Less corrosive organic compounds as lubricant additives

Abstract

where R1 consists of a mixture of at least one unsaturated or branched hydrocarbon chain and at least one saturated or unbranched hydrocarbon chain, R2 is either a hydrogen atom or a hydrocarbon chain, and m and n are independently from 1 to 5, when used in a lubricating composition, being effective for friction and wear reduction, while providing improved protection against copper and lead corrosion in an engine.

What is claimed is: 
     
         1 . A mixture of compounds, in which the mixture is a liquid at room temperature, the mixture of compounds being the reaction product of
 (a) a mixture of carboxylic acids or esters, wherein said mixture comprises at least one first compound having a hydrocarbon chain which is unsaturated or branched, and at least one second compound having a hydrocarbon chain which is saturated and unbranched;   (b) one of (i) 2-aminoethylethanolamine, (ii) alkyloxypropyl-1,3-diaminopropane, (iii) alkyloxyethyl-1,3-diaminopropane, and (iv) alkyloxypropyl-1,2-diaminoethane; and   (c) glycidol.   
     
     
         2 . The mixture of  claim 1 , wherein (b) is 2-aminoethylethanolamine. 
     
     
         3 . The mixture of  claim 1 , wherein (b) is alkyloxypropyl-1,3-diaminopropane. 
     
     
         4 . The mixture of  claim 1 , wherein (a) is coconut oil acid or an ester of coconut oil acid and (b) is 2-aminoethyl-ethanolamine. 
     
     
         5 . The mixture of  claim 1 , wherein (a) is coconut oil acid or an ester of coconut oil acid and (b) is alkyloxypropyl-1,3-diaminopropane. 
     
     
         6 . A liquid composition of matter represented by the following formula: 
       
         
           
           
               
               
           
         
       
       where R1 is an unsaturated or branched hydrocarbon chain, R2 is either a hydrogen atom or a hydrocarbon chain, and m and n are independently from 1 to 5. 
     
     
         7 . The composition of matter of  claim 6 , wherein the composition is one of:
 N-[2-[(2,3-dihydroxypropyl)(2-hydroxyethyl)amino]ethyl]isostearamide;   N-[2-[(2,3-dihydroxypropyl)(2-hydroxyethyl)amino]ethyl]oleamide;   N-[3-[(2,3-dihydroxypropyl)(3-alkyloxypropyl)amino]propyl]isostearamide;   and   N-[3-[(2,3-dihydroxypropyl)(3-alkyloxypropyl)amino]propyl]oleamide.   
     
     
         8 . A mixture of compounds, in which the mixture is a liquid at room temperature, the compounds of said mixture being represented by the following formula: 
       
         
           
           
               
               
           
         
       
       wherein said mixture comprises at least one first compound having a hydrocarbon chain which is unsaturated or branched, and at least one second compound having a hydrocarbon chain which is saturated and unbranched; and where, R2 is either a hydrogen atom or a hydrocarbon chain, and m and n are independently from 1 to 5. 
     
     
         9 . The mixture of compounds of  claim 8 , being one of:
 N-[2-[(2,3-dihydroxypropyl)(2-hydroxyethyl)amino]ethyl]cocoamide; and   N-[3-[(2,3-dihydroxypropyl)(3-alkyloxypropyl)amino]propyl]cocoamide.