Abstract: Disclosed are lubricating oil compositions excellent in friction reducing effect and long drain properties and particularly suitable for internal combustion engines, which comprise a lubricating base oil, a specific phosphorus compound in an amount of 0.005 to 0.5 percent by mass in terms of phosphorus based on the total mass of the composition, and at least one additive selected from the group consisting of (C) metallic detergents, (D) ashless dispersants, and (E) anti-oxidants, and further contains (F) a sulfur-containing organic molybdenum complex and (G) an ashless friction modifier and which satisfy prescribed requirements and have a sulfated ash content not exceeding a specified level.

Abstract: Antimony dithiocarbamate is known to provide extreme pressure (EP) protection in lubricating compositions, such as grease. However, there is a desire to reduce the amount of antimony used in such compositions, while still maintaining acceptable EP performance. It has now been found by using small amounts of either ammonium dithiocarbamate or zinc dithiocarbamate in combination with the antimony dithiocarbamate (SbDTC), a lower amount of SbDTC can be used in the lubricating composition while still maintaining excellent or exceptional EP protection. To counteract the corrosive effects of the SbDTC and ammonium dithiocarbamate composition, it has been found that compounds containing a carboxylic acid group are effective in avoiding copper corrosion.

Abstract: The invention provides a lubricating composition containing an oil of lubricating viscosity, an oil soluble molybdenum compound, and an ashless antiwear agent. The invention further provides for a new antioxidant. The lubricating composition is suitable for lubricating an internal combustion engine.

Abstract: An additive for imparting antiwear properties to a lubricant composition is based on a combination of (1) an organo borate ester composition and (2) one or more sulfur- or phosphorus-containing compounds or a non-sulfur molybdenum compound. The sulfur- or phosphorus-containing compounds are dithiocarbamate, bisdithiocarbamate, 1,3,4-diathiazole, phosphorodithioate, phosphorodithioate esters, and the molybdenum compound is prepared by reacting (a) about 1.0 mole of fatty oil having 12 or more carbon atoms, (b) about 1.0 to 2.5 moles diethanolamine and (c) a molybdenum source.

Abstract: The present invention provides a composition for improving load carrying capacity, extreme pressure performance, surface fatigue life, and other performance characteristics of a lubricant. The composition includes a base stock and a combination of two, three, or all of a friction modifier, and 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. The method includes a step of mixing a lubricant with the above-described multifunctional lubricant additive composition or mixing a lubricant base stock with the above-described multifunctional lubricant additive composition.

Abstract: The present invention provides a multifunctional lubricant additive package or composition for improving load-carrying capacity, scuffing (scoring) resistance, and other performance characteristics of a lubricant. The composition includes a molybdenum compound, a secondary zinc dithiophosphate compound, an aryl or alkyl phosphite compound, and a compound having an alkylthiocarbamoyl group. The present invention further provides a method for improving the performance characteristics of a lubricant. The method includes mixing a lubricant base stock or a fully-formulated lubricant with the above-described multifunctional lubricant additive composition.

Abstract: An antioxidant lubricant composition has at least 50 wt % of a lubricating base oil and an oil-soluble metal compound providing between 1 and 2,000 parts per million of metal to the lubricant composition, the metal compound being chosen from the group consisting of molybdenum, tungsten titanium and boron compounds, and an oil-soluble hindered amine providing between about 0.001 and about 2 wt % of oil-soluble hindered amine to the lubricant composition, and optionally, an oil-soluble diarylamine providing between 0.001 and about 2 wt % of oil-soluble diarylamine to the lubricant composition.

Abstract: A lubricant composition for improved phosphorus retention of a used oil and a method for decreasing catalyst deactivation in a catalytic system for an engine exhaust. The lubricant composition is provided by a base oil and an additive composition that contains a phosphorus-containing additive mixture. The phosphorus-containing additive mixture includes an ash-containing phosphorus compound and an ash-free phosphorus compound. A phosphorus retention value provided by the lubricant composition is greater than about 85 percent after oil aging based on an amount of phosphorus initially present in the lubricant composition.

