ГРАДИЕНТНЫЙ СОПОЛИМЕР, ЕГО ПОЛУЧЕНИЕ И ЕГО ПРИМЕНЕНИЕ

Изобретение относится к полимерной смеси, подходящей для использования в депрессорной присадке для смазочных масел, к ее получению и применению. Полимерная смесь, приемлемая для использования в депрессорной присадке для смазочных масел, состоит из n компонентов полимера или содержит их, причем каждый из этих n компонентов полимера независимо представляет собой аддитивные полимеры из мономера формулы (I) и/или их смесь, или n компонентов полимера, каждый, независимо состоят, по существу, из одной или нескольких структурных единиц, представленных формулой (I-1), или содержат их. Символ n представляет собой целое число в замкнутом интервале [5, 50]. В формуле (I) или формуле (I-1) определение каждой группы и численного значения приведено в описании. Когда среднее количество атомов углерода в боковой цепи i-го компонента полимера, как определено согласно методу ядерного магнитного резонанса, выражается как Xi, где символ i представляет собой произвольное целое число от 1 до n, имеет место соотношение ...

УГЛЕВОДОРОДНАЯ КОМПОЗИЦИЯ

Углеводородные композиции содержат парафиновую масляную фракцию и 0,1 - 10000 мг на 1 кг масляной фракции полимерной присадки. В качестве присадки содержится смесь 1 - 90 мас.% в расчете на присадку линейного полимера монооксида углерода с одним или более олефинами, имеющими не менее 10 атомов углерода в молекуле, в котором чередуются элементарные звенья монооксида углерода и олефинов, с полимером по крайней мере одного н-алкилакрилата или смеси н-алкилметакрилатов, имеющих 8 - 30 атомов углерода в алкиле. 3 з.п. ф-лы, 2 табл.

СМАЗОЧНАЯ КОМПОЗИЦИЯ ДЛЯ ДВИГАТЕЛЕЙ ВНУТРЕННЕГО СГОРАНИЯ

Сущность изобретения: смазочная композиция содержит продукт переэтерификации низшего диалкилкарбоната со смесью (C10-C18) оксоспиртов, представляющих собой фракцию спиртов с разветвленной углеводородной цепью, полученных гидроформилированием линейных или преимущественно линейных олефинов со статистической внутренней или концевой двойной связью в присутствии кобальтового или радиевого катализатора с последующим отделением фракции оксоспиртов с разветвленной углеводородной цепью от фракции оксоспиртов с линейной углеводородной цепью фракционной кристраллизацией в присутствии углеводородного или эфирного растворителя, в количестве 5 - 50 мас. % , функциональные присадки - 6 - 12 мас. % , вязкостную и депрессорную присадки 5 - 5 мас. % и синтетическое масло или его смесь с минеральным маслом до 100 мас. % . 1 с. и 5 з. п. ф-лы, 2 табл.

СМАЗОЧНОЕ МАСЛО И ЕГО ИСПОЛЬЗОВАНИЕ

... 1. Смазочное масло, которое основано на масле турнепса или рапса и является маслом для ломтерезки или тестоделительной машины, смазочным маслом для форм и противней или маслом для промывания противней для пищевой промышленности, отличающееся тем, что оно содержит, по меньшей мере, масло турнепса или рапса в качестве основного компонента, вспомогательное смазочное средство, которое выбрано из следующих агентов: белого масла фармацевтической чистоты, метилового эфира (RME), этилового эфира (REE) или пропилового эфира (RPE) масла турнепса или рапса, эмульгатора, который выбран из следующих агентов: лецитина, эфиров уксусной кислоты, образованных моно- и диглицеридами жирных кислот, эфиров сахарозы и жирных кислот, антиоксиданта, который является добавленным синтетическим токоферолом. 2. Смазочное масло по п.1, отличающееся тем, что эмульгатором является гидролизованный лецитин. 3. Смазочное масло по п.1 или 2, отличающееся тем, что вспомогательным смазочным средством является белое масло фармацевтической ...

СМАЗЫВАЮЩАЯ КОМПОЗИЦИЯ

... 1. Смазывающая композиция для применения в картере двигателя, включающая базовое масло и одну или несколько присадок, где базовое масло представляет собой базовое масло, полученное в синтезе Фишера-Тропша, причем смазывающая композиция содержит один или несколько гребнеобразных полимеров.2. Смазывающая композиция по п. 1, в которой гребнеобразный полимер содержит в основной цепи по меньшей мере одно повторяющееся звено, полученное из по меньшей мере одного макромономера на основе полиолефина, и по меньшей мере одно повторяющееся звено, полученное из по меньшей мере одного низкомолекулярного мономера, выбранного из группы, состоящей из стироловых мономеров, имеющих от 8 до 17 атомов углерода, алкил(мет)акрилатов, имеющих от 1 до 10 атомов углерода в спиртовой группе, сложных виниловых эфиров, имеющих от 1 до 11 атомов углерода в ацильной группе, простых виниловых эфиров, имеющих от 1 до 10 атомов углерода в спиртовой группе, (ди)алкилфумаратов, имеющих от 1 до 10 атомов углерода в спиртовой ...

ДИСПЕРГАТОРЫ НА ОСНОВЕ ПРОИЗВОДНЫХ ПОЛИОЛЕФИНА

Motor vehicle engine oil contg. alkyl-phenol alkoxylate - with better stability, giving cleaner piston and raising engine efficiency

An engine oil contains and, as base component, up to 10 wt.% of an alkylphenol alkoxylate of formula R1 - (O -(R2 - O)nH)m. R1 = residue of an alkylphenol with 1-2 alkyl gps. with 6-24C, or of a bisphenol; R2 = residue of butylene oxide, opt. mixed with propylene oxide: n = 5-100; m = 1 or 2.

Flammfestes Hydrauliköl

Verwendung von wasserfreien Trenn- und Schmiermitteln zur Behandlung der Wände einer Pressform zum Formen und Wierderformen

METALLBEARBEITUNGSOEL-ZUSAMMENSETZUNG

Lubricant composition, e.g. useful for making self-lubricating bearing or roller parts, comprises a polyurethane and a lubricant

The invention relates to a lubricant composition containing a polyurethane and a lubricant, wherein different lubricating greases and oils can be used as lubricant. The lubricant composition can be easily applied on the place to be lubricated by pouring or processed into shaped parts. The lubricant composition is characterized by excellent, long-lasting self-lubricating properties and high temperature resistance.

Oleaginous compositions particularly suitable for use as hydraulic fluids and/or insulating oils

A substantially non-inflammable oleaginous composition, suitable for use as a hydraulic fluid or insulating oil, comprises a normally liquid completely halogenated carbon compound, together with a polymerized unsaturated ester, the latter being present in a proportion of 2-15 per cent based on the halogenated carbon compound. Suitable completely halogenated carbon compounds are hexachlorobutadiene, hexachloropropylene, hexabromopropylene and tetraiodoethylene, while preferred polymerized unsaturated esters are polymerized esters of methacrylic acid. Optional ingredients which may be present in the oleaginous composition are mineral oil, oxidation inhibitors, corrosion inhibitors, viscosity index improvers, pour-point depressants, wax suppressors, extreme pressure agents and partially halogenated organic compounds. Oxidation inhibitors mentioned are aromatic amines and substituted phenols, particularly dimethyl phenols, 2,6 - di - tert. - butyl phenols, 2,4 - dimethyl - 6 - octyl phenol, ...

METAL-WORKING COMPOSITIONS

Improvements in or relating to lubricating compositions

... 759,284. Hydraulic fluids. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. Jan. 4, 1954 [Jan. 5, 1953], No. 186/54. Class 69 (2). [Also in Group III] An hydraulic fluid comprises a major proportion of an oleaginous liquid ester and minor proportions of an epoxy compound and of an aryl amine containing a plurality of amino-aryl linkages. The epoxy compounds may contain one or more epoxy groups, and may be polymers containing epoxy groups. The arylamines may be diamino diarylalkanes, thiodiarylamines, diarylamines or alkylated phenylene diamines. The oleaginous liquid ester may be an ester of an acid of phosphorus, such as phosphates, phosphonates, phosphinates, diphosphorus compounds and ethers of diphosphorus compounds; an ester of silicic acid; or an ester of a carboxylic acid, such as an ester of mono or polyhydric alcohol with a mono or polybasic acid; or an ester of a silicic, phosphorus or dicarboxylic acid with thia-alcohols or thio-alcohols. Many examples of the epoxy ...

METAL ROLLING OILS

METAL-WORKING OIL COMPOSITION

ELECTRORHEOLOGICAL FLUID

VERWENDOUNG FROM WATER-FREE SEPARATION AND LUBRICANTS TO THE TREATMENT OF THE WALLS OF A PRESS FORM FOR FORMING AND WIERDERFORMEN

PROCEDURE FOR THE PRODUCTION OF A COMPOSITION OF CELEBRATIONS A LUBRICANT

POWDER METALLURGY COMPOSITION WITH LUBRICANT, PRODUCTION PROCESS OF THE COMPOSITION AND PROCEDURE FOR THE PRODUCTION OF A METAL PART OF THIS COMPOSITION

PROCEDURE FOR THE LUBRICATION OF LINES FOR CEMENT GROUTS

LUBRICANT COMPOSITION FOR TRANSMISSIONS

POLYGLYCOLSCHMIERMITTEL FOR COOLING COMPRESSORS AND PROCEDURES FOR YOUR PRODUCTION.

PROCEDURE FOR the PRODUCTION OF ADDUCTS OF 1,2BUTYLENOXID TO ALCOHOLS.

ENGINE OIL WITH A CONTENT PHENOLALKOXYLATEN ON.

LUBRICATING OIL FOR COOLING SYSTEMS OF THE TYPE OF COMPRESSION

Multi-range transmission oil

THE USE OF COMPOSITIONS ON BASIS OF CYCLODEXTRIN AND FAT MATERIAL AS AQUEOUS ONE METALWORKING LIQUIDS

High temperature oil

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.

Lubricant compositions

A lubricant composition characterized by the Society of Automotive Engineers ("SAE") as 75W-140 capable of meeting the American Petroleum Institute's ("API") GL-5 performance classification requirements for use in association with a device involving metal to metal contact of moving parts comprising: (a) base-stock comprising (i) at least one relatively low viscosity polyalphaolefin, and (ii) at least one diester; (b) viscosity improver comprising (i) at least one relatively high viscosity polyalphaolefin, and (ii) polyisobutylene; and (c) a performance additive comprising at least one additive effective to improve at least one property of the lubricant and/or the performance of the equipment in which the lubricant is to be used.

POWDER METALLURGY LUBRICANTS, COMPOSITIONS, AND METHODS FOR USING THE SAME

Hydrophilic coatings and methods of forming the same

Hydrophilic coatings including a base coat layer and a top coat layer wherein at least one of the base coat and top coat compositions that form the hydrophilic coatings comprises a diacrylate compound have a number average molecular weight less than 1000.

Threaded tubular component and method for coating such a threaded tubular component

The subject matter of the invention is a tubular element intended for drilling and/or operating hydrocarbon wells having one end (1; 2) comprising at least one threaded area (3; 4), characterised in that the end (1; 2) is at least partially coated with a dry film (12), comprising a matrix (13) including a mixture of at least one alkali polysilicate and at least one semi-crystalline thermoplastic organic polymer. The invention also relates to a method for producing a dry film (12), comprising a matrix (13) including a mixture of at least one alkali polysilicate and at least one semi-crystalline thermoplastic organic polymer, on such a tubular element intended for drilling and/or operating hydrocarbon wells.

Composition for minimum quantity lubrication, and use of same

The invention relates to a lubricant composition and to the use of same for minimum quantity lubrication in the field of metalworking. The composition comprises 0.05 to 5 wt.% of emulsifier in relation to the total weight of the composition, and an amount of an aliphatic C ...

Additive for lubricating oil

Pour point depressants for high monounsaturated vegetable oils and for high monounsaturated vegetable oils/biodegradable base and fluid mixtures

OIL ADDITIVE

The present disclosure relates to the use of a C12-20 polyalkyl methacrylate polymer as a lubricating oil additive such that the C12-20 polyalkyl methacrylate polymer accounts for 0.1 to 0.3 % by weight of the finished lubricating oil. The use comprises the addition of said C12-20 polyalkyl methacrylate polymer to a lubricating oil based on mineral oil to improve the filtration of said lubricating oil based on mineral oil. Further, the present disclosure relates to finished lubricating oils resulting from such a use and methods of lubricating the metal surface of a gear or axle comprising applying to the metal surface such a finished lubricating oil.

PERFLUOROPOLYETHER ADDITIVES

Compounds formed of (per)fluoropolyether chains and end groups having a pyridine structure, with structural formula: T1-CW1-O-R f-CW2-T2(I) wherein T1, T2, equal to or different from each other, have the following meanings: - F, CF3, C2F5, (C2F4)C1: - CH2-B-Y, CH (CF3) O-Y, wherein: - B = O, S; (see above formula) wherein R1, R2, R3, R4, equal to or different from each other, are H, F, C1-C8 linear or branched perfluoroalkyl, NO2, CN; with the proviso that at least one of the two end groups T1, T2 is CH2-B-Y or CH(CF3)O-Y as above defined; W1, W2, equal to or different from each other, are -F, -CF3; Rf is a (per)fluoropolyoxyalkylene chain having a number average molecular weight from 400 to 10,000.

