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: Lubricating oil compositions exhibititing improved low temperature valve train wear performance with a lowered phosphorus content, which contain a reduced amount of a metal hydrocarbyl dithiophosphate, a molybdenum compound, a metal-free friction modifier and a phosphorus-free antioxidant.

Abstract: Organo molybdenum containing oils of lubricating viscosity having improved high temperature frictional properties are made using semi-packages of additives. The semi-packages contain: (A) a dispersant, a zinc salt, and a detergent and (B) an organo molybdenum compound. The packages are formed individually prior to mixing.

Abstract: A heavy duty diesel engine lubricating oil composition having no more than 0.10 wt. % phosphorus comprises an ashless dispersant, a neutral calcium phenate, an overbased calcium or magnesium sulfonate, a metal dihydrocarbyldithiophosphate, and a phenolic or aminic antioxidant.

Abstract: A lubricant for use in a refrigerator which operates with a chlorine-free Flon (fluorocarbon)-type refrigerant whose molecules do not contain chlorine. The lubricant contains a synthetic oil, and molybdenumoxysulfide diorganophosphorodithioate given by the following formula (1) and/or molybdenumoxysulfide diorganodithiocarbamate given by the following formula (2), the content of the compounds of formulae (1) and (2) in total ranges from 0.1 to 10 wt % to the content of the synthetic oil: {(RO)2PS2}2Mo2SXOY  (1) where R represents a hydrocarbon group having 3 to 20 carbon atoms, and X and Y are numbers which meet the conditions of O≦X≦4, 0≦Y≦4 and X+Y=4; and (R′2NCS2)2Mo2SX′OY′  (2) where R′ is a hydrocarbon group having 3 to 20 carbon atoms and X′ and Y′ are numbers which meet the conditions of )≦X′≦4, 0≦Y′≦4 and X′+Y′=4.

Abstract: A silicon elastomer compatible constant velocity joint grease comprises a urea grease composed of a lubricating oil and a urea thickener and an effective amount of a friction reducing additive package comprising vermiculite, molybdenum oxysulfide dithiocarbamate, polyphenylene sulfide and potassium triborate. The additive package solids have particle sizes below about 40 microns.

Abstract: A grease composition for constant velocity joints comprises the following components: (a) a base oil; (b) a diurea type thickening agent represented by the following formula (1): R1NH—CO—NH—C6H4—p—CH2—C6H4—p—NH—CO—NHR2  (1) (in the formula (1), R1 and R2 may be the same or different from one another and each represents an aryl group or a cycloalkyl group having 6 or 7 carbon atoms); (c) a molybdenum sulfurized dialkyl dithiocarbamate; (d) a molybdenum sulfurized dialkyl dithiophosphate; (e) molybdenum disulfide; (f) a calcium salt of an alkylaromatic sulfonic acid; and (g) a phosphorus free-and sulfur-containing extreme-pressure additive. The grease composition for constant velocity joints according to the present invention has a high ability of reducing the induced thrust force and is excellent in the durability.

Abstract: This invention relates to a fretting-resisting roller bearing of which the various characteristics are not adversely affected and which achieves a higher temperature and a higher speed as well as a longer life. In a roller bearing comprised of a plurality of rolling elements held between inner and outer races with a cage interposed therebetween, the oil film of lubricating oil of which the dynamic viscosity at 40° C. is 20 to 150 mm2/s is formed on the raceway surfaces of the inner and outer races, the cage and the rolling elements and grease is enclosed.

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: The present invention provides for a lubricant oil composition for internal combustion engines for automobiles with enhanced friction loss reduction and is especially suitable for a pressure-accumulating (common rail) type diesel engine equipped with an EGR system. The lubricant oil composition contains a base oil composed of a mineral and/or synthetic oil incorporated with at least four additives of (A) at least one type of organomolybdenum compound selected from the group consisting of sulfurized oxymolybdenum dithiocarbamate, sulfurized oxymolybdenum dithiophosphate, molybdenum phosphate and molybdenum-amine complex at 0.01 to 0.20 wt. % as Mo, (B) zinc dialkyl dithiophosphate at 0.01 to 0.50 wt. % as P, (C) one of Ca and Mg salts of alkyl salicylate at 0.05 to 1.0 wt. % as Ca or Mg and (D) Zn salt of alkyl salicylate at 0.005 to 0.2 wt.

