A synthetic lubricating oil comprises an ester derived from (a) a monohydric alcohol having 4 to 18 carbon atoms which has a branched alcohol content of not less than 50 mol% and/or a neopentylpolyol having not more than 30 carbon atoms, (b) a hydroxycarboxylic acid condensate having an average degree of polymerization of not less than 1.2, and (c) a monocarboxylic acid having 4 to 18 carbon atoms which has a branched carboxylic acid content of not less than 50 mol%.
一种合成润滑油包含由以下物质衍生的
酯类:(a) 具有 4 至 18 个碳原子的一元醇,其支链醇含量不低于 50 摩尔%,和/或具有不超过 30 个碳原子的新戊基多元醇;(b) 平均聚合度不低于 1.2 的羟基
羧酸缩合物;以及 (c) 具有 4 至 18 个碳原子的一元
羧酸,其支链
羧酸含量不低于 50 摩尔%。