Low friction and low traction lubricant compositions useful in dry clutch motorcycles

Abstract

Low friction and low traction lubricant compositions that are particularly useful in dry clutch motorcycles and processes for making same. In some embodiments, a lubricant composition can include: an oil base stock consisting essentially of at least one monoester, wherein a concentration of the at least one monoester is about 70.00 to about 90.00 mass %; about 0.20 to about 1.50 mass % of at least one antiwear additive; about 0.10 to about 1.00 mass % of at least one friction modifier; about 1.00 to about 4.00 mass % of at least one dispersant; less than about 0.5 mass % of phosphorus; less than about 0.1 mass % of sulfur; and less than about 0.5 mass % of ash. The lubricant composition can have a traction coefficient that is greater than about 0.010 and less than about 0.023 and an average friction coefficient that is greater than about 0.01 and about less than about 0.10.

1 - 24 . (canceled) 
     
     
         25 . A lubricant composition comprising:
 an oil base stock consisting essentially of at least one monoester, wherein a concentration of the at least one monoester is about 70.00 mass % to about 90.00 mass %;   about 0.20 mass % to about 1.50 mass % of at least one antiwear additive;   about 0.10 mass % to about 1.00 mass % of at least one friction modifier;   about 1.00 mass % to about 4.00 mass % of at least one dispersant;   less than about 0.5 mass % of phosphorus;   less than about 0.1 mass % of sulfur; and   less than about 0.5 mass % of ash, wherein all mass percentages are based on a total mass of the lubricant composition,
 wherein the lubricant composition has a first traction coefficient that is greater than about 0.010 and less than about 0.023, as measured by the Traction Coefficient Test at a temperature of about 140° C., a pressure of about 1.25 GPa, and a slide to roll ratio of about 100%, and 
 wherein the lubricant composition has an average friction coefficient that is greater than about 0.01 and about less than about 0.10, as measured by the Friction Coefficient Test at a temperature of about 140° C., a pressure of about 1.00 GPa, and a slide to roll ratio of about 50%. 
   
     
     
         26 . The lubricant composition according to  claim 25 , further comprising less than about 0.01 mass % of the phosphorus, less than about 0.01 mass % of the sulfur, and less than about 0.1 mass % of the ash. 
     
     
         27 . The lubricant composition according to claim  1 , wherein the at least one monoester comprises 2-octyldecylpelargonate, 2-ethylhexylaurate, 2-ethylhexylpalmitate, or combinations thereof. 
     
     
         28 . The lubricant composition according to claim  1 , wherein the at least one antiwear additive comprises amine phosphate. 
     
     
         29 . The lubricant composition according to claim  1 , further comprising a second traction coefficient that is greater than about 0.010 and less than about 0.024, as measured by the Traction Coefficient Test at a temperature of about 120° C., a pressure of about 1.25 GPa, and a slide to roll ratio of about 100%. 
     
     
         30 . The lubricant composition according to claim  5 , further comprising a third traction coefficient that is greater than about 0.010 and less than about 0.032, as measured by the Traction Coefficient Test at a temperature of about 60° C., a pressure of about 1.25 GPa, and a slide to roll ratio of about 100%. 
     
     
         31 . A process of using the lubricant composition of according to claim  1 , comprising: introducing the lubricant composition to at least one gearbox and at least one engine of a motorcycle. 
     
     
         32 . A lubricant composition comprising:
 an oil base stock comprising at least one monoester and at least one polyalphaolefin, wherein a concentration of the at least one monoester is about 50.00 mass % to about 90.00 mass % and a concentration of the at least one polyalphaolefin is about 10.00 mass % to about 20.00 mass %;   about 0.20 mass % to about 2.50 mass % of at least one antiwear additive;   about 1.50 mass % to about 2.50 mass % of at least one friction modifier; and   about 1.00 mass % to about 4.00 mass % of at least one dispersant,   wherein all mass percentages are based on a total mass of the lubricant composition,
 wherein the lubricant composition has a first traction coefficient that is greater than about 0.010 and less than about 0.023, as measured by the Traction Coefficient Test at a temperature of about 140° C., a pressure of about 1.25 GPa, and a slide to roll ratio of about 100%, and 
 wherein the lubricant composition has an average friction coefficient that is greater than about 0.01 and about less than about 0.10, as measured by the Friction Coefficient Test at a temperature of about 140° C., a pressure of about 1.00 GPa, and a slide to roll ratio of about 50%. 
   
     
     
         33 . The lubricant composition according to  claim 32 , wherein the at least one monoester comprises 2-octyldecylpelargonate, 2-ethylhexylaurate, 2-ethylhexylpalmitate, or combinations thereof. 
     
     
         34 . The lubricant composition according to  claim 32 , wherein the at least one antiwear additive comprises a molybdenum dialkyldithiophosphate, a zinc dialkyldithiophosphate, or combinations thereof. 
     
     
         35 . The lubricant composition according to  claim 32 , wherein a concentration of the molybdenum dialkyldithiophosphate in the lubricant composition is about 0.10 mass % to about 1.50 mass %, and wherein a concentration of the zinc dialkyldithiophosphate in the lubricant composition is about 0.60 mass % to about 1.00 mass %. 
     
     
         36 . The lubricant composition according to  claim 32 , further comprising a second traction coefficient that is greater than about 0.010 and less than about 0.024, as measured by the Traction Coefficient Test at a temperature of about 120° C., a pressure of about 1.25 GPa, and a slide to roll ratio of about 100%. 
     
     
         37 . The process for making a lubricant composition according to  claim 32 , further comprising a third traction coefficient that is greater than about 0.010 and less than about 0.032, as measured by the Traction Coefficient Test at a temperature of about 60° C., a pressure of about 1.25 GPa, and a slide to roll ratio of about 100%. 
     
     
         38 . A process for making a lubricant composition, comprising combining:
 an oil base stock consisting essentially of at least one monoester, wherein a concentration of the at least one monoester is from about 70.00 mass % to about 90.00 mass %;   from about 0.20 mass % to about 1.50 mass % of at least one antiwear additive;   from about 0.10 mass % to about 1.00 mass % of at least one friction modifier;   from about 1.00 mass % to about 4.00 mass % of at least one dispersant;   less than about 0.5 mass % of phosphorus; less than about 0.1 mass % of sulfur; and   less than about 0.5 mass % of ash, wherein all mass percentages are based on a total mass of the lubricant composition
 wherein the lubricant composition has a first traction coefficient that is greater than about 0.010 and less than about 0.023, as measured by the Traction Coefficient Test at a temperature of about 140° C., a pressure of about 1.25 GPa, and a slide to roll ratio of about 100%, and 
 wherein the lubricant composition has an average friction coefficient that is greater than about 0.01 and about less than about 0.10, as measured by the Friction Coefficient Test at a temperature of about 140° C., a pressure of about 1.00 GPa, and a slide to roll ratio of about 50%. 
   
     
     
         39 . The process for making a lubricant composition according to claim  8 , further comprising a second traction coefficient that is greater than about 0.010 and less than about 0.024, as measured by the Traction Coefficient Test at a temperature of about 120° C., a pressure of about 1.25 GPa, and a slide to roll ratio of about 100%. 
     
     
         40 . The process for making a lubricant composition according to claim  8 , further comprising a third traction coefficient that is greater than about 0.010 and less than about 0.032, as measured by the Traction Coefficient Test at a temperature of about 60° C., a pressure of about 1.25 GPa, and a slide to roll ratio of about 100%.