Abstract: A method for producing a polymer solution including a methacrylate copolymer having a weight average molecular weight of not less than 100,000, a weight average molecular weight/number average molecular weight of 1.01 to 1.8 and a glass transition temperature of not more than 40° C. and including methyl methacrylate units and alkyl (meth)acrylate units containing a C10-36 alkyl group, and a first solvent having a boiling point of not less than 200° C., through steps including a step (I) of preparing the methacrylate copolymer by polymerizing monomers in a second solvent having a boiling point of below 200° C., and a step (II) of mixing the solution from the step (I) which includes the methacrylate copolymer and the second solvent, with the first solvent, and removing the second solvent to raise the content of the first solvent to not less than 10 mass % of the polymer solution.

Abstract: A surface protection composition which is hard to deform or flow even placed under environments of a large temperature change with an external physical load such as pressure, and which stably protects a metal surface. A terminal fitted electric wire coated with the composition. The surface protection composition contains a high-consistency material (A) containing a lubricant base oil and an amide compound, and a phosphorus composition (B). The phosphorus composition (B) contains a composition (b1) containing one or more compounds represented by the general formulae (1) and (2) and one or more metals and/or one or more amines. The phosphorus composition (B) also contains one or more compounds (b2) represented by the general formula (3).

Abstract: A sofa bed sliding system for a sofa bed is provided. The sliding system is forming a connection between a moveable sofa bed part and an associated frame structure, wherein said sliding system includes at least one sliding surface being coated with a lacquer including a resin, wherein said lacquer in turn is at least partly coated with a lipophilic composition coating to provide a slide layer with a lowered friction.

Abstract: The present disclosure concerns engine lubricant compositions including at least one base oil, at least one viscosity index improver polymer and at least one polyalkylene glycol, obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, including at least one butylene oxide, the quantity of polyalkylene glycol being from 1 to 28% by mass with respect to the total mass of lubricant composition. Using at least one polyalkylene glycol, obtained by polymerization or copolymerization of alkylene oxides including from 3 to 8 carbon atoms, further including at least one butylene oxide in a base oil improves engine cleanliness while not increasing, or indeed while decreasing, the consumption of petrol or diesel fuels by the engine.

Abstract: The present invention relates to a preparation method of a lube base oil including a conversion of biomass fat to a fatty acid; a separation of a C18 unsaturated fatty acid from the fatty acid; a maximization of an oleic acid content through partial hydrotreating of the C18 unsaturated fatty acid; a synthesis of a dimer or higher-order oligomer through an oligomerization of the oleic acid; and an esterification of the oligomer, and relates to a lube base oil prepared therefrom. The lube base oil of the present invention contains an x-type diester dimer and has an excellent low-temperature stability and a high biodegradability resulting from its chemical structure, thus being ecofriendly.

Abstract: The working fluid composition for a refrigerating machine of the invention is characterized by comprising an ester of a polyhydric alcohol and a fatty acid with a content of a C5-C9 branched fatty acid of 50-100% by mole, and a fluoropropene refrigerant and/or trifluoroiodomethane refrigerant. The refrigerating machine oil of the invention is characterized by comprising an ester of a polyhydric alcohol and a fatty acid with a content of a C5-C9 branched fatty acid of 50-100% by mole, and by being used together with a fluoropropene refrigerant and/or trifluoroiodomethane refrigerant.

Abstract: Provided is a lubricating oil composition for a refrigerator which uses a base oil including as the main component at least one kind of oxygen-containing compounds selected from polyoxyalkylene glycols, polyvinyl ethers, copolymers of poly(oxy)alkylene glycols or monoethers thereof and polyvinyl ethers, polyol esters, and polycarbonates. The lubricating oil composition for a refrigerator is used for a refrigerator that uses, as a refrigerant, a fluorine-containing organic compound, which is a refrigerant applicable to current car air conditioner systems or the like and has a specific polar structure, and has favorable sealing property, a low coefficient of friction factor in a sliding part, and excellent stability as well as excellent compatibility with the refrigerant.

Abstract: A copolymer that includes for 100 mol %: a) more than 70 mol % and up to 99.9 mol % of hydrophobic monomer units (A) from stearyl methacrylate; and b) 0.1 mol % to 30 mol % of monomer units (B) from at least one monomer of a compound of formula (I) where R1 is a linear or branched alkyl radical comprising 12 to 22 carbon atoms, R2 is a hydrogen atom or a methyl radical, and n is an integer greater than or equal to 0 and lower than or equal to 30, wherein it is understood that said compound of formula (I) is not stearyl methacrylate. The invention also relates to a method for preparing and using same as a modifier of the rheology of the oil phase of a topical cosmetic, dermopharmaceutical, or pharmaceutical composition.

