초록

Lubricating oil compositions having enhanced friction coefficient and wear properties are provided by compositions of an oil of lubricating viscosity with additives of molybdenum and diesters of aliphatic or aromatic dicarboxylic acids.

대표청구항 ▼

[ What is claimed is:] [1.] A lubricating composition comprising: a major amount of an oil of lubricating viscosity, from about 0.005 to about 0.2 wt. % of a trinuclear molybdenum compound of the formula: EQU Mo.sub.3 S.sub.k L.sub.n Q.sub.z rein each L is an independently selected ligand, each havi

[ What is claimed is:] [1.] A lubricating composition comprising: a major amount of an oil of lubricating viscosity, from about 0.005 to about 0.2 wt. % of a trinuclear molybdenum compound of the formula: EQU Mo.sub.3 S.sub.k L.sub.n Q.sub.z rein each L is an independently selected ligand, each having an organo group with a sufficient number of carbon atoms to render the compound soluble or dispersible in the oil; n is from 1 to 4; k is from 4 to 7; Q is a neutral electron donating moiety; and z is from 0 to 5; and from about 3 to about 20 wt. % of a diester of an aliphatic or aromatic dicarboxylic acid, the wt. % being based on the weight of the lubricating composition.