Chevron U.s.a. Inc.

Philip E Quinnett

John Michael Rosenbaum

Brent K Lok

Christopher A Simmons

A base oil slate comprising three or more base oil grades having kinematic viscosities at 100&#xb0; C. between about 1.8 cSt and about 30 cSt prepared from a waxy feed wherein each of the base oil grades is a base oil blend which comprises: (a) between about 0.1 wt. % and about 99.9 wt. % of a distillation fraction prepared in light block mode operation; and (b) between about 0.1 wt. % and about 99.9 wt. % of a distillation fraction prepared in medium block mode operation. Also, a base oil slate prepared from a waxy feed, said product slate comprising 3 or more base oil grades, each base oil grade having a kinematic viscosity at 100&#xb0; C. between about 1.8 cSt and about 30 cSt and a VI greater than an amount defined by the equation VI=Ln(Vis100, in cSt)+95, wherein Ln(Vis100, in cSt) is the natural log of the kinematic viscosity at 100&#xb0; C.

Base oil slate prepared from a waxy feed

A process for producing a product slate, which includes at least three base oil grades having kinematic viscosities at 100&#xb0; C. within the range between about 1.8 cSt and 30 cSt, from a waxy feed having an initial boiling point of about 340&#xb0; C. or less and a final boiling point of about 560&#xb0; C. or higher, said process comprising (a) isomerizing at least a portion of the waxy feed, whereby the amount of isoparaffins present are increased; (b) distilling a first portion of the isomerized waxy feed in light block mode operation into at least three base oil fractions having different boiling ranges; (c) distilling a second portion of the isomerized waxy feed in medium block mode operation into at least three base oil fractions having different boiling ranges; and (d) blending at least one base oil fraction produced from light block mode with at least one base oil fraction produced from medium block mode to produce a lubricating base oil blend meeting a target value for at least one pre-selected property.

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Gardena, CA, United States of America

Philip E Quinnett