LUBRICATING OIL COMPOSITIONS WITH IMPROVED FRICTION PROPERTIES

The present invention concerns friction reducers for use in lubricating oil compositions which comprise certain groups of aromatic compounds, esters, narrow mixtures of base stocks, and/or amorphous polymers such as amorphous olefin copolymers. These compositions can provide substantial reductions in the coefficient of friction and fuel economy improving benefits when admixed to lubricating oils without deleterious effects such as instability, undesirable high viscosities and deposits. In one aspect of the invention, pentaerythritol esters and optionally triol esters are added to lubricating oil compositions to provide reduced friction and improved fuel economy. In a second aspect of the invention, similar results are obtained by adding hydrocarbyl aromatics to a lubricating oil composition containing one or more of Groups II and III base stock. In a third aspect, the invention concerns a lubricating oil composition comprising an amorphous olefin copolymer and one or more of Groups II and ...

(PER)FLUOROPOLYETHER ADDITIVES

Compounds usable as stabilizing additives of perfluoropolyether fluids working at high temperatures, higher than 200.degree.C, and/or in the presence of metals and/or in the presence of Lewis acids, are formed of (per)fluoropolyether chains and of end groups having a heteroaromatic structure, according to the following general formula: T1-CFW1-O-R f-CFW2-T2 (I) wherein - T1, T2, equal to or different from each other, have the following meanings: - F, CF3, C2F5, (C2F4)Cl - -CH2-B-Y, -CH(CF3)O-Y, wherein: - B = O, S; - Y is a substituent formed of a ring having a heterocyclic structure having the following formula: (see above formula) wherein: R1, R2, R3, R4, equal to or different from each other are H, linear or branched C1-C8 perfluoroalkyl, NO2, CN, preferably H; with the proviso that at least one of the two end groups T1, T2 is -CH2-B-Y or -CH(CF3)O-Y, wherein B and Y are as above; - W1, W2, equal to or different from each other, are -F, -CF3; Rf is a (per)fluoropolyoxyalkylene chain ...

NOVEL HYPERBRANCHED POLYESTERS AND THEIR USE AS WAX INHIBITOR, AS POUR POINT DEPRESSANT, AS LUBRICANT OR IN LUBRICATING OILS

The invention relates to a method for the preparation of a hyperbranched polyester mixture obtainable by reacting a hydroxyl group containing carboxylic acid (B) with at least one carboxylic acid group and at least two hydroxyl groups with a diol (C) having a molecular weight of more than 100 g/mol, optionally in the presence of at least one further reactant, wherein the at least one further reactant is a polyol (A) having at least three hydroxyl groups under a reaction condition allowing ester and ether formation; and reacting the mixture resulting from step (a) with a hydrophobic carboxylic acid (D) resulting in the hyperbranched polyester mixture. The invention further relates to said hyperbranched polyester mixture and the use as wax inhibitor, as pour point depressant, as lubricant or in lubricating oils.

FUNCTIONAL POLYALKYL (METH)ACRYLATES WITH ENHANCED DEMULSIBILITY PERFORMANCE

The present invention is directed to new polyalkyl(meth)acrylate (PAMA) polymers comprising a certain amount of hydroxyl-functionalized alkyl (meth)acrylates, lubricating oil compositions comprising these polymers and their use for improving the demulsibility performance of high VI lubricating oil compositions which are based on apolar base oils, especially hydraulic fluid compositions.

DISPERSANTS, METHOD OF MAKING, AND USING SAME

Disclosed is a dispersant composition, suitable for use in lubricating oils. The dispersant composition is a reaction product of (i) a polyalkenyl succinimide post-treated with a post-treating agent selected from the group consisting of an organic carbonate, an epoxide, a lactone, a hydroxyaliphatic carboxylic acid, and combinations thereof; and (ii) an acylating agent.

LUBRICATING OIL COMPOSITIONS WITH IMPROVED FRICTION PROPERTIES

The present invention concerns friction reducers for use in lubricating oil compositions which comprise certain groups of aromatic compounds, esters, narrow mixtures of base stocks, and/or amorphous polymers such as amorphous olefin copolymers. These compositions can provide substantial reductions in the coefficient of friction and fuel economy improving benefits when admixed to lubricating oils without deleterious effects such as instability, undesirable high viscosities and deposits. In one aspect of the invention, pentaerythritol esters and optionally triol esters are added to lubricating oil compositions to provide reduced friction and improved fuel economy. In a second aspect of the invention, similar results are obtained by adding hydrocarbyl aromatics to a lubricating oil composition containing one or more of Groups II and III base stock. In a third aspect, the invention concerns a lubricating oil composition comprising an amorphous olefin copolymer and one or more of Groups II and ...

A FUNCTIONAL FLUID AND THE USE THEREOF

The present invention concerns a functional fluid comprising A) 1 to 99 % by weight based on the total weight of the functional fluid of alkyl(meth)acrylate polymers obtainable by polymerizing a mixture of olefinically unsaturated monomers, which consists of a) 1-100 wt% based on the total weight of the ethylenically unsaturated monomers of one or more ethylenically unsaturated ester compounds of formula (I) where R is hydrogen or methyl, R1 means a linear or branched alkyl residue with 1-6 carbon atoms, R2 and R3 independently represent hydrogen or a group of the formula -COOR', where R' means hydrogen or a alkyl group with 1-6 carbon atoms, b) 0-99 wt% based on the total weight of the ethylenically unsaturated monomers of one or more ethylenically unsaturated ester compounds of formula (II) where R is hydrogen or methyl, R4 means a linear or branched alkyl residue with 7-40 carbon atoms, R5 and R6 independently are hydrogen or a group of the formula - COOR", where R" means hydrogen or ...

LUBRICATING MEMBER FOR RAZOR CARTRIDGES

The invention relates to a lubricating member for a razor cartridge comprising a water soluble polymer and a silicone polyether block copolymer comprising from 1 to 50%, by weight of polyethylene oxide, from 20% to 90%, polypropylene oxide and from 1% to 20%, by weight of silicone for improved lubrication.

HIGH ELASTOHYDRODYNAMIC SHEAR STRENGTH FLUID COMPOSITIONS

A lubrication fluid including cyclic hydrocarbons in combination with dimethylsilicone fluids and/or di-alkyl or di-cycloalkyl or alkyl-cycloalkyl, or mixtures thereof, and di-end- capped polypropylene oxides or highly branched esters to produce very high traction elastohydrodynamic (EHD) traction fluids and to modify the low temperature viscometric properties of the mixed fluids without adversely affecting the very high elastohydrodynamic shear strength or traction coefficients of the very high shear strength cyclic hydrocarbon fluid in the resulting mixed fluids with improved low temperature viscosity.

LUBRICANT FOR PERCUSSION EQUIPMENT

This invention discloses a lubricant suitable for use in percussion equipment. The lubricant comprises a base oil selected from the group consisting of Group I or Group II, blended in a synergistic amount with a gear oil package and a friction modifier. The lubricant exhibits superior wear and superior extreme pressure properties due to the synergistic effect of the gear oil package and the friction modifier. In a preferred embodiment, the gear oil package comprises a polyalkyl methacrylate polymer,and the friction modifier comprises a synthetic ester.

PERCUSSION EQUIPMENT LUBRICANT COMPOSITIONS COMPRISING A GROUP I OR II BASE OIL, SULFUR-PHOSPHORUS HYDROCARBONS, AND SYNTHETIC ESTER FRICTION MODIFIER

This invention discloses a lubricant suitable for use in percussion equipment. The lubricant comprises a base oil selected from the group consisting of Group I or Group II, blended in a synergistic amount with a gear oil package and a friction modifier. The lubricant exhibits superior wear and superior extreme pressure properties due to the synergistic effect of the gear oil package and the friction modifier. In a preferred embodiment, the gear oil package comprises a polyalkyl methacrylate polymer,and the friction modifier comprises a synthetic ester.

MIXTURES OF OLEFIN-ESTER COPOLYMER WITH POLYOLEFIN AS VISCOSITY MODIFIER

A lubricant composition of an oil of lubricating viscosity; an esterified copolymer with a backbone comprising units derived from (i) an a-olefm monomer of at least about 6 carbon atoms and (ii) an ethylenically unsaturated carboxylic acid in a mole ratio of 1 :3 to 3: 1; and a polymer comprising olefin monomer units of 3 to 5 carbon atoms, wherein at least 50 percent by weight of such units contain fewer than 6 carbon atoms and wherein less than 5 percent by weight of such units are ethylene monomer units; exhibits good power transfer efficiency and elastohydrodynamic film thickness.

NOVEL LUBRICATING OILS AND GREASES

The present invention relates to additives for lubricating oils and greases which endow said lubricating oils and greases with extremely good performance characteristics under boundary lubrication conditions. Such additives are derivatives of monofunctional or difunctional perfluoropolyethers constituted by mercaptans,sulfides, disulfides, phosphines, phosphine-oxides and phosphoric acid triesters.

POUR POINT DEPRESSANTS FOR HIGH MONOUNSATURATED VEGETABLE OILS AND FOR HIGH MONOUNSATURATED VEGETABLE OILS/BIODEGRADABLE BASE AND FLUID MIXTURES

An industrial lubricant composition is described that comprises (A) at least one vegetable or synthetic triglyceride oil of the formula wherein R1, R2 and R3 are aliphatic hydrocarbyl groups having at least 60 percent monounsaturated character and containing from about 6 to about 24 carbon atoms and (B) at least one pour point depressant. Optionally, the composition may also contain (C) a performance additive and (D) an oil.

Method of Making Foam in an Energy Efficient Compressor

ELECTROVISCOUS LIQUID

... 2119257 9306199 PCTABS00021 The invention relates to an electrorheological liquid which consists of an organic polymer as the polarizable disperse phase, an electrically non-conductive, non-aqueous continuous phase and a dispersing agent, and in which the disperse organic polymer has an average particle diameter of between 0.2 and 30 .mu.m and a relative half width value of the particle diameter distribution of below 0.8.

Schmiermittel

Als Kraftübertragungs- und Schmiermittel geeignete Flüssigkeit

Verfahren zur Herstellung eines Mehrbereichsgetriebeöls

РЕЗЬБОВОЕ СОЕДИНЕНИЕ ТРУБ С УЛУЧШЕННЫМИ ХАРАКТЕРИСТИКАМИ ПРИ ВЫСОКОМ КРУТЯЩЕМ МОМЕНТЕ

Смазочное покрытие, которое способно предотвращать возникновение заклинивания даже при осуществлении свинчивания с высоким крутящим моментом, и которое имеет превосходные свойства защиты от коррозии, наносят на контактные поверхности ниппеля и/или муфты резьбового соединения труб. Смазочное покрытие содержит сополимерные частицы, представляющие собой частицы акрилового кремнийорганического сополимера, имеющие средний диаметр частиц 10 до 50 мкм и диспергированные в высоковязкой матрице, состоящей из смеси, которую образуют вещество на основе канифоли, выбранное из канифоли и ее производных, воск, карбоксилат металла и основная соль металла и ароматической органической кислоты (такая как высокоосновный сульфонат кальция).

THREADED TUBULAR COMPONENT AND METHOD FOR COATING SUCH A THREADED TUBULAR COMPONENT

LUBRICATING OIL ADDITIVES

LUBRICATING COMPOSITIONS FOR TRANSMISSIONS.

LUBRICATING COMPOSITION WITH A PHASE CHANGE MATERIAL

IMPROVEMENTS HAS AN OIL COMPOSITION FOR METAL WORKING, CONTAINING A WATER-SOLUBLE CATIONIC OR AMPHOTERIC POLYMER

HUILE POUR LAMINAGE DES METAUX

COMPOSITION D'HUILE DE LAMINAGE DE METAL CARACTERISEE EN CE QU'ELLE COMPREND COMME CONSTITUANTS ESSENTIELS (A) AU MOINS UN CONSTITUANT LUBRIFIANT CHOISI DANS LE GROUPE CONSTITUE DES GRAISSES ET HUILES, HUILES MINERALES ET ESTERS D'ACIDE ALIPHATIQUE, ET (B) AU MOINS UN COMPOSE POLYMERE AMPHOTERE OU CATIONIQUE SOLUBLE DANS L'EAU CHOISI DANS LE GROUPE CONSTITUE DES COMPOSES POLYMERES POSSEDANT AU MOINS UN ATOME D'AZOTE BASIQUE OU UN ATOME D'AZOTE CATIONIQUE DANS UNE UNITE STRUCTURALE ET POSSEDANT UN POIDS MOLECULAIRE MOYEN SE SITUANT DE 1000 A 10000000.

