Graft functionalized olefin polymer dispersant and uses thereof
AssigneeAfton Chemical Corporation
InventorsJoseph S. Bradley, Michael A. Danylo, Yoon Soo Song, Anthony F. Fagan
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Abstract
A novel highly grafted, functionalized olefin polymer is provided comprising the reaction product of a method comprising reacting an acylating agent with a mixture comprising an olefin polymer having a number average molecular weight of between about 5,000 to about 100,000 and a diluent in the presence of a free radical initiator to provide an acylated olefin polymer which is further reacted with a polyamine to provide the grafted functionalized olefin polymer dispersant. Lubricating oil concentrates and compositions containing the highly grafted, functionalized olefin polymer and uses thereof also are provided.
Claims13
A lubricating oil composition comprising:
- a major amount of an oil of lubricating viscosity;
- and
- a minor amount of a grafted functionalized olefin polymer prepared by a method comprising reacting an acylating agent with a mixture comprising
- an olefin polymer having a number average molecular weight of between about 20,000 to about 100,000 and
- a diluent in the presence of a free radical initiator to provide an acylated olefin polymer which is further reacted with a polyamine,
- wherein the diluent is selected from the group consisting of alpha-olefin oligomers, highly refined solvent neutral base oil, and combinations thereof.
Dependencies are inferred from the claim text.