The invention provides a water-soluble metal-working oil agent, including a component A, a component B, a component C, and a component D, wherein the component A is an ester compound which has a characteristic temperature, as measured in accordance with JIS K2242, of 570 C. or higher and which is contained in the water-soluble metal-working oil agent in an amount of 10 mass % or more with respect to the entire amount of the agent; the component B is at least one condensed fatty acid which is selected from a condensed fatty acid (1), produced through dehydration condensation of a hydroxycarboxylic acid, and a condensed fatty acid (2), produced through dehydration condensation of an alcoholic hydroxyl group of the condensed fatty acid (1) with a monovalent carboxylic acid, which has a characteristic temperature, as measured in accordance with JIS K2242, of 650 C. or higher, and which is contained in the water-soluble metal-working oil agent in an amount of 7.5 mass % or more with respect to the entire amount of the agent; the component C is a carboxylic acid which is contained in the water-soluble metal-working oil agent in an amount of 2 mass % or more with respect to the entire amount of the agent; and the component D is a basic compound contained in such a neutralization equivalent that at least the component B and component C are neutralized to cancel out the sum of the acid values thereof. The agent can provide excellent workability with a hard-to-work material and can prolong tool life.

There is provided a grease composition which is supplied between a plurality of lips provided in a sealing device that seals between a pair of members that rotate relative to each other, wherein the grease composition comprises a base oil (A), a thickening agent (B) and a rust preventive agent (C); a kinematic viscosity of the base oil (A) at 40 C. is 30 to 80 mm.sup.2/s; the thickening agent (B) is a diurea compound represented by Formula (1); and the composition comprises 5 to 15% by mass of the thickening agent (B) and 0.1 to 2.0% by mass of the rust preventive agent (C) based on the total of the grease composition.
R.sup.1NHCONHR.sup.2NHCONHR.sup.3(1) wherein R.sup.2 is a divalent aromatic hydrocarbon group having 6 to 15 carbon atoms, and R.sup.1 and R.sup.3 are a linear or branched alkyl group having 8 to 22 carbon atoms. Thus, a grease composition is provided, which can suppress a torque difference due to a rotation direction and exhibits excellent sealing properties.

According to the present invention, the composition for treating aluminum containing surfaces comprises the reaction product of at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and at least one fatty acid, wherein the molar ratio of the amino group/s of the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and of the at least one fatty acid is 1.2:1 to 1:2, and wherein the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof is linked to the at least one fatty acid by at least one carboxylic acid/amine salt bond and/or at least one amide bond.

The invention provides a lubricating composition containing an oil of lubricating viscosity and an amine or ammonia salt of a carboxylic acid compound where said carboxylic acid is characterized in that it is functionalized with a hydroxy-substituted aromatic moiety. The invention further relates to methods of lubricating an internal combustion engine by supplying the described lubricating composition to the internal combustion engine. The invention further relates to the use of the salt of the carboxylic acid compound as an antiwear agent or an antioxidant.

The present invention relates to functional fluid compositions containing friction modifiers, and specifically stable compositions containing friction modifiers with limited solubility in and/or limited compatibility with the functional fluids with which they are used. In particular the present invention deals with functional fluids used in internal combustion engines, such as engine oils, and friction modifiers that contain one or more amide functional groups, where the friction modifier is present in the functional fluid composition at levels that would otherwise cause the composition to be unstable and/or hazy.

The invention provides a water-soluble metal-working oil agent, including a component A and a component B, wherein the component A is a mineral oil which has a characteristic temperature, as measured in accordance with JIS K2242, of 570 C. or higher, and the component B is at least one condensed fatty acid which is selected from a condensed fatty acid (1), produced through dehydration condensation of a hydroxycarboxylic acid, and a condensed fatty acid (2), produced through dehydration condensation of an alcoholic hydroxyl group of the condensed fatty acid (1) with a monovalent carboxylic acid, which has a characteristic temperature, as measured in accordance with JIS K2242, of 650 C. or higher. The agent can provide excellent workability with a hard-to-work material and can prolong tool life.

The invention provides a method of lubricating a mechanical device by supplying a lubricating composition containing an oil of lubricating viscosity and a compound having 2 to 20 hydroxy-carboxylic acid residues. The invention further relates to the use of the compound in a driveline device to provide at least one of antiwear performance, friction modification (particularly for enhancing fuel economy).

The present invention relates to functional fluid compositions containing friction modifiers, and specifically stable compositions containing friction modifiers with limited solubility in and/or limited compatibility with the functional fluids with which they are used. In particular the present invention deals with functional fluids used in internal combustion engines, such as engine oils, and friction modifiers derived from hydroxy-carboxylic acids, where the friction modifier is present in the functional fluid composition at levels that would otherwise cause the composition to be unstable and/or hazy.

Provided is grease for a rolling bearing of an information recording and reproducing apparatus 1, containing a base oil, a thickener, and at least one kind of an antioxidant selected from an amine-based antioxidant (A) expressed by the General Formula (1), and a phenol-based antioxidant (B) expressed by the General Formula (2).

A sulfonate-based grease composition and method of manufacture comprising the addition of one or more glycerol derivatives. The glycerol derivative acts to optimally disperse the thickener in the grease such that the conventional step of milling the grease may not be needed. The glycerol derivative reacts with water to form in-situ complexing acids, which may replace at least some of the normally used complexing acids for reacting with calcium containing bases. The greases according to preferred embodiments have a high dropping point, improved thickener yield, and faster conversion time.