LUBRICANT COMPOSITION ULTRA FLUID

L'invention concerne le domaine des compositions lubrifiantes pour véhicules à moteur. L'invention fournit une composition lubrifiante de grade selon la classification SAEJ300 défini par la formule (X) W (Y) dans laquelle X représente 0 ou 5 et Y représente un nombre entier allant de 4 à 20. Cette composition lubrifiante comprend au moins une huile polyalphaoléfinique (PAO), de 10 à 80 % en poids de la composition d'au moins une huile de groupe V et au moins un polymère en peigne. L'invention concerne également l'utilisation de cette composition lubrifiante pour améliorer le Fuel Eco (FE) d'un lubrifiant ou pour réduire la consommation de carburant d'un moteur, en particulier d'un moteur de véhicule, notamment d'un moteur d'un véhicule hybride.

Methods to form a finished lubricant, to produce a mixture of base with efficiency of improved espessamento of polymer and to form a fluid of automatic transmission

COMPOSICOES DE OLEO DE HIDROCARBONETO

composição de lubrificante e método para melhorar a estabilidade hidrolítica de um lubrificante a base de éster

Óleo refrigerador fluído de operacão para refrigerador e método e método para lubrificar um sistema de refrigeração

LUBRICANT POLYMERS

Refrigerant lubricant compositions

A lubricant composition has a synthetic lubricant base oil, preferably a polyol ester, and a polyether foam-inducing additive. The composition is suitable for use in a refrigerant system, particularly with HFC refrigerant gases. The foam-inducing additive is an alternative to known silicon-containing foam-inducing additives, which are not suitable for all refrigerant systems.

LUBRICATING COMPOSITIONS HAVING IMPROVED SHEAR STABILITY

A lubricating composition with improved shear stability having a kinematic viscosity (Kv100) from 5 to 32.5 cSt at 100°C, and a viscosity index from 140 to 200. The lubricating composition includes: a bi-modal blend lubricating oil including from 20 to 99 weight percent of a low viscosity basestock having a Kv100 from 2 to 8 cSt at 100°C, and from 1 to 20 weight percent of a high viscosity basestock having a Kv100 from 40 to 600 cSt at 100°C; a viscosity modifier including a copolymer having units derived from monomers of (i) an α-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof esterified with an alcohol; and an alkylated aromatic co-base stock in an amount form 1 to 8 weight percent and having a Kv100 from 3 to 15 cSt at 1 00°C.

LUBRICATING OIL COMPOSITION

As a lubricating oil composition for an internal combustion engine that improves fuel efficiency and has the primary objective of driving a generator, provided is a lubricating oil composition characterized by: (A) a base oil being a hydrocarbon base oil of which the ratio (CA/CB) of the proportion (CA) of the component having a carbon number of no greater than 24 of the carbon number distribution obtained by gas chromatography distillation to the proportion (CB) of the component having a carbon number of at least 25 being at least 2.0; the ratio (Vs/Vk) of the high-temperature high-shear (HTHS) viscosity (Vk) of the lubricating oil composition at 80°C and the HTHS viscosity (Vs) at 150°C being at least 0.4; and the kinematic viscosity at 100°C being 5.2-8 mm2/s inclusive.

LUBRICANT COMPOSITION FOR TRANSMISSION

Disclosed is a lubricant composition for transmissions which has low viscosity while achieving long fatigue life. Specifically disclosed is a lubricant composition for transmissions which is obtained by blending a lubricant base oil (A) prepared to have a kinematic viscosity at 100˚C of 1.5-6 mm2/s with a poly(meth)acrylate additive (B) so that the resulting composition has a kinematic viscosity at 100˚C of 3-8 mm2/s and a viscosity index of 95-200. The lubricant base oil (A) is composed of a lubricant base oil (A1) having a kinematic viscosity at 100˚C of not less than 1.5 and less than 7 mm2/s, or the lubricant base oil (A1) and a lubricant base oil (A2) having a kinematic viscosity at 100˚C of 7-50 mm2/s. In this connection, the components (A) and (B) further satisfy certain conditions.

OPERATING OIL FOR BUFFER

Disclosed is an operating oil for a buffer, which comprises a lubricant base oil having an urea adduct vale (defined in the description) of 4 mass% or less and a viscosity index of 100 or greater. The operating oil can achieve all of viscosity-temperature property, shear stability and anti-foaming property at high levels.

LUBRICATING COMPOSITIONS BASED ON PERFLUOROPOLYETHERS

Use as additive to stabilize perfluoropolyether lubricant oils at high temperatures, preferably higher than 200°C, of a solid polymer at room temperature, having a softening or a melting point higher than 150°C, preferably higher than 200°C, and containing in the repeating unit at least one aromatic ring, preferably in the backbone, and lubricating compositions containing said additive.

COMPOSITION FOR CUTTING OR ABRASIVE WORKING OF METAL

In one aspect, this invention provides a composition for the cutting and abrasive treatment of metals and ceramic materials comprising a hydrofluoroether and a lubricious additive. In another aspect, the present invention provides a method of cutting and abrasively treating metals and ceramic materials comprising applying to the metal or ceramic workpiece and tool a composition comprising a hydrofluoroether, and a lubricious additive.

A FUNCTIONAL FLUID AND THE USE THEREOF

The present invention concerns a functional fluid comprising A) 1 to 99 % by weight based on the total weight of the functional fluid of alkyl(meth)acrylate polymers obtainable by polymerizing a mixture of olefinically unsaturated monomers, which consists of a) 1-100 wt% based on the total weight of the ethylenically unsaturated monomers of one or more ethylenically unsaturated ester compounds of formula (I) where R is hydrogen or methyl, R1 means a linear or branched alkyl residue with 1-6 carbon atoms, R2 and R3 independently represent hydrogen or a group of the formula -COOR', where R' means hydrogen or a alkyl group with 1-6 carbon atoms, b) 0-99 wt% based on the total weight of the ethylenically unsaturated monomers of one or more ethylenically unsaturated ester compounds of formula (II) where R is hydrogen or methyl, R4 means a linear or branched alkyl residue with 7-40 carbon atoms, R5 and R6independently are hydrogen or a group of the formula -COOR", where R" means hydrogen or an ...

A METAL WORKING LUBRICANT COMPOSITION

A lubricant composition for metal forming and cutting has at least one compound of the formula (I): R1 - (AO)n - OOC - (CH2)m - Ph - (R2)p where R1 is a C1 to C15 alkyl group AO is an alkyleneoxy group which may vary along the (poly) alkylenoxy chain; n is 0 or from 1 to 100; m is 0, 1 or 2; and Ph is a phenly group, which may be substituted with groups (R2)p; where each R2 is independently an alkyl, halogen, haloalky or alkoxy group; and p is 0 or from 1 to 3; The lubricant composition also includes at least one lubricant additive selected from the group consisting of an organic ester additive, a polyalkylene glycol additive, a sulphur-containing synthetic additive, a sulphur- containing oleochemical additive, a sulphonate, a phosphorus-containing additive and a chlorinated paraffin additive. Also described are a method of using the lubricant composition in metal forming and cutting applications and the use of the lubricant composition in metal forming and cutting applications. The lubricant ...

Lubricant composition

A lubricant composition includes a biodegradable polyalkylene glycol, an inherently-biodegradable polyalkylene glycol, and a non-biodegradable polyalkylene glycol. The biodegradable polyalkylene glycol satisfies the biodegradability requirements set forth in OECD 301B. The inherently-biodegradable polyalkylene glycol satisfy the inherently-biodegradability requirements set forth in OECD 301B. The non-biodegradable polyalkylene glycol is defined by OECD 301B and satisfies the non-bioaccumulative requirements set forth in OECD 107. The lubricant composition includes the biodegradable polyalkylene glycol in an amount of at least about 30 parts by weight, the inherently-biodegradable polyalkylene glycol in an amount of from about 0.1 to about 10 parts by weight, and the non-biodegradable polyalkylene glycol in an amount of from about 0.1 to about 5 parts by weight, each based on 100 parts by weight of the lubricant composition.

Lubricant molded body, lubricant application apparatus, process cartridge, and image forming apparatus

A lubricant molded body, which is to be applied to a surface of a photosensitive layer for electrophotography in an image forming apparatus, for example, is composed of at least two kinds of higher fatty acid metallic salts having respectively different carbon numbers. As the higher fatty acid metallic salt that forms lubricant molded body, compounds such as zinc stearate, calcium stearate, barium stearate, aluminum stearate, zinc laurate, calcium laurate, etc. may be recited. The higher fatty acid metallic salts may contain at least one kind of fillers selected from the group consisting of silica, alumina, tungsten disulfide, molybdenum disulfide, graphite fluoride, graphite, boron nitride, polytetrafluoroethylene (PTFE), ethylene tetrafluoroethylene (ETFE), and polyvinylidene fluoride (PVDF).

Natural and synthetic ester-containing lubricants having enhanced hydrolytic stability

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.

Viscosity index improver concentrates

A viscosity index improver containing, in non-ester diluent oil, one or more hydrogenated, functionalized linear block copolymers having at least one block derived from monoalkenyl arene covalently linked to at least one block derived from diene in an amount that is greater than the critical overlap concentration (ch*), in mass %, for the linear block copolymers in the diluent oil; and an amount of ester base stock.

Sliding material composition, sliding molded article, and sliding member

A sliding material composition comprising a polymer component comprising (A) a high-density polyethylene and (B) an olefin block copolymer; and (C) a silane coupling agent; wherein the Si content is 0.1 to 15% by mass based on the mass of the entire sliding material composition. The sliding material composition has the same level of slidability as a resin to which particles are added.

Use of Water-free release/lubricating agents for treating the walls of a die for original shaping or reshaping

FIRE RESISTANT HYDRAULIC FLUID COMPOSITION

The present invention relates to a hydraulic fluid composition comprising: (a) a polyalkylene glycol base fluid and (b) as an anti-mist additive, an alkylene-vinyl ester copolymer having a molecular weight of between about 5,000 and 100,000 and soluble in said base fluid. In another aspect, the present invention relates to a process for imparting flame retardancy and reduced wear characteristics to a hydraulic system which comprises adding to the hydraulic system the above-identified hydraulic fluid composition.

Lubricating oil comprising hydrogenated polydiolefin block polymers

REFRIGERATOR AND REFRIGERANT COMPRESSOR

PURPOSE: To obtain a refrigerator containing a refrigerator oil capable of decreasing ozonosphere-destruction coefficient to zero and lowering globe- warming coefficient and having high compatibility by using a refrigerator oil composed of a specific fluorocarbon refrigerant and a specific fatty acid ester oil as base oil. CONSTITUTION: The objective refrigerator contains a refrigerator oil containing a base oil composed of (A) a refrigerant composed mainly of a fluorocarbon refrigerant having a critical temperature of ≥40°C, free from chlorine and preferably composed of chlorofluorocarbon 134a and (B) a fatty acid ester oil having a viscosity of 2-70cSt at 40°C and 1-9cSt at 100°C and containing plural ester bonds in the molecule. The preferable examples of the component B are compounds of formula I to formula V (R1 is H or 1-3C alkyl; R2 is 5-12C alkyl; R3 is 1-3C alkyl; n is 0 or integer of 1-5). COPYRIGHT: (C)1992,JPO&Japio ...

LUBRICATING OIL COMPOSITION

PROBLEM TO BE SOLVED: To provide a lubricating oil composition applicable to a high-speed main shaft which is equipped with a ceramic ball roller bearing or the like and is operated in a severe atmosphere of high speed and high load. SOLUTION: The lubricating oil composition comprises at least one base oil selected from among mineral oils and/or synthetic oils and incorporated therewith at least one additive, contained in the base oil, selected from the group consisting of an acid amide, obtained by a reaction of an amine with a 12-30C saturated monocarboxylic acid or an 18-24C unsaturated monocarboxylic acid, sarcosinic acid and aspartic acid derivatives. The lubricating oil composition is suitable for lubricating a ceramic ball roller bearing. A phosphorus-containing carboxylic acid, a phosphorus-containing carboxylate ester, an acidic phosphate ester, a thiophosphate ester, a thiophosphoric acid metal salt, a thiocarbamic acid metal salt or the like may be further added to the lubricating ...

ПОЛИМЕР (МЕТ)АКРИЛАТА ДЛЯ ПОВЫШЕНИЯ ИНДЕКСА ВЯЗКОСТИ

Изобретение относится к полимерам (мет)акрилата, используемым для повышения индекса вязкости, и к содержащим их композициям смазочных масел. Предложен полимер (мет)акрилата для повышения индекса вязкости, содержащий: а) 5-60 мас.% повторяющихся звеньев, являющихся производными (мет)акрилатов формулы (I)в которой R - водород или метил и R-метил, b) 15-70 мас.% повторяющихся звеньев, являющихся производными (мет)акрилатов формулы (II)в которой R - водород или метил, R- алкильный остаток с 7-30 атомами углерода, и с) 25-70 мас.% повторяющихся звеньев, являющихся производными (мет)акрилатов формулы (III)в которой R - водород или метил, n - число от 2 до 500, А - алкилен с 2-4 атомами углерода и R- атом водорода или алкильный остаток с 1-4 атомами углерода. Предложены также новая композиция смазочных масел, способ получения предложенных полимеров (мет)акрилата и варианты их применения. Технический результат - предложенный полимер обеспечивает чрезвычайно высокую эффективность оптимизации индексов ...

