LLC
InventorsJohn R. Briggs, Jasson T. Patton, Daryoosh Beigzadeh, Peter M. Margl, Henk Hagen, Sonet Vermaire-Louw
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A process for the telomerization of butadiene comprises reacting 1,3-butadiene and an alkanol, in the presence of a catalyst promoter and an alkoxydimerization catalyst comprising a Group VIII transition metal and a triarylphosphine ligand, which includes one phenyl that is mono-ortho-alkoxy substituted and at least one other phenyl including at least one substituent that withdraws electrons from the phosphorus atom. The product includes an alkoxy-substituted octadiene, which may then be used to produce 1-octene. The catalyst shows improved stability, activity and selectivity toward the alkoxy-substituted octadiene.
A process for the telomerization of butadiene comprising reacting, in a reaction zone in the liquid phase, 1,3-butadiene, and an active hydrogen containing compound, in the presence of a catalyst that comprises a Group VIII transition metal and a phosphine ligand having three phenyl groups, wherein one phenyl group has as a substituent exactly one ortho-alkoxy group, and at least one of the other two phenyl groups comprises at least one substituent that has a Hammett constant value greater than zero, such that the phosphine ligand has a Tolman's chi value ranging from 10 to 18, and a catalyst promoter;
A process for producing 1-octene from butadiene, comprising (1) reacting 1,3-butadiene and an active hydrogen containing compound, in the presence of an alkoxydimerization catalyst comprising a Group VIII transition metal and a phosphine ligand having three phenyl groups, wherein one phenyl group has as a substituent exactly one ortho-alkoxy group, and at least one of the other two phenyl groups comprises at least one substituent that has a Hammett constant value greater than zero, such that the phosphine ligand has a Tolman's chi value ranging from 10 to 18, and a catalyst promoter;
Dependencies are inferred from the claim text.