Abstract: A process for making an additive comprising one or more oil-soluble or oil-dispersible molybdenum-sulfur compounds, said process comprising the steps of: (I) reacting in a polar medium a reactant molybdenum compound (A) and a source of a ligand (B), which ligand (B) is capable of rendering the or each molybdenum-sulfur compound oil-soluble or oil-dispersible; and (II) reacting a compound (C), which is capable of reacting with labile sulfur, either with (a) the reaction mixture of step (I) after the reaction of (A) and (B) has begun or (b) the product of step (I). The additive has improved color characteristics and a lubricating oil composition comprising said additive is more benign to corrosion of metals.

Abstract: A lubricating oil with very low phosphorus content, and having long life as evidenced by a reduction in viscosity increase, oxidation and nitration, comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of neutral and overbased metallic detergents, at least a zinc dialkyldithiocarbamate and a zinc dialkyldithiophosphate antiwear additive and at least a dihydrocarbylthiocarbamoyl.

Abstract: The invention relates to a lubricating composition comprising a base oil of lubricating viscosity, a hydroxy-substituted dithiocarbamate, an organo-molybdenum compound, and optionally a phosphorous source.

Abstract: The present invention relates to a coating solution to be applied on the surface of metals or metal alloys, a process for cold forming of metals and metal alloys using said coating solution, and a coated blank made of a metal or a metal alloy.

Abstract: A pivot assembly bearing used in an information storage device maintains its capabilities for a longer period of time under frequent quick starting and stopping by containing a grease composition made up of a base oil, a thickener and an extreme-pressure agent.

Abstract: A crankcase lubricating oil composition comprises an oil of lubricating viscosity, in a major amount, and, in respective minor amounts, a boron-containing additive and one or more co-additives, wherein the lubricating oil composition has greater than 200 ppm by mass of boron, less than 600 ppm by mass of phosphorus and less than 4000 ppm by mass of sulfur, based on the mass of the oil composition. Such compositions demonstrate provide improved wear performance.

Abstract: A lubricating oil composition which exhibits improved fuel economy and fuel economy retention which contains a mono-, di- or triester of a tertiary hydroxyl amine and a fatty acid as a friction modifying fuel economy additive.

Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of polysulfurized olefins. The lubricating compositions have improved antiwear properties. When the lubricating composition is used in a manual transmission, the amount of brass wear is reduced.

Abstract: A lubricating oil composition that has excellent antiwear properties and is especially useful for internal combustion engine comprises a lubricating base oil and contains the following components: sulfoxymolybdenum dithiocarbamate, zinc dialkyldithiophosphate and a mixture of 100 to 50% by weight of calcium alkylsalicylate and 0 to 50% by weight of magnesium alkylsalicylate, the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate being from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorus derived from the zinc dialkyldithiophosphate being from 0.04 to 15% by weight of the total weight of the composition, and the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate being from 1 to 10% by weight of the total weight of the composition.

Abstract: A urea grease composition is provided containing a lubricating base oil and from 2 to 30 wt.

Abstract: A lubricating composition containing the reaction product (a) of an aldehyde, amine and a di-secondary alkyl hindered phenol and at least one additive selected from the group consisting of hydrocarbyl diphenylamines, sterically hindered phenols other than component (a), metal hydrocarbyl dithiophosphates, sulphurised olefins and mixtures thereof. The composition has antioxidant properties for internal combustion engines without the bioaccumulation of tris-tert-butyl phenol.

Abstract: A lubricating oil composition which exhibits improved fuel economy and fuel economy retention which contains a mono-, di- or triester of a tertiary hydroxyl amine and a fatty acid as a friction modifying fuel economy additive.

Abstract: This invention relates to a lubricating oil composition, comprising: (A) a base oil; (B) a molybdenum and sulfur containing composition derived from a basic nitrogen containing compound, a molybdenum compound and carbon disulfide; (C) a boron-containing compound; and (D) optionally a phosphorus containing compound, provided the phosphorus content of the lubricating oil composition does not exceed about 0.10% by weight.