Abstract: The present invention provides a grease composition having an excellent fretting wear resistance in a wide temperature region from low to high temperatures and particularly even at low temperatures and a rolling bearing in which the grease composition is packed. A grease composition (7) is packed inside a grease-packed bearing (1). The grease composition (7) contains base oil, a thickener, and an additive.

Abstract: A working fluid composition for a refrigerating machine comprising: a refrigerating machine oil containing at least one lubricating base oil selected from a mineral oil and a synthetic oil, and at least one phosphorus compound selected from a mono(alkylphenyl) diphenyl phosphate having a C3-C5 alkyl group and a di(alkylphenyl) phenyl phosphate having two C3-C5 alkyl groups, wherein a content of the phosphorus compound is 0.01 to 5% by mass based on a total amount of the refrigerating machine oil; and a hydrocarbon refrigerant having 2 to 4 carbon atoms.

Abstract: The present invention provides a lubricating oil composition with excellent torque capacity and shifting characteristics suitable for use as automatic or continuously variable transmission fluids, which composition comprises a base oil and, on the basis of the total mass of the composition, (A) a sulfonate detergent in an amount of 0.01 to 0.3 percent by mass in terms of metal (MeA); (B) a salicylate detergent in an amount of 0 or more than 0 and 0.1 percent by mass or less, in terms of metal (MeB); and (C) a boron-containing succinimide type ashless dispersant in an amount of 0.001 to 0.1 percent by mass in terms of boron (BoC); (MeB)/(MeA) being 0, or greater than 0 and 1.5 or less, and (MeA)/(BoC) being from 0.001 to 20.

Abstract: It is provided a long life spindle motor that is excellent in startup characteristic in low-temperature environments such as 0° C., and that startup problems due to the evaporation or deterioration of lubricating oil can be avoided in high-temperature environments. The spindle motor includes a fluid dynamic bearing filled with a lubricating oil, containing a methyl pentanediol diester obtained by esterifying 3-methyl-1,5-pentanediol with n-decanoic acid and n-undecanoic acid at a molar ratio ranging from 90:10 to 20:80, and having a water content of not more than 1000 ppm.

Abstract: There is provided a lubricating oil composition for a hydrodynamic bearing including: 95 to 99 wt % of an ester-based base oil; and 1.0 to 5.0 wt % of mixed oil containing at least two kinds of ester-based oils different from the ester-based base oil. According to the present invention, a hard disk drive (HDD) motor is manufactured using the lubricating oil composition for a hydrodynamic bearing having a low viscosity, a small evaporation loss, and improved oxidation stability at a room temperature, whereby the impact resistance and low-temperature operation stability of the hydrodynamic bearing motor may be improved.

Abstract: The invention relates to novel high temperature oils based on aromatic esters, such as trimellitic acid esters, pryomellitic acid esters, trimesic acid esters or a mixture thereof or derivatives of phloroglucinol and a fully hydrated or a hydrated polyisobutylene or a mixture thereof.

Abstract: A lubricant composition comprising (a) from 0.1 to 10 percent by weight of one or more polyalkylene glycols (PAG); and (2) one or more ester base oils selected from the group of natural esters, synthetic esters and combinations thereof; wherein the one or more PAG has a molecular weight in the range 1500 to 5000 g/mole, comprises from 10 to 40 percent by weight of units derived from ethylene oxide and from 90 to 60 percent by weight of units derived from propylene oxide; and wherein the one or more PAGs are in the form of block copolymer, reverse block copolymer or combinations thereof is provided. Also provided is a method of enhancing the hydrolytic stability of an ester base oil.

Abstract: The present invention relates to a lubricating composition containing: an oil of lubricating viscosity, a non-borated dispersant, a detergent, and an antiwear package comprising (a) a derivative of a hydroxycarboxylic acid, (b) an amine salt of a phosphoric acid ester, and (c) a phosphite having at least one hydrocarbyl group with 4 or more carbon atoms. The invention further provides for a method of lubricating a driveline device application by employing a lubricating composition containing the antiwear package.

