High oleic polyol esters, compositions and lubricants, functional fluids and greases containing the same
AssigneeThe Lubrizol Corporation
InventorsSaurabh S. Lawate, Kasturi Lal
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Abstract
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.
Claims29
A composition comprising:
- a polyol ester derived from
- (A) an aliphatic or alicyclic polyol containing from 2 to about 10 hydroxyl groups and
- (B) an aliphatic monocarboxylic acid mixture derived from a high oleic vegetable oil wherein the oleic content is at least 72 percent and the vegetable oil is canola oil, sunflower oil or peanut oil;
- with
- at least one antioxidant selected from the group consisting of phenolics, aromatic amines and tocophenols and
- at least one metal deactivator selected from the group consisting of benzotriazole and benzotriazole derivatives
- and wherein all the hydroxyl groups of the polyol are esterified with the acid mixture.
Dependencies are inferred from the claim text.