Metal cutting oil and method for using same
AssigneeAtlantic Richfield Company
InventorDominic A. Apikos
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Abstract
An improved transparent lubricating oil composition, e.g., useful as a high severity metal cutting oil, comprises a major amount of oil of lubricating viscosity; a minor, effective amount of at least one sulfur-containing compound; and a minor, effective amount of elemental sulfur. Both the sulfur-containing compound and the sulfur are present in amounts to be soluble in the composition and the combination of sulfur-containing compound and elemental sulfur is present in an amount effective to improve the extreme pressure properties of the composition. Improved methods of metal working using such compositions are also disclosed.
Claims24
A lubricating oil composition comprising a major amount of mineral oil of lubricating viscosity;
- a minor, effective amount of at least one added sulfur-containing compound;
- a minor, effective amount of elemental sulfur, said sulfur-containing compound and said elemental sulfur being present each individually in an amount soluble in said composition at 40.degree. F. and being present in combination in an amount effective to improve the extreme pressure properties of said composition and a minor, effective amount of at least one ester component to improve the lubricity of said composition and to increase the solubility of elemental sulfur in said composition, said composition being transparent.
Dependencies are inferred from the claim text.