Chevron U.s.a. Inc.

Robert J Farina

John Michael Rosenbaum

James Nathan Ziemer

Stephen Joseph Miller

Russell Roland Krug

David C Kramer

Susan Marjorie Abernathy

Brent K Lok

Joseph M Pudlak

Mark Louis Sztenderowicz

Blended lubricant base oils and blended finished lubricants comprising &#x2267;70 weight percent Fischer-Tropsch derived lubricant base oils comprising &#x2267;6 weight % molecules with monocycloparaffinic functionality and less than 0.05 weight % molecules with aromatic functionality; at least one polyalphaolefin lubricant base oil with a kinematic viscosity at 100&#xb0; C. greater than about 30 cSt and less than 150 cSt are provided. These blended lubricant base oils and blended finished lubricants exhibit superior friction and wear properties, in addition to other highly desired properties. Also provided are processes for making these blended lubricant base oils and blended finished lubricants.

Polyalphaolefin and fischer-tropsch derived lubricant base oil lubricant blends

A process for manufacturing a finished lubricant by: a) performing Fischer-Tropsch synthesis on syngas to provide a product stream; b) isolating from said product stream a substantially paraffinic wax feed having less than about 30 ppm total nitrogen and sulfur, and less than about 1 wt % oxygen; c) dewaxing said feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve comprising a noble metal hydrogenation component, wherein the hydroisomerization temperature is between about 600&#xb0; F. (315&#xb0; C.) and about 750&#xb0; F. (399&#xb0; C.), to produce an isomerized oil; and d) hydrofinishing said isomerized oil, whereby a lubricating base oil is produced having specific desired properties; and e) blending the lubricating base oil with at least one lubricant additive.

Finished lubricating comprising lubricating base oil with high monocycloparaffins and low multicycloparaffins

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Richmond, CA, United States of America

Robert J Farina