Multipurpose lubricating oil additive based on electrophilically terminated anion of oxidized ethylene copolymer

摘要

Multipurpose lubricating oil additives having utility as viscosity index improvers, antiwear agents, sludge dispersants and pour point depressants comprise oil-soluble reaction products of (1) nitrogen compounds having one or more amino groups and/or (2) oxygen compounds having one or more hydroxyl, epoxide or ether groups and/or (3) sulfurizing agent and/or boron compound and/or phosphorous compound with an electrophilically terminated anion of an oxidized copolymer of ethylene and at least one C3-C50 alpha monoolefin.