Exxonmobil Research and Engineering Company

Exxon Research and Engineering Company

Exxonmobil Technology and Engineering Company

Debra A Sysyn

Charles Lambert Baker, Jr

Kendall S Fruchey

Lisa I-Ching Yeh

Bryan E Hagee

Rugved P Pathare

Yogi V Shukla

Richard Charles Dougherty

Daniel J Eichelsdoerfer

Paul Joseph Berlowitz

Bruce R Cook

Timothy Lee Hilbert

Michael B Carroll

Tracie L Owens

Bernard G Silbernagel

Eric B Senzer

Kathleen E Edwards

Camden N Henderson

Bernard George Silbernagel

Bruce Randall Cook

A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by ultra violet (UV) spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.015 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100&#xb0; C. between 4 and 6 cSt. A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by UV spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.020 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100&#xb0; C. between 10 and 14 cSt. A lubricating oil having the base stock as a major component, and one or more additives as a minor component. Methods for improving oxidation performance and low temperature performance of formulated lubricant compositions through the compositionally advantaged base stock.

Base stocks and lubricant compositions containing same

Disclosed are Group III base stocks comprising greater than or equal to about 90 wt. % saturated hydrocarbons (saturates); a viscosity index from 120 to 145; a unique ratio of molecules with multi-ring naphthenes to single ring naphthenes (2R+N/1RN); a unique ratio of branched carbons to straight chain carbons (BC/SC); a unique ratio of branched carbons to terminal carbons (BC/TC); and unique MRV behavior as a function of base stock naphthene ratio (2R+N/1RN). A method for preparing the base stocks is also disclosed. Also disclosed is a lubricating oil having the base stock as a major component, and an additive as a minor component.

Group III base stocks and lubricant compositions

Compositions are provided for lubricant base stocks produced from feeds such as vacuum resid or other 510&#xb0; C.+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks that are resistant to haze formation.

Bright stock production from deasphalted oil

The present invention is a process for producing a distillate fuel heavier than gasoline. The process is a Fischer-Tropsch (hydrocarbon synthesis) process that includes using,C NMR to measure cetane number and a cold flow property in order to optimize the process. Cold flow properties include cold filter plugging point, cloud point and pour point.

Use of 13C NMR spectroscopy to produce optimum fischer-tropsch diesel fuels and blend stocks

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Monroe, NJ, United States of America

Debra A Sysyn