A water-soluble lubricant composition for warm and hot plastically working of an aluminum material comprising (A) hydrophilic polyester resin, (B) alkali metal salt of a polymaleic acid resin, (C) alkali metal salt of carboxylic acid and (D) water, and optionally (E) a wax.

A polyester is useful as a high viscosity base fluid. A method for its preparation involves epoxidizing an alpha-olefin, reacting the alpha-epoxide or diol with a saturated linear aliphatic dicarboxylic acid, and isolating the polyester. Lubricant compositions can contain such polyesters and the compositions are useful as automatic transmission fluids, manual transmission fluids, continuously variable transmission fluids, gear oil formulations, industrial gear oil formulations, axle fluid formulations, dual clutch transmission fluids, dedicated hybrid transmission fluids, or as hydraulic oils.

The invention provides a process to prepare a detergent in the presence of a polyether compound. The invention further provides for a lubricating composition containing the detergent. The invention further relates to the use of the lubricating composition in a mechanical device such as an internal combustion engine.

The present invention provides a lubricant material for assisting machining process comprising a high molecular weight compound (A) having a weight average molecular weight of 5?10.sup.4 or higher and 1?10.sup.6 or lower, a medium molecular weight compound (B) having a weight average molecular weight of 1?10.sup.3 or higher and lower than 5?10.sup.4, and a carbon (C) having an average particle size of 100 ?m or larger.

A polyester is useful as a high viscosity base fluid. A method for its preparation involves isomerizing an alpha-olefin, epoxidizing an internal olefin, reacting an internal epoxide, and isolating the polyester. Lubricant compositions can contain such polyesters and the compositions are useful as automatic transmission fluids, manual transmission fluids, continuously variable transmission fluids, gear oil formulations, industrial gear oil formulations, axle fluid formulations, dual clutch transmission fluids, dedicated hybrid transmission fluids, or as hydraulic oils.

The present invention addresses the problem of providing a lubricating oil composition having excellent heat resistance (suppression of discoloration in heating) and tackiness while maintaining excellent viscosity properties of a lubricating oil composition using a ricinolic acid polymer. The present invention provides a copolymer (B) containing structural units (a) derived from ricinolic acid, structural units (b) derived from an aliphatic dicarboxylic acid and structural units (c) derived from a diol having 2 to 10 carbon atoms in a specific ratio and having a specific intrinsic viscosity, and provides a lubricating oil composition containing a base oil and the copolymer (B) and having a mass ratio (mass of (A) /mass of (B)) of the base oil (A) to the copolymer (B) of 60/40 to 99.5/0.5.

One or more techniques and/or systems are disclosed for a dry-type lubricant for use in a dry product hopper to help improve dry product flow and to improve anti-jamming properties of the dry product. The example lubricant can comprise a hydrophilic fiber, such as cellulose, having a width to length aspect ratio that provides a thin fiber. A plurality of hydrophobic particles are deposited on the surface of the fiber, resulting in a fiber surface exhibiting amphiphobic properties. Further, the fiber can operably absorb water, and then releases the absorbed water to the surface of the fiber under mechanical stress, such as when mixed with a product in a hopper. This can result in the water being disposed on the surface of the fiber, to provide lubrication to a product in a hopper to improve flow and anti-jamming characteristics of the product in the hopper.

An axle oil composition having enhanced fuel efficiency and low viscosity is provided, wherein the axle oil composition contains 40 to 70 wt % of poly alpha olefin (PAO) synthetic oil; 5 to 35 wt % of an oil soluble poly alkylene glycol (OSP) synthetic oil; 15 to 20 wt % of an ester-based viscosity modifier; 0.05 to 0.5 wt % of calcite; and 5 to 20 wt % of additive, wherein the axle oil composition having enhanced fuel efficiency and low viscosity has average kinematic viscosity at 100 C. of 11.5 to 13.5 cSt and average kinematic viscosity at 40 C. of 65 to 75 cSt and forms an oil film having a thickness of 85 to 96 nm even at low viscosity, largely improving durability and fuel efficiency of a vehicle.

An object of the present invention is to provide a lubricant composition having excellent lubrication properties in rigorous conditions such as a high temperature and/or a high pressure. The present invention relates to lubricant composition containing a condensate A which is obtained by condensing at least: an alkylene oxide adduct a1 of trihydric or more polyhydric alcohol formed by adding alkylene oxide to at least one hydroxyl group of the trihydric or more polyhydric alcohol; a divalent or more polyvalent carboxylic acid a2 or a precursor of the divalent or more polyvalent carboxylic acid a2; and at least one of a monovalent carboxylic acid a3, a precursor of the monovalent carboxylic acid a3, or monohydric alcohol a4.

An internal combustion engine crankcase lubricating oil composition having a sulphated ash content of no greater than 1.2 mass %, based on the mass of the lubricating oil composition, and a phosphorous content of no greater than 0.1 mass %, based on the mass of the lubricating oil composition, which lubricating oil composition comprises or is made by admixing: (A) a crankcase base oil of lubricating viscosity, in a major amount; and (B) the following additives, in respective minor amounts: (B1) a polymeric friction modifier being the reaction product of (a) a functionalized polyolefin, (b) a polyether, (c) a polyol, and (d) a monocarboxylic acid chain terminating group; and (B2) at least one oil-soluble molybdenum compound.