СОДЕРЖАЩИЕ ФУНКЦИОНАЛЬНЫЕ ГРУППЫ ПОЛИАЛКИЛ(МЕТ)АКРИЛАТЫ, ОБЛАДАЮЩИЕ УЛУЧШЕННОЙ ДЕЭМУЛЬГИРУЮЩЕЙ СПОСОБНОСТЬЮ

Изобретение относится к полиалкил(мет)акрилатному полимеру, содержащему (a) от 0 до 8 мас.% метил(мет)акрилата, (b) от 1,5 до 4,5 мас.% гидроксизамещенного C2-C4-алкил(мет)акрилата и (c) от 87,5 до 98,5 мас.% C6-C30-алкил(мет)акрилатов, где полиалкил(мет)акрилатный полимер обладает среднемассовой молекулярной массой Mw, находящейся в диапазоне от 30000 до 130000 г/моль. Также изобретение относится к композиции присадки, композиции смазочного масла, применению полиалкил(мет)акрилатного полимера в качестве средства, улучшающего индекс вязкости, двум вариантам способа улучшения индекса вязкости и деэмульгируемости композиций смазочных масел, а также к применению композиции присадки в качестве средства, улучшающего индекс вязкости. Используя настоящее изобретение можно чрезвычайно эффективным образом совместить функциональные характеристики и хорошую деэмульгируемость смазывающих композиций. 7 н. и 9 з.п. ф-лы, 11 табл.

Lubricant for percussion equipment

This invention discloses a lubricant suitable for use in percussion equipment. The lubricant comprises a base oil selected from the group consisting of Group I or Group II, blended in a synergistic amount with a gear oil package and a friction modifier. The lubricant exhibits superior wear and superior extreme pressure properties due to the synergistic effect of the gear oil package and the friction modifier. In a preferred embodiment, the gear oil package comprises a polyalkyl methacrylate polymer, and the friction modifier comprises a synthetic ester.

Azeotropic and azeotrope-like compositions of methyl perfluoroheptene ethers and ethanol and uses thereof

The present disclosure provides azeotropic and azeotrope-like compositions comprised of methylperfluoroheptene ethers and ethanol. The present disclosure also provides for methods of use for the azeotropic and azeotrope-like compositions.

High Viscosity Lubricant Compositions Meeting Low Temperature Performance Requirements

A lubricant composition characterized as having a viscosity of less than about 150,000 cP at −40° C., a kinematic viscosity of less than about 150,000 cSt at −40° C., and a kinematic viscosity of at least about 18.5 cSt at 100° C. for use in association with a device involving metal to metal contact of moving parts comprising: (a) base-stock comprising (i) at least one relatively low viscosity polyalphaolefin, (ii) at least one ester, and at least one Group III base oil; (b) viscosity improver comprising (i) at least one relatively high viscosity polyalphaolefin, and (ii) a least one olefin copolymer; (c) a performance additive comprising at least one additive effective to improve at least one property of the lubricant and/or the performance of the equipment in which the lubricant is to be used; (d) at least one pour-point depressant; and, optionally, (e) at least one antifoam agent.

Lubricating Compositions Containing Polyalkylene Glycol Mono Ethers

Provided are lubricating compositions comprising in admixture at least 40 wt % of a base stock selected from the group consisting of Group I, Group II, Group III, Group IV and Group V base stocks, or any combination thereof, one or more polyalkylene glycol mono ethers, and at least one additive. Also provided are methods of improving the friction and wear properties of a base stock selected from the group consisting of Group I, Group II, Group III, Group IV and Group V base stocks, or any combination thereof, comprising blending the base stock with one or more polyalkylene glycol mono ethers and at least one additive, to form a lubricating composition.

Lubricating oil composition

A lubricating oil composition which exceeds the fuel saving performance of a conventional low viscosity lubricating oil composition, contains (A) a lubricating base oil having a % C A of 2 or less, adjusted to a 100° C. kinematic viscosity of 1.5 to 4.5 mm 2 /s and (B) a viscosity index improver including (B1) a poly(meth)acrylate having a weight-average molecular weight of 50,000 or less in an amount of 1 to 10 percent by mass and (B2) a poly(meth)acrylate having a weight-average molecular weight of 100,000 to 250,000 in an amount of 0.1 to 5 percent by mass of the total composition. The composition has a 80° C. high-shear viscosity (Vs: mPa·s) and a 80° C. kinematic viscosity (Vk: mm 2 /s) ratio (Vs/Vk) of less than 1, a coefficient of traction of 0.02 or less at 40° C., an average speed of 3.0 m/s, a slip ratio of 10%, and a contact pressure of 0.4 GPa.

Migration of air release in lubricant base stocks

A method of improving air release in lubricant base stocks and lubricating oils is provided. The method includes providing a Group I base stock, a Group II base stock or a combination thereof and adding to the base stock an effective amount of C 7 to C 80 paraffin, wherein the lubricant base stock provides air release according to the ASTM D3427 test at least 20% lower than the same lubricant base stock not including the C 7 to C 80 paraffin. Also provided are lube base stocks and lubricating oils with improved air release and methods of making such base stocks and oils.

MINERAL BASE OIL, LUBRICANT COMPOSITION, INTERNAL COMBUSTION ENGINE, LUBRICATING METHOD OF INTERNAL COMBUSTION ENGINE

Provided is a mineral base oil satisfying the following requirements (I) to (III): 1: A mineral base oil satisfying the following requirements (I) to (III):{'sup': 2', '2, 'Requirement (I): a kinematic viscosity at 100° C. is 2 mm/s or more and less than 7 mm/s;'}Requirement (II): a viscosity index is 100 or more; andRequirement (I): a temperature gradient Δ|η*| of complex viscosity between two temperature points −10° C. and −25° C. is 60 Pas/C or less as measured with a rotary rheometer under conditions at an angular velocity of 6.3 rad/s and a strain amount of 0.1 to 100%.2: The mineral base oil according to claim 1 , further satisfying the following requirement (IV):Requirement (IV): complex viscosity η* at −35° C. is 60,000 Pa·s or less as measured with a rotary rheometer under conditions at an angular velocity of 6.3 rad/s and a strain amount of 0.1%.3: The mineral base oil according to claim 1 , having a naphthene content (% C) of 10 to 30.4: The mineral base oil according to claim 1 , having a naphthene content (% C) of 15 to 30.5: The mineral base oil according to claim 1 , having an aromatic content (% C) of 0.1 or less and a sulfur content of less than 100 ppm by mass.6: A lubricating oil composition comprising a mineral base oil satisfying the following requirements (I) to (III) and an olefinic copolymer:{'sup': 2', '2, 'Requirement (I): a kinematic viscosity at 100° C. is 2 mm/s or more and less than 7 mm/s;'}Requirement (II): a viscosity index is 100 or more; andRequirement (III): a temperature gradient Δ|η*| of complex viscosity between two temperature points −10° C. and −25° C. is 60 Pa·s/° C. or less as measured with a rotary rheometer under conditions at an angular velocity of 6.3 rad/s and a strain amount of 0.1 to 100%.7: The lubricating oil composition according to claim 6 , wherein the content of the olefinic copolymer is from 0.01 to 15.0% by mass on the basis of the whole amount of the lubricating oil composition.8: The lubricating oil ...

LUBRICATING COMPOSITION

Lubricating composition for use in the crankcase of an engine comprising: (i) a base oil comprising at least one monoester or a mixture of monoesters, wherein said monoester or mixture of monoesters has a kinematic viscosity at 100° C. of not more than 4 mm/s, a viscosity index of at least 130 and a Noack evaporation loss of not more than 20 wt %; and (ii) a polymeric viscosity index improvers selected from (a) one or more comb polymers; (b) a poly(meth)acrylate polymer having 1 to 70 mol % of one or more (meth)acrylate structural units represented by formula (1) below (1) wherein Ris a hydrogen atom or a methyl group, and Ris a straight chain or branched hydrocarbon group having not less than 16 carbon atoms; (c) styrene-diene hydrogenated copolymers; and (d) mixtures thereof. The lubricating composition of the present invention provides improved fuel economy properties. 2. A lubricating composition according to wherein said monoester or mixtures of monoesters has a kinematic viscosity at 100° C. of not more than 3.3 mm/s.3. A lubricating composition according to wherein said monoester or mixtures of monoesters has a Noack evaporation loss of not more than 15 wt %.4. A lubricating composition according to wherein the at least one monoester or mixture of monoesters is present at a total level of at least 10 wt % claim 1 , by weight of the lubricating composition.5. A lubricating composition according to wherein the at least one monoester or mixture of monoesters is present at a total level of at most 75 wt % claim 1 , by weight of the lubricating composition.6. A lubricating composition according to wherein the polymeric viscosity index improver is a comb polymer.7. A lubricating composition according to wherein the polymeric viscosity index improver is present in a solid polymer amount of from 0.1 wt % to 7 wt % claim 1 , by weight of the lubricating composition.8. A lubricating composition according to wherein said at least one monoester or mixture of said ...

VINYL-BASED COMB POLYMER

A vinyl-based comb copolymer includes a polyisobutylene-based macromonomer unit and a vinyl-based monomer unit. A polyisobutylene-based macromonomer has at least 0.8 (meth)acryloyl groups represented by a specific formula at one end of a main chain per molecule, and is copolymerized with a vinyl-based monomer. A method for producing the vinyl-based comb copolymer includes copolymerizing the polyisobutylene-based macromonomer with the vinyl-based monomer. A viscosity index improver includes the comb copolymer. A lubricating oil composition includes the comb copolymer. 2. The vinyl-based comb copolymer according to claim 1 , wherein the vinyl-based comb copolymer contains 0.05 to 20 mol % of a polyisobutylene-based macromonomer unit.3. The vinyl-based comb copolymer according to claim 1 , wherein a molecular weight distribution (Mw/Mn) of the polyisobutylene-based macromonomer ranges from 1.0 to 1.8.4. The vinyl-based comb copolymer according to claim 1 , wherein a number-average molecular weight (Mn) of the polyisobutylene-based macromonomer ranges from 1 claim 1 ,000 to 200 claim 1 ,000 as a value obtained by size exclusion chromatography (SEC) measurement based on polystyrene standards.5. The vinyl-based comb copolymer according to claim 1 , wherein Rin the general formula (1) is at least one divalent hydrocarbon group selected from the group consisting of —CHCH— claim 1 , —CHCHCH— claim 1 , and —CHCHCHCH—.6. The vinyl-based comb copolymer according to claim 1 , wherein Rand Rin the general formula (1) are each hydrogen.7. The vinyl-based comb copolymer according to claim 1 , wherein Rin the general formula (1) is a methyl group.9. A method for producing the vinyl-based comb copolymer according to claim 1 , the method comprising copolymerizing the polyisobutylene-based macromonomer with the vinyl-based monomer.10. A viscosity index improver containing the comb copolymer according to .11. A lubricating oil composition containing the comb copolymer according to . One ...

HIGH TEMPERATURE HEAT-RESISTANT OIL-BASED RELEASE AGENT, HIGH TEMPERATURE HEAT-RESISTANT ELECTROSTATIC APPLICATION-TYPE OIL-BASED RELEASE AGENT, AND APPLICATION METHOD THEREFOR

An oil-based release agent of the present invention contains a petroleum-based hydrocarbon solvent (a) and a high temperature adhesive (b), is applied to a metal die used for die casting or casting, has high adhesion and high lubricity even with respect to a metal die at a high temperature particularly of 300° C. or higher, and can prevent seizure. In addition, the present invention provides a method for applying the oil-based release agent of the present invention by controlling an adhesion amount thereof by micronization and speed-control thereof with respect to a metal die at a high temperature, and an electrostatic application method. 1. A high temperature heat-resistant oil-based release agent comprising a petroleum-based hydrocarbon solvent (a) and a high temperature adhesive (b) ,wherein the high temperature adhesive (b) is at least one selected from the group consisting of a fluororesin, polysulfone, a phenolic resin, an epoxy resin, and a silicon-containing compound, and has a weight average molecular weight of 100,000 or more.2. The high temperature heat-resistant oil-based release agent according to claim 1 , wherein the petroleum-based hydrocarbon solvent (a) is at least one selected from the group consisting of a paraffinic hydrocarbon solvent claim 1 , an olefinic hydrocarbon solvent claim 1 , a naphthenic hydrocarbon solvent claim 1 , and an aromatic hydrocarbon solvent.3. (canceled)4. The high temperature heat-resistant oil-based release agent according to claim 1 , wherein the high temperature adhesive (b) is dimethyl polysiloxane having a weight average molecular weight of 100 claim 1 ,000 or more.5. The high temperature heat-resistant oil-based release agent according to claim 1 , further comprising a low volatile conductive modifier (f).6. The high temperature heat-resistant oil-based release agent according to claim 5 , wherein the low volatile conductive modifier (f) contains at least one selected from the group consisting of an imidazolium ...

