Method of oligomerizing 1-olefins
AssigneeGulf Research & Development Company
InventorsBarrett L. Cupples, William J. Heilman, A. Norman Kresge
Life of this patent
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Abstract
The trimer to tetramer ratio of an alpha-olefin oligomer is varied over a significant range in a continuous, multi-stage alpha-olefin oligomerization process including a series of at least two flow-through tank reactors by controlling the amount of conversion taking place in each stage. The multi-stage process is used to prepare various poly(l-decene) oligomer mixtures having different oligomer proportions for use as synthetic lubricants.
Claims10
The continuous process for polymerizing a l-olefin to an oligomer mixture including trimer and tetramer which comprises continuously introducing a l-olefin having from about five to about 14 carbon atoms or a mixture thereof into the first of a series of two or more tank reactors in the presence of a catalytic amount of boron trifluoride and a co-catalyst that complexes with boron trifluoride with mixing therein to provide a substantially homogeneous reaction mixture and continuously removing a partially oligomerized product stream from the first of said tank reactors and introducing said product stream into the second of said tank reactors for further conversion of said l-olefin to oligomer product, said series of tank reactors being maintained at a same or different temperature suitable for the oligomerization reaction.
The continuous process for polymerizing l-decene to an oligomer mixture including trimer and tetramer which comprises continuously introducing l-decene into a first tank reactor in the presence of a catalytic amount of boron trifluoride complex and free boron trifluoride with mixing therein to provide a substantially homogeneous reacting mixture and continuously removing a partially oligomerized product stream from said first tank reactor and introducing said product stream into a second tank reactor for further reaction at a temperature in both reactors suitable for oligomerization.
Dependencies are inferred from the claim text.