Boron Nitride Based Lubricant Additive

Abstract

A food grade, low friction lubricant additive for use with oil-based lubricants. The additive comprises boron nitride in combination with a dispersant and an oil carrier.

1 . A lubricant additive comprising boron nitride, one or more dispersants and one or more oil carriers.  
     
     
         2 . The lubricant additive of  claim 1 , wherein the oil carrier comprises one or more synthetic carriers.  
     
     
         3 . The lubricant additive of  claim 1 , wherein the boron nitride is hexagonal boron nitride having a particle size in the range of about 0.1 to about 10 microns.  
     
     
         4 . The lubricant additive of  claim 1 , wherein the dispersant is alkylated polyvinylpyrrolidone modified with one or more of the group consisting of a-olefins, eicosene, tricontanyl, hexadecane or mixtures thereof.  
     
     
         5 . The lubricant additive of  claim 4 , wherein the alkyl component of the polyvinylpyrrolidone has a linear moiety in the range of from C-4 to C-30.  
     
     
         6 . The lubricant additive of  claim 1 , wherein the dispersant comprises on or more synthetic esters.  
     
     
         7 . The lubricant additive of  claim 6 , wherein the synthetic ester is selected from the group consisting of glycerol dioleate, isopropyl oleate, glycerol mono-oleate and mixtures thereof.  
     
     
         8 . The lubricant additive of  claim 2 , wherein the synthetic carrier is selected from the group consisting of polyalphaolefin, polyalkylene glycol and mixtures thereof.  
     
     
         9 . The lubricant additive of  claim 1 , wherein the lubricant additive is suitable for food grade applications.  
     
     
         10 . The lubricant additive of  claim 1 , wherein the lubricant additive comprises in the range of about 0.5 to about 50 weight percent boron nitride.  
     
     
         11 . The lubricant additive of  claim 10 , wherein the lubricant additive comprises in the range of about 5 to about 20 weight percent boron nitride.  
     
     
         12 . The lubricant additive of  claim 1 , wherein the lubricant additive comprises in the range of about 5 to about 30 weight percent dispersant.  
     
     
         13 . The lubricant additive of  claim 1 , wherein the lubricant additive comprises in the range of about 5 to about 20 weight percent dispersant.  
     
     
         14 . The lubricant additive of  claim 1 , wherein the oil carrier comprises in the range of about 45 to about 99 weight percent synthetic carrier.  
     
     
         15 . The lubricant additive of  claim 14 , wherein the oil carrier comprises in the range of about 70 to about 80 weight percent synthetic carrier.  
     
     
         16 . An oil-based lubrication package comprising an oil-based lubricant and the lubricant additive of  claim 1 .  
     
     
         17 . The lubricant additive of  claim 1 , wherein the oil carrier comprises one or more white oils  
     
     
         18 . A method for forming an oil-based lubrication package comprising the step of adding the lubricant additive of  claim 1  to an oil-based lubricant.  
     
     
         19 . A food-grade lubricant additive comprising boron nitride, one or more dispersants and one or more synthetic oil carriers.