Abstract: Diaryl amines are selectively alkylated by reaction with branched olefins, which olefins are capable of forming tertiary carbonium ions and can be conveniently prepared from readily available branched alcohols. The diaryl amine products are effective antioxidants and often comprise a high amount of di-alkylated diaryl amines and a low amount of tri- and tetra-alkylated diaryl amines.

Abstract: Provided is a lubricating oil composition containing a base oil (A) and an amine-based antioxidant (B), wherein the component (B) contains a phenyl-naphthylamine (B1), an alkylphenyl-naphthylamine (B2) and a di(alkylphenyl)amine (B3), the content of the component (B1) is 2.0 to 10.0% by mass relative to 100% by mass of the total amount of the component (B), the content of the component (B2) is 40.0 to 90.0% by mass relative to 100% by mass of the total amount of the component (B), and the content of the component (B3) is 8.0 to 50.0% by mass relative to 100% by mass of the total amount of the component (B). The lubricating oil composition maintains excellent oxidation stability even in long-term use in high-temperature environments, and has an excellent lifetime and is excellent also in a sludge preventing effect.

Abstract: The present invention relates to a lubricant composition, and more particularly to a lubricant composition, which has superior oxidation stability and friction characteristics even under harsh conditions of high temperature and high pressure and is thus suitable for use in hydraulic oil. The lubricant composition of the present invention includes a base oil, a liquid olefin copolymer, a phosphorothioate compound, and phosphonium phosphate.

Abstract: Para-alkylated substituted diphenylamines are made by catalytically alkylating diphenylamine with a branched-chain alkene, such as propene, oligomer mixture in which the oligomer present in the greatest percentage has 15-24 carbon atoms. The alkylated diphenylamines are useful crankcase lubricant additives such as for reducing piston deposits and engine sludge.

Abstract: Provided are lubricants containing a synthetic ester, one or more additional base stocks and an additive package along with methods of making and using the same. Lubricant compositions comprise a synthetic ester that is a reaction product of at least one hindered organic polyol with one or more carboxylic acid where at least some (20%) up to 100% of the acids are branched. The lubricant compositions can provide improved oxidation stability and extended service life, as compared to a lubricant whose ester component is the reaction product of one or more hindered organic polyols and one or more carboxylic acids that are all linear, in applications that involve exposure to air, moisture, and/or high temperatures. These lubricant compositions are suited to a variety of lubricant applications, including, but not limited to air compressors, gear boxes, bearing sets, hydraulic systems, and chain drives.

Abstract: The invention provides a lubricating composition comprising an oil of lubricating viscosity and an amine-functionalized additive, wherein the amine-functionalized additive is derived from an amine having at least 3 aromatic groups, at least one —NH2 functional group, and at least 2 secondary or tertiary amino groups. The invention further provides for the additive to have improved thermal and oxidative stability modifying properties. The lubricating composition may include circulating oils, turbine oils, hydraulic fluids, transformer oils and greases as well as others that require good oxidation stability and good rust inhibition properties.

Abstract: A lubricating oil composition for an air compressor according to the present invention contains a synthetic base oil, and one or more amine-based antioxidants selected from the group consisting of asymmetric diphenylamine-based compounds, phenylnaphthylamine-based compounds, asymmetric dinaphthylamine-based compounds, dialkyl monophenylamine-based compounds and dialkyl mononaphthylamine-based compounds.

Abstract: A gear oil composition, a method for operating an automotive gear, and a method for improving performance of a gear oil that includes a) a major amount of a base oil having a lubricating viscosity; b) a polysulfide extreme pressure agent; and c) a reaction product of an acylated copolymer and a polyamine.

Abstract: The present invention relates to lubricating compositions and particularly gear oil compositions that include a minimum level of a specific antioxidant component, where the antioxidant component includes (i) a phenolic antioxidant, (ii) an aminic antioxidant, or (iii) a combination thereof, where the antioxidant component is present in the lubricating composition at from 1.0 percent by weight or higher. Such compositions provide surprisingly good seal compatibility.

