Mobil Oil Corporation

Exxonmobil Research and Engineering Company

John P Doner

Andrew G Horodysky

John A Keller, Jr

Liehpao O Farng

Marc-Andre Poirier

Todd Timothy Nadasdi

James E Spagnoli

Spencer Troy Stober

Barbara Anne Carfolite

John Kenneth Graham

Norman Charles Sundstrom

Paul Richard Grives

James Fredrick Van Auken

A grease composition is provided that exhibits good low temperature torque and low oil separation. The grease comprises a base oil having a VI greater than about 120, a pour point below about &#x2212;20&#xb0; C. wherein the base oil contains about 10 wt % to about 100 wt % of a gas to liquid base stock and from 0 wt % to about 90 wt % of a polyalphaolefin fluid.

Grease compositions

A continuous process for preparing lithium complex greases improved by using a complexing agent of dimethyl glutarate, dimethyl adipate, glutaric acid, adipic acid, or mixtures thereof, and preferably also a specialized flash chamber to achieve a penetration split (60X-UW) of within &#x2212;20 mm/10 to 10 mm/10, a roll stability (D1831) of &#x3c;30 mm/10, and a dropping point (D2265) of &#x3e;240&#xb0; C.

Method and equipment for making a complex lithium grease

A grease composition comprising a base oil and a thickener that meets specified low temperature torque and high temperature evaporation requirements uses a base oil consisting essentially of a mixture of dimer, trimer, and higher oligomers of poly olefin wherein less than 10 wt % of the oligomer mixture is dimer.

PAO oil selection to control lubricating grease evaporation and low temperature

Pre-blended combinations and reaction products of at least one metallic dithiocarbamate and at least one metallic dithiophosphate provide the synergism of antiwear properties with friction-reducing properties for lubricants and greases.

Friction-reducing and antiwear/EP additives for lubricants

Grease compositions, wherein the grease is thickened with a metal hydroxy-containing soap grease thickener are provided. Other essential ingredients of the compositions include borated hydroxyhydrocarbyl esters and phosphorus and/or sulfur compounds.

Grease composition

The invention is an improved grease composition comprising a major proportion of a grease, a hydroxy-containing soap thickener and a minor amount of a compound prepared by reacting a boron compound with an organic compound containing oxygen, sulfur and/or nitrogen or mixtures thereof.

The invention is a grease composition comprising a major proportion of a grease, a hydroxy-containing soap thickener and a minor amount of a compound prepared by reacting a boron compound with an organic compound containing oxygen, sulfur and/or nitrogen. Non-zinc phosphorodithioate sulfur and/or phosphorous compounds are also incorporated into the composition.

Improved grease compositions, wherein the grease is thickened with a hydroxy-carboxylate soap grease thickener, preferably a lithium 12-hydroxy stearate, and a means for increasing the dropping point which is a borated n-hydrocarbyl propylenediamine and optionally compounds containing phosphorus and/or sulfur moieties are disclosed.

Grease compositions, wherein the grease is thickened with a metal hydroxy-containing soap grease thickener are provided. Other essential ingredients of the compositions include borated hydrocarbylamines.

The invention is a grease composition comprising a major proportion of a grease, a hydroxy-containing soap thickener and a minor amount of a compound prepared by reacting a boron compound with an alkoxylated amide containing a hydrocarbyl group of 1 to 60 carbon atoms and hydrocarbylene groups of 2 to 6 carbon atoms. Sulfur and/or phosphorous compounds are also incorporated into the composition.

Grease composition containing alkoxylated amide borates

Certain organic ester, amide and amine salts of phosphorodithioate coupled carboxylic anhydrides have been found to be effective multifunctional antiwear and antioxidant additives for lubricants.

Organic ester, amide or amine salts of phosphorodithioate substitute

The invention is a grease composition comprising a major proportion of a grease, a hydroxy-containing soap thickener and a minor amount of a compound prepared by reacting a boron compound with an organic compound containing oxygen, sulfur and/or nitrogen. Sulfur and/or phosphorous compounds are also incorporated into the composition.

Phosphorodithioate substituted carboxylic anhydride or acid derivates and their corresponding metal salts have been found to be effective multifunctional additives for various lubricants and fuels.

Substituted phosphorodithioates and their metal salts as multifunctional

Grease compositions, wherein the grease is thickened with a metal hydroxy-containing soap grease thickener are provided. Another essential ingredient of the composition is a borated hydrocarbyl diol. The compositions may also contain phosphorus and sulfur moieties.

Grease compositions comprising borated diols and hydroxy-containing

Disclosed is a grease composition comprising a major proportion of a grease, a hydroxy-containing soap thickener and a minor amount of a boronated oxazoline compound. The hydroxy-containing soap thickener and boronated oxazoline compound are each added in amounts sufficient to increase the dropping point of the grease an appreciable amount. Generally this can be an increase of at least 15.degree. F. and could be as great as 200.degree. F. to 250.degree. F. or more. Sulfur and phosphorus compounds can also be incorporated into the composition.

Growing community of inventors

Sewell, NJ, United States of America

John P Doner