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

摘要

Lubricant additiv 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 polyether di-amines and aliphatic or aromatic amines. The copolymer is suitable as soot and sludge dispersant.