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06/25/09 - USPTO Class 208 |  1 views | #20090159492 | Prev - Next | About this Page  208 rss/xml feed  monitor keywords

Process to prepare a lubricating base oil and its use

USPTO Application #: 20090159492
Title: Process to prepare a lubricating base oil and its use
Abstract: Lube base stocks and lube stock compositions, as well as a process for preparing lube base stocks and lube stock compositions, are disclosed. The lube oils preferably have a viscosity index above about 115. The process involves obtaining feed-stocks that have a 95% point below 1150° F. and feedstocks that have 95% point above 1150° F. The feedstocks that have a 95% point below 1150% are catalytically dewaxed, and the feedstocks that have 95% point above 1150% are solvent dewaxed. The resulting products can optionally be blended, and the base stocks can be combined with various additives to form lube oil compositions. Hydrotreatment can optionally be performed on the lube base stocks to remove olefins, oxygenates and other impurities. In one embodiment, one or more of the fractions are obtained from Fisher-Tropsch synthesis. One or more of the fractions can also be obtained from other sources, for example, via distillation of crude oil, provided that the fractions do not include appreciable amounts (i.e., amounts which would adversely affect the catalyst used for catalytic isodewaxing) of thiols or amines. The individual fractions can also includes combinations of feedstocks, from Fisher-Tropsch and other sources. (end of abstract)



Agent: Shell Oil Company - Houston, TX, US
Inventors: Etienne Duhoux, Etienne Duhoux, Gilbert Robert Bernard Germaine, Gilbert Robert Bernard Germaine, Yunus Sajad Hussein, Yunus Sajad Hussein, Janet Marian Smithers, Janet Marian Smithers, Wiecher Derk Evert Steenge, Wiecher Derk Evert Steenge, David John Wedlock, David John Wedlock
USPTO Applicaton #: 20090159492 - Class: 208 46 (USPTO)

Process to prepare a lubricating base oil and its use description/claims


The Patent Description & Claims data below is from USPTO Patent Application 20090159492, Process to prepare a lubricating base oil and its use.

Brief Patent Description - Full Patent Description - Patent Application Claims
  monitor keywords FIELD OF THE INVENTION

This invention relates to a process for preparing lube base stocks.

BACKGROUND OF THE INVENTION

Lubricants used in automobiles, diesel engines and other equipment are composed of base stocks and/or base oils and additives. Base stocks and base oils are typically hydrocarbons and are divided into five groups according to their sulfur content, saturates content, and viscosity index, according to the API Interchange Guidelines (API Publication 1509).

Group Sulfur, ppm

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Industry Class:
Mineral oils: processes and products

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