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) at least one nitrogen containing compound chosen from an alkylated phenothiazine and a compound represented by the formula (I): wherein R 0 , R 1 and R 2 are each independently selected from the group consisting of an aryl moiety comprising from about 6 to about 30 carbon atoms, hydrogen, halogen, hydroxy, hydrocarbyl substituted hydrocarbyl, amino, amido, phosphoro, and sulfono, with the proviso that at least one of R 0 , R 1 and R 2 are chosen to be an aryl moiety comprising from about 6 to about 30 carbon atoms; ana (iii) a metal detergent with a soap/TBN ratio ranging from about 0.05 to about 1.5.

1 . An additive composition comprising:
 i. a triazole compound substituted with an aryl moiety;   ii. at least one nitrogen containing compound chosen from an alkylated phenothiazine and a compound represented by the formula (I):   
     
       
         
         
             
             
         
       
        wherein R 0 , R 1  and R 2  are each independently selected from the group consisting of an aryl moiety comprising from about 6 to about 30 carbon atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono, with the proviso that at least one of R 0 , R 1  and R 2  are chosen to be an aryl moiety comprising from about 6 to about 30 carbon atoms; and 
       iii. a metal detergent with a soap/TBN ratio ranging from about 0.05 to about 1.5. 
     
   
   
       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 nitrogen containing compound is a compound of Formula I, wherein two of the R 0 , R 1  and R 2  groups are phenyl groups. 
   
   
       6 . The additive composition of  claim 1 , wherein the nitrogen containing compound is an alkylated diphenylamine. 
   
   
       7 . The additive composition of  claim 1 , wherein the nitrogen containing compound is an alkylated phenothiazine. 
   
   
       8 . The additive composition of  claim 1 , wherein the soap/TBN ratio ranges from about 0.1 to about 1.4. 
   
   
       9 . The additive composition of  claim 1 , wherein the soap/TBN ratio ranges from about 0.15 to about 1. 
   
   
       10 . The additive composition of  claim 1 , wherein the detergent comprises at least one neutral sulfonate compound. 
   
   
       11 . The additive composition of  claim 10 , wherein the neutral sulfonate compound is present in an amount ranging from about 5 wt. % to about 20 wt. %, based on the weight of the additive composition. 
   
   
       12 . The additive composition of  claim 10 , wherein the neutral sulfonate compound is a compound of the formula III:
   R 5 —SO 3 M  (III)   where R 5  is a hydrocarbyl group and M is an element chosen from Group I or Group II metals or lead.   
   
   
       13 . The additive composition of  claim 12 , wherein R 5  is a substantially saturated, aliphatic compound containing from about 20 to 300 carbon atoms. 
   
   
       14 . The additive composition of  claim 12 , wherein R 5  is polyisobutylene. 
   
   
       15 . The additive composition of  claim 12 , wherein M is chosen from lithium, sodium, potassium, magnesium, calcium, strontium, barium, and zinc. 
   
   
       16 . 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. %, based on the weight of the additive composition. 
   
   
       17 . 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. %, based on the weight of the additive composition. 
   
   
       18 . The additive composition of  claim 1 , further comprising at least one additive selected from the group consisting of phosphorus-containing compounds, dispersants, ashless-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. 
   
   
       19 . The additive composition of  claim 1 , further comprising an oil soluble phosphorus compound having a concentration ranging from about 100 to about 1000 ppm. 
   
   
       20  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. at least one nitrogen containing compound chosen from an alkylated phenothiazine and a compound represented by the formula (I): 
   
     
       
         
         
             
             
         
       
       
          wherein R 0 , R 1  and R 2  are each independently selected from the group consisting of an aryl moiety comprising from about 6 to about 30 carbon atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono, with the proviso that at least one of R 0 , R 1  and R 2  are chosen to be an aryl moiety comprising from about 6 to about 30 carbon atoms; and 
         iii. a metal detergent with a soap/TBN ratio ranging from about 0.05 to about 1.5. 
       
     
   
   
       21 . The lubricant composition of  claim 20 , wherein the triazole compound is present in an amount ranging from about 0.05 wt. % to about 0.5 wt. %, based on the weight of the lubricant composition. 
   
   
       22 . The lubricant composition of  claim 20 , wherein the triazole compound is present in an amount ranging from about 0.1 wt. % to about 0.3 wt. %, based on the weight of the lubricant composition. 
   
   
       23 . The lubricant composition of  claim 20 , wherein the nitrogen-containing compound is present in an amount ranging from about 0.2 wt. % to about 1.2 wt. %, based on the weight of the lubricant composition. 
   
   
       24 . The lubricant composition of  claim 20 , wherein the nitrogen-containing compound is present in an amount ranging from about 0.4 wt.% to about 1.0 wt. %, based on the weight of the lubricant composition. 
   
