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US 8,912,133 B2Granted
Lubricating composition containing a polymer
AssigneeThe Lubrizol Corporation
InventorsMatthew D. Gieselman, Friend L. Christopher, Preston J. Adam
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Abstract
The invention provides a lubricating composition containing an oil of lubricating viscosity, an additive containing a polymeric backbone and at least one amino group. The invention further provides for the additive to have dispersant and/or dispersant viscosity modifying properties. The lubricating composition is suitable for lubricating an internal combustion engine.
Claims10
A lubricating composition comprising:
- (a) an oil of lubricating viscosity;
- and
- (b) an additive obtained/obtainable by a process comprising reacting:
- (1) isatoic anhydride;
- (2) an ethylene α-monoolefin copolymer having a number average molecular weight of about 5,000 to about 120,000, said copolymer being grafted with maleic anhydride;
- (3) at least one aromatic amine comprising at least two linked aromatic moieties, wherein the aromatic amine contains a primary or secondary amino-group;
- to form the additive.
4 more elements
Dependencies are inferred from the claim text.