Lubricant compositions and methods of dry lubricating surface using the same

Abstract

A lubricant composition comprises vegetable oil; nonionic surfactant; water in an amount of from about 0% to about 15% by weight based on total weight of the composition; optionally biocide; and optionally chelating agent, wherein the weight ratio of vegetable oil to nonionic surfactant is in a range of from about 1:1 to about 9:1. Also disclosed is a lubricant composition that comprises about 40% to about 90% by weight of vegetable oil; from about 10% to about 40% by weight of nonionic surfactant; from about 0% to about 15% by weight of based on total weight of the composition; optionally biocide; and optionally chelating agent. The disclosed lubricant compositions may further comprise the ester of fatty alcohol. Furthermore, a method of dry lubricating surface using the lubricant composition is disclosed.

1 . A lubricant composition, comprising:
 vegetable oil;   nonionic surfactant;   water in an amount of from about 0% to about 15% by weight based on total weight of the composition;   optionally biocide; and   optionally chelating agent;   wherein a weight ratio of the vegetable oil to the nonionic surfactant is in a range of from about 1:1 to about 9:1.   
     
     
         2 . The composition of  claim 1 , wherein the composition fulfills at least one of the following:
 (a) the vegetable oil is present in an amount of from about 40% to about 90% by weight, based on total weight of the composition,   (b) the nonionic surfactant is present in an amount of from about 10% to about 40% by weight based on total weight of the composition.   
     
     
         3 . The composition of  claim 1 , wherein the composition further comprises ester of fatty alcohol, wherein the fatty alcohol includes from about 4 to about 28 carbon atoms. 
     
     
         4 . The composition of  claim 3 , wherein a weight ratio of the vegetable oil to the ester of fatty alcohol is in a range of from about 1:1 to about 20:1. 
     
     
         5 . The composition of  claim 3 , wherein the ester of fatty alcohol is present in an amount of from about 4% to about 40% by weight based on total weight of the composition. 
     
     
         6 . A lubricant composition, comprising:
 vegetable oil in an amount of from about 40% to about 90% by weight;   nonionic surfactant in an amount of from about 10% to about 40% by weight;   water in an amount of from about 0% to about 15% by weight based on total weight of the composition;   optionally biocide; and   optionally chelating agent.   
     
     
         7 . (canceled) 
     
     
         8 . The composition of  claim 6 , wherein the composition further comprises ester of fatty alcohol, wherein the fatty alcohol includes from about 4 to 28 carbon atoms. 
     
     
         9 . (canceled) 
     
     
         10 . The composition of  claim 8 , wherein a weight ratio of the vegetable oil to the ester of fatty alcohol is in a range of from about 1:1 to about 20:1. 
     
     
         11 . The composition of  claim 3 , wherein the ester of fatty alcohol fulfills at least one of the following:
 (a) the ester of fatty alcohol comprises monoester of fatty alcohol,   (b) the ester of fatty alcohol is a blend of at least two esters of fatty alcohols.   
     
     
         12 . The composition of  claim 3 , wherein the ester of fatty alcohol has the following chemical structure: 
       
         
           
           
               
               
           
         
         wherein: 
         R 1  includes from about 3 to about 15 carbon atoms, preferable from about 5 to about 9 carbon atoms, most preferably from about 7 to about 9 carbon atoms; and 
         R 2  includes from about 4 to about 28 carbon atoms, preferable from about 8 to about 20 carbon atoms, most preferably from about 12 to about 18 carbon atoms. 
       
     
     
         13 . The composition of  claim 3 , wherein the ester of fatty alcohol comprises salicylate ester of fatty alcohol, caproate ester of fatty alcohol, caprylate ester of fatty alcohol, caprate ester of fatty alcohol, or any mixture thereof. 
     
     
         14 . The composition of  claim 3 , wherein the ester of fatty alcohol comprises tridecyl salicylate, dodecyl salicylate, decyl salicylate, octyl salicylate, 2-ethylhexyl salicylate, lauryl caproate, myristyl caproate, oleyl caproate, linoleyl caproate, linolenyl caproate, palmityl caproate, palmitoleyl caproate, stearyl caproate, lauryl caprylate, myristyl caprylate, oleyl caprylate, linoleyl caprylate, linolenyl caprylate, palmityl caprylate, palmitoleyl caprylate, stearyl caprylate, lauryl caprate, myristyl caprate, oleyl caprate, linoleyl caprate, linolenyl caprate, palmityl caprate, palmitoleyl caprate, stearyl caprate, or any mixture thereof. 
     
