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US 11,702,610 B2Granted
Lubricating compositions
AssigneeThe Lubrizol Corporation
InventorsDaniel J. Knapton, Allison M. Williamson, Thomas Derevjanik
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Abstract
Lubricating compositions containing a phosphorus-containing salt of an acylated ethylene-α-olefin polymer substituted with an aliphatic polyamine having at least one primary or secondary amine, the lubricating composition having a total phosphorus content in an amount of 200 ppm to 600 ppm by weight of the lubricating composition. The phosphorus-containing salt additive described herein can be used as an anti-wear agent in lubricating composition for diesel engines.
Claims14
An engine lubricating composition comprising:
- an oil of lubricating viscosity;
- and
- a phosphorus-containing salt of an acylated ethylene-α-olefin polymer substituted with an aliphatic diamine having at least one primary amine and a tertiary amine, wherein the aliphatic diamine is amino-propyl morpholine, the lubricating composition having a total phosphorus content in an amount of 200 ppm to 600 ppm by weight of the lubricating composition;
- wherein the lubricating composition has a high temperature, high shear velocity (HTHS) of 1.5 mPa-s to 3.5 mPa-s as measured at 150° C. per ASTM D4683 and wherein the lubricating composition comprises a zinc dialkyldithiophosphate antiwear additive in an amount of from 0.1 wt % to 0.5 wt % of the lubricating composition.
1 more element
Dependencies are inferred from the claim text.