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US 4,152,275 AGranted
Sulfurized olefin adducts of phosphorodithioic acids and organic compositions containing same
AssigneeMobil Oil Corporation
InventorsAndrew G. Horodysky, Milton Braid
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Abstract
A novel product formed by the reaction of dialkyl or diaryl phosphorodithioic acid and a sulfurized olefin possesses good copper corrosivity, good antiwear and antioxidant activity. Organic compositions containing a minor amount thereof also possess good lubricating characteristics.
Claims36
An organothiophosphorus compound comprising the reaction product of a phosphorodithioic acid having the general formula:
- ##STR2## wherein R and R' are hydrocarbyl, R and R' may be the same or different with each having up to about 30 carbon atoms, and a sulfurized olefin having from about 2 to 8 carbon atoms and having at least about 25-35 wt. % of combined sulfur and sufficient reactive olefinic sites to react with said acid whereby the resultant organothiophosphorous compound has from about 0.1 to 5-10 wt. % of phosphorous.
Dependencies are inferred from the claim text.