Lubricating Composition
There is disclosed a lubricant composition comprising a major amount of a base oil and a minor amount of an additive composition comprising (i) a triazole compound substituted with an aryl moiety; (ii) a nitrogen-containing compound represented by the formula (I): wherein R 1 and R 2 are each independently selected from the group consisting of at least one aryl moiety comprising from about 6 to about 30 atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono; and (iii) a phenolic compound.
1 . An additive composition comprising:
(i) a triazole compound substituted with an aryl moiety;
(ii) a nitrogen-containing compound represented by the formula (I):
wherein R 1 and R 2 are each independently selected from the group consisting of at least one aryl moiety comprising from about 6 to about 30 atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono; and
(iii) a phenolic compound.
2 . The additive composition of claim 1 , wherein the triazole compound is substituted with a substituted aryl moiety comprising multiple rings.
3 . The additive composition of claim 1 , wherein the triazole compound is substituted with a substituted aryl moiety comprising a single ring.
4 . The additive composition of claim 1 , wherein the triazole compound is represented by the formula (II):
wherein R 3 is selected from the group consisting of hydrogen and an alkyl moiety comprising from about 1 to about 24 carbon atoms, and wherein R 4 is selected from the group consisting of hydrogen, an alkyl moiety comprising from about 1 to about 24 carbon atoms, and a substituted hydrocarbyl moiety.
5 . The additive composition of claim 1 , wherein the triazole compound is not an alkyl bis-3-amino-1,2,4-triazole.
6 . The additive composition of claim 1 , wherein the phenolic compound comprises an esterified reaction product of 2,6-di-tert-butyl phenol and an unsaturated carboxylic acid comprising at least one double bond and from about 3 to about 24 carbon atoms.
7 . The additive composition of claim 1 , wherein the phenolic compound is represented by the formula (III):
wherein R 5 and R 6 are each independently selected from the group consisting of hydrogen, an alkyl moiety comprising from about 1 to about 24 carbon atoms, and a cyclic moiety comprising from about 3 to about 12 carbon atoms, and R 7 is selected from the group consisting of hydrogen, alkyl, aryl, alkaryl, and (CH 2 ) n COOR 8 , wherein n is an integer from 1 to 4, inclusive and R 8 is an alkyl moiety comprising from about 1 to about 18 carbon atoms.
8 . The additive composition of claim 1 , wherein the phenolic compound is 3,5-di-tert-butyl-4-hydroxy phenol propionate.
9 . The additive composition of claim 1 , wherein the triazole compound is present in an amount ranging from about 0.48 wt. % to about 5 wt. %.
10 . The additive composition of claim 1 , wherein the nitrogen-containing compound is present in an amount ranging from about 2 wt. % to about 12 wt. %.
11 . The additive composition of claim 1 , wherein the phenolic compound is present in an amount ranging from about 0.5 wt. % to about 12 wt. %.
12 . The additive composition of claim 1 , further comprising at least one additive selected from the group consisting of phosphorus-containing compounds, dispersants, ash-containing detergents, ashless-detergents, overbased detergents, pour point depressing agents, viscosity index improving agents, ash-containing friction modifier, ashless friction modifier, nitrogen-containing friction modifier, nitrogen-free friction modifier, esterified friction modifier, extreme pressure agents, rust inhibitors, supplemental antioxidants, corrosion inhibitors, anti-foam agents, titanium compounds, titanium complexes, organic soluble molybdenum compounds, organic soluble molybdenum complexes, boron-containing compounds, and boron-containing complexes.
13 . A lubricant composition comprising:
a major amount of a base oil; and
a minor amount of an additive composition comprising
(i) a triazole compound substituted with an aryl moiety;
(ii) a nitrogen-containing compound represented by the formula (I):
wherein R 1 and R 2 are each independently selected from the group consisting of at least one aryl moiety comprising from about 6 to about 30 atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono; and
(iii) a phenolic compound.
14 . The lubricant composition of claim 13 , wherein the triazole compound is present in an amount ranging from about 0.05 wt. % to about 0.5 wt. %.
15 . The lubricant composition of claim 13 , wherein the triazole compound is present in an amount ranging from about 0.1 wt. % to about 0.3 wt. %.
16 . The lubricant composition of claim 13 , wherein the nitrogen-containing compound is present in an amount ranging from about 0.2 wt. % to about 1.2 wt. %.
17 . The lubricant composition of claim 13 , wherein the nitrogen-containing compound is present in an amount ranging from about 0.4 wt. % to about 1.0 wt. %.
18 . The lubricant composition of claim 13 , wherein the phenolic compound is present in an amount ranging from about 0.05 wt. % to about 1.2 wt. %.
19 . The lubricant composition of claim 13 , wherein the phenolic compound is present in an amount ranging from about 0.1 wt. % to about 12 wt. %.
20 . The lubricant composition of claim 13 , further comprising at least one additive selected from the group consisting of phosphorus-containing compounds, dispersants, ash-containing detergents, ashless-detergents, overbased detergents, pour point depressing agents, viscosity index improving agents, ash-containing friction modifier, ashless friction modifier, nitrogen-containing friction modifier, nitrogen-free friction modifier, esterified friction modifier, extreme pressure agents, rust inhibitors, supplemental antioxidants, corrosion inhibitors, anti-foam agents, titanium compounds, titanium complexes, organic soluble molybdenum compounds, organic soluble-molybdenum complexes, boron-containing compounds, and boron-containing complexes.
21 . The lubricant composition of claim 13 , further comprising at least one titanium-containing compound.
22 . The lubricant composition of claim 13 , further comprising a phosphorus-containing compound in an amount ranging from about 100 to about 1000 ppm of total phosphorus in a lubricant composition.
23 . The lubricant composition of claim 22 , wherein the phosphorus-containing compound is in a concentration ranging from about 600 to about 800 ppm of total phosphorus in the lubricant composition.
24 . The lubricant composition of claim 13 , wherein the lubricant composition is selected from the group consisting of passenger car motor oil, medium speed diesel engine oil, and heavy duty diesel engine oil.
25 . A method of delaying the onset of viscosity increase in a lubricant composition, said method comprising:
providing to a machine a lubricant composition comprising a major amount of a base oil; and a minor amount of an additive composition comprising:
(i) a triazole compound substituted with an aryl moiety;
(ii) a nitrogen-containing compound represented by the formula (I):
wherein R 1 and R 2 are each independently selected from the group consisting of at least one aryl moiety comprising from about 6 to about 30 atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono; and
(iii) a phenolic compound.
26 . The method of claim 25 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines.
27 . A method of lubricating at least one moving part of a machine, said method comprising:
contacting the at least one moving part with a lubricant composition comprising a major amount of a base oil; and a minor amount of an additive composition comprising:
(i) a triazole compound substituted with an aryl moiety;
(ii) a nitrogen-containing compound represented by the formula (I):
wherein R 1 and R 2 are each independently selected from the group consisting of at least one aryl moiety comprising from about 6 to about 30 atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono; and
(iii) a phenolic compound.
28 . The method of claim 27 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines.
29 . A method of operating a machine comprising:
adding to the machine a lubricating composition comprising a major amount of a base oil; and a minor amount of an additive composition comprising:
(i) a triazole compound substituted with an aryl moiety;
(ii) a nitrogen-containing compound represented by the formula (I):
wherein R 1 and R 2 are each independently selected from the group consisting of at least one aryl moiety comprising from about 6 to about 30 atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono; and
(iii) a phenolic compound.
30 . The method of claim 29 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines.