Multi-function additive for lubricating oils

Details Multi-function additive for lubricating oils Multi-function additive for lubricating oils

1989-09-07

1990-12-18

Chaudhuri, Olik

Compositions

Electrolytes for electrical devices

252 464, 252 466, 25240021, 25240054, C10M13900

Patent

active

049784641

ABSTRACT:
A lubricating oil composition is provided which comprises a major amount of an oil of lubricating viscosity and a minor amount of an additive having the formula Mo.sub.4 S.sub.4 L.sub.6 in which L is a ligand selected from dithiocarbamates, dithiophosphates, dithiophosphinates, thioxanthates, and mixtures thereof and in which the ligands, L, have organo groups having a sufficient number of carbon atoms to render the additive soluble in the oil. In general, the organo groups of the ligands, L, 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.

REFERENCES:
patent: 3356702 (1967-12-01), Farmer
patent: 3419589 (1968-12-01), Larson
patent: 3509051 (1970-04-01), Farmer
patent: 3840463 (1974-10-01), Froeschmann
patent: 4178258 (1979-12-01), Papay
patent: 4259254 (1981-03-01), Bridger
patent: 4789492 (1988-12-01), Katsumata et al.
patent: 4832867 (1989-05-01), Seiki et al.

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