Metal working using lubricants containing basic alkaline earth metal salts
AssigneeThe Lubrizol Corporation
InventorJames N. Vinci
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Abstract
Lubricants useful in metal working processes, especially cutting, comprise (A) a lubricating oil and (B) a basic alkaline earth metal salt or borated complex thereof. Component B is preferably a basic calcium sulfonate prepared by a specific method. The lubricants may also contain at least one of (C) a specific active sulfur-containing compound and (D) a chlorinated wax.
Claims46
A method for lubricating metal during working thereof which comprises applying to said metal a water-free composition comprising (A) a major amount of a lubricating oil;
- (B) a minor amount of a basic alkaline earth metal salt of at least one acidic organic compound, or a borated complex of said basic alkaline earth metal salt;
- and (C) a minor amount of at least one sulfurization product of an aliphatic, arylaliphatic or alicyclic olefinic hydrocarbon containing from about 3 to about 30 carbon atoms, said sulfurization product containing active sulfur.
A metal workpiece having on the surface thereof a film of a composition comprising (A) a major amount of lubricating oil;
- (B) a minor amount of basic alkaline earth metal salt of at least one acidic organic compound, or of a borated complex of said basic alkaline earth metal salt;
- and (c) at least one sulfurization product or an aliphatic, arylaliphatic or alicyclic olefinic hydrocarbon containing from about 3 to about 30 carbon atoms, said sulfurization product containing a substantial amount of active sulfur.
A method for lubricating metal during working thereof which comprises applying to said metal a water-free composition comprising (A) a major amount of a lubricating oil;
- (B) a minor amount of a basic alkaline earth metal salt of at least one sulfonic carboxylic and organic phosphoric acids and phenols or a borated complex of said basic alkaline earth metal salt;
- and (C) a minor amount of at least one sulfurization product of an aliphatic, arylaliphatic or alicyclic olefinic hydrocarbon containing from about 3 to about 30 carbon atoms, said sulfurization product containing active sulfur.
Dependencies are inferred from the claim text.