Chevron U.s.a. Inc.

Other

Susan Marjorie Abernathy

John Michael Rosenbaum

Stephen Joseph Miller

Nancy J Bertrand

Scott C Deskin

Russell Roland Krug

David C Kramer

Kamala R Krishna

James Nathan Ziemer

Brent K Lok

Ryan Joseph Schexnaydre

Kathy A Helling

Sven Ivar Hommeltoft

David R Johnson

Mark E Okazaki

Ajit Ramachandra Pradhan

Mark Louis Sztenderowicz

David S Lee

Steven K Lee

Robert J Farina

Don Young

Kent J Truscott

A method for producing a base oil having a high ratio of weight percent molecules with monocycloparaffinic functionality to weight percent molecules with multicycloparaffinic functionality by hydroisomerization dewaxing a selected Fischer-Tropsch wax under hydroisomerization conditions including a hydrogen to feed ratio from about 712.4 to about 3562 liter H/liter oil.

Method for producing a base oil having high weight percent total molecules with cycloparaffinic functionality and low weight percent molecules with multicycloparaffinic functionality

A method for relieving or preventing symptoms associated with uric acid crystals, comprising consuming a formulation that supports three or more processes, the processes comprising: Also, a process to make a formulation, comprising mixing together:

Method and process for relieving or preventing symptoms

Provided is a method for preparing a grease composition, which comprises mixing grease components under high pressure and high flow rate impingement. In one embodiment, a first mixture of an amine in a lubricating base oil is mixed with an isocyanate in a lubricating base oil under high pressure and high flow impingement. In another embodiment, the mixing and reaction occurs in a reaction injection molding device. The orifice size through which each of the mixtures is introduced into a reaction/mixing zone is less than 0.030 inch (0.0762 centimeter) in diameter. The resulting grease composition is an extremely low noise grease, being virtually clear of any urea thickener particles, and/or can exhibit good high temperature resistance and mechanical stability.

Method of preparing greases

A lubricating base oil manufacturing plant comprising a means for hydroisomerization dewaxing a wax at a specified hydrogen to feed ratio and a means for hydrofinishing the hydroisomerized wax to produce one or more base oils having greater than 10 weight percent total molecules with cycloparaffinic functionality and less than 0.5 weight percent molecules with multicycloparaffinic functionality.

Lubricating base oil manufacturing plant for producing base oils having desired cycloparafinic functionality

We provide a base stock comprising hydrocarbons with consecutive numbers of carbon atoms, wherein the base stock has a boiling range from 388 to 538&#xb0; C., a VI from 105 to less than 130, and a Noack volatility from 5 to 11.5 wt % or a CCS VIS at &#x2212;25&#xb0; C. from 2000 to 4000 mPa&#xb7;s. We also provide a base stock slate comprising the base stock and an additional base stock having an additional boiling range from 371 to 496&#xb0; C., and other properties.

170 neutral base oil with improved properties

We provide a base oil comprising hydrocarbons with consecutive numbers of carbon atoms. The base oil has a boiling range from 700 to 925&#xb0; F. (371 to 496&#xb0; C.), a VI from 105 to 119, and either a Noack volatility less than 18 wt % or a CCS VIS at &#x2212;25&#xb0; C. less than 1500 mPa&#xb7;s. The base oil may have a ratio of Noack Volatility to CCS VIS at &#x2212;25&#xb0; C. multiplied by 100 from 0.80 to 1.55.

110 neutral base oil with improved properties

A middle distillate, comprising hydrocarbons having a boiling range between 150&#xb0; C. and 350&#xb0; C., a NMR branching index greater than 60, and a CH/CHhydrogen ratio greater than 2.6. Also, there is provided the middle distillate made by a process compressing alkylating an isoparaffin with an olefin under alkylation conditions over an unsupported ionic liquid catalyst, and providing an amount of halide containing additive to the alkylating step to achieve the NMR branching index and the CH/CHhydrogen ratio.

Composition of middle distillate

A process for manufacturing a lubricating base oil, comprising dewaxing a substantially paraffinic wax feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve under hydroisomerization conditions including a hydrogen to feed ratio from about 712.4 to about 3562 liter H/liter oil, whereby a lubricating base oil is produced having a) a total weight percent of molecules with cycloparaffinic functionality greater than 10, and b) a ratio of weight percent molecules with monocycloparaffinic functionality to weight percent molecules with multicycloparaffinic functionality greater than 30. Also a method for producing a base oil having a high ratio of weight percent molecules with monocycloparaffinic functionality to weight percent molecules with multicycloparaffinic functionality by hydroisomerization dewaxing a selected Fischer-Tropsch wax under hydroisomerization conditions including a hydrogen to feed ratio from about 712.4 to about 3562 liter H/liter oil. Also a lubricating base oil manufacturing plant.