Abstract: A ball screw is provided which makes it easy to determine the degree of deterioration of lubricating grease so that new lubricating grease can be supplied efficiently without loss. The ball screw includes a threaded shaft formed with a thread groove in its outer peripheral surface, a nut formed with a thread groove in its inner peripheral surface, and a plurality of balls rollably retained in a circulating passage comprising a helical passage formed between these thread grooves when the nut is fitted on the threaded shaft, and a passage connecting both end of the helical passage. The balls and the circulating passage are lubricated by a lubricating grease which has a brightness of 1 or over and in which a base oil having a viscosity at 100° C. of 3.0-7.5 mm2/s is thickened by a urea-family thickener.

Abstract: A grease composition for constant velocity joints comprises the following components: (a) a base oil; (b) a diurea type thickening agent; (c) a molybdenum sulfurized dialkyl dithiocarbamate; (d) molybdenum disulfide; (e) at least one sulfur-phosphorus-containing extreme-pressure agent selected from the group consisting of zinc dithiophosphate compounds and thiophosphates; and (f) a fatty acid amide. The grease composition of the present invention has a high ability of reducing the induced thrust force and is excellent in the durability.

Abstract: A lubricating oil composition exhibiting improved low temperature anti-wear performance and improved fuel economy and fuel economy retention properties, which comprises: (a) an oil of lubricating viscosity; (b) at least one calcium detergent; (c) at least one oil soluble molybdenum compound; (d) at least one nitrogen containing friction modifier; and (e) at least one zinc dihydrocarbyldithiophosphate compound, wherein the composition has a NOACK volatility of about 15.5 wt. % or less and contains from about 0.058 to 0.58 wt. % calcium from the calcium detergent, molybdenum in an amount up to about 350 ppm from a molybdenum compound, and phosphorus in an amount up to about 0.1 wt. % from a zinc dihydrocarbyldithiophosphate compound.

Abstract: Engine oil compositions comprise (A) a lubricating base oil having a kinematic viscosity at 100° C. of 2 to 6 mm2/S, a viscosity index of 120 or more, and a total aromatics content of 15 percent by mass or less and (B) a polymethacrylate-based viscosity index improver in such an amount that the composition has a kinematic viscosity at 100° C. of 4.0 to 9.3 mm2/s. Disclosed are also engine oil compositions which comprise (A) a lubricating base oil having a kinematic viscosity at 100° C. of 2 to 6 mm2/S, a viscosity index of 120 or more, and a total aromatics content of 15 percent by mass or less; (B) a polymethacrylate-based viscosity index improver in such an amount that the composition has a kinematic viscosity at 100° C. of 4.0 to 9.3 mm2/s; and (C) molybdenumdithiocarbamate.

Abstract: High oleic acid triglyceride compositions that comprise fatty acid components of at least 75% oleic acid, less than 10% diunsaturated fatty acid component; less than 3% triunsaturated fatty acid component; and less than 8% saturated fatty acid component; and having the properties of a dielectric strength of at least 35 KV/100 mil gap, a dissipation factor of less than 0.05% at 25° C., acidity of less than 0.03 mg KOH/g, electrical conductivity of less than 1 pS/m at 25° C., a flash point of at least 250° C. and a pour point of at least −15° C. are disclosed. Electrical insulation fluids comprising the triglyceride composition are disclosed. Electrical insulation fluids that comprise the triglyceride composition and a combination of additives are disclosed. Electrical apparatuses comprising the electrical insulation fluids and the use of electrical insulation fluids to provide insulation in electrical apparatuses are disclosed.

Abstract: A rolling device is made up of a plurality of rolling bodies provided between an outer member having a first contact face with each of the plurality of rolling bodies and an inner member having a second contact face with each of the plurality of rolling bodies wherein the plurality of rolling bodies individually are able to roll relative to the first and second faces. A grease composition is sealedly filled in between the outer member and the inner member and contains a carbonate compound serving as a base oil, a lithium soap serving as a thickener, and at least one organomolybdenum compound selected from the group consisting of a molybdenum dithiophosphate and a molybdenum dithiocarbamate.

