US2008139425A1PendingUtilityA1

Lubricating composition

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Individually held — no corporate assignee on recordPriority: Dec 11, 2006Filed: Dec 11, 2006Published: Jun 12, 2008
Est. expiryDec 11, 2026(~0.4 yrs left)· nominal 20-yr term from priority
Inventors:David A. HutchisonRobert T. Dittmeier
C10N 2030/02C10N 2030/12C10N 2030/42C10N 2040/02C10M 133/44C10N 2030/10C10N 2040/25C10M 2215/08C10N 2040/252
49
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Claims

Abstract

The present application is directed to additive package compositions and lubricant compositions comprising a hydrocarbyl substituted triazole compound. Methods of using the compositions to lubricate a machine and provide lead corrosion protection are also disclosed.

Claims

exact text as granted — not AI-modified
1 . An additive package composition comprising:
 a diluent; and   a hydrocarbyl substituted triazole compound,   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, and   with the further proviso that the composition is substantially free of compounds containing phosphorus.   
     
     
         2 . The additive package composition of  claim 1 , wherein the triazole compound is present in an amount ranging from about 0.1 wt % to about 5 wt % relative to the total weight of the additive package composition. 
     
     
         3 . 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. 
     
     
         4 . The additive package composition of  claim 1 , wherein the triazole compound is a 1,2,4-triazole compound. 
     
     
         5 . The additive package composition of  claim 4 , 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. 
       
     
     
         6 . The additive package composition of  claim 5 , wherein R 1  is a linear or branched hydrocarbyl group, and where R 2  and R 3  are hydrogen atoms. 
     
     
         7 . 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. 
     
     
         8 . The additive package composition of  claim 7 , wherein R′ and R″ are independently chosen from C 4  to C 12  linear or branched alkyl groups. 
     
     
         9 . A lubricant composition comprising:
 a major amount of a base oil; and   a minor amount of a hydrocarbyl substituted triazole compound,   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, and   with the further proviso that the composition is substantially free of compounds containing phosphorus.   
     
     
         10 . The lubricant of  claim 9 , wherein the triazole compound is a 1,2,4-triazole compound. 
     
     
         11 . The lubricant of  claim 10 , 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. 
       
     
     
         12 . The lubricant of  claim 11 , wherein R 1  is a linear,or branched hydrocarbyl group, and where R 2  and R 3  are hydrogen atoms. 
     
     
         13 . The lubricant of  claim 9 , 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. 
       
     
     
         14 . The lubricant of  claim 13 , wherein R′ and R″ are independently chosen from C 4  to C 12  linear or branched alkyl groups. 
     
     
         15 . The lubricant of  claim 9 , wherein the triazole compound is present in an amount ranging from about 0.005 wt. % to about 0.5 wt. %, relative to the total weight of the composition. 
     
     
         16 . The lubricant of  claim 9 , 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. 
     
     
         17 . A method of improving lead corrosion protection of a lubricant composition, the method comprising:
 providing to a machine a lubricant composition comprising a major amount of a base oil; and a minor amount of a triazole compound, 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, and with the further proviso that the composition is substantially free of compounds containing phosphorus,   wherein the lubricant composition provides improved lead corrosion protection as compared to the same composition that is devoid of the triazole compound, where both compositions are employed under the same machine operating conditions over the same period of time.   
     
     
         18 . The method of  claim 17 , wherein the triazole compound is a 1,2,4-triazole compound. 
     
     
         19 . The method of  claim 17 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines. 
     
     
         20 . The method of  claim 19 , 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. 
     
     
         21 . The method of  claim 17 , wherein the machine is a medium speed diesel engine. 
     
     
         22 . A method for operating a machine comprising:
 providing to a machine a lubricant composition comprising a major amount of a base oil; and a minor amount of a triazole compound, 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, and with the further proviso that the composition is substantially free of compounds containing phosphorus.   
     
     
         23 . The method of  claim 22 , wherein the machine is selected from the group consisting of spark ignition and compression-ignition internal combustion engines. 
     
     
         24 . The method of  claim 23 , 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. 
     
     
         25 . The method of  claim 22 , wherein the machine is a medium speed diesel engine. 
     
     
         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 a triazole compound,   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, and with the further proviso that the composition is substantially free of compounds containing phosphorus.   
     
     
         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 . An additive package composition comprising:
 a diluent; and   a triazole 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. 
       
     
     
         31 . The additive package composition of  claim 30 , wherein the additive package is essentially free of zinc dialkyldithiophosphates. 
     
     
         32 . The additive package composition of  claim 30 , wherein the triazole compound is present in an amount ranging from about 0.1 wt % to about 5 wt % relative to the total weight of the additive package composition. 
     
     
         33 . The additive package composition of  claim 30 , 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. 
     
     
         34 . The additive package composition of  claim 30 , wherein R′ and R″ are independently chosen from C 4  to C 12  linear or branched alkyl groups. 
     
     
         35 . A lubricant composition comprising:
 a major amount of a base oil; and   a minor amount of a triazole 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. 
       
     
     
         36 . The lubricant of  claim 35 , wherein the lubricant is essentially free of zinc dialkyldithiophosphate. 
     
     
         37 . The lubricant of  claim 35 , wherein R′ and R″ are independently chosen from C 4  to C 12  linear or branched alkyl groups. 
     
     
         38 . The lubricant of  claim 35 , wherein the triazole compound is present in an amount ranging from about 0.005 wt. % to about 0.5 wt. %, relative to the total weight of the composition. 
     
     
         39 . The lubricant of  claim 35 , 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.

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