Sulfide- and polysulfide-containing lubricating oil additive compositions and lubricating compositions containing the same
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United States of America Patent
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Feb 10, 2004
Grant Date -
Sep 11, 2003
app pub date -
Mar 5, 2002
filing date -
Mar 5, 2002
priority date (Note) -
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Abstract
This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, at least one organic polysulfide comprising less than about 88% dihydrocarbyl trisulfide, from up to about 5% dihydrocarbyl disulfide, and more than about 7 wt. % dihydrocarbyl higher polysulfides, and at least one phosphorus or boron compound, or mixtures of two or more thereof. The invention also relates to concentrates and greases containing the above combination. The invention also relates to methods of making the organic polysulfide.
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