Abstract: The present invention relates to a grease composition for a constant velocity joint, which has a low coefficient of friction to decrease the vibrations of CVJ, which comprises a base oil, a urea thickening agent, (A) a molybdenum dialkyldithiocarbamate, (B) at least one molybdenum di(alkyl or aryl)dithiophosphate represented by formula (I): wherein R1 represents a primary or secondary alkyl group or an aryl group, and (C) at least one sulfur-containing additive selected from the group consisting of an ashless dithiocarbamate, a polysulfide, zinc dithiocarbamate, sulfurized fat and oil, an olefin sulfide, a sulfur-phosphorus extreme pressure additive, and a thiadiazole extreme pressure additive, wherein each of the components (A), (B) and (C) is in an amount of 10% by weight or less based on the total weight of the grease composition.

Abstract: There is provided a lubricating composition including a lubricating base containing an asymmetric sulfurized oxymolybdenum dithiocarbamate of the formula (1); a symmetric sulfurized oxymolybdenum dithiocarbamate of the formula (2); and a phenolic or aminic antioxidant. (wherein R1 to R5 are each a hydrocarbon group, provided that R1 to R4 are not concurrently the same group; and X1 to X8 are each a sulfur atom or an oxygen atom.) This lubricating composition meets both the required solubility of additives in base oils and long drain properties concurrently.

Abstract: The present invention relates to a lubricant oil composition, comprising a base oil composed of a mineral and/or synthetic oil incorporated with at least two types of additives (A) and (B) described below, characterized by being used for diesel engines operating with large quantities of soot in their oil, in particular those equipped with an exhaust gas recirculation (EGR) system: (A) sulfurized oxymolybdenum dithiocarbamate at 0.03 to 0.50 wt % as Mo, based on the whole composition, and (B) zinc dialkyl dithiophosphate at 0.04 to 0.50 wt % as P, also based on the whole composition.

Abstract: A lubricant composition is described, particularly for engine oils, comprising a base oil of viscosity from 3 to 26 cSt (mm2/s) at 100° C. and an antiwear additive combination comprising (a) an oil soluble or oil dispersible phosphorus-free organo-molybdenum compound, (b) an ashless, sulfur-containing organo-phosphorus compound, and optionally (c) a zinc thiophosphate compound selected from one or more of zinc dialkyldithiophosphate, zinc diaiyldithiophosphate, zinc alkylaiyldithiophosphate and zinc arylalkyldithiophosphate. The molybdenum compound may be a carbamate, e.g., MoDTC but is preferably nitrogen-free, e.g., a carboxylate.

Abstract: A lubricating oil composition exhibiting improved fuel economy and wet clutch friction properties, which comprises: (a) an oil of lubricating viscosity; (b) at least one calcium or magnesium overbased detergent; (c) an oil soluble dimeric molybdenum compound; (d) an oil soluble organic trinuclear molybdenum compound; (e) at least one zinc dihydrocarbyldithiophosphate compound, wherein the composition has a TBN of at least 3.6 from the calcium or magnesium overbased detergent, a NOACK volatility of about 15 wt. % or less, molybdenum in an amount up to about 350 ppm from the trinuclear molybdenum compound, molybdenum in an amount up to 2,000 ppm from the dimeric molybdenum compound, and phosphorus in an amount up to about 0.1 wt. % from a zinc dihydrocarbyldithiophosphate compound.

Abstract: An engine oil composition is composed of: (1) at least one oil selected from the group consisting of a mineral oil and a synthetic lubricant as a base oil; (2) a molybdenum dithiocarbamate in an amount of 50 to 2000 ppm by weight when calculated as molybdenum (Mo), relative to the total weight of the engine oil composition; (3) zinc dithiophosphate in an amount of 0.01 to 0.2 wt % when calculated as phosphorus (P), relative to the total amount of the engine oil composition; and (4) an ashless organic polysulfide compound in an amount of 0.01 to 0.4 wt % when calculated as sulfur (S), relative to the total amount of the engine oil composition.

Abstract: An oil composition for continuously variable transmissions (CVT) comprising a base oil, (A) a sulfonate, (B) an ashless dispersant, (C) an acid amide, (D) an organomolybdenum compound, and (E) an amine antioxidant.The oil composition for CVT prevents the scratching phenomenon while the transmitted power is kept large in CVT of a belt type used for automatic transmissions of automobiles. The gradient in the .mu.-V characteristic can be kept positive for a long time.

Abstract: A lubricating composition comprising a base oil in combination with molybdenum dithiocarbamate, zinc naphthenate and one or more metal dithiophosphates, and optionally one or more metal dithiocarbamates. A lubricating grease comprising such a composition in combination with a thickener, is particularly suitable for lubricating constant velocity joints.