Abstract: A lubricant composition comprising a major amount of an oil of lubricating viscosity and a minor amount of:

Abstract: The lubricating compositions of the present invention are designed for use in a four stroke outboard marine engine and contain an oil of lubricating viscosity, an ashless dispersant, a metal detergent, a rust inhibitor system comprising a combination of certain rust inhibitors with an ethoxylated alkyl phenol, a relatively high amount of ZDDP, and an amount of a molybdenum compound sufficient to provide the composition with 15-1,000 ppm by mass of molybdenum. An amount of about 15 ppm to 1,000 ppm by mass of molybdenum from a molybdenum compound has been found to be effective as an antiwear agent in combination with the high levels of ZDDP.

Abstract: This invention relates to a diesel engine lubricant composition comprising a base stock, a dispersant and an antioxidant comprising an oil soluble trinuclear organomolybdenum compound of the generic formula (I): Mo3Sx—(Q), wherein x is from 4 to 10 and Q is a core group, which may be a ligand, and at least one other compound selected from a phenolic and an aminic compound. The composition is capable of controlling the viscosity of the lubricant in the presence of soot and to retain the dispersancy of the dispersant. The compositions of the present invention minimise wear in engines and undesirable emission from exhaust caused by incomplete combustion from vehicles which use diesel engines and lubricants therefor. The combination of antioxidants perform better at controlling soot induced viscosity increase than the individual compounds.

Abstract: A long life lubricating oil, as evidenced by a reduction in oil thickening, oxidation and nitration, comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of neutral and overbased metallic detergents and at least one trinuclear molybdenum compound.

Abstract: A dispersant that is a reaction product of a polyalkenyl-substituted mono- or dicarboxylic acid, anhydride or ester; and a polyamine, wherein the reaction product has from greater than about 1.3 to less than about 1.7 mono- or di-carboxylic acid producing moieties per polyalkenyl moiety, and the polyalkenyl moiety has a number average molecular weight of at least about 1800, and a molecular weight distribution (Mw/Mn) of from about 1.5 to about 2.0.

Abstract: This invention relates to a lubricating oil composition comprising a base stock and an antioxidant comprising an oil soluble trinuclear organomolybdenum compound of the generic formula: Mo3Sx—(Q) (1) wherein x is from 4 to 10 and Q is a core group, which may be a ligand, and at least one other compound selected from a phenolic and an aminic compound wherein the basestock has a kinematic viscosity at 100° C. (KV100) from about 2 cSt to 20 cSt (2×10−6 to 20×10−6 m2/sec) and a saturates content of at least 85%. The composition has a high oxidation stability, reduced deposit formation and is capable of giving rise to good fuel economy improvement.

Abstract: Lubricating oil compositions containing a major amount of oil of lubricating viscosity, an oil soluble molybdenum compound in an amount providing the composition with from 0.001 to 0.1 mass % molybdenum, an oil soluble copper antioxidant in an amount providing the composition with from 0.001 to 0.02 mass % copper to said composition, and an amount of metal hydrocarbyl dithiophosphate providing the composition with from 100 to 550 ppm phosphorus.

Abstract: A grease composition for bearings of information devices comprising a carbonate base oil, a lithium soap, and at least one organomolybdenum compound selected from molybdenum dithiophosphates and molybdenum dithiocarbanates.

Abstract: A lubricating composition for internal combustion engines especially useful with fuels having less than 350 ppm sulfur comprises a lubricating oil basestock, a boron containing ashless dispersant, a molybdenum containing friction reducing agent, a metal type detergent and zinc dithiophosphate.

Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of polysulfurized olefins. The lubricating compositions have improved antiwear properties. When the lubricating composition is used in a manual transmission, the amount of brass wear is reduced.

Abstract: This invention relates to a method of controlling the soot induced viscosity increase of a diesel engine lubricant composition comprising a base oil and a dispersant, by including in said lubricant composition an effective amount of an antioxidant, characterised in that the antioxidant comprises a dihydrocarbyldithiocarbamate of a metal selected from antimony, bismuth and mixtures thereof. The antioxidant may optionally contain at least one other compound selected from a phenolic and an aminic compound. The method of the present invention improves the performance retention of the dispersant additive, and thus inhibits the soot-induced viscosity increase of the lubricant.

