Preparation of linear olefin products
AssigneeExxon Research & Engineering Co.
InventorArthur W. Langer
Life of this patent
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Abstract
A process for preparing linear alpha olefins and waxes having a total product M.sub.n in the range 200 to 700 comprising at least 90 mole percent linear alpha olefins which includes polymerizing an ethylene containing gas in the presence of the reaction product of a zirconium halide compound with an aluminum cocatalyst selected from the group consisting of dialkyl aluminum alkoxides or aryloxides and dialkyl aluminum disubstituted amides in the presence of a diluent at a temperature of about 50.degree. to 200.degree. C. and an ethylene pressure above about 3.5 MPa, wherein the M.sub.n of said reaction product is controlled by the molar ratio of said aluminum cocatalyst/Zr halide, said molar ratio being less than about 1.
Claims9
A process for preparing linear alpha olefins and waxes having a total product M.sub.n in the range 200 to 700, which comprises polymerizing an ethylene-containing gas in the presence of the reaction product of a Zr metal compound having the formula ZrX.sub.a A.sub.b wherein a=3 or 4, b=0 or 1 and a+b=4 and X=Cl or Br and A is Cl, Br, I, OR or OOCR with an aluminum cocatalyst selected from the group consisting of R.sub.2 AlOR' and R.sub.2 AlNR.sub.2 ", wherein R is a primary, secondary or tertiary alkyl group having about 1 to about 20 carbon atoms and R' or R" is a primary, secondary or tertiary alkyl group having about 1 to about 20 carbon atoms or an aryl or substituted aryl group, in the presence of a diluent at a temperature of about 50.degree. to 200.degree. C. and an ethylene pressure above about 3.5 MPa, wherein the M.sub.n of said reaction product, is controlled by the molar ratio of aluminum cocatalyst ZrCl.sub.4, said molar ratio being less than about 1.
Dependencies are inferred from the claim text.