Lubricant compositions
AssigneeChevron Research Company
InventorBruce W. Hotten
Life of this patent
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Abstract
An extreme pressure lubricant is provided comprising a major portion of a lubricating oil or grease and a minor portion of an extreme pressure additive which is a partial amine of a di- or tricarboxylic acid of 21 to 100 carbon atoms alone or in combination with carbon or both of a hydrocarbylthioether and a phosphate ester.
Claims9
A lubricating composition comprising a major portion of lubricating oil or grease, and a minor portion, from about 0.2% to about 10% by weight of an extreme pressure additive, said additive comprising one part of (A) a partial amide derived from a C.sub.1 -C.sub.20 primary or secondary amine of a di- or tricarboxylic acid of from 18 to 80 carbon atoms, from 0.5 to 2 parts of (B) a thioether having a molecular weight in the range of 100 to 10,000 and a minimum sulfur content of 5% by weight, and from 0.5 to 2 parts of (C) a hydrocarbyl phosphate having a molecular weight in the range of 100 to 10,000.
Dependencies are inferred from the claim text.