The Lubrizol Corporation

Other

Craig D Tipton

James L Sumiejski

William D Abraham

James J Schwind

Shreyasi Lahiri

Mark R Baker

Reed H Walsh

Thomas A Tagliamonte

Paul E Adams

Richard M Lange

Stuart L Bartley

James P Roski

Richard J Vickerman

William C Ward, Jr

John M Cahoon

Betsy J Butke

Suzanne Patterson

Frederick L Bayles, Jr

James H Bush

Daniel J Saccomando

Mary F Salomon

Jack L Karn

James N Vinci

Christopher L Friend

Barton J Schober

Marina Baum

Jerry L Rutter

Curtis R Scharf

John S Manka

Nai Z Huang

Daniel E Barrer

Roger L Sowerby

Willis P Nichols

James A Supp

Daniel M Vargo

Daniel J Knapton

James C Ray

Stephen A Di Biase

Edward J Konzman

Stephen H Roby

Douglas M Barr

John V Stoffa

Claire L Hollingshurst

Kent B Grover

Elisa J Seddon

David J Aaserud

Calvin A James

William C Ward

Charla A Ramsey

Victor A Gober

Robert W Cain

John C Smoggie

Masahiko Ikeda

Kathleen A Murray

Rolf V Geibach

Bill A Waters

Roy Fewkes

Mitsuo Higashi

Susie Hurley

Suzanne M Patterson

Christopher Friend

The invention provides a lubricating composition containing (a) 0.1 to 15 wt % of a polymer with (i) a weight average molecular weight of 100,000 to 500,000; and (ii) a shear stability index of 10 to 60; (b) a phosphorus-containing acid, salt, or ester; (c) a dispersant; and (d) an oil of lubricating viscosity. The invention further provides a method for lubricating a mechanical device with the lubricating composition.

Star polymer lubricating composition

A lubricant composition of an oil of lubricating viscosity and a polymeric phosphorus ester comprising the condensation product of a monomeric phosphorus acid or an ester thereof with a diol having two hydroxy groups separated by a chain of 4 to about 100 atoms exhibits good volatility, corrosion, wear, and/or seal performance in lubrication of a transmission.

Polymeric phosphorus esters for lubricant applications

A lubricant composition comprising an oil of lubricating viscosity and an oil-soluble branched-chain hydrocarbyl-substituted arenesulfonic acid salt, wherein the arenesulfonic moiety has at least one hydrocarbyl substituent which is a highly branched group as defined by having a Chi(0)/Shadow XY ratio greater than about 0.180, exhibits good dynamic frictional performance.

Highly branched sulfonates for drive-line applications

The present invention relates to a lubricating composition containing a corrosion inhibitor compound and a mixture of two or more dispersants, wherein 0 mole % to less than 50 mole % of the second dispersant molecules contain a carbocyclic ring. The invention further provides a method for lubricating a mechanical device using the lubricating composition.

Multi-dispersant lubricating composition

A composition useful for lubricating an automatic transmission comprises an oil of lubricating viscosity and a hydrocarbyl amine with a hydrocarbyl group of 12 to 22 carbon atoms and having one or two additional groups of the structure &#x2014;R&#x2014;NHC(O)R, wherein Ris an alkylene group of 1 to 4 carbon atoms and Ris a hydrocarbyl group of 4 to 22 carbon atoms, or a nitrogen-containing heterocyclic group, or an aminoalkyl group.

Amine derivatives as friction modifiers in lubricants

The disclosed invention relates to a functional fluid comprising: at least one oil of lubricating viscosity; at least one detergent, the detergent contributing an amount of metal to the functional fluid equal to a concentration in the range from about 0.015 to about 1% by weight of the functional fluid, the detergent contributing an amount of basicity to the functional fluid equal to a total base number in the range from about 0.3 to about 2; and at least one friction modifier, the friction modifier comprising at least two hydrocarbyl groups attached to a polar group or atom (eg., a nitrogen atom).

