The product of addition of a copolymer of ethylene and of a nitrogen has ethylenically unsaturation, its manufacture and its application to improve the viscosity index of the lubricating oil.

摘要

An ene adduct and adduct derivatives of a C3-C24 ethylenically unsaturated nitrogen-containing reactant, e.g. acrylonitrile, and a copolymer of ethylene, at least one C3 to C50 alpha-monoolefin and at least one non-conjugated diene, said adduct containing from about 0.005 to 7% by weight nitrogen and having a number average molecular weight of from about 1000 to 500,00, in oil-soluble form have utility as a multi-functional V.I. improver for lubricating oils.