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US 4,410,434 AGranted
Metal salts of phosphosulfurized polyhydroxyesters and lubricants containing same
AssigneeMobil Oil Corporation
InventorsHarry J. Andress, Jr., Andrew G. Horodysky, Joan M. Kaminski
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Abstract
The invention herein is concerned with novel compositions of matter made by reacting phosphorus pentasulfide with a polyhydroxyester and then followed by reaction with a salt-forming metal-containing compound and lubricant compositions containing same.
Claims18
A compound prepared by
- (1) reacting at a temperature of from about 60.degree. C. to 140.degree. C., about 1 mole of a phosphorus polysulfide with from about 2 to about 12 moles of an ester or mixtures of esters of the formula ##STR6## where R" is hydrocarbyl containing 2 to 30 carbon atoms, R' is hydrogen or a lower alkyl containing 1 to 6 carbon atoms, M is oxygen or sulfur, x is 1 to 5, y is 1 to 3 and Y' is hydrogen or (CHR'SCOR").sub.y and
- (2) reacting the product of (1) at a temperature of from about 50.degree. C. to about 125.degree. C. with from about a stoichiometric amount to a 100% excess of a salt-forming metal-containing compound wherein the metal in said metal-containing compound is selected from the group consisting of manganese, metals from Groups IIA, IIB, VIB or VIII of the Periodic Chart and mixtures thereof.
A composition comprising a major proportion of an oil of lubricating viscosity or grease prepared therefrom and a minor friction reducing amount of a compound prepared by
- (1) reacting at a temperature of from about 60.degree. C. to about 140.degree. C., one mole of a phosphorus polysulfide with from about 2 to about 12 moles of an ester or mixtures of esters of the formula ##STR10## where R" is hydrocarbyl containing 2 to 30 carbon atoms, R' is hydrogen or a lower alkyl containing 1 to 6 carbon atoms, M is oxygen or sulfur, x is 1 to 5, y is 1 to 3 and Y' is hydrogen or (CHR'SCOR").sub.y and
- (2) reacting the product of (1) at a temperature of from about 50.degree. C. to about 125.degree. C. with from about stoichiometric amounts to a 100% excess of a salt-forming metal-containing compound wherein the metal in said metal-containing compound is selected from the group consisting of manganese, metals from Groups IIA, IIB, VIB or VIII of the Periodic Chart and mixtures thereof.
Dependencies are inferred from the claim text.