Abstract: The present invention relates to a process for preparing nonylated diphenylamines which improves nonene usage by recycling and reusing stripped nonene from an earlier process. The process comprising consecutive recycle of recovered nonene is conducted at a sequential two step temperature reaction, namely a more severe temperature followed by a lower temperature. The product prepared by this process is a useful antioxidant for lubricating oil compositions.

Abstract: A lubricant composition, comprising an oil of lubricating viscosity, a dispersant comprising the condensation product of a carboxylic-functionalized polymer with an aromatic moiety through an amide, imide, or ester linkage, and an oil-soluble titanium compound, exhibits good oxidative stability.

Abstract: The lubricating oil used to lubricate diesel engines is stabilized against the detrimental degradation effects of biodiesel fuel by the addition to the lubricating oil of an additive concentrate comprising a premix of a first antioxidant, a second antioxidant of a type different from the first and an organometallic compound.

Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines, particularly heavy duty diesel engines, equipped with EGR systems, particularly EGR systems operating in a condensing mode, can be ameliorated by addition of a phenylenediamine compound.

Abstract: The present invention provides a lubricating oil composition capable of achieving a lubricating property, a thermal stability, an oxidation stability, an anti-discoloring property and an anti-varnishing performance with a higher level by compounding a phosphorus compound having a specific structure in a base oil, as well as a lubricating oil composition for internal combustion engines which is excellent in wear resistance, high-temperature detergency and base number retention property although it has a low phosphorus content, a low sulfur content and a low sulfated ash content.

Abstract: The invention provides a grease composition having (A) a lithium soap thickener, (B) as a base oil an ester type synthetic oil obtainable from an esterification reaction of trimethylolpropane with a fatty acid, and (C) (c-1) a 1-naphthylamine type antioxidant and (c-2) a diphenylamine type antioxidant, wherein the contents of (c-1) and (c-2) are 1.0 to 10 mass % in total, based on the total mass of the composition, and the ratio by mass of (c-1) to (c-2) is in the range from 30:70 to 70:30.

Abstract: The lubricating oil composition of the present invention comprises at least one species of aromatic constituent selected from the following (a1) to (a5): (a1) a lubricating base oil comprising a polycyclic aromatic content of 0.01% by mass or more based on the total amount of base oil (a2) a lubricating base oil comprising a total aromatic content of 20 to 100% by mass based on the total amount of base oil (a3) an aromatic solvent (a4) at least one species of polycyclic aromatic compound selected from alkyl naphthalene and compounds having three or more aromatic rings, and (a5) an aromatic compound having a nitrogen atom, an oxygen atom or a sulfur atom; and an organic molybdenum compound.

Abstract: A process for producing a high viscosity functionalized metallocene polyalphaolefin (mPAO) fluid. The process includes providing a mPAO having a terminal double bond, said mPAO produced by the metallocene-catalyzed oligomerization or polymerization of an alpha-olefin feed; providing at least one of a substituted or unsubstituted alkyl thiol, aryl thiol, diphenylamine or naphthalene; and reacting, optionally in the presence of a catalyst or initiator, the mPAO having a terminal double bond with at least one of the substituted or unsubstituted alkyl thiol, aryl thiol, diphenylamine or naphthalene, under reaction conditions sufficient to produce the functionalized high viscosity mPAO fluid. The functionalized mPAO fluid has, as synthesized, a viscosity (Kv100) from 135 to 900 cSt at 100° C.; a viscosity index (VI) greater than 150; a pour point (PP) less than ?25° C.; a molecular weight distribution (Mw/Mn) less than 2.0; a residual unsaturation (Bromine Number) less than 2.

Abstract: This invention provides a composition of insulating fluid and process for the preparation thereof that mainly contains alkyl benzenes. In addition to alkyl benzenes, the composition also contains an antioxidant, an antifoaming agent, a pour point dispersant, a corrosion inhibitor and a detergent-dispersant additive. The product of this invention has utility as an insulating fluid in electrical installations such as transformer.

Abstract: Disclosed is a lubricating oil composition containing an oil of lubricating viscosity and a N,N,N?,N?-tetraalkyl-naphthalene-1,8-diamine and at least one additive selected from antioxidants, dispersants, and detergents which together provide superior oxidation inhibition and are suitable lubricants for automotive and truck crankcase lubricants; as well as transmission lubricants, gear lubricants, hydraulic fluids, compressor oils, diesel and marine lubricants.

