Abstract: A lubricating oil composition comprising a base oil, (A) at least one compound selected from the group consisting of molybdenum dithiocarbamate and molybdenum dithiophosphate, and (B) an aromatic compound having at least one functional group selected from the group consisting of hydroxyl group, carboxyl group, mercapto group, and thiocarboxyl group on the aromatic ring. The lubricating oil composition maintains the low friction property to achieve sustained low fuel consumption during the use and also enables using the organic molybdenum compound added as the friction modifier in a smaller amount than the amount required in conventional lubricating oil compositions.

Abstract: Pre-blended combinations and reaction products of at least one metallic dithiocarbamate and at least one metallic dithiophosphate provide the synergism of antiwear properties with friction-reducing properties for lubricants and greases.

Abstract: A method of maintaining and servicing air conditioning systems and compositions therefor are provided whereby newer, more environmentally friendly R-134a refrigerant gas is substituted for the older R-12 and R-22 types. In addition, a method of flushing and internal lubrication of the system is presented, along with a new flush solvent and a new lubricant composition for use with an R-134a refrigerant gas.

Abstract: Crankcase lubricant compositions for use in automobile or truck engines comprise a major proportion of a lubricating oil, and an antioxidant system comprising added copper present in oil-soluble form and at least one oil-soluble phenothiazine.

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: The present invention provides a lubricating oil composition excellent in wear-resistant properties and frictional characteristics. The present invention relates to a lubricating oil composition containing a lubricating base oil(A) a complex obtained by reacting a metallic salt of dithiophosphoric acid having lipophilic groups, the average number of the carbon atoms of which is 4 or more, with a primary alkylamine having 8 or less carbon atoms, and(B) at least one kind of compound selected from the group consisting of oxymolybdenum sulfide dithiocarbamate, oxymolybdenum sulfide organophosphorodithioate, fatty esters, and organic amides.

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: 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: 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: 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: 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: 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.

Abstract: This invention relates to synergistic extreme pressure compositions comprising (1) an alkylenebis(dihydrocarbyldithiocarbamate) compound and (2) a bismuth compound selected from the group consisting of bismuth carboxylates, bismuth dihydrocarbyldithiocarbamates and bismuth dihydrocarbylphosphorodithioates.Lubricating compositions containing the synergistic compositions possess good extreme pressure properties.