Exxon Research and Engineering Company

Infineum USA LP

Manuel A Francisco

Morton Beltzer

Paul Joseph Berlowitz

Daniel Paul Leta

Alan Roy Katritzky

Edward Ira Stiefel

Jonathan Martin McConnachie

Catherine L Coyle

Thomas L Ashcraft

Howard L Fang

Jeenok T Kim

John W Frankenfeld

Kim E Fyfe

Charles Frederick Pictroski

Jason Z Gao

Kenneth D Rose

Ken Lewtas

Abhimanyn Onkar Patil

Peter John Guzi

A lubricating oil composition is provided comprising a major amount of an oil of lubricating viscosity and a minor amount of at least one trinuclear molybdenum compound. Preferably, the trinuclear molybdenum compound is selected from those compounds having the formula Mo,S,L,Q,and mixtures thereof in which L is a ligand having organo groups with a sufficient number of carbon atoms to render the compound soluble in the oil, k varies from 4 through 7, Q is selected from the group of compounds having lone pair electrons including water, amines, alcohols, phosphines, and ethers, and z ranges from 0 to 5. In general, the organo groups of the mono-anionic ligands will be the same although they may be different, and they preferably are selected from alkyl, aryl, substituted aryl, and ether groups. For example, when L is a dialkyldithiocarbamate or a dialkyldithiophosphate, the alkyl groups will have from about 1 to 30 carbon atoms.

Trinuclear molybdenum multifunctional additive for lubricating oils

A lube oil composition that inhibits lubricant viscosity increase and dispersancy decrease is described. The composition includes an oil of lubricating viscosity and a mixture of specified functionalized derivatives of pentaerythritol tetrakis 3-mercaptopropionate and amine antioxidants.

Lubricant additive composition for inhibiting viscosity increase and

This invention relates to synthetic based turbo oils, preferably polyol ester-based turbo oils which exhibit exceptional load-carrying capacity by use of a synergistic combination of sulfur (S)-based and phosphorous (P)-based load additives. The S-containing additive of the present invention is sulfurized fatty acid (SFA), preferably the sulfurized oleic acid (SOA) and the P-containing additive is one or more amine phosphate(s). The turbo oil composition consisting of the dual P/S additives of the present invention achieves an excellent load-carrying capacity, which is better than or equivalent to that obtained when each additive was used alone at a treat rate higher than the total additive combination treat rate, and this lower additive concentration requirement allows the turbo oil composition to meet or exceed U.S. Navy MIL-L-23699 requirements including Oxidation and Corrosion Stability and Si seal compatibility.

High load-carrying turbo oils containing amine phosphate and sulfurized

The present invention provides novel polymers comprising a plurality of dihydroxy aromatic moieties and at least one polyalkyl moiety. In one embodiment of the present invention, the polymer is formed from about 2 to about 50 interconnected dihydroxy aromatic moieties each having an attached polyalkyl moiety. In another embodiment of the present invention, the polymer is represented by the formula A.sub.x P.sub.y where A is an aromatic dihydroxy moiety and P is a polyalkyl moiety. The polymers of the invention are useful as lubricating oil additives.

Polymers having dihydroxy moieties

The present invention provides for the use of certain oil soluble iodides to enhance the oxidation resistance of lubricating oils and fuels, and for the novel formulated compositions containing these iodides. Oil soluble iodides such as C.sub.16 to C.sub.78 alkyl ammonium as well as oil solubilizable or dispersible iodides such as CoI.sub.2, CuI, KI and NaI in combination with a suitable dispersing agent may be used. Typically a minor amount of additive, from about 40 to about 1000 ppm is used. The additive is effective as an antioxidant in a variety of different types of base and formulated oils.

Oil soluble iodides as lubricant antioxidants

Adducts of benzotriazole or substituted benzotriazole with formaldehyde or with thiadiazole or substituted thiadiazole are useful as ashless anti-wear/anti-friction/anti-oxidant additives for lubricants. Formulated lubricants containing such adducts exhibit compound levels of anti-wear, anti-friction and oxidation stability performance.

Ashless benzotriazole-thiadiazol compounds as anti-oxidant, anti-wear

A lubricating oil composition for jet engines which comprises: (a) an aviation turbine oil; (b) from about 0.025 to about 5.0 wt %, based on lubricating oil composition, of a dimercaptothiadiazole of the formula: ##STR1## where R and R.sup.1 are each independently hydrogen or hydrocarbyl radical having from 1 to 20 carbon atoms; and (c) from about 1.0 to about 30.0 wt %, based on lubricating oil composition, of an alphaolefin/maleic ester copolymer of the formula ##STR2## where R.sup.3 and R.sup.4 are each independently C.sub.1 to C.sub.18 alkyl, and n is an integer such that the average molecular weight of the copolymer is from 500 to 20,000.

Corrosion inhibitor for aviation turbine oils (PNE-628)

A lubricant composition which comprises a major amount of a lubricating oil base stock and a minor amount of a benzotriazole of the formula: ##STR1## where R and R.sup.1 are hydrocarbyl groups having from 1 to 30 carbon atoms. The load-carrying properties of the benzotriazoles of the formula (I) are activated by subjecting the lubricant composition to load-carrying conditions.

Stress activated high load additives for lubricant compositions

It has now been discovered that hydrocarbon feeds containing a polycyclic aromatic compound or mixtures thereof can be selectively hydrogenated by contacting the feed with a transition metal catalyst and hydrogen in the presence of an acid to provide a hydrocarbon mixture in which the aromatic content consists substantially of mono- and di-aromatic compounds. Useful acids include Lewis acids and acids having a pKa in the range of 0 to about -10.

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Washington, NJ, United States of America

Manuel A Francisco