Abstract: A method and composition for reducing drag, reducing friction, reducing viscosity, and/or improving flow of viscous hydrocarbons including adding an effective amount of a drag-reducing composition containing a blend of turpentine liquids to a viscous hydrocarbon storage or pipeline operation and forming a drag-reducing mixture of viscous hydrocarbons and the blend of turpentine liquids.

Abstract: The lubricating oil composition of the present invention comprises at least one species of aromatic constituent selected from the following (a1) to (a5): (a1) a lubricating base oil comprising a polycyclic aromatic content of 0.01% by mass or more based on the total amount of base oil (a2) a lubricating base oil comprising a total aromatic content of 20 to 100% by mass based on the total amount of base oil (a3) an aromatic solvent (a4) at least one species of polycyclic aromatic compound selected from alkyl naphthalene and compounds having three or more aromatic rings, and (a5) an aromatic compound having a nitrogen atom, an oxygen atom or a sulfur atom; and an organic molybdenum compound.

Abstract: A lubricating oil composition used in an internal combustion engine contains lubricating base oil; a disulfide compound as a component (A), a no-boron-containing ashless dispersant as a component (B), and a boron-containing ashless dispersant as a component (C). The disulfide compound as the component (A) is represented by the following formula (1) and/or the following formula (2). The no-boron-containing ashless dispersant as the component (B) has in its side chain: an alkyl group having a number average molecular weight of 500 to 3,000; or an alkenyl group having a number average molecular weight of 500 to 3,000. The boron-containing ashless dispersant as the component (C) has in its side chain: an alkyl group having a number average molecular weight of 500 to 4,000; or an alkenyl group having a number average molecular weight of 500 to 4,000.

Abstract: A Group IV/Group V lubricating composition providing improved antioxidation performance comprises from 5 wt. % to 40 wt. % of a Group V base oil component, such as alkylated naphthalene, at least 30 wt. % of a Group IV base oil component, such as one or more polyalphaolefin base stocks, and from 0.25 wt. % to 1.5 wt. % of a trithiophosphate-containing compound. The trithiophosphate-containing compound is preferably C30H57O7PS3. The lubricating composition includes not greater than 5 wt. % of a Group I, Group II, or Group III base oil component, and, preferably not greater than 10 ppm heavy metal component. The lubricating composition preferably has a kinematic viscosity of from 20 cSt to 1,000 cSt at 40° C. and a viscosity index (VI) of from 130 to 200.

Abstract: A composition of biodegradable gear oil that mainly contains modified nontauedible vegetable oils. Mono-esters are hydrogenated, epoxidized or aryl alkylated or mixture thereof, and C7 to C12 primary alcohol. In addition to chemically modified non-edible vegetable oils, the composition also contains an additive pack, which comprises at least one: antioxidant, an extreme pressure additive, an anti foaming agent, a pour point depressant, a corrosion inhibitor and a detergent-dispersant additive. The product of this invention has utility as industrial and automotive gear oil GL 4 grade. The compositions are significantly biodegradable, eco-friendly, reduce use of petroleum, have lower cost than synthetic oil, are miscible in mineral & synthetic fluids and safe to use due to higher flash point.

Abstract: Disclosed are compositions of a major amount of alkylated aromatics compounds, in particular alkylated naphthalene and alkylated benzene, optionally combined with API Group II, Group III, Group IV and/or ethylene copolymers, showing improved thermo-oxidation performance when containing an additive combination including an alkylated or non-alkylated diarylamine and a sulfur-containing metal passivator. Particularly, the lubricating compositions include at least 55 wt % of a base oil selected from the group consisting of alkylated naphthalene, alkylated benzene and combinations thereof, and from 0 wt % to 45 wt % of another base oil component. The ratio of amine component to sulfur component in the additive combination is from 1:1 to 20:1. The compositions contain an amount of base oil other than alkylated naphthalene, alkylated benzene and API Group II, Group III, Group IV and/or ethylene copolymers of less than 10 wt % based on the total weight of the components comprising the lubricating composition.

