Amine tungstates and lubricant compositions

The composition as described in claim 1, wherein the oil-soluble secondary diaryl amine is of the formula:

The lubricating oil composition as described in claim 1, further comprising one or more antioxidant, wherein the antioxidant is a copper, molybdenum, nickel, or zinc naphthenate, oleate, stearate, dialkyldithiophosphate, dialkyldithiocarbamate, or mixtures thereof.

The lubricating oil composition as described in claim 1, further comprising at least one of the following additives: a dispersant, a detergent, a friction modifier, an antiwear additive, a corrosion inhibitor, a metal deactivator, a fuel economy agent, and a viscosity index improver.

The composition of claim 1, wherein the at least one organoamine tungstate is prepared by any of the following reactionsn1) the reaction of a mixture of C16-C22 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ JM-T and ammonium ortho tungstate;2) the reaction of a mixture of C16-C22 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ JM-T and ammonium para tungstate;3) the reaction of the sulfate salt of a mixture of C16-C22 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ JM-T and sodium tungstatedihydrate;4) the reaction of a mixture of C16-C22 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ JM-T and tungstic acid hydrate derived from the reaction of sodium tungstate dihydrate with acid;5) the reaction of a mixture of C12-C14 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ 81-R and ammonium ortho tungstate;6) the reaction of a mixture of C12-C14 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ 81-R and ammonium paratungstate;7) the reaction of the sulfate salt of a mixture of C12-C14 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ 81-R and sodium tungstate dihydrate;8) the reaction of a mixture of C12-C14 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ 81-R and tungstic acid hydrate derived from the reaction of sodium tungstate dihydrate with acid.

The lubricating oil composition of claim 1, wherein the amine is:n(a) a primary amine of the formula:

The lubricating oil composition of claim 1, wherein the amine is a mixture of C16-C22 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ JM-T or a mixture of C12-C14 tert-alkyl primary aliphatic amines sold under the trademark PRIMENEâ„¢ 81-R.

The lubricating oil composition of claim 1, wherein the amine is:n(b) a tertiary amine of the formula:

The lubricating oil composition of claim 1, further comprising a phenolic antioxidant, a sulfur-containing antioxidant, a copper-containing antioxidant, a zinc-containing antioxidant, a nickel-containing antioxidant, a molybdenum-containing antioxidant, or mixtures thereof.

The lubricating oil composition of claim 1, further comprising a zinc dithiocarbamate, a nickel dithiocarbamate, a copper dithiocarbamate, a molybdenum dithiocarbamate, or mixtures thereof.

The lubricating oil composition of claim 1, further comprising one or more friction modifier comprising a glycerol monoester of a fatty acid, a glycerol diester of a fatty acid, a succinimide, a substituted succinimide, a glycolated succinimide, a borated succinimide, a fatty phosphate, a fatty acid amide, a fatty epoxide, a borated fatty epoxide, a borated glycerol ester, an alkoxylated fatty amine, a borated alkoxylated fatty amine, a metal salt of a fatty acid, a sulfurized olefin, a fatty imidazoline, a condensation product of a carboxylic acid and a polyalkylene-polyamine, a metal salt of an alkyl salicylate, and amine salt of an alkylphosphoric acid, or mixtures thereof.

The method as described in claim 6 further comprising including in the lubricating composition one or more antioxidant, wherein the antioxidant is a copper, molybdenum, nickel, or zinc naphthenate, oleate, stearate, dialkyldithiophosphate, dialkyldithiocarbamate, or mixtures thereof.

The method as described in claim 6, further comprising including in the lubricating composition at least one of the following additives: a dispersant, a detergent, a friction modifier, an antiwear additive, a corrosion inhibitor, a metal deactivator, a fuel economy agent, and a viscosity index improver.

The method of claim 6, further comprising adding to the lubricant composition a phenolic antioxidant, a sulfur-containing antioxidant, a copper-containing antioxidant, a zinc-containing antioxidant, a nickel-containing antioxidant, a molybdenum-containing antioxidant, or mixtures thereof.