Abstract: This invention relates to synergistic antiwear compositions comprising an organomolybdenum complex and an organic sulfuir compound selected from 2,5-dimercapto-1, 3,4-thiadiazole derivatives, bisdithiocarbamate esters, metal dithiocarbamates, metal phosphorodithioates and phosphorodithioate esters. The organomolybdenum complex is a reaction product prepared by reacting 1 mole fatty oil, 1.0 to 2.5 moles diethanolamine and a molybdenum source.Lubricating compositions containing the synergistic compositions possess good antiwear properties and improved oxidation stability.

Abstract: Crankcase lubricant compositions for use in automobile or truck engines comprise a major amount of a lubricating oil, added copper present in oil-soluble form, at least 2 ppm of molybdenum present in oil-soluble form, and a total of from 0.05 to 2 mass % of one or more oil-soluble aromatic amines. The specified additives provide a highly effective antioxidant system.

Abstract: A lubricant composition is disclosed which comprises, a triglyceride oil lubricant and an oil soluble antimony compound as an antioxidant. Preferred antimony compounds are antimony dialkyldithiocarbamate and antimony dialkylphosphorodithioates.

Abstract: A grease composition for constant velocity joints comprising: (a) a base oil; (b) a diurea thickener of the formula (1):R.sup.1 NH--CO--NH--C.sub.6 H.sub.4 -p-CH.sub.2 --C.sub.6 H.sub.4 -p-NH--CO--NHR.sup.2wherein R.sup.1 and R.sup.2 may be the same or different and represent aryl groups having 6 or 7 carbon atoms or cyclohexyl groups; (c) a molybdenum dialkyldithiocarbamate; (d) molybdenum disulfide; (e) at least one extreme pressure agent selected from the group consisting of zinc dithiophosphates, and sulfur-nitrogen extreme pressure agents; and (f) a phosphorus-free sulfur extreme pressure agent. The grease composition has low coefficient of friction, good performance for reducing induced thrust and high durability.

Abstract: There is disclosed a lubricating oil for internal combustion engine which comprises:a mineral oil and/or a synthetic lubricating oil as a base oil, and oxymolybdenum dithiocarbamate sulfide expressed by the chemical formula (1): ##STR1## wherein R.sub.1 or R.sub.1 and R.sub.3 denote a branched aliphatic hydrocarbon group having not less than fourteen carbons, and R.sub.2 through R.sub.4 or R.sub.2 and R.sub.4 denote an aliphatic hydrocarbon group having not less than four carbons, in the amount of 0.005 to 0.2% by weight, when calculated as molybdenum (Mo).

Abstract: A lubricant composition is disclosed which comprises, a triglyceride oil lubricant and an oil soluble copper compound antioxidant. The oil soluble copper compounds are particularly effective antioxidants for triglycerides. The lubricant composition can include soluble zinc compounds which reduce wear and/or soluble antimony compounds which reduce wear and can function as adjuvant antioxidants reducing the amount of oil soluble copper required. Preferred zinc and antimony compounds are zinc dithiophosphate antiwear/antioxidant, and antimony dialkyldithiocarbamate antioxidant adjuvant.

Abstract: A lubricating composition of the present invention comprises a base oil for lubricating oil or base grease; at least one molybdenum compound as component (A) selected from the group consisting of a selected sulfurized oxymolybdenum dithiocarbamate, a selected sulfurized oxymolybdenum dithiophosphate and a selected molybdenum amine compound; and a (poly)glycerol ether and/or a (poly)oxyalkylene glycol monoalkyl ether as component (B).

Abstract: The invention relates to lube oil compositions containing a major amount of a lube oil and a minor amount of at least one compound containing a heterometallic tetranuclear preferably cubane, more preferably thiocubane core having 1 to 3 molybdenum atoms and the remainder Co, Cr, Cu, Ni, W, Mn, and Fe. Preferred is Cu. Thiocubane cores are also preferred and these typically have the formula M.sub.4-y Mo.sub.y S.sub.4 L.sub.n Q.sub.z, wherein y is 1 to 3, n is 2 to 6 and z is 0 to 4. Additive concentrates of the compounds as well as the method of making the compositions are disclosed.

Abstract: Multifunctional molybdenum compounds, which are the reactive product of molybdenum dithiocarbamates and metal dihydrocarbyl dithiophosphates, are new compositions which are useful as lubricant additives. They impart to the lubricant formulations to which they are added low friction and excellent wear properties at reduced phosphorous concentrations.

