Texaco Inc.

Jayne M Lucas

Doris Love

Julian H Dancy

Gregory P Anderson

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

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.

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Campbell Hall, NY, United States of America

Jayne M Lucas