Lubricating compositions, greases, aqueous fluids containing organic ammonium thiosulfates
AssigneeThe Lubrizol Corporation
InventorsCraig D. Tipton, Daniel E. Barrer, Nai Z. Huang, John M. Cahoon
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Abstract
This invention relates to a composition comprising a major amount of an oil of lubricating viscosity, and (A) an organic ammonium thiosulfate. The lubricating composition is either free of added lead containing compounds or additionally contains (B) a phosphorus or boron antiwear/extreme pressure agent, or both. The invention also includes greases and aqueous fluids containing organic ammonium thiosulfates. These compositions have improved antiwear, antiweld, extreme pressure and/or friction properties.
Claims25
A lubricating composition comprising a major amount of an oil of lubricating viscosity, and (A) an organic ammonium thiosulfate, wherein said lubricating composition is free of additives which contain lead.
A lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an organic ammonium thiosulfate, and (B) a phosphorus or boron antiwear/extreme pressure agent, wherein said lubricating composition is free of additives which contain lead.
A gear composition comprising a major amount of an oil of lubricating viscosity, and an antiwear/extreme pressure effective amount of the combination of (A) an organic ammonium thiosulfate, and (B) a phosphorus or boron antiwear/extreme pressure agent, wherein said gear composition is free of additives which contain lead.
An aqueous functional fluid comprising water, an organic ammonium thiosulfate, and an emulsifier, wherein said aqueous functional fluid is free of additives which contain lead.
A grease composition comprising an oil of lubricating viscosity, (A) an organic ammonium thiosulfate, and (B) a thickening agent, wherein said grease composition is free of additives which contain lead.
Dependencies are inferred from the claim text.