     
         15 . (canceled) 
     
     
         16 . The composition of  claim 1 , wherein the composition is substantially free of water. 
     
     
         17 . (canceled) 
     
     
         18 . The composition of  claim 1 , wherein vegetable oil comprises an oil extracted from a plant source, and wherein the oil extracted from plant source comprises sunflower oil, rapeseed oil, soybean oil, grape seed oil, cocoa butter oil, almond oil, avocado oil, Brazil nut oil, cashew oil, cashew nut shell oil, neem oil, linseed oil, double boiled linseed oil, chia seed oil, coconut oil, corn oil, cottonseed oil, flaxseed oil, hemp seed oil, vigna mungo oil, mustard oil, olive oil, palm oil, lesquerella oil, canola oil, peanut oil, pecan oil, perilla oil, rice bran oil, safflower oil, sesame oil, walnut oil, meadowfoam oil, castor oil, or any mixture thereof. 
     
     
         19 . (canceled) 
     
     
         20 . The composition of  claim 1 , wherein the nonionic surfactant comprises fatty alcohol surfactant, fatty alcohol ethoxylate surfactant, fatty alcohol propoxylate surfactant, fatty alcohol ethoxylated/propoxylate surfactant, castor oil ethoxylate surfactant, fatty alcohol ethoxylate carboxylate surfactant, fatty alcohol propoxylate carboxylate surfactant, fatty alcohol ethoxylated/propoxylate carboxylate surfactant, sorbitan ethoxylated ester surfactant, sorbitan ester surfactant, or any combination thereof. 
     
     
         21 . The composition of  claim 20 , wherein the fatty alcohol ethoxylate surfactant is present and fulfills at least one of the following:
 (a) the fatty alcohol ethoxylate surfactant comprises C6-24 alcohol and from about 3 to about 50 moles of ethylene oxide,   (b) the fatty alcohol ethoxylate surfactant comprises C12-14 alcohol and from about 3 to about 14 moles of ethylene oxide,   (c) the fatty alcohol ethoxylate surfactant comprises lauryl alcohol ethoxylate surfactant, C9-C11 alcohol ethoxylate surfactant, C12-C13 alcohols ethoxylate surfactant, C12-14 alcohol ethoxylate surfactant, C12-15 alcohol ethoxylate surfactant, C14-C15 alcohol ethoxylate surfactant, or any mixture thereof.   
     
     
         22 . The composition of  claim 1 , wherein the nonionic surfactant comprises fatty alcohol alkoxylate having the following chemical structure
   R—O—(CH(Y)—CH 2 —O) n —(CH 2 ) m —COOH,
   wherein:   R is an alkyl group containing 6 to 24 carbon atoms,   Y is H or CH 3 ,   n is a number ranging from about 3 to about 50, and   m is a number ranging from about 0 to about 3.   
     
     
         23 . (canceled) 
     
     
         24 . (canceled) 
     
     
         25 . (canceled) 
     
     
         26 . The composition of  claim 1 , wherein the composition is substantially free of silicon-based compound, mineral oil, fatty acid, fatty amine, or any combination thereof. 
     
     
         27 . A method of dry lubricating surface, comprising:
 applying the lubricant composition of  claim 1  discontinuously to the surface without diluting the lubricant composition prior to the application;   applying water intermittently to the surface, wherein the water facilitates removal of blackness from the surface;   monitoring a coefficient of friction on the surface and re-applying the lubricant composition of any one of claims  1 - 26  discontinuously to the surface when the monitored coefficient of friction on the surface increases to about 0.17; and   continuing to apply water intermittently to the surface to facilitate the removal of blackness from the surface.   
     
     
         28 . (canceled) 
     
     
         29 . (canceled) 
     
     
         30 . (canceled) 
     
     
         31 . A method of lubricating a conveyor belt, comprising:
 applying the dry lubricant composition of  claim 1  discontinuously to the conveyor belt without diluting the dry lubricant composition prior to the application.   
     
     
         32 . (canceled) 
     
     
         33 . (canceled) 
     
     
         34 . (canceled) 
     
     
         35 . (canceled) 
     
     
         36 . (canceled) 
     
     
         37 . (canceled) 
     
     
         38 . (canceled)