POLY(METH)ACRYLATE COPOLYMERS WITH BRANCHED C17 ALKYL CHAINS AND THEIR USE IN LUBRICANT OIL COMPOSITIONS

The presently claimed invention is directed to poly(meth)acrylate copolymers containing alkyl(meth)acrylate comonomer with branched C17 alkyl group. The invention is further related to lubricating oil compositions comprising poly(meth)acrylate copolymers containing alkyl(meth) acrylate comonomer with branched C17 alkyl group as viscosity index improving component. 115.-. (canceled)16. A poly(meth)acrylate copolymer that is obtained by polymerizing a mixture comprising:(A) C17 alkyl (meth)acrylate, where C17 alkyl chain is branched with a mean degree of branching between 2.0 and 4.0,(B) methyl methacrylate and/or methyl acrylate, and(C) alkyl methacrylate and/or alkyl acrylate with a linear or branched C2 to C30 alkyl chain.17. The copolymer of claim 16 , wherein the C17 alkyl chain is branched with a mean degree of branching between 2.8 and 3.7.18. The copolymer of claim 16 , wherein the copolymer has a weight average molecular weight Mof from 10 claim 16 ,000 to 800 claim 16 ,000 determined by gel permeation chromatography according to DIN 55672-1.19. The copolymer of claim 16 , wherein the amount of comonomer (A) is from 5 to 80 wt.-% claim 16 , based on the total weight of the poly(meth)acrylate copolymer.20. The copolymer of claim 16 , wherein the amount of comonomer (B) is from 5 to 40 wt.-% claim 16 , based on the total weight of the poly(meth)acrylate copolymer.21. The copolymer of claim 16 , wherein the amount of comonomer (C) is from 15 to 80 wt.-% claim 16 , based on the total weight of the poly(meth)acrylate copolymer.22. The copolymer of claim 16 , wherein the linear or branched C2 to C30 alkyl chain is selected from the group consisting of ethyl claim 16 , n-propyl claim 16 , iso-propyl claim 16 , n-butyl claim 16 , iso-butyl claim 16 , sec-butyl claim 16 , tert-butyl claim 16 , pentyl claim 16 , hexyl claim 16 , heptyl claim 16 , octyl claim 16 , 2-ethylhexyl claim 16 , 2-propyl heptyl claim 16 , nonyl claim 16 , decyl claim 16 , stearyl claim 16 , ...

NOVEL HYPERBRANCHED POLYESTERS AND THEIR USE AS WAX INHIBITOR, AS POUR POINT DEPRESSANT, AS LUBRICANT OR IN LUBRICATING OILS

The invention relates to a method for the preparation of a hyperbranched polyester mixture obtainable by reacting a hydroxyl group containing carboxylic acid (B) with at least one carboxylic acid group and at least two hydroxyl groups with a diol (C) having a molecular weight of more than 100 g/mol, optionally in the presence of at least one further reactant, wherein the at least one further reactant is a polyol (A) having at least three hydroxyl groups under a reaction condition allowing ester and ether formation; and reacting the mixture resulting from step (a) with a hydrophobic carboxylic acid (D) resulting in the hyperbranched polyester mixture. The invention further relates to said hyperbranched polyester mixture and the use as wax inhibitor, as pour point depressant, as lubricant or in lubricating oils. 116.-. (canceled)17. A method for the preparation of a hyperbranched polyester mixture obtainable by(a) reacting a hydroxyl group containing carboxylic acid (B) with at least one carboxylic acid group and at least two hydroxyl groups with a diol (C) having a molecular weight of more than 100 g/mol, in the presence of at least one further reactant, wherein the at least one further reactant is a polyol (A) having at least three hydroxyl groups under a reaction condition allowing ester and ether formation; and(b) reacting the mixture resulting from step (a) with a hydrophobic carboxylic acid (D) or an activated form thereof, wherein at least 30% of terminal OH groups are converted into hydrophobically modified groups resulting in the hyperbranched polyester mixture.18. The method of claim 17 , wherein the reaction condition in step (a) comprises a reaction temperature of more than 80° C.19. The method of claim 17 , wherein the reaction condition in step (a) comprises acidic conditions.20. The method of claim 17 , wherein the reaction condition in step (a) comprises a reaction temperature of more than 140° C. and is carried out in the presence of an acid.21. The ...

FLUORINATED POLYACRYLATE ANTIFOAM COMPONENTS FOR LUBRICATING COMPOSITIONS

There is disclosed an antifoam component for a mechanical device which includes a fluorinated poly(acrylate) copolymer. The antifoam component has improved foam performance and thermal stability in finished fluids, such as driveline fluids. 1. A lubricating composition , comprising:a) an oil of lubricating viscosity selected from the group consisting of a Group III oil, a Group IV oil, a Group V oil, or mixtures thereof; andb) an antifoam component comprising a poly(acrylate) copolymer including:{'sub': 4', '8, '(i) from about 50 wt % up to about 90 wt % of an acrylate monomer having Cto Calkyl esters of acrylic acid;'}{'sub': 2', '3, '(ii) from about 10 wt % up to about 35 wt % of an acrylate comonomer having Cto Calkyl esters of acrylic acid; and'}(iii) from about 1.0 wt % up to 20 wt % of a fluorinated acrylate monomer;{'sub': 'w', 'the antifoam component having a Mof at least 45,000 Daltons.'}2. The lubricating composition of claim 1 , wherein the acrylate monomer (i) is present in an amount of about 54 wt % claim 1 , or 72 wt % claim 1 , and the acrylate comonomer (ii) is present in an amount of about 31 wt % or 23 wt %.3. The lubricating composition of claim 1 , wherein the acrylate monomer (i) comprises 2-ethylhexyl acrylate.4. The lubricating composition of claim 1 , wherein the comonomer (ii) comprises ethyl acrylate or propyl acrylate.5. The lubricating composition of claim 1 , wherein the acrylate monomer (i) is 2-ethylhexyl acrylate and the acrylate comonomer (ii) is ethyl acrylate.6. The lubricating composition of claim 1 , wherein the fluorinated acrylate comonomer is branched or linear.7. The lubricating composition of claim 1 , wherein the fluorinated acrylate monomer is selected from the group consisting of 2 claim 1 ,2 claim 1 ,2-trifluoroethyl acrylate claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3 claim 1 ,-hexafluoroisopropyl acrylate claim 1 , octafluoropentylmethacrylate claim 1 , heptadecafluoroundecyl acrylate and tridecafluorooctyl ...

REFRIGERATION OIL COMPOSITION AND WORKING FLUID FOR REFRIGERATION SYSTEM

A refrigeration oil composition includes: a mixture of a naphthenic mineral oil and at least one of a polyol ester oil and a polyvinyl ether oil; and at least one of a sorbitan compound and a glycerin fatty acid ester and a working fluid for a refrigeration system includes: the refrigeration oil composition; and one or more refrigerants selected from a hydrofluorocarbon refrigerant, a hydrofluoroolefin refrigerant and a carbon dioxide refrigerant. 1. A refrigeration oil composition comprising:a mixture of a naphthenic mineral oil and at least one of a polyol ester oil and a polyvinyl ether oil; andat least one of a sorbitan compound and a glycerin fatty acid ester.2. The refrigeration oil composition according to claim 1 , comprising the mixture of the naphthenic mineral oil and the polyol ester oil claim 1 , and the sorbitan compound.3. The refrigeration oil composition according to claim 1 , comprising the mixture of the naphthenic mineral oil and the polyvinyl ether oil claim 1 , and the at least one of the sorbitan compound and the glycerin fatty acid ester.4. The refrigeration oil composition according to claim 1 , wherein in the mixture claim 1 , a mass ratio of the naphthenic mineral oil to the at least one of the polyol ester oil and the polyvinyl ether oil is that the naphthenic mineral oil:the at least one of the polyol ester oil and the polyvinyl ether oil=from 60:40 to 90:10.5. The refrigeration oil composition according to claim 1 , wherein a content of the at least one of the sorbitan compound and the glycerin fatty acid ester is from 0.5 mass % to 5 mass % of a total amount of the refrigeration oil composition.6. The refrigeration oil composition according to claim 1 , wherein a kinematic viscosity of the naphthenic mineral oil at 40° C. is from 5 mm/s to 460 mm/s claim 1 , and a kinematic viscosity of the at least one of the polyol ester oil and the polyvinyl ether oil at 40° C. is from 5 mm/s to 350 mm/s.7. The refrigeration oil composition ...

HEAT TREATMENT OIL COMPOSITION

A heat treatment oil composition is provided that suppresses the decrease of luster in a heat treatment of a metal material, and is capable of suppressing the increase of the number of second (characteristic number of second) until reaching the temperature where the vapor blanket stage ends with the lapse of time and the decrease of the kinetic viscosity with the lapse of time. The heat treatment oil composition contains (A) a base oil and (B) a vapor blanket breaking agent selected from one or more of a petroleum resin, a terpene resin, rosin, and derivatives thereof. 1. A heat treatment oil composition , comprising(A) a base oil, and(B) at least one vapor blanket breaking agent selected from the group consisting of a petroleum resin, a terpene resin, a rosin, and derivatives thereof.2. The heat treatment oil composition according to claim 1 , wherein the vapor blanket breaking agent as the component (B) has a softening point measured by the ring and ball method of JIS K2207:2006 of 40° C. or more.3. The heat treatment oil composition according to claim 2 , wherein the vapor blanket breaking agent as the component (B) has a softening point measured by the ring and ball method of JIS K2207:2006 of 60° C. or more and 150° C. or less.4. The heat treatment oil composition according to claim 1 , wherein the base oil as the component (A) has a 40° C. kinetic viscosity of from 5 to 500 mm/s.5. The heat treatment oil composition according to claim 1 , comprising:80% by mass or more and less than 100% by mass of the base oil, andmore than 0% by mass and 20% by mass or less of the vapor blanket breaking agent,based on a total mass the total amount of the heat treatment oil composition.6. The heat treatment oil composition according to claim 1 , wherein the heat treatment oil composition has a characteristic number of second obtained from a cooling curve obtained according to the cooling capability test method of JIS K2242:2012 of 3.00 seconds or less. The present invention ...

Phosphorylated Dispersants in Fluids for Electric Vehicles

The present disclosure relates to a lubricating fluid for an electric motor system and a method of lubricating gears and cooling a motor in an electric motor system. In particular, the disclosed technology relates to a lubricating fluid, for use in electric motor vehicle, comprising an oil of lubricating viscosity and at least one phosphorylated dispersant exhibiting increased resistivity after aging. 1. A lubricating composition for use in an electric vehicle comprising:at least 95 weight percent of a lubricating base oil composition, the lubricating base oil composition including base oil selected from API Group III base oils or blends of Group III base oils with Group II, Group V base oils or mixtures thereof;a phosphorylated succinimide dispersant containing 2 wt % to 3.5 wt % phosphorus, the phosphorylated succinimide dispersant providing 650 ppm or less phosphorus to the lubricating composition;the lubricating composition having 700 ppm or less total phosphorus and the phosphorylated succinimide dispersant provides at least 70% of the total phosphorus; andwherein the lubricating composition has a kinematic viscosity from 3 cSt to 6.5 cSt at 100° C. and has a resistivity of at least 50 M Ω·m, as measured according to ASTM D2624-15 using the lubricating composition at 1.5 volts and at 30° C., after the fluid has been aged according to JIS K2514-1 at 150° C.;wherein if the lubricating base oil composition comprises API Group V base oil, the API Group V base oil is present in an amount up to 15 wt % based on the total lubricating composition;wherein if the lubricating base oil composition comprises API Group II base oil, the API Group II is present in an amount up to 80 wt % base on the total lubricating composition.2. The lubricating composition of claim 1 , wherein the phosphorylated succinimide dispersant is a first dispersant and wherein the composition further comprises a second dispersant containing 0.2 wt % to 0.4 wt % phosphorus claim 1 , the second ...

High viscosity lubricants with polyether

Disclosed is a method of treating a used hydrocarbon lubricant of ISO Viscosity Grade 46 or higher comprising oxidation products that adversely affect lubricant performance. The hydrocarbon lubricant has a Group II hydrocarbon oil or Group III hydrocarbon oil, optionally one or more lubricant additives, and an amount of varnish. The hydrocarbon lubricant is free of zinc-containing additives. The method comprises adding to the used hydrocarbon lubricant from about 2 percent by weight to about 20 percent by weight of a polyhydroxy polypropylene oxide homopolymer that has a hydroxyl number of from about 12 mg KOH/g to about 58 mg KOH/g as measured according to ASTM D4274.