Abstract: The invention provides a lubricating composition comprising an oil of lubricating viscosity and an amine-functionalised additive, wherein the amine-functionalised additive is derived from an amine having at least 3 aromatic groups, at least one —NH2 functional group, and at least 2 secondary or tertiary amino groups. The invention further provides for the additive to have improved thermal and oxidative stability modifying properties. The lubricating composition may include circulating oils, turbine oils, hydraulic fluids, transformer oils and greases as well as others that require good oxidation stability and good rust inhibition properties.

Abstract: The use of an additive including a mixture of oligomers that is produced from the reaction of aromatic amines chosen from: (i) the reaction with one another of diphenylamine (DPA) compounds of formula (I) below: wherein the groups R1 and R2 stand for, independently of one another, a hydrogen or a linear or branched alkyl group having from 1 to 30 carbon atoms, advantageously from 4 to 12 carbon atoms, (ii) the reaction with one another of phenyl-?-naphthylamine (PAN) compounds of formula (II) below: wherein the group R3 stands for a hydrogen or a linear or branched alkyl group having from 1 to 30 carbon atoms, advantageously from 4 to 12 carbon atoms, and (iii) the reaction of a (DPA) compound of formula (I) above with a (PAN) compound of formula (II) above as an agent for the stabilization of a lubricating composition for a conveyor chain subjected to a temperature of at least 120° C.

Abstract: Provided is an antioxidant composition, including: a compound (A) represented by the following general formula (1); and an amine-based antioxidant (B) and/or a phenol-based antioxidant (C) other than the compound (A): (wherein R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n represents a number from 1 to 3.

Abstract: A turbo-charged, sump-lubricated internal combustion engine which is susceptible to contamination of lubricant with liquid fuel, is lubricated with a lubricant which contains an amount of an aminic antioxidant, optionally in the absence of a phenolic antioxidant, thereby reducing the deterioration of said lubricant and formation of turbo sludge.

Abstract: The invention provides a lubricating composition containing a compound comprising the reaction product of a polyolefin, an ethylenically unsaturated aromatic acylating agent (or carboxylic reactant), and an amine, and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine.

Abstract: The resistance to oxidation and nitration of a gas engine oil is improved by the use of a combination of a hindered phenolic antioxidant and an (alkylated) phenyl-?-naphthylamine antioxidant. The additional use of an organo molybdenum compound further enhances the resistance to oxidation and nitration.

Abstract: A low sulfated ash, tow sulfur, low phosphorus, low zinc lubricating, oil composition preferably employable for internal combustion engines using a low sulfur hydrocarbon fuel comprises a base oil having a saturated component of 85 wt. % or more, a viscosity index of 110 or more, and a sulfur content of 0.01 wt. % or less; an alkaline earth metal-containing detergent; a nitrogen-containing ashless dispersant of a weight average molecular weight of 4,500 or more; a phenolic or amine oxidation inhibitor; and a basic nitrogen-containing compound-oxymolybdenum complex.

Abstract: The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % CA of not more than 2, % CP/% CN of not less than 6 and an iodine value of not more than 2.5.

Abstract: Aniline compounds useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such aniline compounds.

Abstract: The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % CA of not more than 2, % CP/% CN of not less than 6 and an iodine value of not more than 2.5.

Abstract: Aniline compounds useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such aniline compounds.

Abstract: A method in which an improved lubricating composition containing ionic liquids is used to enable operation of chains, steel belts, wheel bearings, roller bearings, sliding bearings and electric motors for at least 48 hours by reducing the evaporation loss and the lackification tendency of the lubricant due to the lubricant being protected against thermal and oxidative attack.

Abstract: The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % CA of not more than 2, % CP/% CN of not less than 6 and an iodine value of not more than 2.5.

Abstract: A lubricant composition that is particularly suited for use in steam and gas turbine oils and in circulating oils has a balance of excellent oxidative stability and reduced sludge formation and comprises a blended mixture of alkylated phenyl-?-naphthylamine and at least oil soluble triazole or triazole derivative in an oil of lubricating viscosity, such compositions being capable of a residual RPVOT of 25% after at least 500 hours test duration test duration 120° C. in Dry TOST test or, alternatively 50% after 700 hours or 25% after 1000 hours.

