Lubricating compositions are described, the lubricating compositions comprising a base oil component and an additive component, wherein the additive component comprises a non-silicone anti-foaming agent.

The present techniques relate to facilitating conversion of biosourced triglycerides into fatty acid esters by combining the biosourced triglycerides with a carbonate ester in presence of an alcohol, under catalytic transesterification conditions. A reaction mixture can be heated to a reaction temperature to operate a transesterification of the biosourced triglyceride with the carbonate ester under catalysis of the alcohol thereby forming a single-phase composition comprising the fatty acid esters. The reaction mixture can have a molar ratio of the biosourced triglyceride over the carbonate ester between 1:0.1 and 1:20. Compositions comprising the produced single-phase composition, and optionally an additive, can be used as diesel, jet fuel or lubricant.

An environmentally acceptable lubricating grease, comprising: a) 50 wt % to 90 wt % of a biodegradable base oil comprising a biodegradable ester as base oil; b) 3 wt % to 25 wt % of a thickener selected from b1) 3 wt % to 12 wt % biodegradable calcium soap, b2) 3 wt % to 25 wt % bentonites, b3) and mixtures thereof; c) 4 wt % to 40 wt % additives, comprising c1) 1 wt % to 12 wt % fumed silicon dioxide and/or polytetrafluoroethylene and/or mixtures thereof, c2) 2 wt % to 45 wt % of a polymer selected from polyisobutylene, polyisobutylene/butene copolymer, polymethacrylates, polyesters and mixtures thereof, c3) 0.5 wt % to 20 wt % of a solid lubricant.

Estolide esters obtainable by esterification of—hydroxycarboxylic acids having 12 to 24 carbon atoms, the hydroxycarboxylic acids comprising unsaturated hydroxycarboxylic acids having a)—monocarboxylic acids with 6 to 22 carbon atoms and—polyols with at least two hydroxy groups or b)—monoalcohols having 8 to 22 carbon atoms and—linear carboxylic acids having at least two carboxyl groups or c)—monocarboxylic acids having 6 to 22 carbon atoms and—monoalcohols having 8 to 22 carbon atoms.

An environmentally acceptable lubricating grease, comprising: a) 50 wt % to 90 wt % of a biodegradable base oil comprising a biodegradable ester as base oil; b) 3 wt % to 25 wt % of a thickener selected from b1) 3 wt % to 12 wt % biodegradable calcium soap, b2) 3 wt % to 25 wt % bentonites, b3) and mixtures thereof; c) 4 wt % to 40 wt % additives, comprising c1) 1 wt % to 12 wt % fumed silicon dioxide and/or polytetrafluoroethylene and/or mixtures thereof, c2) 2 wt % to 45 wt % of a polymer selected from polyisobutylene, polyisobutylene/butene copolymer, polymethacrylates, polyesters and mixtures thereof, c3) 0.5 wt % to 20 wt % of a solid lubricant.

The present invention describes a process for obtaining a biolubricant from vegetable oil, which comprises the steps of (a) esterification reaction of the product of vegetable oil hydrolysis using a branched aliphatic alcohol; (b) epoxidation reaction of the esters obtained in step (a); and (c) nucleophilic substitution reaction of the epoxidated esters obtained in step (b) using a branched aliphatic alcohol. The present invention also describes a biolubricant obtained from the process. More specifically, a biolubricant is described that is produced from a ricinoleic fatty acid, whose formula is illustrated in FIG. 1 of the present invention, and where R.sub.1 is a hydroxyl or it is from the formula R.sub.3COO.sup.−, with R.sub.3 being an alkyl radical C.sub.1-C.sub.3, preferably a methyl radical; and R.sub.2 consists of a straight chain of hydrocarbons C.sub.4-C.sub.8 and a branched chain of hydrocarbons C.sub.1-C.sub.3.

A base oil includes an ester compound obtained by reacting a fatty acid component and a monohydric alcohol component. The fatty acid component includes a C.sub.4-C.sub.28 fatty acid. The monohydric alcohol component includes at least one C.sub.4-C.sub.22 straight chain monohydric alcohol and at least one C.sub.4-C.sub.22 branched chain monohydric alcohol. A lubricant oil composition including the base oil is also disclosed.

Disclosed are compositions containing at least one of the following: (1) estolide polyethylene glycol diesters; (2) hydroxy derived estolide polyethylene glycol diesters; (3) unsaturated hydroxy derived estolide polyethylene glycol diesters; (4) estolide trimetholpropane diesters; (5) hydroxy derived estolide trimetholpropane diesters; (6) unsaturated hydroxy derived estolide trimetholpropane diesters; (7) estolide epoxide polyethylene glycol diesters; (8) estolide dihydroxide polyethylene glycol diesters; (9) mono-capped hydroxy derived estolide epoxide polyethylene glycol diesters; (10) mono-capped hydroxy derived estolide dihydroxide polyethylene glycol diesters;
and mixtures thereof; and optionally a carrier. All the compounds can be used as a viscosity index improver thereby improving a lubricant's performance.

Disclosed are compositions containing at least one of the following: (1) estolide polyethylene glycol diesters; (2) hydroxy derived estolide polyethylene glycol diesters; (3) unsaturated hydroxy derived estolide polyethylene glycol diesters; (4) estolide trimetholpropane diesters; (5) hydroxy derived estolide trimetholpropane diesters; (6) unsaturated hydroxy derived estolide trimetholpropane diesters; (7) estolide epoxide polyethylene glycol diesters; (8) estolide dihydroxide polyethylene glycol diesters; (9) mono-capped hydroxy derived estolide epoxide polyethylene glycol diesters; (10) mono-capped hydroxy derived estolide dihydroxide polyethylene glycol diesters;
and mixtures thereof; and optionally a carrier. All the compounds can be used as a viscosity index improver thereby improving a lubricant's performance.

Disclosed are compositions containing at least one of the following: (1) estolide polyethylene glycol diesters; (2) hydroxy derived estolide polyethylene glycol diesters; (3) unsaturated hydroxy derived estolide polyethylene glycol diesters; (4) estolide trimetholpropane diesters; (5) hydroxy derived estolide trimetholpropane diesters; (6) unsaturated hydroxy derived estolide trimetholpropane diesters; (7) estolide epoxide polyethylene glycol diesters; (8) estolide dihydroxide polyethylene glycol diesters; (9) mono-capped hydroxy derived estolide epoxide polyethylene glycol diesters; (10) mono-capped hydroxy derived estolide dihydroxide polyethylene glycol diesters;
and mixtures thereof; and optionally a carrier. All the compounds can be used as a viscosity index improver thereby improving a lubricant's performance.