Environmentally safe lubricating composition and method of manufacturing same

Abstract

An environmentally safe lubricating composition comprising a suspension of submicron molybdenum disulfide in canola oil is disclosed. Preferably the canola oil comprises trimethylol propane trioleate ester. In combining the molybdenum disulfide with the canola oil it preferred that the high shear mixing occur in the presence of a magnetic field.

We claim:  
     
         1 . A lubricating composition comprising: 
 (a) canola oil; and    (b) molybdenum disulfide; 
 wherein the molybdenum disulfide particles have a weight average size of less than 1 micron.  
   
     
     
         2 . A lubricating composition according to  claim 1  wherein the composition also comprises trimethylopropane trioleate ester.  
     
     
         3 . A lubricating composition according to  claim 1  wherein the canola oil has an oleic content of at least 85 percent by weight of the canola oil.  
     
     
         4 . A lubricating composition according to  claim 1  wherein the canola oil comprises canola oil with carbon chains of from 18 to 22 carbons.  
     
     
         5 . A lubricating composition according to  claim 1  wherein the composition also comprises soybean oil.  
     
     
         6 . A lubricating composition according to  claim 1  wherein the composition also comprises petroleum oil.  
     
     
         7 . A lubricating composition according to  claim 1  comprising from 80 to 99.9 weight percent canola oil and from 0.1 to 5 weight percent molybdenum disulfide.  
     
     
         8 . A lubricating composition according to  claim 2  wherein the composition also comprises soybean oil.  
     
     
         9 . A lubricating composition according to  claim 3  wherein the composition also comprises soybean oil.  
     
     
         10 . A lubricating composition according to  claim 4  wherein the composition also comprises soybean oil.  
     
     
         11 . A lubricating composition according to  claim 7  wherein composition also comprises soybean oil  
     
     
         12 . A process for manufacturing a lubricating composition, said process comprising: 
 (a) combining molybdenum disulfide with a weight average particle size less than 1 micron with lubricating base oil to form a combination; and    (b) subjecting said combination to mixing in the presence of a magnetic field which magnetic field is stronger than the earth's natural magnetic field.    
     
     
         13 . A process according to  claim 12  wherein the magnetic field has a magnetic strength of at least 12,000 Gauss.  
     
     
         14 . A process according to  claim 12  wherein the lubricating base oil comprises canola oil.  
     
     
         15 . A process according to  claim 12  wherein the lubricating base oil comprises trimethylolpropane trioleate ester.  
     
     
         16 . A process according to  claim 12  wherein the lubricating base oil comprises canola oil with carbon chain lengths of from 18 to 22 carbons.  
     
     
         17 . A process according to  claim 12  the combination comprises from 80 to 99.9 weight percent canola oil and from 0.1 to 5 weight percent molybdenum disulfide.  
     
     
         18 . A process according to  claim 12  wherein the combination also comprises at least one material selected from the group consisting of viscosity index improvers, corrosion inhibitors, antioxidants, antiwear agents, anti-foaming agents, surfactants and pour point depressants.  
     
     
         19 . A process according to  claim 13  wherein the lubricating base oil comprises trimethylol propane trioleate ester.  
     
     
         20 . A process according to  claim 13  wherein the lubricating base oil comprises canola oil with carbon chain lengths of from 18 to 22 carbons with one unsaturation.  
     
     
         21 . A process according to  claim 13  wherein the combination comprises from 80 to 95 weight percent canola oil and from 0.1 to 5 weight percent molybdenum sulfide.  
     
     
         22 . A process according to  claim 19  wherein the combination also comprises soybean oil  
     
     
         23 . A process according to  claim 20  wherein the combination also comprises soybean oil.  
     
     
         24 . A process according to  claim 21  wherein the combination also comprises soybean oil.