Abstract: There is provided a lubricating composition having a major amount of a lubricating oil having less than about 40% by weight alkylcycloparaffins and a minor amount of at least one diarylamine, and processes for making and using thereof.

Abstract: The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % CA of not more than 2, % CP/% CN of not less than 6 and an iodine value of not more than 2.5.

Abstract: The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % CA of not more than 2, % CP/% CN of not less than 6 and an iodine value of not more than 2.5.

Abstract: The invention provides an oil of lubricating viscosity, a dispersant and an amine-functionalised additive, wherein the amine-functionalised additive is derived from an amine having at least 3 or 4 aromatic groups. The invention further relates to the use of the lubricating composition in an internal combustion engine.

Abstract: The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % CA of not more than 2, % CP/% CN of not less than 6 and an iodine value of not more than 2.5.

Abstract: The invention relates to antioxidant compositions for lubricants and organic polymers comprising a first antioxidant comprising a reaction product of p-cresol, dicyclopentadiene and isobutylene; and a second antioxidant comprising a diarylamine. The first antioxidant preferably has the structure: wherein n is 0-50, and R1 and R2 are independently hydrogen, a straight or branched C1-C30 alkyl or alkylene group optionally substituted with one or more substituents, C3-C12 cycloalkyl, C5-C12 aryl, or C6-C12 alkylaryl. The second antioxidant preferably has the formula: (R3)a—Ar1—NH—Ar2—(R4)b wherein Ar1 and Ar2 are independently aromatic hydrocarbon groups and R3 and R4 are independently hydrogen or hydrocarbyl groups having from 6 to about 100 carbon atoms and a and b are independently 0 to 3 but (a+b) is not greater than 4.

Abstract: This invention relates to lubricating oil additives, and to lubricating oil compositions, their method of preparation, and use. More specifically, this invention relates to several novel lubricating oil additives and compositions which contain a tungsten compound and an antioxidant, namely aminic antioxidants such as a secondary diarylamine or an alkylated phenothiazine. The use of the tungsten compound with the secondary diarylamine and/or the alkylated phenothiazine provides improved oxidation and deposit control to lubricating oil compositions. The lubricating oil compositions of this invention are particularly useful as crankcase and transmission lubricants, gear oils and other high performance lubricant applications.

Abstract: A low SAPS lubricating oil composition exhibiting excellent piston cleanliness having up to 0.3 wt. % sulfur, up to 0.08 wt. % phosphorus, and a sulfated ash content up to 0.80 wt. % comprising an overbased alkali metal or alkaline earth metal alkyl salicylate detergent having a low soap content.

Abstract: This invention relates to lubricating oil additives, and to lubricating oil compositions, their method of preparation, and use. More specifically, this invention relates to several novel lubricating oil additives and compositions which contain a tungsten compound and an antioxidant, namely aminic antioxidants such as a secondary diarylamine or an alkylated phenothiazine. The use of the tungsten compound with the secondary diarylamine and/or the alkylated phenothiazine provides improved oxidation and deposit control to lubricating oil compositions. The lubricating oil compositions of this invention are particularly useful as crankcase and transmission lubricants, gear oils and other high performance lubricant applications.

Abstract: The invention relates to a composition comprising a mixture of alkylated N-?-naphthyl-Nphenylamine (PANA) and alkylated diphenylamine (DPA), the product obtainable by alkylating PANA or a mixture of PANA and DPA with alkenes and the process for alkylating PANA or a mixture of PANA and DPA with alkenes. The compositions according to the present invention have an outstanding anti-oxidative action, which can be demonstrated by established test methods.

Abstract: Diaromatic amine compounds or an isomer or isomeric mixture thereof is provided having the general formula: wherein n, m, R, R1, R2, R3, R4 and R5 are as defined herein are provided. Lubricating oil compositions and stabilizer-containing compositions containing the diaromatic amine compounds are also provided.