Abstract: A lubricating oil composition useful for internal combustion engines comprises a base oil, and, as combined therewith, specified amounts of a molybdenum dialkyl-dithiocarbamate, a selected zinc dihydrocarbyl dithiophosphate and a selected copper carboxylate, respectively. The oil composition exhibits a high friction-reducing effect when the oil is fresh and maintains the same effect even after the oil has been deteriorated.

Abstract: There is provided a composition having therein a base oil with a specified kinematic viscosity and with a specified total amount of aromatics, comprising, in specified amounts based on the total weight of the composition:(b) an alkaline earth metal salicylate detergent;(c) a zinc dialkyldithiophosphate;(d) a succinimide ashless dispersant containing a polybutenyl group having a specified number-average molecular weight;(e) a phenol ashless antioxidant;(f) a molybdenum dithiocarbamate friction modifier; and(g) a viscosity index improver in such an amount that the kinematic viscosity of said composition ranges from 5.6 to 12.5 mm.sup.2 /s at 100.degree. C. The present invention provides an engine oil which has excellent fuel consumption and maintains the fuel consumption for a long period of time.

Abstract: A method of improving the fuel economy characteristic of a lubricant by friction reduction including mixing the lubricant with a C.sub.2 to C.sub.12 aliphatic carboxylate salt of molybdenum and a zinc dialkyldithiophosphate or zinc dialkyldithiocarbamate is disclosed. The synergistic interaction of the aliphatic carboxylate salt of molybdenum and the zinc salt results in at least a 30% reduction in the coefficient of friction at 100.degree. C.

Abstract: A lubricant composition is disclosed which comprises, a triglyceride oil lubricant and an oil soluble copper compound antioxidant. The oil soluble copper compounds are particularly effective antioxidants for triglycerides. The lubricant composition can include soluble zinc compounds which reduce wear and/or soluble antimony compounds which reduce wear and can function as adjuvant antioxidants reducing the amount of oil soluble copper required. Preferred zinc and antimony compounds are zinc dithiophosphate antiwear/antioxidant, and antimony dialkyldithiocarbamate antioxidant adjuvant.

Abstract: Lubricant or lubricant concentrate on mineral oil and/or synthetic oil basis having improved lubricating properties, in particular improved load bearing, sliding and corrosion inhibiting properties, which containsa) one or more mineral oils and/or synthetic oils as base oil andb) at least one tetravalent to octavalent alcohol having at least one quaternary carbon atom as well as at least one ether bond in its molecule and having a density d.sub.20 of at least 0,900, and an enthalpy H of at least 350 kcal/kg,c) at least one asymmetric, organometallic compound,d) at least one phosphor containing substance,e) at least one sulfur containing substance andf) further usual additives.

Abstract: A metal working oil composition, comprising, as a component (A), 25 wt. % or more of one or more zinc dithiophosphates represented by the following general formula (1): ##STR1## wherein R.sup.1 to R.sup.4 represent a hydrocarbon group and, if necessary, as a component (B), 0.1 to 50 wt. % of a molybdenum compound.

Abstract: A lubricating oil composition comprising a lubricating base oil, an amine salt of molybdic acid, and a molybdenmn dithiocarbamate and/or a molybdenum dithiophosphate, wherein the content of molybdenum derived from the amine salt of molybdic acid is 200 ppm by weight or more, the content of molybdenum derived from the molybdenum dithiocarbamate and/or the molybdenum dithiophosphate is 200 to 700 ppm by weight, and the total content of molybdemum is 400 ppm by weight or more. The lubricating oil composition can maintain the effect to decrease friction in engines for a long time without being affected by nitrogen oxide gases.

Abstract: The present invention provides novel basic metallic salts of dithiocarbamic acid, in which the content of the basic ingredient (=a.times.3.times.100) is 30-100 mol %, represented by general formula (1): ##STR1## wherein R.sup.1 to R.sup.4, which may be the same or different, are each a lipophilic group having 1-30 carbon atoms, M is a metal atom selected from the group consisting of zinc, copper, nickel, iron, cadmium, silver, lead, antimony, tin, and bismuth, and "a" is a coefficient of 1/3 to 1/10,said basic metallic salts of dithiocarbamic acid containing no phosphorus atoms and imparting low-wear properties when used as an additive for lubricating oils. The present invention also provides lubricating oil compositions containing in a lubricating base oil said basic metal salt of dithiocarbamic acid, which compositions are excellent in wear-resistant properties and frictional characteristics and suitable as a lubricating oil for automotive internal combustion engines.

