Lubricant compositions with improved properties
AssigneeExxonMobil Research and Engineering Company
InventorsMarc-Andre Poirier, Kevin L. Crouthamel
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Abstract
A lubricant composition for providing friction reducing properties and VI and solvency improving properties in a lubricant system is disclosed. The lubricant composition comprises a major amount of at least one base oil and an effective amount of a high viscosity polyester additive having a kinematic viscosity at 100° C. of at least about 2,500 mm2/s.
Claims13
A lubricant composition comprising a major amount of at least one base oil and a high viscosity polyester additive, wherein said high viscosity polyester additive is a co-polymer of alpha-olefins and alpha, beta unsaturated 1,4 dicarboxylic acid esters having an average molecular weight ranging from about 10,000 to about 20,000 and having a kinematic viscosity at 100° C. of at least about 2,500 mm2/s, said additive being present in an amount ranging from about 1 wt % to about 10 wt % of the total composition.
A method for improving frictional properties in a lubricant composition comprising adding to the composition comprising at least one base oil a high viscosity polyester additive in an amount ranging from about 1 wt. % to about 10 wt. % of the total composition wherein said polyester additive is a co-polymer of alpha-olefins and alpha, beta unsaturated 1,4 dicarboxylic acid esters having a kinematic viscosity at 100° C. of 2,500 mm2/s and an average molecular weight ranging from about 10,000 to about 20,000.
Dependencies are inferred from the claim text.