WAX ISOMERIZED OIL

The present invention provides a wax isomerized oil, wherein a content of a hydrocarbon compound having an even number of carbon atoms, as determined from a chromatogram obtained by mass spectrometry, is more than 50% by mass based on a total amount of the wax isomerized oil. 1. A wax isomerized oil , wherein a content of a hydrocarbon compound having an even number of carbon atoms , as determined from a chromatogram obtained by mass spectrometry , is more than 50% by mass based on a total amount of the wax isomerized oil.2. The wax isomerized oil according to claim 1 , wherein the content is 70% by mass or more based on the total amount of the wax isomerized oil.3. The wax isomerized oil according to claim 1 , wherein the wax isomerized oil is an isomerized oil of an ethylene polymer wax.4. The wax isomerized oil according to claim 1 , wherein the wax isomerized oil is an isomerized oil of an ethylene polymer wax not subjected to any hydrocracking treatment.5. The wax isomerized oil according to claim 1 , wherein the wax isomerized oil is an isomerized oil obtained by hydroisomerizing an ethylene polymer wax at a temperature of 315° C. or more and 350° C. or less.6. The wax isomerized oil according to claim 1 , wherein the wax isomerized oil is an isomerized oil obtained by hydroisomerizing an ethylene polymer wax at a temperature of 325° C. or more and 335° C. or less. The present invention relates to a wax isomerized oil.Conventionally, there has been wax isomerized oil in addition to mineral base oil, as lubricating base oil. As the examples of wax for a raw material of wax isomerized oil, natural wax such as petroleum slack wax obtained by solvent dewaxing of hydrocarbon oil, or synthetic wax such as one produced by Fischer Tropsch synthesis by use of synthetic gas (FT wax), are included. There is known, as a method for producing a wax isomerized oil low in viscosity and high in viscosity index, a method involving performing hydrotreatment of a raw material wax ...

NOVEL FLUORINATED POLYACRYLATES ANTIFOAMS IN ULTRA-LOW VISCOSITY (<5 CST) FINISHED FLUIDS

There is disclosed an antifoam component for a mechanical device which includes a poly(acrylate) copolymer. The antifoam component has improved foam performance in finished fluids utilizing dibutyl hydrogen phosphite compounds, such as driveline fluids. A lubricating composition comprising a) at least one oil of lubricating viscosity; and b) an antifoam component comprising a poly(acrylate) copolymer. The poly(acrylate) copolymer, b) may include (i) from about 30 wt % up to about 99 wt % of a (meth)acrylate monomer having Cto Calkyl esters of (meth)acrylic acid; and (ii) from about 1 wt % up to about 70 wt % of a fluorinated (meth)acrylate monomer. 1. A lubricating composition comprising:a) at least one oil of lubricating viscosity; and [{'sub': 1', '4, '(i) from about 40 wt % up to about 80 wt % of a (meth)acrylate monomer having Cto Calkyl esters of (meth)acrylic acid; and'}, '(ii) from about 20 wt % up to about 60 wt % of a fluorinated (meth)acrylate monomer;', {'sub': 'w', 'the antifoam component having a Mof at least 1,000 Daltons.'}], 'b) an antifoam component comprising a poly(acrylate) copolymer including2. The lubricating composition of claim 1 , wherein the (meth)acrylate monomer has Cto Calkyl esters of (meth)acrylic acid.3. A lubricating composition comprising:a) at least one oil of lubricating viscosity; and [{'sub': 1', '3, '(i) from about 20 wt % up to about 55 wt % of a (meth)acrylate monomer having Cto Calkyl esters of (meth)acrylic acid; and'}, '(ii) from about 5 wt % up to about 50 wt % of a fluorinated (meth)acrylate monomer; and', {'sub': 4', '12, '(iii) from about 20 wt % up to about 75 wt % of a (meth)acrylate comonomer having Cto Calkyl esters of (meth)acrylic acid;'}], 'b) an antifoam component comprising a poly(acrylate) copolymer including{'sub': 'w', 'the antifoam component having a Mof at least 1,000 Daltons.'}4. (canceled)5. The lubricating composition of or claim 1 , wherein the at least one oil of lubricating viscosity is a Group I ...

High viscosity index lubricating oil base stock and viscosity modifier combinations, and lubricating oils derived therefrom

A lubricating composition including a first base stock component including: one or more metallocene catalyzed polyalphaolefins (mPAOs), each mPAO having a kinematic viscosity (Kv 100 ) from 40 cSt to 155 cSt and a viscosity index (VI) from 150 to 207; a second base stock including one or more polyalphaolefins (PAOs), each PAO having a kinematic viscosity (Kv 100 ) less than 10 cSt and a VI from 130 to 145; and a viscosity modifier including a copolymer having units derived from monomers of (i) an α-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof esterified with an alcohol. A lubricant including the above lubricating composition. A method for improving fuel efficiency, while maintaining or improving wear control, load carrying capacity and/or traction reduction in a driveline device, e.g., gears and transmissions, lubricated with a lubricating oil, by using as the lubricating oil the above lubricant.

Polymeric Surfactants for Improved Emulsion and Flow Properties at Low Temperatures

A polymer surfactant for improving engine oil emulsion properties of a lubricating composition mixed with water and/or fuel contamination, particularly at very cold temperatures, is described herein. In approaches, selected polymeric and functionalized compounds can impart both robust emulsion properties and simultaneously deliver good low temperature fluidity for lubricating compositions that may contain residual amounts of water and/or fuel contamination. Lubricating compositions including such surfactants demonstrate robust properties at temperatures down to about −30° C.

LUBRICATING ENGINE OIL FOR IMPROVED WEAR PROTECTION AND FUEL EFFICIENCY

Provided are lubricating engine oils including a lubricating oil base stock as a major component having a base oil viscosity at 100 deg. C. ranging from 4.5 to 7.5 cSt, and a carboxylic functionalized polymer dispersant with aromatic amine functionality, as a minor component, wherein the lubricating engine oils have a cold crank simulator viscosity at −30 deg. C. of less than 8500 mPa·s. The lubricating engine oils may provide improved engine wear protection at equivalent fuel efficiency or improved fuel efficiency at equivalent engine wear protection compared to a lubricating engine oil containing a dispersant as a minor component other than the carboxylic functionalized polymer with aromatic amine functionality. Methods of making the lubricating engine oil are also provided. The lubricating engine oils are useful in internal combustion engines including direct injection, gasoline and diesel engines. 1. A multi-grade lubricating engine oil comprising a lubricating oil base stock as a major component , and a carboxylic functionalized polymer dispersant with aromatic amine functionality , as a minor component , wherein the lubricating engine oil base oil viscosity at 100 deg. C. ranges from 4.5 to 7.5 cSt , wherein the lubricating engine oil has a cold crank simulator viscosity at −30 deg. C. of less than 8500 mPa·s and wherein fuel efficiency as measured by HTHS (ASTM D4683) and/or engine wear protection as measured by HFRR wear scar (ISO Provisional Standard , TC22/SC7N959 , 1995) are improved or maintained as compared to fuel efficiency and engine wear protection achieved using a multi-grade lubricating engine oil containing a dispersant as a minor component other than the carboxylic functionalized polymer with aromatic amine functionality.2. The oil of claim 1 , wherein the lubricating oil base stock is selected from the group consisting of a Group I base stock claim 1 , a Group II base stock claim 1 , a Group III base stock claim 1 , a Group IV base stock claim ...

LUBRICANT FOR A TWO-STROKE MARINE ENGINE

Relating to the field of lubricant, more particularly relates to lubricant for marine engine, notably for a two-stroke marine engine. More particularly, relates to a lubricant for a marine engine including at least one lubricant base oil and at least one fatty amine. 115.-. (canceled)17. Lubricant composition according to claim 16 , wherein the polyalkylamine composition comprises at least 4% w/w of branched compounds of formula (I) or (II) claim 16 , with regards to the total weight of polyalkylamine compounds (I) and (II) in the composition claim 16 , branched compound signifying that:in formula (I) at least one of n or z are superior or equal to 1,in formula (II) n is superior or equal to 1.18. Lubricant composition according to claim 16 , wherein the polyalkylamine composition comprises at least 5% by weight claim 16 , with regards to the total weight of compounds (I) and (II) claim 16 , of products of formulae (I) and (II) with a linear structure claim 16 , linear meaning n is 0 in formulae (I) and (II) and z is 0 in formula (I).19. Lubricant composition according to claim 16 , wherein the polyalkylamine composition further comprises derivatives of polyalkylamines of formula (I) or (II) claim 16 , wherein said derivatives are alkoxylates which are optionally methylated.20. Lubricant composition according to claim 16 , wherein the polyalkylamine composition further comprises derivatives of polyalkylamines of formula (I) or (II) claim 16 , wherein said derivatives are methylated.21. Lubricant composition according to claim 16 , wherein the polyalkylamine composition has a BN measured according to standard ASTM D-2896 from 150 to 350 milligrams of potash per gram of amine compound.22. Lubricant composition according to claim 16 , having a BN claim 16 , measured according to standard ASTM D-2896 claim 16 , greater than or equal to 70 milligrams of potash per gram of the lubricant composition.23. Lubricant composition according to claim 22 , wherein the percentage ...

Novel formulation for lubrication of hyper compressors providing improved pumpability under high-pressure conditions

The present disclosure provides a lubricating composition with improved high-pressure pumpability and/or reduced viscosity at high pressures, as well as method of making and using the same. The lubricating composition includes a white oil and a polymeric thickener present in an amount equal to or less than about 40 wt % of the lubricating composition. The white oil has a kinematic viscosity of at least one of: about 80 mm2/sec to about 120 mm2/sec at 40° C. and/or about 9.5 mm2/sec to about 14 mm2/sec at 100° C.

LUBRICATING OIL COMPOSITION

The present invention relates to a lubricating oil composition containing a base oil (A) and a viscosity index improver (B) such that in X-ray small-angle scattering spectra obtained through measurement at 40° C. and 100° C., a ratio [Δ|α(40)|/Δ|α(100)|] between Δ|α(40)| and Δ|α(100)|, each of which is an absolute value of a slope of a straight line calculated in a range of the scattering vector q as the x axis of from 0.1 nm to 1 nm by the least-squares method, is 1.5 or more. 1. A lubricating oil composition comprising a base oil (A) and a viscosity index improver (B) in which a ratio [Δ|α(40)|/Δ|α(100)|] between Δ|α(40)| and Δ|α(100)| as calculated through the following operations (i) to (iii) is 1.5 or more:{'sup': '−1', 'Operation (i): a sample oil comprising the viscosity index improver (B) dissolved in a mineral oil is prepared, and X-ray small-angle scattering measurement is performed under a temperature condition at 40° C. to acquire X-ray small-angle scattering spectra (x axis: scattering vector q (nm), y axis: common logarithm log (I) of scattering intensity I) at 40° C. and 100° C., respectively;'}{'sup': −1', '−1, 'Operation (ii): in the X-ray small-angle scattering spectrum at 40° C. obtained in Operation (i), an absolute value Δ|α(40)| of a slope of a straight line is calculated in a range of the scattering vector q as the x axis of from 0.1 nmto 1 nmby the least-squares method; and'}{'sup': −1', '−1, 'Operation (iii): in the X-ray small-angle scattering spectrum at 100° C. obtained in Operation (i), an absolute value Δ|═(100)| of a slope of a straight line is calculated in a range of the scattering vector q as the x axis of from 0.1 nmto 1 nmby the least-squares method.'}2. The lubricating oil composition according to claim 1 , wherein the base oil (A) comprises a mineral oil.3. The lubricating oil composition according to claim 2 , wherein the mineral oil is a mineral oil classified into Group 2 or Group 3 of the base stock categories of the API ( ...

Use Of Polytetrahydrofurans In Lubricating Oil Compositions

An axle lubricating oil composition includes a polyalphaolefin having a kinematic viscosity at 100° C. of from 2 to 40 cSt when measured in accordance with ASTM D445. The axle lubricating oil composition also includes an alkoxylated polytetrahydrofuran of general formula (II). The alkoxylated polytetrahydrofuran of general formula (II) is present in an amount of from 10 to 40 parts by weight based on 100 parts by weight of the axle lubricating oil composition. 2. The axle lubricating oil composition according to wherein said polyalphaolefin has a kinematic viscosity at 100° C. of from 2 to 10 cSt when measured in accordance with ASTM D445 claim 1 , with said polyalphaolefin being present in an amount of from 40 to 50 parts by weight based on 100 parts by weight of said axle lubricating oil composition.3. The axle lubricating oil composition according to further comprising a carboxylic acid ester in an amount of from 5 to 20 parts by weight based on 100 parts by weight of said axle lubricating oil composition.4. The axle lubricating oil composition according to wherein k is an integer in the range of ≧3 to ≦25.5. The axle lubricating oil composition according to wherein k is an integer in the range of ≧5 to ≦20 claim 1 , and wherein (m+m′) is in the range of ≧3 to ≦65.6. The axle lubricating oil composition according to claim 1 , wherein the alkoxylated polytetrahydrofuran has a weight average molecular weight in the range of 4000 to 7000 g/mol determined according to DIN 55672-1 (polystyrene calibration standard) claim 1 , and wherein the ratio of (m+m′) to k is in the range of 0.3:1 to 6:1.7. The axle lubricating oil composition according to having a KRL Shear loss after 200 hours of less than 8% when measured in accordance with CEC L-45-A-99.8. The axle lubricating oil composition according to wherein Rdenotes an unsubstituted claim 1 , linear alkyl radical having 6 claim 1 , 7 claim 1 , 8 claim 1 , 9 claim 1 , 10 claim 1 , 11 claim 1 , 12 claim 1 , 13 claim 1 , ...