Abstract: Lubricant compositions including a random or block copolymer first high-EO content polyalkylene glycol, a random copolymer second polyalkylene glycol based on propylene oxide and butylene oxide or a second polyalkylene homopolymer having propylene oxide or butylenes oxide units and at least one corrosion inhibitor selected from the group of sarcosines, amine phosphates, and calcium dinonylnaphthalenesulfonate/carboxylates are provided. Lubricant compositions for extreme conditions are also provided.

Abstract: A process for improving the oxidation stability of lubricants including providing one or more esters containing branched alkyl groups which are reaction products of branched alcohols with a) one or more aliphatic dicarboxylic acids corresponding to general formula (II): HOOC—R2—COOH in which R2 is a branched or unbranched, saturated alkyl group containing 0 to 34 carbon atoms, or b) one or more saturated branched monocarboxylic acids corresponding to general formula (III): R3—COOH in which R3 is a branched alkyl group of 3 to 39 carbon atoms, or c) one or more saturated monocarboxylic acids corresponding to general formula (III) in which R3 is a linear alkyl group of 3 to 29 carbon atoms, or d) a mixture thereof, as lubricants, with the proviso that the esters have an oxidation stability of 1000 hours or more, as determined by the Turbine Oil Stability Test (TOST test) to DIN EN ISO 4263-3.

Abstract: There are provided a lubricating oil composition for a fluid dynamic bearing and and a hard disk drive (HDD) motor fabricated by using the same. The lubricating oil composition for a fluid dynamic bearing includes: an aliphatic mono carboxylic acid ester, as a base oil, obtained by esterification between carboxylic acid represented by the following Chemical Formula 1; and isopropyl alcohol: where n indicates an integer of 6 to 20. Therefore, the HDD motor is fabricated by using the lubricating oil composition for a fluid dynamic bearing having low viscosity, low evaporation loss, and improved oxidation stability at room temperature, whereby quality reliability according to the use of the motor for a long period of time may be improved.

Abstract: There are provided a lubricating oil composition for a fluid dynamic bearing and a hard disk drive (HDD) motor fabricated using the same. The lubricating oil composition for a fluid dynamic bearing includes: an aliphatic mono carboxylic acid ester, as a base oil, obtained by esterification between alcohol represented by the following Chemical Formula 1; and 2-ethylbutanoic acid: where n indicates an integer of 6 to 20. Therefore, the HDD motor is fabricated by using the lubricating oil composition for a fluid dynamic bearing having low viscosity, low evaporation loss, and improved oxidation stability at room temperature, whereby quality reliability according to the use of the motor for a long period of time may be improved.

Abstract: There are provided a lubricating oil composition for a fluid dynamic bearing and a hard disk drive (HDD) motor fabricated by using the same. The lubricating oil composition for a fluid dynamic bearing, includes: aliphatic mono carboxylic acid ester having a total of carbon numbers of 26 to 40, as a base oil, obtained by esterification between alcohol represented by the following Chemical Formula 1; and a straight or branched saturated aliphatic mono carboxylic acid having carbon numbers of 2 to 16: where R1 and R2 indicate straight or branched alkyl groups that are the same or different and have carbon numbers of 1 to 10.

Abstract: The present invention provides a lubricating oil composition comprising at least one type of base oil selected from mineral oils and synthetic oils, and a succinate ester and a sarcosinic acid as rust prevention agents. The succinate ester content is preferably set at 0.01 to 0.1 wt. %, and the sarcosinic acid content is preferably set at 0.001 to 0.01 wt. %. Further, they are preferably set such that the resulting weight ratio of the succinate ester content and sarcosinic acid content is 1:0.01 to 0.7. The lubricating oil composition according to the present invention shows excellent rust prevention properties and a satisfactorily long oxidation lifetime. Further it allows to attain a high level of anti-sludge performance and extreme pressure performance and lubrication performance, even when it is used for example in turbine bearings in combined cycle generators having multiplier gears operated under severe high temperature and high pressure conditions.

Abstract: 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.

Abstract: The present invention relates to a method of driveline device by supplying to the driveline device a lubricating composition containing an oil of lubricating viscosity and an antiwear package, wherein the antiwear package includes: (a) derivatives of a carboxylic acid (typically a hydroxycarboxylic acid); and (b) a phosphorus compound. The invention further provides lubricating compositions containing an oil of lubricating viscosity and an antiwear package, wherein the antiwear package includes (a) derivatives of a carboxylic acid (typically a hydroxycarboxylic acid); and (b) an amine or metal salt of a phosphorus compound that is either (i) a hydroxy-substituted di-ester of (thio)phosphoric acid, or (ii) a phosphorylated hydroxy-substituted di- or tri-ester of (thio)phosphoric acid.

