A polyol ester is described which is derived from:
(A) an aliphatic or alicyclic polyol: and
(B) an aliphatic monocarboxylic mixture derived from a natural vegetable oil, said acid mixture comprising at least about 72% by weight of oleic acid.
The invention also relates to compositions comprising the polyol esters and at least one antioxidant, and lubricating oil compositions comprising an oil of lubricating viscosity and the polyol esters of the invention. Lubricating oil compositions comprising polyol esters of the invention, at least one antioxidant, and an oil of lubricating viscosity also are described and are particularly useful.
所述多元醇酯来自于
(A) 脂肪族或脂环族多元醇:和
(B) 一种从天然植物油中提取的脂肪族单
羧酸混合物,所述酸混合物包含至少约 72% (按重量计)的
油酸。
本发明还涉及包含多元醇酯和至少一种
抗氧化剂的组合物,以及包含润滑粘度油和本发明多元醇酯的润滑油组合物。此外,还描述了包含本发明多元醇酯、至少一种
抗氧化剂和润滑粘度油的润滑油组合物,这些组合物特别有用。