GEAR OIL COMPOSITION

The presently claimed invention relates to a gear oil composition having a kinematic viscosity at 40° C. in the range of ≥68 to ≤1000 cSt when measured in accordance with ASTM D445. The gear oil composition is useful as a lubricant in a gear box, especially in a wind turbine gear box.

ELECTRIC DISCHARGE MACHINING OIL COMPOSITION, METHOD FOR MANUFACTURING ELECTRIC DISCHARGE MACHINING OIL COMPOSITION, AND ELECTRIC DISCHARGE MACHINING METHOD

The present invention relates to an electric discharge machining oil composition and an electric discharge machining method capable of enhancing machining speed in electric discharge machining. This electric discharge machining oil composition is characterized by including (A) a base oil, and (B) one or more types of petroleum resin selected from hydrogenated products of copolymers of dicyclopentadiene and an aromatic compound and having a softening point of 75 to 185° C. and a mean molecular weight (Mn) of 670 to 3000, wherein the kinematic viscosity of the electric discharge machining oil composition at 40° C. is 1 to 10 mm/s. Further, the electric discharge machining method is characterized by employing said electric discharge machining oil composition, and includes interposing the electric discharge machining oil composition between a workpiece and an electrode, and generating an electric discharge between the workpiece and the electrode in this state to machine the workpiece. 1: An electric discharge machining oil composition , comprising:a base oil; and{'sup': '2', 'a petroleum resin, which is hydrogenated product of a copolymer of dicyclopentadiene and an aromatic compound, and which has a softening point of from 75 to 185° C. and a number-average molecular weight (Mn) of from 670 to 3000, wherein a kinetic viscosity of the electric discharge machining oil composition at 40° C. is from 1 to 10 mm/s.'}2: The electric discharge machining oil composition according to claim 1 , wherein a content of an aromatic compound unit in the petroleum resin is from 0 to 50% by mass based on the aromatic compound.3: The electric discharge machining oil composition according to claim 1 , wherein the hydrogenated product of the copolymer of dicyclopentadiene and the aromatic compound is a partially hydrogenated product or a completely hydrogenated product.4: The electric discharge machining oil composition according to claim 1 , wherein the hydrogenated product of the ...

SOLID LUBRICANT, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD

A solid lubricant containing a fatty acid metal salt and a polyethylene having an acid value is prepared. The solid lubricant is disposed so as to be applied on a surface of an image bearing member of an image forming apparatus in electrophotography, and a lubricant layer is formed on the surface of the image bearing member with the solid lubricant. 1. A solid lubricant for forming a lubricant layer on a surface of an image bearing member of an image forming apparatus in electrophotography by being applied on the surface of the image bearing member , the solid lubricant comprising:a fatty acid metal salt; anda polyethylene having an acid value.2. The solid lubricant according to claim 1 , whereinthe polyethylene having an acid value has one or both of a carboxyl group and a carboxylic acid anhydride group.3. The solid lubricant according to claim 1 , whereinthe polyethylene having an acid value has a structure of a copolymer of an acidic monomer and ethylene.4. The solid lubricant according to claim 1 , whereinthe fatty acid metal salt is zinc stearate.5. An image forming apparatus comprising:a rotatable image bearing member;a charging device for charging the image bearing member;a transfer device for transferring a toner image born on the charged image bearing member to a toner receiving article; anda lubricant applying device for applying a lubricant on a surface of the image bearing member, the lubricant applying device being disposed between the transfer device and the charging device in a rotational direction of the image bearing member, wherein [{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the solid lubricant according to ;'}, 'a lubricant applying member that has flexibility and is to be disposed so as to abut freely on the surface of the image bearing member; and', 'a lubricant supplying device for supplying the solid lubricant to the lubricant applying member., 'the lubricant applying device comprises6. An image forming method comprising:charging an ...

Composition for Sliding Member

A composition for sliding member includes a binder resin, a solid lubricant, and an epoxy modified silicone oil having an epoxy group at both ends or at one end thereof. A weight ratio of the binder resin and the epoxy modified silicone oil is 97:3 to 75:25.

LUBRICATING THERMOPLASTIC RESIN COMPOSITION AND FORMED ARTICLE THEREOF

[Object] To provide lubricating thermoplastic resin compositions that can give formed articles exhibiting excellent lubricating properties and surface appearance and maintaining the lubricating properties permanently. 1. A lubricating thermoplastic resin composition comprising an acid-modified copolymer (A) and a functionalized lubricant (B) ,the acid-modified copolymer being a copolymer of a monomer mixture including an aromatic vinyl and a vinyl cyanide,the copolymer (A) having a carboxyl group in the molecular chain, andthe functionalized lubricant (B) having, in a molecule thereof, a functional group (B1) capable of reacting with the carboxyl group and a lubricating segment (B2) having lubricating properties.2. The lubricating thermoplastic resin composition according to claim 1 , wherein the functional group (B1) in the functionalized lubricant (B) is any of an amino group claim 1 , a hydroxyl group claim 1 , an epoxy group and a carboxylic acid anhydride group.3. The lubricating thermoplastic resin composition according to claim 1 , wherein the lubricating segment (B2) in the functionalized lubricant (B) is any of a perfluoroalkyl group claim 1 , a polysiloxane chain and a polyethylene chain.4. The lubricating thermoplastic resin composition according to claim 2 , wherein the functionalized lubricant (B) is at least one selected from the group consisting of perfluoroalkyl compounds claim 2 , silicones and polyethylenes which are each modified with any of an amino group claim 2 , a hydroxyl group claim 2 , an epoxy group and a carboxylic acid anhydride group.5. The lubricating thermoplastic resin composition according to claim 1 , further comprising a graft copolymer (C) and/or an additional thermoplastic resin (D) other than the acid-modified copolymer (A).6. The lubricating thermoplastic resin composition according to claim 1 , wherein the composition contains the functionalized lubricant (B) in an amount of 0.01 to 25 parts by mass with respect to 100 parts ...

LUBRICATING OIL COMPOSITION FOR TRANSMISSIONS

The present invention provides a lubricating oil composition for transmissions which is improved in fuel saving properties and has excellent metal fatigue prevention properties and heat resistance. The lubricating oil composition comprises (A) a mineral base oil having a 100° C. kinematic viscosity of 1.5 mm/s or higher and 3.5 mm/s or lower, a pour point of −25° C. or lower, a viscosity index of 110 or greater, a % Cof 2 or greater and 20 or less and a % Cof 3 or less, the lubricating oil composition having a 100° C. kinematic viscosity of 2.5 mm/s or higher and 3.8 mm/s or lower. 1. A lubricating oil composition for transmissions comprising (A) a mineral base oil having a 100° C. kinematic viscosity of 1.5 mm/s or higher and 3.5 mm/s or lower , a pour point of −25° C. or lower , a viscosity index of 110 or greater , a % CN of 2 or greater and 20 or less and a % CA of 3 or less ,{'sup': 2', '2, 'the lubricating oil composition having a 100° C. kinematic viscosity of 2.5 mm/s or higher and 3.8 mm/s or lower.'}2. The lubricating oil composition for transmissions according to claim 1 , wherein (A) the mineral base oil has a naphthene content of 3 percent by mass or more and 15 percent by mass or less.4. The lubricating oil composition for transmissions according to claim 3 , wherein Component (B) comprises (B-1) a poly(meth)acrylate produced by polymerizing a monomer component comprising at least the following (Ba-1) to (Bd-1):{'sup': '2', '(Ba-1) a (meth)acrylate wherein Ris an alkyl group having 1 to 4 carbon atoms: 20 to 60 percent by mass;'}(Bb-1) a (meth)acrylate wherein R2 is an alkyl group having 5 to 10 carbon atoms: 0 to 30 percent by mass;(Bc-1) a (meth)acrylate wherein R2 is an alkyl group having 11 to 18 carbon atoms: 20 to 70 percent by mass; and(Bd-1) a (meth)acrylate wherein R2 is an alkyl group having 19 to 40 carbon atoms: 5 to 50 percent by mass.5. The lubricating oil composition for transmissions according to claim 3 , wherein Component (B) ...

ALKYLPHENOL DETERGENTS

The disclosed technology provides a lubricating composition comprising an oil of lubricating viscosity and a detergent comprising a polyolefin-substituted hydroxy-aromatic carboxylic acid or salt thereof, wherein the polyolefin is derived from a branched alkene having at least 4 carbon atoms and wherein the polyolefin has a number average molecular weight of 150 to 800. The invention further relates to a method of lubricating a mechanical device with the lubricant composition. 2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. The lubricating composition of claim 1 , wherein the detergent is a metal salt.10. The lubricating composition of claim 9 , wherein the metal in the salt comprises calcium.11. The lubricating composition of claim 9 , wherein the metal is overbased.12. The lubricating composition of claim 1 , wherein the detergent is free of C8 and higher unbranched alkyl chains.13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. The lubricating composition of claim 1 , wherein the polyisobutylene has a number average molecular weight of 300 to 400.18. The lubricating composition of claim 1 , wherein the alkylsalicylate is at least 0.01 wt. % of the lubricating composition.19. The lubricating composition of claim 18 , wherein the alkylsalicylate is at least 0.1 wt. %.20. The lubricating composition of claim 18 , wherein the alkylsalicylate is up to 20 wt. of the lubricating composition.21. The lubricating composition of claim 1 , wherein the oil of lubricating viscosity comprises at least one of an API Group I claim 1 , II claim 1 , III claim 1 , IV claim 1 , and V base oil.22. The lubricating composition of claim 1 , wherein the oil of lubricating viscosity is at least 10 wt. % of the lubricating composition.23. The lubricating composition of claim 22 , wherein the oil of lubricating viscosity is at least 30 wt. % of the lubricating composition.24. The lubricating composition of claim 1 , wherein the oil of ...

Cold flow additives for plastic-derived synthetic feedstock

Disclosed are pour point depressants used in compositions and methods for achieving the cold flow properties of synthetic feedstock derived from plastic.

Diluent oils for viscosity modifiers and additive packages

Embodiments of the present disclosure generally relate to diluent oils for viscosity modifiers and additive packages. Embodiments of the present disclosure also generally relate to lubricating oil compositions that include viscosity modifier concentrates and lubricating oil compositions that include additive package concentrates. Improved diluent oils capable of conveniently and cost effectively improving overall lubricant performance are provided.

POLYOLEFIN-DERIVED DISPERSANTS

Ethylene-C-Calpha olefin copolymers, dispersants and lubricating oils/fuel compositions incorporating dispersants, and related methods are generally described herein. The copolymer may comprise ethylene-derived units and C-Calpha-olefin-derived units. The C-Calpha-olefin-derived units may have a carbon number from three to ten. For example, the C-Calpha-olefin-derived units may be propylene-derived units. The dispersants may be made from copolymers having low metal and/or fluorine contents. 1. A dispersant prepared by a process comprising: functionalizing a copolymer derived from ethylene and one or more Calpha-olefins ,wherein the copolymer has a number average molecular weight of less than 5,000 g/mol as measured by GPC using polystyrene as a calibration reference;{'sup': '1', 'wherein an ethylene unit content of the copolymer is less than 80 mol %, as measured by H-NMR spectroscopy;'}{'sup': 13', '1, 'wherein the copolymer has a terminal unsaturation of 70 mol % or greater, as measured by C-NMR spectroscopy, and at least 70 mol % of the terminal unsaturation is selected from terminal vinylidene, one or more tri-substituted isomers of the terminal vinylidene and any combination thereof, as measured by H-NMR spectroscopy;'}{'sub': 'C2,Actual', 'sup': '13', 'claim-text': {'br': None, 'sub': C2,Actual', 'C2,Statistical, 'n Подробнее

Methods for making foams using blowing agents comprising unsaturated fluorocarbons

Disclosed herein are blowing agents comprising fluorocarbons and/or hydrofluorocarbons useful in foamable compositions. Also disclosed are methods for forming a foam comprising the aforementioned blowing agents.

VISCOSITY INDEX IMPROVER AND LUBRICATING OIL COMPOSITION

A viscosity index improver containing a copolymer (A) whose essential constituent monomer is a monomer (a) having a number average molecular weight of 800 to 4,000 represented by the following formula (1), the copolymer (A) having a solubility parameter in the range of 9.00 to 9.40: 3. The viscosity index improver according to claim 1 ,{'sup': '2', 'wherein in the formula (1), a structure derived from butadiene constituting a part or all of Rhas a 1,2-adduct/1,4-adduct molar ratio of 5/95 to 95/5.'}4. The viscosity index improver according to claim 1 ,wherein the copolymer (A) contains, as a constituent monomer, 10 to 50% by weight of the monomer (a) based on the weight of the copolymer (A).5. The viscosity index improver according to claim 1 ,wherein the copolymer (A) has a weight average molecular weight of 5,000 to 2,000,000.6. The viscosity index improver according to claim 1 ,wherein the copolymer (A) is a copolymer further containing an alkyl (meth)acrylate (b) having a C1-C4 alkyl group as a constituent monomer.10. The viscosity index improver according to claim 1 ,wherein the copolymer (A) is a copolymer further containing at least one monomer selected from the group consisting of a nitrogen atom-containing monomer (f), a hydroxyl group-containing monomer (g), a phosphorus atom-containing monomer (h), and an aromatic ring-containing vinyl monomer (i).12. A lubricating oil composition comprising:at least one base oil selected from the group consisting of API Group I to IV base oils, GTL base oils, and synthetic lubricant base oils; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the viscosity index improver according to ,'}wherein the amount of the copolymer (A) in the lubricating oil composition is 0.1 to 20% by weight.13. The lubricating oil composition according to claim 12 , further containing at least one additive selected from the group consisting of dispersants claim 12 , detergents claim 12 , antioxidants claim 12 , oiliness improvers claim 12 , ...