Abstract: This invention relates to a lubricating oil composition comprising a base stock and an antioxidant comprising an oil soluble trinuclear organomolybdenum compound of the generic formula: Mo3Sx-(Q) (I) wherein x is from 4 to 10 and Q is a core group, which may be a ligand, and at least one other compound selected from a phenolic and an aminic compound wherein the basestock has a kinematic viscosity at 100° C. (KV100) from about 2 cSt to 20 cSt (2×10−6 to 20×10−6 m2/sec) and a saturates content of at least 85%. The composition has a high oxidation stability, reduced deposit formation and is capable of giving rise to good fuel economy improvement.

Abstract: The present invention relates to a coating solution to be applied on the surface of metals or metal alloys, a process for cold forming of metals and metal alloys using said coating solution, and a coated blank made of a metal or a metal alloy.

Abstract: The invention relates to a lubricating composition comprising a base oil of lubricating viscosity, a hydroxy-substituted dithiocarbamate, an organo-molybdenum compound, and optionally a phosphorous source.

Abstract: Engine oil compositions are provided containing (A) a lubricating base oil having a kinematic viscosity at 100° C. of 3 to 6 mm2/S, a viscosity index of 120 or more, and a total aromatic content of 5 percent by mass or less and (B) a polymethacrylate-based viscosity index improver, preferably having a weight average molecular weight of 180,000 or more, (A) and (B) being blended in such an amount that the composition has a kinematic viscosity at 100° C. of 4.0 to 9.3 mm2/s. The engine oil compositions may also contain a molybdenumdithiocarbamate, as well as one or more other engine oil additives. The engine oil compositions preferably have a high-temperature, high shear viscosity at 150° C. of 2.4 to 2.7 mPa·s, a NOACK evaporation loss of 16 percent by mass or less, and a CCS viscosity at −25° C. of 3500 mPa·s or less.

Abstract: The lubricating compositions of the present invention are designed for use in a four stroke outboard marine engine and contain an oil of lubricating viscosity, an ashless dispersant, a metal detergent, a rust inhibitor, a relatively high amount of ZDDP, and an amount of a molybdenum compound sufficient to provide the composition with 15-1,000 ppm by mass of molybdenum. An amount of about 15 ppm to 1,000 ppm by mass of molybdenum from a molybdenum compound has been found to be effective as an antiwear agent in combination with the high levels of ZDDP.

Abstract: An engine oil composition characterized by containing a major amount of lubricating base oil and (a) 0.01 to 30% by weight of an overbasic oil-soluble metal salt prepared by use of an alkaline-earth metal borate, (b) 0.01 to 5% by weight of a molybdenum dithiocarbamate, and (c) 0.01 to 5% by weight of an antioxidant as essential components, on the basis of the total amount of the composition.

Abstract: Engine oil compositions are provided containing (A) a lubricating base oil having a kinematic viscosity at 100° C. of 3 to 6 mm2/S, a viscosity index of 120 or more, and a total aromatic content of 5 percent by mass or less and (B) a polymethacrylate-based viscosity index improver, preferably having a weight average molecular weight of 180,000 or more, (A) and (B) being blended in such an amount that the composition has a kinematic viscosity at 100° C. of 4.0 to 9.3 mm2/s. The engine oil compositions may also contain a molybdenumdithiocarbamate, as well as one or more other engine oil additives. The engine oil compositions preferably have a high temperature, high shear viscosity at 150° C. of 2.4 to 2.7 mPa·s, a NOACK evaporation loss of 16 percent by mass or less, and a CCS viscosity at −25° C. of 3500 mPa·s or less.

Abstract: To provide a pivot assembly bearing enable maintain it's capabilities longer under frequent quick start and quick stop, the pivot assembly bearing is dispensed a grease composition comprising a base oil, a thickener and an extreme-pressure agent.

Abstract: A lubricating composition for internal combustion engines especially useful with fuels having less than 350 ppm sulfur comprises a lubricating oil basestock, a boron containing ashless dispersant, a molybdenum containing friction reducing agent, a metal type detergent and zinc dithiophosphate.

Abstract: A composition comprising: a high-sulfur API Group I mineral oil base stock; a molybdenum dithiocarbamate in an amount suitable to provide 50 to about 600 ppm molybdenum to the composition; a succinimide dispersant based on a polyolefin-substituted succinic structure, where the polyolefin has a number average molecular weight of at least 1500; a zinc dialkyldithiophosphate derived from at least one secondary alcohol; and a hindered phenol, alkylated aromatic amine, or sulfurized olefin oxidation inhibitor, is capable of passing a Sequence III test.

