Tetramers of 1-octene and polyalphaolefin compositions produced therefrom

Abstract

Processes for producing a 1-octene tetramer (C32) product include the steps of contacting a first catalyst composition with an olefin feedstock comprising at least 50 wt. % of 1-octene under first oligomerization conditions to produce a first oligomer product comprising a C16 vinylidene dimer, followed by separating the C16 vinylidene dimer from the first oligomer product, and then contacting the C16 vinylidene dimer with a second catalyst composition under second oligomerization conditions to produce a second oligomer product comprising at least 50 wt. % of C32 olefins. Polyalphaolefins can subsequently be produced by separating the C32 olefins from the second oligomer product and hydrogenating the C32 olefins to form the polyalphaolefin product. Polyalphaolefins produced from the C32 olefins have an advantageous combination of kinematic viscosity, pour point, flash point, and viscosity index.

Dependencies are inferred from the claim text.