Process for making lubricating base oils with high ratio of monocycloparaffins to multicycloparaffins

A method of operating a hydraulic pump, comprising: A hydraulic system, comprising a hydraulic system oil reservoir holding a hydraulic oil comprising: In one embodiment the hydraulic oil additionally has low foam tendency and good demulsibility.

Hydraulic system and a method of operating a hydraulic pump

A process for producing a lubricating base oil having high oxidation stability, wherein the feed used to prepare the lubricating base oil contains at least 5 wt. % olefins, said process comprising (a) determining the weight percent of olefins present in the feed by means ofH NMR; (b) hydroprocessing the feed under hydroprocessing conditions selected to reduce the amount of olefins present to a target value which has been pre-determined by means ofH NMR to produce a lubricating base oil having the desired oxidation stability; and (c) collecting a lubricating base oil having the selected oxidation stability from the hydroprocessing zone.

[object Object]

A multigrade engine oil meeting the specifications for SAE J300 revised June 2001 requirements and a process for preparing it, said engine oil comprising (a) between about 15 to about 94.5 wt % of a hydroisomerized distillate Fischer-Tropsch base oil characterized by (i) a kinematic viscosity between about 2.5 and about 8 cSt at 100&#xb0; C., (ii) at least about 3 wt % of the molecules having cycloparaffin functionality, and (iii) a ratio of weight percent molecules with monocycloparaffin functionality to weight percent of molecules with multicycloparaffin functionality greater than about 15; (b) between about 0.5 to about 20 wt % of a pour point depressing base oil blending component prepared from an hydroisomerized bottoms material having an average degree of branching in the molecules between about 5 and 9 alkyl-branches per 100 carbon atoms and wherein not more than 10 wt % boils below about 900&#xb0; F.; and (c) between about 5 to about 30 wt % of an additive package designed to meet the specifications for ILSAC GF-3.

Multigrade engine oil prepared from Fischer-Tropsch distillate base oil

This invention provides a hydraulic oil comprising: 1) a lubricant base oil having an average molecular weight greater than 475, a viscosity index greater than 140, and a weight percent olefins less than 10; and 2) an antiwear hydraulic oil additive package. The hydraulic oil of this invention has an air release by ASTM D 3427-03 of less than 0.8 minutes at 50 degrees C., and a sequence II foam tendency by ASTM D 892-03 of less than 50 ml. We describe a process for making the hydraulic oil of this invention, and a method of operating a hydraulic pump without pump cavitation using the hydraulic oil of this invention.

Hydraulic oil with excellent air release and low foaming tendency

A process for producing one or more white oils, by: a) hydroisomerization dewaxing a waxy feed with a defined composition over a highly selective and active wax hydroisomerization catalyst with a defined composition under conditions sufficient to produce a white oil; and b) collecting one or more white oils, wherein the yield of white oils is high, and they have a low pour point and a good Saybolt color. Also, a process for producing medicinal grade white oils, by a)hydroisomerization dewaxing a waxy feed with a defined composition over a highly selective and active wax hydroisomerization catalyst with a defined composition under conditions sufficient to produce a white oil, b) collecting technical grade white oils having a low pour point and good Saybolt color in high yield, and c) hydrofinishing the technical grade white oils at conditions sufficient to produce medicinal grade white oils that pass the RCS test.

Process to make white oil from waxy feed using highly selective and active wax hydroisomerization catalyst

A process for manufacturing a lubricating base oil 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 is dimerized oil; and d) hydrofinishing said isomerized oil to produce a lubricating base oil having specific desired properties.

Process for manufacturing lubricating base oil with high monocycloparaffins and low multicycloparaffins

A composition of white oil having a kinematic viscosity at 100&#xb0; C. between about 1.5 cSt and 36 cSt, a viscosity index greater than an amount calculated by the equation: Viscosity Index=28&#xd7;Ln(the Kinematic Viscosity at 100&#xb0; C.)+105, less than 18 weight percent of molecules with cycloparaffin functionality, a pour point less than zero degrees C., and a Saybolt color of +20 or greater. Also, a composition of white oil having a kinematic viscosity at 100&#xb0; C. between about 1.5 cSt and 36 cSt, a viscosity index greater than an amount calculated by the equation: Viscosity Index=28&#xd7;Ln(the Kinematic Viscosity at 100&#xb0; C.)+95, between 5 and less than 18 weight percent of molecules with cycloparaffin functionality, less than 1.2 weight percent molecules with multicycloparaffin functionality, a pour point less than zero degrees C., and a Saybolt color of +20 or greater.

Growing community of inventors

Hercules, CA, United States of America

Susan Marjorie Abernathy