Modified copolymer containing lubricating oil additive composition and method of making the same

摘要

Lubricant additive based on a copolymer or a terpolymer made by free radical polymerization of maleic anhydride or unsaturated carboxylic acids and an 1-olefin and an oligo-olefin or polyisobutene. The copolymer is modified / grafted with a plyetheramine and aromatic amines or polyethers. The copolymer is suitable as soot and sludge dispersant.