   
       25 . The lubricant composition of  claim 20 , wherein the metal detergent comprises a neutral sulfonate compound, wherein the neutral sulfonate compound is present in the lubricant composition in an amount ranging from about 0.5 wt. % to about 2.0 wt. %, based on the weight of the lubricant composition. 
   
   
       26 . The lubricant composition of  claim 20 , further comprising at least one additive selected from the group consisting of phosphorus-containing compounds, dispersants, ashless-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, ana-foam agents, titanium compounds, titanium complexes, organic soluble molybdenum compounds, organic soluble molybdenum complexes, boron-containing compounds, and boron-containing complexes. 
   
   
       27 . The lubricant composition of  claim 20 , wherein the lubricant composition is selected from the group consisting of passenger oar motor oil, medium speed diesel engine oil, and heavy duty diesel engine oil. 
   
   
       28 . The lubricant composition of  claim 20 , further comprising at least one titanium compound. 
   
   
       29 . The lubricant composition of  claim 20 , further comprising a phosphorus-containing compound in an amount ranging from about 100 to about 1000 ppm of total phosphorus in a lubricant composition. 
   
   
       30 . The lubricant composition of  claim 20 , further comprising a phosphorus-containing compound in an amount ranging from about 600 to about 800 ppm of total phosphorus in a lubricant composition. 
   
   
       31 . The lubricant composition of  claim 20 , wherein the nitrogen containing compound is a compound of Formula I, wherein two of the R 0 , R 1  and R 2  groups are phenyl groups. 
   
   
       32 . The lubricant composition of  claim 20 , wherein the nitrogen containing compound is an alkylated diphenylamine. 
   
   
       33 . The lubricant composition of  claim 20 , wherein the nitrogen containing compound is an alkylated phenothiazine. 
   
   
       34 . The lubricant composition of  claim 20 , wherein the soap/TBN ratio ranges from about 0.1 to about 1.4. 
   
   
       35 . The lubricant composition of  claim 20 , wherein the detergent comprises at least one neutral sulfonate compound. 
   
   
       36 . The lubricant composition of  claim 20 , wherein the detergent comprises at least one neutral sulfonate compound of the formula III:
   R 5 —SO 3 M  (III)   where R 5  is a hydrocarbyl group and M is an element chosen from Group I or Group II metals or lead.   
   
   
       37 . The lubricant composition of  claim 36 , wherein R 5  is a substantially saturated, aliphatic compound containing from about 20 to 300 carbon atoms. 
   
   
       38 . The lubricant composition of  claim 36 , wherein is polyisobutylene. 
   
   
       39 . The lubricant composition of  claim 36 , wherein M is chosen from lithium, sodium, potassium, magnesium, calcium, strontium, barium, and zinc. 
   
   
       40 . 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. at least one nitrogen containing compound chosen from an alkylated phenothiazine and a compound represented by the formula (I): 
   
     
       
         
         
             
             
         
       
       
          wherein R 0 , R 1  and R 2  are each independently selected from the group consisting of an aryl moiety comprising from about 6 to about 30 carbon atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono, with the proviso that at least one of R 0 , R 1  and R 2  are chosen to be an aryl moiety comprising from about 6 to about 30 carbon atoms; and 
         iii. a metal detergent with a soap/TBN ratio ranging from about 0.05 to about 1.5. 
       
     
   
   
       41 . The method of  claim 40 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines. 
   
   
       42 . A method of lubricating at least one moving pad 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. at least one nitrogen containing compound chosen from en alkylated phenothiazine and a compound represented by the formula (I): 
   
     
       
         
         
             
             
         
       
       
          wherein R 0 , R 1  and R 2  are each independently selected from the group consisting of an aryl moiety comprising from about 6 to about 30 carbon atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono, with the proviso that at least one of R 0 , R 1  and R 2  are chosen to be an aryl moiety comprising from about 6 to about 30 carbon atoms; and 
         iii. a metal detergent with a soap/TBN ratio ranging from about 0.05 to about 1.5. 
       
     
   
   
       43 . The method of  claim 42 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines. 
   
   
       44 . 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. at least one nitrogen containing compound chosen from an alkylated phenothiazine and a compound represented by the formula (I): 
   
     
       
         
         
             
             
         
       
       
          wherein R 0 , R 1  and R 2  are each independently selected from the group consisting of an aryl moiety comprising from about 6 to about 30 carbon atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono, with the proviso that at least one of R 0 , R 1  and R 2  are chosen to be an aryl moiety comprising from about 6 to about 30 carbon atoms; and 
         iii. a metal detergent with a soap/TBN ratio ranging from about 0.05 to about 1.5. 
       
     
   
   
       45 . The method of  claim 44 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines.