Lubricating composition

Abstract

The present application is directed to additive package compositions including a diluent; a hydrocarbyl substituted triazole compound; and an amide formed by reacting an amine compound chosen from guanidines, ureas and thioureas with a C 5 to C 60 aliphatic carboxylic acid, with the proviso that the triazole compound is not an alkyl bis-3-amino-1,2,4-triazole or an oleyl-1,2,4-triazole-3-amine. Lubricant compositions and methods of employing the lubricant compositions are also disclosed.

1 . An additive package composition comprising:
 a diluent;   a hydrocarbyl substituted triazole compound; and   an amide formed by reacting an amine compound chosen from guanidines, ureas and thioureas with a C 5  to C 60  aliphatic carboxylic acid,   with the proviso that the triazole compound is not an alkyl bis-3-amino-1,2,4-triazole or an oleyl-1,2,4-triazole-3-amine.   
     
     
         2 . The additive package composition of  claim 1 , wherein the triazole compound is a 1,2,4-triazole compound. 
     
     
         3 . The additive package composition of  claim 2 , wherein the 1,2,4-triazole compound is a compound of formula I: 
       
         
           
           
               
               
           
         
         where R 1 , R 2  and R 3  are independently chosen from a hydrogen atom and a hydrocarbyl group having at least 3 carbon atoms. 
       
     
     
         4 . The additive package composition of  claim 3 , wherein R 1  is a linear or branched hydrocarbyl group, and where R 2  and R 3  are hydrogen atoms. 
     
     
         5 . The additive package composition of  claim 1 , wherein the triazole compound is a compound of the formula II, 
       
         
           
           
               
               
           
         
       
       where R′ and R″ are independently chosen from hydrogen and a C 2  to C 50  linear or branched alkyl group, with the proviso that at least one of R′ and R″ is not hydrogen. 
     
     
         6 . The additive package composition of  claim 5 , wherein the amine is a compound of the general formulae III, or salts thereof: 
       
         
           
           
               
               
           
         
         where X is NR 5 , O or S, wherein R 5  is H or C 1  to C 15  hydrocarbyl; and
 R 4  is H, —NR 7 R 8  or C 1  to C 20  hydrocarbyl or hydroxyl-substituted hydrocarbyl, wherein R 7  and R 8  can be the same or different and are H or C 1  to C 20  hydrocarbyl or hydroxyl-substituted hydrocarbyl. 
 
       
     
     
         7 . The additive package composition of  claim 5 , wherein R′ and R″ are independently chosen from C 4  to C 12  linear or branched alkyl groups. 
     
     
         8 . The additive package composition of  claim 7 , wherein the amine compound is a salt of aminoguanidine and the aliphatic carboxylic acid is a C 16  to C 26  fatty acid. 
     
     
         9 . The additive package composition of  claim 7 , wherein the amine compound is aminoguanidine bicarbonate and the aliphatic carboxylic acid is oleic acid. 
     
     
         10 . The additive package composition of  claim 1 , wherein the amine is a compound of the general formulae III, or salts thereof: 
       
         
           
           
               
               
           
         
         where X is NR 5 , O or S, wherein R 5  is H or C 1  to C 15  hydrocarbyl; and
 R 4  is H, —NR 7 R 8  or C 1  to C 20  hydrocarbyl or hydroxyl-substituted hydrocarbyl, wherein R 7  and R 8  can be the same or different and are H or C 1  to C 20  hydrocarbyl or hydroxyl-substituted hydrocarbyl. 
 
       
     
     
         11 . The additive package composition of  claim 1 , wherein the amine compound is a salt of aminoguanidine and the aliphatic carboxylic acid is a C 16  to C 26  fatty acid. 
     
     
         12 . The additive package composition of  claim 1 , wherein the amine compound is aminoguanidine bicarbonate and the aliphatic carboxylic acid is oleic acid. 
     
     
         13 . The additive package composition of  claim 1 , wherein the triazole compound is present in an amount ranging from about 400 ppmw or greater, and the amide is present in an amount ranging from about 2 wt. % to about 15 wt. %. 
     
     
         14 . The additive package composition of  claim 1 , further comprising one or more additional additives chosen from dispersants, detergents, anti-wear agents, supplemental antioxidants, viscosity index improvers, pour point depressants, corrosion inhibitors, rust inhibitors, foam inhibitors, anti-swell agents and friction modifiers. 
     
     
         15 . A lubricant composition comprising:
 a major amount of a base oil; and   a minor amount of a hydrocarbyl substituted triazole compound and an amide formed by reacting an amine compound chosen from guanidines, ureas and thioureas with a C 5  to C 60  aliphatic carboxylic acid,
 with the proviso that the triazole compound is not an alkyl bis-3-amino-1,2,4-triazole or an oleyl-1,2,4-triazole-3-amine. 
   
     
     
         16 . The lubricant of  claim 15 , wherein the triazole compound is a 1,2,4-triazole compound. 
     
     
         17 . The lubricant of  claim 16 , wherein the 1,2,4-triazole compound is a compound of formula l: 
       
         
           
           
               
               
           
         
         where R 1 , R 2  and R 3  are independently chosen from a hydrogen atom and a hydrocarbyl group having at least 3 carbon atoms. 
       
     
     
         18 . The lubricant of  claim 17 , wherein R 1  is a linear, or branched hydrocarbyl group, and where R 2  and R 3  are hydrogen atoms. 
     
     
         19 . The lubricant of  claim 15 , wherein the triazole compound is a compound of the formula II, 
       
         
           
           
               
               
           
         
         where R′ and R″ are independently chosen from hydrogen and a C 2  to C 50  linear or branched alkyl group, with the proviso that at least one of R′ and R″ is not hydrogen. 
       
     
     
         20 . The lubricant of  claim 19 , wherein R′ and R″ are independently chosen from C 4  to C 12  linear or branched alkyl groups. 
     
     
         21 . The lubricant of  claim 15 , wherein the amine is a compound of the general formulae III, or salts thereof: 
       
         
           
           
               
               
           
         
         where X is NR 5 , O or S, wherein R 5  is H or C 1  to C 15  hydrocarbyl; and
 R 4  is H, —NR 7 R 8  or C 1  to C 20  hydrocarbyl or hydroxyl-substituted hydrocarbyl, wherein R 7  and R 8  can be the same or different and are H or C 1  to C 20  hydrocarbyl or hydroxyl-substituted hydrocarbyl. 
 
       
     
     
         22 . The lubricant of  claim 15 , wherein the amine compound is a salt of aminoguanidine and the aliphatic carboxylic acid is a C 16  to C 26  fatty acid. 
     
     
         23 . The lubricant of  claim 15 , wherein the amine compound is aminoguanidine bicarbonate and the aliphatic carboxylic acid is oleic acid. 
     
     
         24 . The lubricant of  claim 15 , wherein the triazole compound is present in an amount ranging from about 50 ppmw to about 20,000 ppmw and the amide is present in an amount ranging from about 0.5 wt. % to about 5 wt. %, relative to the total weight of the composition. 
     
     
         25 . The lubricant of  claim 15 , further comprising at least one additive selected from the group consisting of dispersants, anti-wear agents, antioxidants, friction modifiers, anti-foam agents, pour point depressants and viscosity index improvers. 
     
     
         26 . A method of improving lead corrosion protection of a lubricant composition, the method comprising:
 providing to a machine a lubricant composition of  claim 15 ,   wherein the lubricant composition provides improved lead corrosion protection as compared to the same composition that does not contain both the hydrocarbyl substituted triazole compound and the amide, where both compositions are employed under the same machine operating conditions over the same period of time.   
     
     
         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 . The method of  claim 27 , wherein the engine is selected from the group consisting of diesel engines, marine engines, rotary engines, turbine engines, locomotive engines, propulsion engines, aviation piston engines, stationary power generation engines, continuous power generation engines, engines comprising silver parts, and engines comprising lead parts. 
     
     
         29 . The method of  claim 26 , wherein the machine is a medium speed diesel engine. 
     
     
         30 . A method for operating a machine comprising:
 providing to a machine the lubricant composition of  claim 15 .   
     
     
         31 . The method of  claim 30 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines. 
     
     
         32 . The method of  claim 31 , wherein the engine is selected from the group consisting of diesel engines, marine engines, rotary engines, turbine engines, locomotive engines, propulsion engines, aviation piston engines, stationary power generation engines, continuous power generation engines, engines comprising silver parts, and engines comprising lead parts. 
     
     
         33 . The method of  claim 30 , wherein the machine is a medium speed diesel engine. 
     
     
         34 . A method of lubricating at least one moving part of a machine, said method comprising:
 contacting the at least one moving part with the lubricant composition of  claim 15 .   
     
     
         35 . The method of  claim 34 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines. 
     
     
         36 . The method of  claim 35 , wherein the engine is selected from the group consisting of diesel engines, marine engines, rotary engines, turbine engines, locomotive engines, propulsion engines, aviation piston engines, stationary power generation engines, continuous power generation engines, engines comprising silver parts, and engines comprising lead parts. 
     
     
         37 . The method of  claim 34 , wherein the machine is a medium speed diesel engine.