Exxon Chemical Patents, Inc.

Exxon Chemical Company

James S Puckace

Raymond F Watts

Antonio Gutierrez

Jack Ryer

Craig W Gleason

Stanley J Brois

Ricardo A Bloch

Roger K Nibert

Daniel R Mills

Edmund H Braun, Ii

Jack Ryer, Deceased

David J Martella

George W Schriver

Sulfur-containing boroester compounds useful as antiwear additives for oleaginous compositions including alicyclic borate thioesters having the general formula (I): ##STR1## wherein R.sub.1 is a hydrocarbyl radical having 4 to 12 carbon atoms, R.sub.2 and R.sub.3 are independently selected from --(OR.sub.4).sub.n SR.sub.1 and --(OR.sub.4).sub.n SR.sub.1 OH; R.sub.4 is a hydrocarbyl radical having 1 to 6 carbon atoms; n is an integer of from 1 to 4; and l and m are independently 0, 1 or 2; thioalkyl-substituted cyclic meta borate esters having the general formula (II): ##STR2## wherein n, R.sub.1 and R.sub.4 are defined as in formula (I); and mixtures of the alicyclic compounds of formula (I) and the cyclic compounds of formula (II).

Process for making sulfur boron antiwear agents for lubricating

Sulfur boron antiwear agents for lubricating compositions

This invention provides oil-soluble complexes of oil-insoluble phosphorus-free strong mineral acids and alcohols. The complexes are useful antiwear additives in lubricating oils, particularly automatic transmission fluids.

Oil soluble complexes of phosphorus-free strong mineral acids useful as

This invention provides synergistic combinations of dithioketals with hindered phenols, phosphite esters, or mixtures thereof. These combinations are useful antioxidants in lubricating oils.

Synergistic antioxidant combinations for lubricating oils

This invention provides sulfur-containing carbonate reaction product additives which are useful as phosphorus-free antiwear additives in lubricating oils, particularly automatic transmission fluids.

Sulfur-containing carbonate reaction products as lubricating oil

A phosphorous- and sulfur-containing additive and its use to impart anti-wear properties to oleaginous compositions such as fuels and lubricating oils, particularly power transmission compositions, such as automatic transmission fluids, is disclosed. The additive comprises a mixture of products formed, for example, by simultaneously reacting (1) a beta-hydroxy thioether, such as thiobisethanol, (2) a phosphorous-containing reactant, such as triethyl phosphite and (3) optionally, a nucleophilic reactant capable of reacting with the episulfonium cation ##STR1## to form thioether species.

Mixed phosphorous- and sulfur- containing reaction products useful in

A phosphorous- and sulfur-containing additive and its use to impart anti-wear and/or antioxidant properties to oleaginous compositions such as fuels and lubricating oils, particularly power transmission compositions, such as automatic transmission fluids, is disclosed. The additive comprises a mixture of products formed by simultaneously reacting (1) a beta-hydroxy thioether, such as thiobisethanol, and (2) a phosphorous-containing reactant, such as tributyl phosphite. The reaction is carried out under reduced pressure conditions (e.g., -40 KPa to -100 KPa) to limit the amount of thioether species in said additive to less than about 45 mole %.

Low pressure derived mixed phosphorous- and sulfur- containing reaction

Mixed phosphorous- and sulfur-containing reaction products useful in

A phosphorous- and sulfur-containing additive and its use to impart anti-wear and/or antioxidant properties to oleaginous compositions such as fuels and lubricating oils, particularly power transmission compositions, such as automatic transmittion fluids, is disclosed. The additive comprises a mixture of products formed by simultaneously reacting (1) a betahydroxy thioether, such as thiobisethanol, and (2) a phosphorous-containing reactant, such as tributyl phosphite. The reaction is carried out under reduced pressure conditions (e.g., -40 KPa to -100 KPa) to limit the amount of thioether species in said additive to less than about 45 mole %.

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Perrineville, NJ, United States of America

James S Puckace