Lubricating oil composition

Abstract

A lubricating oil composition is disclosed containing base oil, oleylamide and one or more ether compounds. A method of lubricating an internal combustion engine is also disclosed.

1 . A lubricating oil composition comprising base oil, oleylamide and at least one ether compound.  
   
   
       2 . The lubricating oil composition of  claim 1  wherein the ether compound is a non-cyclic ether.  
   
   
       3 . The lubricating oil composition of  claim 1  wherein the ether compound is a compound of formula I,  
     
       
         
         
             
             
         
       
     
     wherein R 1 , R 2  and R 3  are each, independently, selected from alkyl groups having from 10 to 30 carbon atoms, unsaturated hydrocarbon groups having from 10 to 30 carbon atoms and hydrogen.  
   
   
       4 . The lubricating oil composition of  claim 1  wherein the ether compound is selected from the group consisting of glycerin oleyl monoether, glycerin oleyl diether, glycerin oleyl triether, glycerin stearyl monoether, glycerin stearyl diether, glycerin stearyl triether and mixtures thereof.  
   
   
       5 . The lubricating oil composition of  claim 1  wherein the ether compound is present in an amount in the range of from 0.1 to 5 wt. %, based on the total weight of the lubricating oil composition.  
   
   
       6 . The lubricating oil composition of  claim 2  wherein the ether compound is present in an amount in the range of from 0.1 to 5 wt. %, based on the total weight of the lubricating oil composition.  
   
   
       7 . The lubricating oil composition of  claim 3  wherein the ether compound is present in an amount in the range of from 0.1 to 5 wt. %, based on the total weight of the lubricating oil composition.  
   
   
       8 . The lubricating oil composition of  claim 1  wherein oleylamide is present in an amount in the range of from 0.05 to 0.5 wt. %, based on the total weight of the lubricating oil composition.  
   
   
       9 . The lubricating oil composition of  claim 2  wherein oleylamide is present in an amount in the range of from 0.05 to 0.5 wt. %, based on the total weight of the lubricating oil composition.  
   
   
       10 . The lubricating oil composition of  claim 1  wherein said composition further comprises at least one nitrile compound.  
   
   
       11 . The lubricating oil composition of  claim 10  wherein the nitrile compound is present in an amount in the range of from 0.1 to 0.8 wt. %, based on the total weight of the lubricating oil composition.  
   
   
       12 . The lubricating oil composition of  claim 10  wherein said nitrile compound is selected from the group consisting of coconut fatty acid nitriles, oleylnitrile, decanenitrile, tallow nitrites, and mixtures thereof.  
   
   
       13 . The lubricating oil composition of  claim 2  wherein said composition further comprises at least one nitrile compound.  
   
   
       14 . A lubricating oil composition comprising: (a) base oil; (b) 0.05 to 0.5 wt %, based on the total weight of the lubricating oil composition, of oleylamide; and (c) 0.1 to 5 wt %, based on the total weight of the lubricating oil composition, of at least one ether compound having formula I,  
     
       
         
         
             
             
         
       
     
     wherein R 1 , R 2  and R 3  are each, independently, selected from alkyl groups having from 10 to 30 carbon atoms, unsaturated hydrocarbon groups having from 10 to 30 carbon atoms and hydrogen.  
   
   
       15 . A method of lubricating an internal combustion engine comprising applying a lubricating oil composition of  claim 1  to the internal combustion engine.  
   
   
       16 . A method of lubricating an internal combustion engine comprising applying a lubricating oil composition of  claim 2  to the internal combustion engine.  
   
   
       17 . A method of lubricating an internal combustion engine comprising applying a lubricating oil composition of  claim 3  to the internal combustion engine.