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U.S. Department of Energy
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Molybdenum complexes of ashless polyol ester dispersants as friction-reducing antiwear additives for lubricating oils

Patent ·
OSTI ID:6796804
An oil-soluble molybdenum complex of an ashless polyol ester dispersant, preferably of oil-soluble reaction product of a molybdenum compound such as molybdic acid with about 1 to 2 molar equivalents of a polyol ester of a hydrocarbon substituted diacid material such as polybutenyl succinic anhydride or a thio-bis(Hydrocarbyl substituted diacid material), such as thio-bis(Polyalkyl lactone acid) and/or their precursors, the adducts of sulfur chloride and unsaturated diacid materials, E.G., 4,8-bispolyalkyl-4,8-dichloro-6-thiaundecane-1,2,10,11-tetracarboxylic acid bis-anhydride and their dehydrochlorinated analogs, is a useful additive to a lubricating oil since both the sludge dispersant and antifriction properties of said oil are enhanced.
Assignee:
Exxon Research And Engineering Co
Patent Number(s):
US 4239633
OSTI ID:
6796804
Country of Publication:
United States
Language:
English