Lubricant compositions including a polymerizable-acid graft polymer as a corrosion inhibitor

Abstract

Embodiments of lubricant compositions that may comprise a lubricant oil and a corrosion inhibitor, wherein the corrosion inhibitor may comprise a polymerizable-acid graft polymer that may comprise from about 3.0% to about 35% by weight of an unsaturated grafting acid and an alkylene oxide polymer backbone, the alkylene oxide polymer backbone having the formula: R″—[(OCnH2n)z—OR′]a wherein each R′ in the formula may be independently selected from the group consisting of a hydrogen atom, hydrogen radicals, and acyl radicals, wherein each R″ in the formula may be independently selected from the group consisting of a hydrogen atom, hydrogen radicals, amine-containing radicals, and acyl radicals, wherein each “n” in the formula may independently have a value of from 2 to 4, wherein each “Z” in the formula may independently have a value of from 4 to about 1800, and wherein “a” may have a value of from 1 to 4.

Dependencies are inferred from the claim text.