Functional fluid

The present invention provides a lubricating composition comprising (a) an oil of lubricating viscosity; (b) a friction modifier; (c) a corrosion inhibitor; (d) an antiwear agent; and (e) a product prepared by heating together: (i) a dispersant; (ii) 2,5-dimercapto-1,3,4-thiadiazole or a hydrocarbyl-substituted 2,5-dimercapto-1,3,4-thiadiazole, or oligomers thereof; (iii) a borating agent;and (iv) optionally a dicarboxylic acid of an aromatic compound selected from the group consisting of 1,3 diacids and 1,4 diacids, or (v) optionally a phosphorus acid compound, said heating being sufficient to provide a product of (i), (ii), (iii) and optionally (iv), which is soluble in an oil of lubricating viscosity. The invention further provides a use for the lubricating composition in a transmission.

Lubricant additive formulation containing multifunctional dispersant

A lubricant composition for a final drive axle oil comprising an oil of lubricating viscosity, one or more dispersants and one or more phosphorus compounds wherein the kinematic viscosity of the lubricant composition at 100&#xb0; C. is greater than 10 mm2/s and wherein the amount by weight of the dispersant is greater than the amount by weight of the phosphorus compounds and any sulfur compounds which may optionally be present.

Lubricant composition for a final drive axle

Compositions comprising an oil of lubricating viscosity; an amide represented by the formula RRN&#x2014;C(O)Rwherein Rand Rare hydrocarbyl groups of at least 6 carbon atoms and Ris a hydroxyalkyl group of 1 to 6 carbon atoms or a group formed by the condensation of said hydroxyalkyl group, through a hydroxyl group thereof, with an acylating agent; a nitrogen-containing dispersant; and a phosphorus-containing compound are suitable for lubricating a transmission.

Product of amines with hydroxy acid as friction modifiers suitable for automatic transmission fluids

A composition of a major amount of an oil of lubricating viscosity; a secondary or tertiary amine being represented by the formula RRNRwherein Rand Rare alkyl groups of at least 6 carbon atoms and Ris hydrogen, a hydrocarbyl group, a hydroxyl-containing alkyl group, or an amine-containing alkyl group; and a dispersant, provides high static coefficients of friction and a durable positive slope during oxidative and mechanical stressing, particularly as a friction component of an automatic transmission.

Secondary and tertiary amines as friction modifiers for automatic transmission fluids

A phthalic acid such as terephthalic acid is made soluble in an oil of lubricating viscosity by first mixing it with at least one phosphorus compound. The resulting product is useful for reducing corrosion in a transmission lubricant.

Automatic transmission fluids with phthalic acid corrosion inhibitor

A fluid composition of (a) a friction modifier derived from the reaction of a carboxylic acid or a reactive equivalent thereof with an aminoalcohol, the friction modifier containing at least two hydrocarbyl groups; and (b) a dispersant other than a species of (a), provides good friction properties to an automatic transmission.

Friction modifiers for improved anti-shudder performance and high static friction in transmission fluids

Cyclic oligomers derivable from the copolymerization of isobutylene and isoprene can be hydrogenated to form 1-(2,2,4-trimethylpentyl)-2-isopropyl-3,3,5,5-tetramethylcyclohexane and related compounds, which are useful in lubricants such as a traction fluids.

Cylic oligomer traction fluid

Continuously variable transmissions are lubricated by supplying to the transmission a composition of an oil of lubricating viscosity and an oil-soluble zinc salt containing at least one hydrocarbyl group of at least 4 carbon atoms. The amount of the zinc salt is sufficient to provide an increased steel-on-steel dynamic coefficient of friction for the composition, being at least 0.125. The composition is substantially free from thiophosphate salts and exhibits a copper corrosion rating of 1B or better (ASTM-130).

Method for lubricating a continuously variable transmission

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Perry, OH, United States of America

Craig D Tipton