Lubricating Composition

Abstract

There is disclosed a lubricant composition comprising 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 sulfurized 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 sulfurized 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 sulfurized compound is selected from the group consisting of sulfurized olefins, sulfurized fatty oils, and combinations thereof. 
     
     
         6 . The additive composition of  claim 5 , wherein the sulfurized olefin is selected from the group consisting of sulfurized alpha-olefins, sulfurized isomerized alpha-olefins, sulfurized branched olefins, sulfurized cyclic olefins, and combinations thereof. 
     
     
         7 . The additive composition of  claim 5 , wherein the sulfurized fatty oil is selected from the group consisting of sulfurized corn oil, sulfurized canola oil, sulfurized cottonseed oil, sulfurized grapeseed oil, sulfurized olive oil, sulfurized palm oil, sulfurized peanut oil, sulfurized coconut oil, sulfurized rapeseed oil, sulfurized sesame seed oil, sulfurized soybean oil, sulfurized sunflower seed oil, sulfurized tallow, sulfurized fish oil and combinations thereof. 
     
     
         8 . 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. %. 
     
     
         9 . 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. %. 
     
     
         10 . The additive composition of  claim 1 , wherein the sulfur-containing compound is present in an amount ranging from about 4 wt. % to about 12 wt. %. 
     
     
         11 . 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. 
     
     
         12 . 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 sulfurized compound. 
       
     
     
         13 . The lubricant composition of  claim 12 , wherein the triazole compound is present in an amount ranging from about 0.05 wt. % to about 0.5 wt. %. 
     
     
         14 . The lubricant composition of  claim 12 , wherein the triazole compound is present in an amount ranging from about 0.1 wt. % to about 0.3 wt. %. 
     
     
         15 . The lubricant composition of  claim 12 , wherein the nitrogen-containing compound is present in an amount ranging from about 0.2 wt. % to about 1.2 wt. %. 
     
     
         16 . The lubricant composition of  claim 12 , wherein the nitrogen-containing compound is present in an amount ranging from about 0.4 wt. % to about 1.0 wt. %. 
     
     
         17 . The lubricant composition of  claim 12 , wherein the sulfurized compound is present in an amount ranging from about 0.4 wt. % to about 1.2 wt. %. 
     
     
         18 . The lubricant composition of  claim 12 , wherein the sulfurized compound is present in an amount ranging from about 0.6 wt. % to about 1.0 wt. %. 
     
     
         19 . The lubricant composition of  claim 12 , 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. 
     
     
         20 . The lubricant composition of  claim 12 , 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. 
     
     
         21 . The lubricant composition of  claim 12 , further comprising at least one titanium compound. 
     
     
         22 . The lubricant composition of  claim 12 , 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 12 , further comprising a phosphorus-containing compound in an amount ranging from about 600 to about 800 ppm of total phosphorus in a lubricant composition. 
     
     
         24 . 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 sulfurized compound. 
       
     
     
         25 . The method of  claim 24 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines. 
     
     
         26 . 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 sulfurized compound. 
         
       
     
     
         27 . The method of  claim 26 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines. 
     
     
         28 . 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 sulfurized compound. 
         
       
     
     
         29 . The method of  claim 28 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines.