Lubricating oil compositions comprising biobased base oils

Abstract

The present invention generally relates to lubricating oil compositions comprising a biobased base oil, methods of lubricating an engine with said lubricating oil compositions. Also disclosed is the use of said lubricating oil compositions in an engine.

1 . A lubricating oil composition comprising a biobased base oil, wherein the biobased base oil has the molecular structure:
                       wherein, [B] is a biobased hydrocarbon repeating unit;   [P] is a non-biobased hydrocarbon repeating unit,   n is greater than 1, and m is less than 4; the stereoscopic arrangement of [B] and [P] is linear, branched or cyclic; the sequential arrangement of [B] and [P] is block, alternating or random; the molecular weight of the biobased base oil is in range of 300 g/mol to 1500 g/moL.   
     
     
         2 . The lubricating oil composition of  claim 1 , wherein the composition further comprises a wear inhibitor, detergent, dispersant, friction modifier, viscosity index improver, pour point depressant, thickener, or antioxidant. 
     
     
         3 . The lubricating oil composition of  claim 1 , wherein the composition further comprises a calcium detergent. 
     
     
         4 . The lubricating oil composition of  claim 3 , wherein the calcium detergent is a calcium sulfonate, calcium salicylate, calcium carboxylate, or calcium phenate detergent. 
     
     
         5 . The lubricating oil composition of  claim 3 , wherein the calcium detergent is one or more of a neutral, low overbased, medium overbased, high overbased or high high overbased calcium sulfonate, calcium salicylate, calcium carboxylate or calcium phenate detergent. 
     
     
         6 . The lubricating oil composition of  claim 1 , wherein the composition further comprises a magnesium detergent. 
     
     
         7 . The lubricating oil composition of  claim 6 , wherein the magnesium detergent is a magnesium sulfonate or magnesium salicylate detergent. 
     
     
         8 . The lubricating oil composition of  claim 1 , wherein the composition further comprises a detergent derived from an isomerized normal alpha olefin. 
     
     
         9 . The lubricating oil composition of  claim 8 , wherein the alkyl substituent of the calcium detergent is derived from an alpha olefin having from 12 to 40 carbon atoms per molecule. 
     
     
         10 . The lubricating oil composition of  claim 8 , wherein the alkyl substituent of the calcium detergent is a residue derived from an isomerized normal alpha-olefin having from 14 to 28 carbon atoms per molecule. 
     
     
         11 . The lubricating oil composition of  claim 8 , wherein the isomerized normal alpha olefin has an isomerization level (I) of the normal alpha olefin of from about 0.1 to about 0.4, where the isomerization level (I) of the olefin is determined by hydrogen-1 (1H) NMR obtained on a Bruker Ultrashield Plus 400 in chloroform-d1 at 400 MHz using TopSpin 3.2 spectral processing software, and the isomerization level (I) is:
         I   =     m   /         m   +   n       ,               where m is NMR integral for methyl groups with chemical shifts between 0.3 ± 0.03 to 1.01 ± 0.03 ppm, and n is NMR integral for methylene groups with chemical shifts between 1.01 ± 0.03 to 1.38 ± 0.10 ppm.   
     
     
         12 . The lubricating oil composition of  claim 1 , wherein the composition further comprises an ashless detergent. 
     
     
         13 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises both a magnesium sulfonate detergent and a calcium salicylate detergent. 
     
     
         14 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises a magnesium sulfonate detergent and a calcium detergent selected from calcium phenate and calcium sulfonate. 
     
     
         15 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises from about 200 to about 3000 ppm of calcium, based on the weight of the lubricating oil composition. 
     
     
         16 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises from about 100 to about 2000 ppm of magnesium, based on the weight of the lubricating oil composition. 
     
     
         17 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises an organic friction modifier derived from a fatty acid source. 
     
     
         18 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises an antioxidant in greater than 1.0 wt.% based on the total weight of the lubricating oil composition. 
     
     
         19 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises an antioxidant in greater than 2.0 wt.% based on the total weight of the lubricating oil composition. 
     
     
         20 . The lubricating oil composition of  claim 1  wherein the lubricating oil composition further comprises an antioxidant in greater than 3.0 wt.% based on the total weight of the lubricating oil composition. 
     
     
         21 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises an antiwear additive selected from a C 4 /C 6  secondary ZnDTP, C3/C6 primary, C12 aryl, C4/C8 primary, C3/C6 secondary, C3/C8 secondary, and Cs primary ZnDTP. 
     
     
         22 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises a molybdenum compound in an amount from 50 to 2000 ppm of molybdenum based on the total weight of the lubricating oil composition and wherein the organomolybdenum compound is a sulfur-containing organomolybdenum compound or a non-sulfur-containing organomolybdenum compound. 
     
     
         23 . The lubricating oil composition of  claim 1 , wherein the lubricating oil composition further comprises a molybdenum compound in an amount from 50 to 2000 ppm of molybdenum based on the total weight of the lubricating oil composition and wherein the molybdenum compound is a molybdenum-succinimide complex. 
     
     
         24 - 198 . (canceled)