Patent ID: 8058317

Claim:
A process of using a water-dispersible extreme-pressure additive which comprises the steps of: nitrating at least one moiety selected from the group consisting of C 2 -C 30 unsaturated fatty acids, C 2 -C 30 unsaturated fatty oils, esters derived from the reaction of C 1 -C 20 alcohols with unsaturated C 2 -C 30 fatty acids, polyglycol esters of C 2 -C 30 unsaturated fatty acids, polymers derived from C 2 -C 20 olefins, polymers derived from C 4 -C 20 diolefins, C 8 -C 20 copolymers derived from polyolefins and vinyl aromatics, C 4 -C 30 alkylated phenols, C 4 -C 28 internal or terminal olefins, said nitrated moiety further having a terminal carboxylic acid group; adding at least one emulsifier or surfactant selected from the group consisting of an alcohol amine or an alkylene ether glycol to said carboxylic acid group of said nitrated moiety to make said nitrated moiety water-dispersible; adding said nitrated moiety to an oil-based lubricant; and adding at least one non-chlorine containing moiety to said oil-based lubricant, a combination of said non-chlorine containing moiety and said nitrated moiety improving a performance of said extreme-pressure, water-dispersible additive in at least one physical characteristic when compared to using said additive without said combination and further wherein said non-chlorine containing moiety is selected from the group consisting of a sulfur-containing moiety and a phosphorus-containing moiety.