Abstract: An engine oil having a base oil and a friction reducing amount of an oil soluble sulfurized or unsulfurized oxymolybdenum complex prepared from reacting, in the presence of a polar promoter, an acidic molybdenum compound and a basic nitrogen compound and a low concentration of a sulfurized oxymolybdenum dialkyldithiocarbamate; employed together to provide at least 450 parts per million of molybdenum and less than 175 parts per million of molybdenum from the dialkyldithiocarbamate, both on the basis of the engine oil.

Abstract: The boundary friction properties of lubricating oils are improved by including at least one polymeric ethylene-alpha-olefin copolymer derived dispersant and a molybdenum compound into a lubricating oil of a lubricating viscosity. A concentrate for addition into an oil of lubricating viscosity is also disclosed.

Abstract: A fluid power steering gear (10) comprises a housing (16). A power steering fluid (34) is disposed within the housing (16). A seal (50) contains the power steering fluid (34) within said housing (16). A member (20) extends through the housing (16) and the seal (50). The member (20) is movable relative to the housing (16) and the seal (50) in response to a change in the fluid pressure in the housing (16). The power steering fluid (34) comprises a base oil and a metal-free lubricant additive. The metal-free lubricant additive is soluble in the base oil and modifies the interfacial surface tension between the base oil and the member (20) and the base oil and the seal (50). The weight percent of the metal-free lubricant additive is about 0.1% to about 5.0%, by weight of the power steering fluid (34).

Abstract: A grease composition for steering of motorcars which comprises the following components (a) to (f): (a) a thickening agent; (b) a base oil having a pour point of not higher that −40° C.; (c) an organic molybdenum compound; (d) melamine cyanurate; (e) polytetrafluoroethylene; and (f) molybdenum disulfide. The grease composition has load resistance, or seizure-preventing ability and wear-reducing ability high enough to use the grease under severe lubricating conditions, and can impart, to the steering of motorcars, excellent operability at a low temperature.

Abstract: An SAE OW-30 or 5W-30 or 5W-20 lubricant has a Noack volatility of less than 15, optionally an M-111 fuel economy of 1.5% or less, and a chlorine content of less than 100 ppm. The lubricant comprises a basestock containing from 0 to less than 10% Group I and/or Group II basestocks, a molybdenum additive providing not greater than 1000 ppm of molybdenum to the lubricant, a calcium detergent providing 10 or greater mmoles of surfactant per kilogram of lubricant, one or more other additives, and a viscosity modifier.

Abstract: The present invention is directed to a grease for a rolling bearing containing poly-&agr;-olefin synthetic oil or diphenyl ether synthetic oil, a diurea thickening agent, and an organic antimony compound or an organic molybdenum compound. The present invention is also directed to a rolling bearing in which the grease for a rolling bearing is sealed. The organic antimony compound or the organic molybdenum compound reacts with a metal composing inner and outer bearing rings and a rolling element to form a compound film contributing to the reduction of the force in the tangential direction on a raceway surface of the bearing rings and a surface of the rolling element, thereby preventing an excessively large force in the tangential direction under high-speed rotation. This enables to lengthen the life of the rolling bearing used under particularly severe conditions such as high temperature, high-speed rotation and high road.

Abstract: There is disclosed a lubricating oil composition which contains from about 100 to 450 parts per million of molybdenum from a molybdenum compound which is substantially free of active sulfur and about 750 to 5,000 parts per million of a secondary diarylamine. This combination of ingredients provides improved oxidation control and friction modifier performance to the lubricating oil. The composition is particularly suited for use as a crankcase lubricant.

Abstract: There is disclosed a lubricating oil composition which contains from about 100 to 450 parts per million of molybdenum from a molybdenum compound which is substantially free of active sulfur and about 750 to 5,000 parts per million of a secondary diarylamine. This combination of ingredients provides improved oxidation control and friction modifier performance to the lubricating oil. The composition is particularly suited for use as a crankcase lubricant.