Abstract: The invention provides a lubricating base oil with a saturated component content of 90% by mass or greater, a proportion of cyclic saturated components of no greater than 40% by mass of the saturated components, a viscosity index of 110 or greater, an aniline point of 106 or greater and an ?-methylene proportion of 14-20% of the total constituent carbons, as well as a lubricating oil composition comprising the lubricating base oil.

Abstract: Hydraulic oil compositions for shock absorbers comprises a lubricating base oil and at least one type of silicone oil selected from the group consisting of silicone oils with a kinematic viscosity at 25° C. of 10,000 to 350,000 mm2/s and fluorine-modified silicone oils with a kinematic viscosity at 25° C. of less than 10,000 mm2/s. The compositions may further comprise a viscosity index improver. The compositions can enhance the damping force and initial damping properties of a shock absorber and thus improve the ride comfort of an automobile equipped with such a shock absorber.

Abstract: Lubricant compositions comprises a lubricant base oil and one or more compounds resulting the modification of a succinimide represented by formula (1) or (2) wherein R1 and R2 may be the same or different and are each independently a hydrocarbon group having 8 to 30 carbon atoms, R3 and R4 may be the same or different and are each independently a hydrocarbon group having 1 to 4 carbon atoms, R5 is hydrogen or a hydrocarbon group having 1 to 30 carbon atoms, n is an integer from 1 to 7. The lubricant compositions have a long-lasting anti-shudder property, an enhanced transmission capacity for a wet clutch, and an excellent shifting property.

Abstract: A low-friction sliding mechanism of the present invention comprises first and second sliding members slidable relative to each other at sliding surfaces thereof and a lubricant being applied to the sliding surfaces of the first and second sliding members. The first and second members are made of a diamond-like carbon material and an iron-based material, respectively, and the lubricant comprises a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: Lubricating oil compositions for internal combustion engines comprises a mineral and/or synthetic base oil, (A) a succinimide-based ashless dispersant in an amount of 0.08 to 0.40 percent by mass in terms of nitrogen, (B) a metallic detergent in an amount of 0.06 to 0.22 percent by mass in terms of metal element, (C) a zinc secondary alkyldithiophosphate in an amount of 0.04 to 0.08 percent by mass in terms of phosphorus, and (D) a phosphorus-containing ashless anti-wear agent in an amount of 0.01 to 0.04 percent by mass in terms of phosphorus and contains sulfated ashes derived from the metal elements in the composition in an amount of 0.3 to 1.0 percent by mass. The lubricating oil compositions are excellent in anti-wear properties and high-temperature detergency although they are decreased in ash content.

Abstract: Lubricant compositions comprises a lubricant base oil and one or more compounds resulting the modification of a succinimide represented by formula (1) or (2) 1

Abstract: A traction drive fluid is provided containing a naphthenic compound represented by the formula: wherein R1 is an alkyl group having 1 to 8 carbon atoms, R2 through R4 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and A is a naphthenic hydrocarbon group, a saturated polycyclic hydrocarbon group, a naphthenic ester group, or a naphthenic carbonate group.

Abstract: A low-friction sliding mechanism of the present invention comprises first and second sliding members slidable relative to each other at sliding surfaces thereof and a lubricant being applied to the sliding surfaces of the first and second sliding members. The first and second members are made of a diamond-like carbon material and an iron-based material, respectively, and the lubricant comprises a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: Lubricant compositions comprises a lubricant base oil and one or more compounds resulting the modification of a succinimide represented by formula (1) or (2) 1

Abstract: Traction drive fluids comprise a saturated polycyclic hydrocarbon compound obtained by hydrogenating a trimeric compound of a cyclopentadiene-based condensed hydrocarbon compound resulting from the Diels-Alder reaction of cyclopentadiene and then isomerizing the resulting compound so as to have a pour point of −10° C. or below. The traction drive fluids can be used not only in driving force transmitting mechanisms but also in hydraulic pressure controlling mechanism and friction properties controlling mechanisms of wet clutches.

Abstract: A traction drive fluid comprising a naphthenic compound represented by the formula 1

Abstract: A traction drive fluid comprises a tractant selected from the specific types of hydrocarbons, carboxylates and carbonate, optionally an effective amount of a base oil selected from a mineral oil and a synthetic oil and additives selected from a viscosity index improver, a ashless dispersant, a phosphorus-containing additive, a friction adjusting agent, a metallic detergent, an oxidation inhibitor, a polar additive, a corrosion inhibitor, a rubber swelling agent, a antifoamer and a colorant.

Abstract: Disclosed is a traction drive fluid which comprises (A) one or more than two compounds selected from the group consisting of saturated polycyclic hydrocarbon compounds represented by the formulae: wherein R1 and R2 are each independently hydrogen or a methyl group, provided that the case where both R1 and R2 are a methyl group at the same time is excluded, and R3 and R4 are each independently hydrogen or a methyl group; wherein R5 and R6 are each independently hydrogen or a methyl group, provided that the case where both R5 and R6 are a methyl group at the same time is excluded, R7 and R8 are each independently hydrogen or a methyl group; and wherein R9, R10 and R11 are each independently hydrogen or a methyl group.