Abstract: The lubricating oil composition of the invention comprises a lubricant base oil, a 3,4,5-trihydroxybenzoic acid ester at 5-5000 ppm by mass, and a phosphorus compound at 0.001-10.0% by mass, based on the total mass of the lubricating oil composition. The lubricating oil composition of the invention significantly lowers wear and exhibits a stable low frictional coefficient, while having a high rust-preventing effect for iron-based sliding sections. The lubricating oil composition of the invention is therefore suitable for prolonged use, and exhibits a notable effect for energy savings as well due to its stable low frictional coefficient property.

Abstract: This invention is directed to a lubricant composition that is comprised of a continuous phase and a discontinuous phase, i.e., a two phase lubricant composition. The continuous phase and the discontinuous phase of the lubricant of this invention are oil or oil type compositions that are essentially insoluble in one another. The lubricant composition is comprised of a continuous phase base oil that is comprised of a low viscosity Group II, III, IV or GTL base stock or a blend of at least two of the Group II, III, IV and GTL base stocks, optionally including a low viscosity Group V base stock, with the continuous phase base oil having, independently, a viscosity of from 1 to 100 cSt at 100° C. The lubricant composition is further comprised of a discontinuous phase that is comprised of an ester composition having a mean average droplet size of from 0.01 microns to 20 microns, in which the ester composition is comprised of an ester compound having no ether linkages.

Abstract: A lubricating oil composition contains: at least one lubricating base oil selected from the group consisting of a mineral lubricating base oil and a synthetic lubricating base oil; (a) a neutral phosphorus compound; (b) at least one acid phosphorus compound selected from the group consisting of a specific acid phosphate amine salt and a specific acid phosphite; and (c) a sulfur compound.

Abstract: The present invention provides a lubricating oil composition comprising at least one type of base oil selected from mineral oils and synthetic oils, and a succinate ester and a sarcosinic acid as rust prevention agents. The succinate ester content is preferably set at 0.01 to 0.1 wt. %, and the sarcosinic acid content is preferably set at 0.001 to 0.01 wt. %. Further, they are preferably set such that the resulting weight ratio of the succinate ester content and sarcosinic acid content is 1:0.01 to 0.7. The lubricating oil composition according to the present invention shows excellent rust prevention properties and a satisfactorily long oxidation lifetime. Further it allows to attain a high level of anti-sludge performance and extreme pressure performance and lubrication performance, even when it is used for example in turbine bearings in combined cycle generators having multiplier gears operated under severe high temperature and high pressure conditions.

Abstract: The present invention relates to a lubricating composition containing an oil of lubricating viscosity and a star polymer that has at least two inner blocks, at least one of which is in turn bonded to one or more outer blocks. The invention further relates to methods of lubricating a mechanical device with the lubricating composition.

Abstract: A metal working oil composition which is used for a very small amount of oil-feeding type metal working methods comprising a base oil selected from the group consisting of natural fats, derivatives thereof and synthetic ester oils, and a phospholipid is disclosed. The metal working oil composition of the present invention has good lubricating properties and is suitable for processing metallic materials such as cast irons steel, stainless steel and the like by the very small amount of oil-feeding type metal working method.

Abstract: The disclosure relates to a cold rolling fluid, including: (a) a hydrocarbon base including at least 50 wt % of isoparaffins; (b) one or more frictional modifiers selected from among fatty alcohols, fatty acids, fatty amines, fatty acid esters, or polymer esters resulting from the esterification of alpha-olefin copolymers and dicarboxylic acids using alcohols; and (c) one or more phosphorous anti-wear and/or extreme pressure additives. The disclosure also relates to an emulsion containing the rolling fluid and to the use of the rolling fluid for cold-rolling steel.

Abstract: Described is a lubricating composition of an anti-wear agent or a combination of anti-wear agents having a reduced neurotoxicity, the anti-wear agent(s) being selected from triaryl phosphate compounds preferably substituted with one or more linear or branched alkyl group(s) including from 2 to 12 carbon atoms.

