Texaco Inc.

Ethyl Additives Corporation

Doris Love

Julian H Dancy

Joseph B Biasotti

Jayne M Lucas

Sheldon Herbstman

Raymond C Schlicht

Cyril A Migdal

Carmen M Cusano

Alison E Hadowanetz

Harold S Magaha

Carl K Esche

Gregory P Anderson

Michael P Petrus

A method for producing an ashless, antioxidant lubricating oil additive. The method comprises: (a) reacting an alcohol with phosphorus pentasulfide to form a dithiophosphoric acid intermediate; (b) treating the dithiophosphoric acid intermediate with an expoxide to yield a corresponding dithiophosphoric ester alcohol product; and (c) recovering the dithiophosphoric ester alcohol product lubricant oil additive.

Ashless antioxidant lubricating oil additive

The present invention provides a lubricating oil additive which provides anti-wear properties to a lubricating oil. The additive is the reaction product of 2,5-dimercapto-1,3,4-thiadiazole and a mixture of unsaturated mono-, di-, and tri-glycerides. The present invention also provides a lubricating oil additive with anti-wear properties produced by reacting a mixture of unsaturated mono-, di-, and tri-glycerides with diethanolamine to provide an intermediate reaction product and reacting the intermediate reaction product with 2,5-dimercapto-1,3,4-thiadiazole.

Lubricating oil composition providing anti-wear protection

A diesel fuel composition which is comprised of:

Anti-wear lubricity additive for low-sulfur content diesel fuels

An adduct of 2,5-dimercapto-1,2,4 -thiadiazole, an epoxide, a formaldehyde and 4,4'-isopropylidenediphenol represented by the formula ##STR1## where A is H or ##STR2## where R is H or a (C.sub.1 -C.sub.30) alkyl group and n=1-4.

Lubricant ashless antiwear-antioxidant additive

Beta-hydroxyalkyl-bis(alkylthiomethylphenyl) dithiophosphate esters represented by the formulas ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each H, a (C.sub.1 -C.sub.40) alkyl group, --CH.sub.2 SR, --C.sub.6 H.sub.5 or --C.sub.6 H.sub.4 --R.sub.5 providing at least one of R.sub.1, R.sub.2 and R.sub.3 is --CH.sub.2 SR; R.sub.4 is H or a (C.sub.1 -C.sub.40) alkyl group; R is H or a (C.sub.1 -C.sub.40) alkyl group, --C.sub.6 H.sub.5 or --C.sub.6 H.sub.4 --R.sub.5 ; and R.sub.5 is a (C.sub.1 -C.sub.40) alkyl group.

Ashless antiwear-antioxidant lubricating oil additive

A process for preparing a zinc dialkyldithiophosphate which comprises reacting phosphorus pentasulfide with an aliphatic monohydric alcohol in the presence of a hydrocarbyl polyol followed by a reaction with a basic zinc salt to produce a stabilized zinc dialkyldithiophosphate is provided.

Process for the preparation of zinc dialkyldithiophosphate

A lubricating oil additive is prepared by reacting a triglyceride with a basic nitrogen compound to form a reaction product, reacting said reaction product with an acidic molybdenum compound to form an intermediate reaction product, and reacting said intermediate reaction product with a sulfur compound to produce a lubricating oil additive.

Growing community of inventors

Fishkill, NY, United States of America

Doris Love