Abstract: A lubricating oil composition having a total base number of 2 to 13 and comprising (A) 0.04 to 0.12% by weight (in terms of phosphorus), based on the whole composition, of a zinc dialkyldithiophosphate, (B) 1.0 to 3.0% by weight of a calcium sulfonate (TBN 200 to 300) and 0.3 to 2.5% by weight of a calcium salicylate (TBN 10 to 100) and (C) 50 to 2,000 ppm (in terms of molybdenum) of sulfurized oxymolybdenum dithiocarbamate containing a hydrocarbyl group having 8 to 23 carbon atoms.

Abstract: Lubricant or lubricant concentrate on mineral oil and/or synthetic oil basis having improved lubricating properties, in particular improved load bearing, sliding and corrosion inhibiting properties, which containsa) one or more mineral oils and/or synthetic oils as base oil andb) at least one tetravalent to octavalent alcohol having at least one quaternary carbon atom as well as at least one ester bond in its molecule and having a density d.sub.20 of at least 0,900 and an enthalpy H of at least 350 kcal/kg,c) at least one asymmetric organometallic compound,d) at least one phosphor containing substance,e) at least one sulfur-containing substance andf) further usual additives.

Abstract: A lubricating oil composition containing from 0.01 to 0.8% by weight, based on the whole composition, of a phosphoric ester and/or a phosphorous ester, from 50 to 2,000 ppm (in terms of molybdenum) of sulfurized oxymolybdenum dithiocarbamate having at least one hydrocarbyl group having 8 to 18 carbon atoms and from 0.3 to 2.5% by weight of a calcium salicylate having a total base number of 10 to 100.

Abstract: A lubricating oil composition having improved fuel economy and fuel economy retention property which comprises a lubricating oil basestock, a boron containing alkenyl succinimide, molybdenum, di-thiocarbamate and/or molybdenum dithiophosphate, calcium and magnesium salicylate, and ethylene copolymer.

Abstract: A novel method is disclosed for preparation of bismuth dithiocarbamates by an exchange reaction between a bismuth carboxylate and a metal dithiocarbamate. The metal dithiocarbamate can be added to the reaction or prepared in situ by reacting a secondary amine and carbon disulfide in the presence of metal oxide, metal hydroxide or a tertiary amine.The reaction products are useful as extreme pressure additives when incorporated in lubricants.

Abstract: A process for producing molybdenum oxysulfide dithiocarbamate (MoDTC) by reacting [A] an aqueous solution or suspension prepared by reacting (a) a compound having hexavalent molybdenum, with (b) an alkali hydrogensulfide or an alkali sulfide, [B] a carbon disulfide, [C] a secondary amine and [D] a mineral acid, wherein [E] a reducing agent is added and reacted at any stage, and a lubricating oil composition containing the compound obtained according to said process. MoDTC can be efficiently produced in high yields by using a hexavalent molybdenum compound as a starting material, and the produced MoDTC has low corrosive action, excellent wear characteristics and excellent lubricating properties.

Abstract: The present invention is directed to providing a lubricating oil composition which contains an alkyl group asymmetric type molydbdenum dithiocarbamate (MoDTC) as an essential component thereof and which exhibits far more excellent lubrication performance than a conventional lubricating oil composition containing an alkyl group symmetric type MoDTC conventional used in the field of lubricating oils. The lubricating oil composition according to the present invention comprises a base oil for a lubricating oil consisting of a mineral oil and/or a synthetic oil and having a viscosity index of at least 115 and a viscosity at 100.degree. C. falling within the range of 2 to 50 cSt, and a specific alkyl group asymmetric type MoDTC as an essential component.

Abstract: A grease composition comprising 0.1 to 10 parts by weight of a powdered molybdenum oxysulfide dithiocarbamate composition which comprises a compound represented by the following formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independent hydrocarbyl groups and may be the same or different groups, and the total number of carbon atoms contained in R.sup.1 to R.sup.4 is 4 to 36; and wherein X is sulfur or oxygen and the composition of the total of all Xs is given as S.sub.m and O.sub.n in which m and n satisfy the ranges of 1.7.ltoreq.m.ltoreq.3.5 and 0.5.ltoreq.n.ltoreq.2.3, respectively, in which the constituent particles have diameters of not larger than 50 .mu.m, based on 100 parts by weight of a base grease.