Abstract: A lubricating oil for use in hot-rolling oil for aluminum sheet, comprises: (a) a mineral oil having a kinematic viscosity of 80 mm2/second or less at 40° C.; (b) 1 to 14 mass % of a fatty acid having 10 to 22 carbon atoms; (c) 5 to 15 mass % of an oil and fat and/or a synthetic ester; (d) 5 to 10 mass % of a phosphorus-containing extreme-pressure agent; (e) 0.1 to 1 mass % of a polyoxyethylene alkyl amine; and 0.1 to 10 mass % of an organic acid salt of a copolymer composed of a (meth)acrylic acid salt, (meth)acrylamide, and at least one amine monomer, and the mass ratio of the component (c) to the component (d) (component (c)/component (d)) is 1/0.6 to 1/1. The lubricating oil for use in hot-rolling oil for aluminum sheet of the invention provides a high level of rolling lubricity, iron corrosion protection in a hot-rolling step and a rolled aluminum sheet with high sheet surface quality can be obtained.

Abstract: Low viscosity functional fluids are described which comprise glycols and an additive package that includes a fatty acid and a phosphate ester, such as a phosphate ester of an alkyl, alkenyl, or aryl alcohol. The fluids are particularly well-suit for use as DOT 3 or DOT 4 brake fluids and provide robust lubricity and corrosion inhibition.

Abstract: The invention relates to a lubricant composition based on modified, natural and renewable raw materials, the viscosity of which can be adjusted according to the application. The invention relates more particularly to biodegradable lubricant compositions.

Abstract: A bearing lubricant includes a base oil containing an ester compound consisting of 2-ethyl-2-methyl-1,3-propanediol and at least one of carboxylic acids having 5 to 12 carbon atoms, the ester compound being represented by the following formula (1), in which the base oil has a kinetic viscosity at approximately 40° C. of approximately 7 to 15 mPa, and has a pour point of approximately ?60° C. or less: where R1 and R2 represent hydrocarbon groups having 4 to 11 carbon atoms.

Abstract: A lubricant composition that is especially useful under extreme conditions, such as in wind turbine gearboxes, comprises a mixed feed glycol; a polyol ester; two particular antioxidants; a phosphorus-based extreme pressure additive; a yellow metal passivator; and at least one specified corrosion inhibitor. The composition passes testing according to ASTM D665B even at 168 hours from initiation, and/or the SKF-Emcor Test Method DIN 51802:1990.

Abstract: The invention provides a water-soluble metal working lubricant which is suitably employed particularly in press-working of aluminum material and which is excellent in both working properties and degreasing properties. The water-soluble metal working lubricant includes 85 mass % or less of water (A); 5 to 75 mass % of a metal salt of an organic carboxylic acid (B) wherein carboxylic acid residue has 8 or more carbon atoms in total and the acid/alkali ratio by mole is 1:0.5 to 1.1; 1 to 50 mass % of at least one metal salt (C) selected from among an organic phosphate ester metal salt, an organic phosphite ester metal salt, an organic phosphonate metal salt, and an organic borate ester metal salt, each having an alkyl group having 8 or more carbon atoms in total; and 10 to 80 mass % of a non-ionic surfactant (D).

Abstract: Formulations using tartaric compounds of the present invention in a low sulfur, low ash and low phosphorous lubricant lower wear, and friction and improves fuel economy.

Abstract: The invention concerns a method for cold rolling metals using an aqueous lubricant comprising: (1) at least a mixture based on at least an acid selected among saturated or unsaturated mono- or poly-carboxylic acids, comprising 5 to 40 carbon atoms; at least an acid phosphate ester of formula (RO)x-P(?O)(OH)x?, wherein: R is a hydrocarbon radical, optionally polyalkoxylated; x and x? being equal to 3; the carboxylic acid and/or the acid phosphate ester being optionally neutralized by an organic or mineral base; and (2) at least a natural or synthetic wax exhibiting a melting point not less than 50° C. and having an average particle size ranging between 0.5 and 10 ?m. The use of said lubricant enables to increase the productivity of the method by at least 15% relative to a method using a conventional lubricant.

Abstract: The present invention relates to the use of a polyalkylmethacrylate polymer to improve the air release of a functional fluid.

Abstract: A lubricant composition is provided for use in lubricating a conveyor track for bottles, cans, kegs and other containers for beverages and foodstuffs. The composition comprises a phosphate ester of the formula R1—(OCH2CH2)n—O—P(O)(OH)2 where n is in the range of from 0 to 10, and R1 is a C9 to C20 saturated or unsaturated alkyl group or a mixture of such alkyl groups; and water. The composition has a pH of from about 1 to about 3.5. The composition optionally further comprises a biocidal agent, an acid, and a synthetic surfactant. Also disclosed is a method for lubricating a conveyor track by applying an effective amount of such a lubricating composition.

Abstract: There is disclosed a lubricant additive composition comprising a thermally stable, zinc-free, phosphorous-containing antiwear agent. Moreover, a lubricant composition comprising the disclosed additive composition is also disclosed. Methods for making and using the disclosed compositions are disclosed.

Abstract: The present invention provides a lubricating oil composition comprising at least one type of base oil selected from mineral oils and synthetic oils, and a succinate ester and a sarcosinic acid as rust prevention agents. The succinate ester content is preferably set at 0.01 to 0.1 wt. %, and the sarcosinic acid content is preferably set at 0.001 to 0.01 wt. %. Further, they are preferably set such that the resulting weight ratio of the succinate ester content and sarcosinic acid content is 1:0.01 to 0.7. The lubricating oil composition according to the present invention shows excellent rust prevention properties and a satisfactorily long oxidation lifetime. Further it allows to attain a high level of anti-sludge performance and extreme pressure performance and lubrication performance, even when it is used for example in turbine bearings in combined cycle generators having multiplier gears operated under severe high temperature and high pressure conditions.

Abstract: Disclosed are lubricating oil compositions comprising a lubricating base oil, (A) a specific alkali metal or alkaline earth metal salicylate and/or an overbased or basic salt thereof in an amount of 0.005 to 5 percent by mass in terms of metal and (B) a phosphorus-containing anti-wear agent in an amount of 0.005 to 0.2 percent by mass in terms of phosphorus and containing sulfur in an amount of 0.3 percent by mass or less, based on the total mass of the composition, the salicylate being any of salicylates fulfilling specific requirements. The lubricating oil compositions are low sulfur lubricating oils which are extremely excellent in anti-wear properties and long drain properties and suitable for an internal combustion engine.

Abstract: The present invention provides a multifunctional lubricant additive or composition for improving load-carrying capacity, scuffing (scoring) resistance, and other performance characteristics of a lubricant. The composition includes a friction modifier, an antiwear additive, an extreme pressure additive, and a surface fatigue life modifier. The present invention further provides a method for improving the performance characteristics of a lubricant, which includes a step of mixing a lubricant base oil or fully formulated lubricant with the above-described multifunctional lubricant additive composition.

Abstract: A metal working oil composition which is used for a very small amount of oil-feeding type metal working methods comprising a base oil selected from the group consisting of natural fats, derivatives thereof and synthetic ester oils, and a phospholipid is disclosed. The metal working oil composition of the present invention has good lubricating properties and is suitable for processing metallic materials such as cast irons steel, stainless steel and the like by the very small amount of oil-feeding type metal working method.

Abstract: The invention provides a refrigerator oil composition comprising a base oil of a mineral oil and/or a synthetic oil, and containing (a) a partial ester of a polyalcohol and a fatty acid and (b) an acid phosphate or its amine salt; and a refrigerator oil composition comprising a base oil of a mineral oil and/or a synthetic oil, and containing any of (a) acid phosphates or their amine salts, (b) acetylene glycol alkylene oxide adducts, (c) potassium salts of fatty acids, etc., (d) organic acids, and (e) fatty acid amides. The refrigerator oil compositions have good lubricity and are especially effective for reducing the friction in both the oil region and the extreme-pressure region in the sliding area between aluminium materials and steel materials.

Abstract: A lubricating oil composition for internal combustion engine, comprising a lubricating base oil; (A) a triphosphate represented by formula (1) below in an amount of 0.01 to 0.2 percent by mass in terms of phosphorus; (B) succinimide and/or derivative thereof in an amount of 0.01 to 0.3 percent by mass in terms of nitrogen; (C) an alkali metal or alkaline earth metal detergent in an amount of 0.05 to 1 percent by mass in terms of metal; and (D) a phenol-based and/or amine-based anti-oxidants in an amount of 0.

Abstract: The invention concerns the use as extreme pressure additive in aqueous lubricants used for deforming or transforming metals, lamellar crystallites having a length (L) ranging between 0.1 and 100 &mgr;m, a width (I) ranging between 0.