COMPOUND COMPRISING POLYAMINE, ACIDIC AND BORON FUNCTIONALITIES AND ITS USE AS A LUBRICANT ADDITIVE

A product resulting from the reaction of at least: a hydroxybenzoic acid, optionally substituted by a hydrocarbyl group, a boron compound, an amine component selected from a di-fatty-alkyl(ene) polyalkylamine composition including one or more polyalkylamines of formulae (I) or (II). A lubricant composition includes this product. Use of this product as a lubricant for two-stroke marine engines and four-stroke marine engines, more preferably two-stroke marine engines. 114-. (canceled)16. The product according to claim 15 , wherein the hydroxybenzoic acid claim 15 , optionally substituted by a hydrocarbyl group claim 15 , is selected from the group consisting of: mono-alk(en)yl substituted salicylic acids claim 15 , di-alk(en)yl substituted salicylic acids claim 15 , acid functionalized calixarenes and mixtures thereof.18. The product according to claim 17 , wherein X comprises from 12 to 40 carbon atoms.20. The product according to claim 19 , wherein the hydroxybenzoic acid compound is salicylic acid.21. The product according to claim 15 , wherein the boron compound is selected from the group consisting of: boric acid claim 15 , boric acid complexes claim 15 , boric oxide claim 15 , a trialkyl borate in which the alkyl groups comprise independently from 1 to 4 carbon atoms claim 15 , a C-Calkyl boronic acid claim 15 , a C-Cdialkyl boric acid claim 15 , a C-Caryl boric acid claim 15 , a C-Cdiaryl boric acid claim 15 , a C-Caralkyl boric acid claim 15 , a C-Cdiaralkyl boric acid claim 15 , and products deriving from these by substitution of an alkyl group by one or more alkoxy unit.22. The product according to claim 21 , wherein the boron compound is boric acid.23. The product according to claim 15 , wherein the polyalkylamine composition comprises at least 4% w/w of branched compounds of formula (I) or (II) claim 15 , with regards to the total weight of polyalkylamine compounds (I) and (II) in the composition claim 15 , branched compound signifying that:in formula (I), ...

LUBRICATING COMPOSITIONS HAVING A MIXED DISPERSANT ADDITIVE PACKAGE

The instant disclosure generally relates to lubricating compositions having an oil of lubricating viscosity and a mixed dispersant additive package. The mixed dispersant additive package can include an acylated poly(1-olefin)-based dispersant and a poly-isobutylene succinimide dispersant where the ratio of the acylated poly(1-olefin)-based dispersant to the polyisobutylene succinimide dispersant in the lubricating composition is from 3:1 to 1:3. 1. A lubricating composition comprising:an oil of lubricating viscosity; and [{'sub': 6', '18, 'an acylated poly(1-olefin)-based dispersant, where the poly(1-olefin) is comprised of at least 75 mole percent of a Cto Chydrocarbyl;'}, 'a polyisobutylene-based dispersant;, '2 to 20 wt % of a dispersant additive package includingwhere the ratio of the acylated poly(1-olefin)-based dispersant to the polyisobutylene succinimide dispersant is from 3:1 to 1:3, or 2:1 to 1:2, or 3:2 to 2:3.2. The lubricating composition of claim 1 , wherein the poly(1-olefin) comprises at least 80 mole percent of the Cto Chydrocarbyl.3. The lubricating composition of claim 1 , wherein the 1-olefin comprises at least 90 mole percent of the Cto Chydrocarbyl.4. The lubricating composition of claim 1 , wherein the 1-olefin comprises at least 95 mole percent of the Cto Chydrocarbyl.5. The lubricating composition of claim 1 , wherein the 1-olefin comprises 100 mole percent of the Cto Chydrocarbyl.6. The lubricating composition of claim 1 , wherein the 1-olefin is a Cto Chydrocarbyl.7. The lubricating composition of claim 1 , wherein the acylated poly(1-olefin)-based dispersant is selected from a polyalphaolefin succinimide claim 1 , a polyalphaolefin succinamide claim 1 , a polyalphaolefin acid ester claim 1 , a polyalphaolefin oxazoline claim 1 , a polyalphaolefin imidazoline claim 1 , a polyalphaolefin succinamide imidazoline claim 1 , and combinations thereof.8. The lubricating composition of claim 1 , wherein the acylated poly(1-olefin)-based ...

LUBRICANT COMPOSITIONS FOR DIRECT INJECTION ENGINE

The invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and a boron-containing ashless dispersant. The ashless dispersant may be selected from succinimide compounds prepared from aliphatic or aromatic amines. 1. A method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine comprising supplying to the engine a lubricant composition comprising a base oil of lubricating viscosity and a boron-containing ashless dispersant.2. The method of claim 1 , wherein the engine is operated under a load with a brake mean effective pressure (BMEP) of greater than or equal to 10 bars.3. The method of claim 1 , wherein the engine is operated at speeds less than or equal to 3 claim 1 ,000 rpm.4. The method of claim 1 , wherein the engine is fueled with a liquid hydrocarbon fuel claim 1 , a liquid non-hydrocarbon fuel claim 1 , or mixtures thereof.5. The method of claim 4 , wherein the engine is fueled by natural gas claim 4 , liquefied petroleum gas (LPG) claim 4 , compressed natural gas (CNG) claim 4 , or mixtures thereof.6. The method of claim 1 , wherein the boron-containing ashless dispersant is a polyalkenyl dispersant derived from acylated polyisobutylene.7. The method of claim 1 , wherein the boron-containing ashless dispersant comprises a polyisobutylene succinimide compound.8. The method of claim 7 , wherein the polyisobutylene succinimide compound is prepared from an amine comprising one or more of aliphatic polyamines claim 7 , aromatic amines claim 7 , polyether amines claim 7 , and mixtures thereof.9. The method of claim 6 , wherein the acylated polyisobutylene is prepared by a chlorine process claim 6 , a thermal process claim 6 , a free radical polymerization process claim 6 , or combinations thereof.10. The method of claim 1 , wherein ...

LUBRICATING OIL COMPOSITION, LUBRICATING METHOD, AND TRANSMISSION

Provided are a lubricating oil composition containing a mineral oil (1) having a kinematic viscosity at 100° C. of 2 mm/s or more and less than 2.5 mm/s, and a polymethacrylate (2) having a functional group containing an oxygen atom in the molecule while having a specific structural, unit, which satisfies both high viscosity index and high shear stability, and a lubrication method and a transmission using the lubricating oil composition. 2. The lubricating oil composition according to claim 1 , wherein the functional group is a hydroxy group.3. The lubricating oil composition according to claim 1 , wherein the mass average molecular weight of the polymethacrylate is 5 claim 1 ,000 or more and 100 claim 1 ,000 or less.4. The lubricating oil composition according to claim 1 , wherein the content of the polymethacrylate is 1% by mass or more and 15% by mass or less based on the total amount of the composition.5. The lubricating oil composition according to claim 1 , having a kinematic viscosity at 100° C. of 4 mm/s or more and 7 mm/s or less.6. The lubricating oil composition according to claim 1 , having a viscosity index of 232 or more.7. The lubricating oil composition according to claim 1 , wherein the rate of change in kinematic viscosity at 40° C. of the composition claim 1 , as calculated according to the following method claim 1 , is 5% or less:Method for calculating rate of change in kinematic viscosity at 40° C.;{'sub': 1', '0', '0', '1', '0, 'with respect to an ultrasonically-treated composition obtained by irradiating a lubricating oil composition with ultrasonic waves for 60 minutes according to JASO M347-95 and an untreated lubricating oil composition, their kinematic viscosity at 40° C. (v, v) is measured according to JIS K2283:2000, and the rate of reduction ((v−v)/v×100) is referred to as the rate of change in kinematic viscosity at 40° C.'}8. The lubricating oil composition according to claim 1 , which is for transmissions.9. A lubrication method ...

TRANSMISSION LUBRICATING OIL COMPOSITION

Provided is a lubricating oil composition for a transmission having excellent gear properties, clutch properties, cooling properties, and electric insulating properties. The lubricating oil composition for a transmission preparing by blending (A) a base oil, (B) a viscosity index improver having a mass average molecular weight of 10,000 to 50,000, and (C-1) a polyamide and/or (C-2) a polyol ester, the base oil (A) including (A-1) a synthetic oil having a kinematic viscosity at 100° C. of 1.0 to 10.0 mm/s. 1: A lubricating oil composition for a transmission , which is prepared by blending:(A) a base oil,(B) a viscosity index improver having a mass average molecular weight of 10,000 to 50,000, and(C-1) a polyamide, (C-2) a polyol ester, or both,{'sup': '2', 'wherein the base oil (A) comprises (A-1) a synthetic oil having a kinematic viscosity at 100° C. of 1.0 to 10.0 mm/s.'}2: The lubricating oil composition for a transmission according to claim 1 , wherein the component (A-1) is a poly-α-olefin claim 1 , a hydrogenated product of a poly-α-olefin claim 1 , or both.3: The lubricating oil composition for a transmission according to claim 1 , wherein a blending amount of the component (A-1) is from 1.0 to 10.0% by mass on the basis of a total amount of the composition.4: The lubricating oil composition for a transmission according to claim 1 , wherein the component (B) is a poly(meth)acrylate.5: The lubricating oil composition for a transmission according to claim 1 , wherein a blending amount of the component (B) is from 1.0 to 20.0% by mass on the basis of a total amount of the composition.6: The lubricating oil composition for a transmission according to claim 1 , wherein the composition comprises the component (C-1) which is a reaction product between an amine compound and a carboxylic acid compound.7: The lubricating oil composition for a transmission according to claim 1 , wherein the composition comprises the component (C-2) which is a reaction product between a ...

SRT MATERIAL, COMPOSITE AND METHOD FOR PRODUCING THE SAME

Using an organic compound having a bottle brush structure, a material having softness and resilience and having excellent low-friction performance (SRT material) can be provided. Preferably, the SRT material contains a reinforcing filler, and may contain a lubricating liquid to be gelled. 1. An SRT material comprising an organic compound having a bottle brush structure.2. The SRT material according to claim 1 , containing claim 1 , as a second component claim 1 , any one or more of fibrous materials claim 1 , nonporous inorganic materials and substances having a three-dimensional polymer network structure.3. The SRT material according to claim 2 , satisfying at least one of the following (1) and (2):(1) the organic compounds having a bottle brush structure bond to each other via a covalent bond, an ionic bond, a hydrogen bond, a hydrophilic-lipophilic interaction or a phase separation structure,(2) the organic compound having a bottle brush structure and the second component bond to each other via a covalent bond, an ionic bond, a hydrogen bond, a hydrophilic-lipophilic interaction or a phase separation structure.4. The SRT material according to claim 1 , wherein the effective surface occupancy of the bottle brush structure is 1% or more.5. The SRT material according to claim 1 , containing the organic compound having a bottle brush structure in an amount of 10% by weight or more.6. The SRT material according to claim 1 , containing a lubricating liquid.7. The SRT material according to claim 1 , wherein the indentation is 100 nm or more and the compressive elasticity modulus is 1 MPa or more.8. The SRT material according to claim 1 , wherein the frictional coefficient (μ) is 0.1 or less.9. The SRT material according to claim 1 , which is in the form of a sheet.10. The SRT material according to claim 1 , which is for sliding mechanisms.11. A composite of an organic compound having a bottle brush structure and a reinforcing filler.12. The composite according to claim ...

LUBRICATING OIL COMPOSITION FOR INTERNAL COMBUSTION ENGINES AND METHOD FOR PRODUCING THE SAME

A lubricating oil composition for internal combustion engines, including a lubricant base oil and 3% by mass or more, but less than 40% by mass of a liquid random copolymer of ethylene and an α-olefin, the liquid random copolymer being produced using a specific catalyst, wherein the lubricating oil composition has a kinematic viscosity at 100° C. of 6.9 mm/s or more, but less than 12.5 mm/s, and wherein the lubricant base oil consists of a mineral oil having a kinematic viscosity at 100° C. of 2 to 7 mm/s, a viscosity index of 105 or more and a pour point of −10° C. or lower, and/or a synthetic oil having a kinematic viscosity at 100° C. of 1 to 7 mm/s, a viscosity index of 120 or more and a pour point of −30° C. or lower. 2. The lubricating oil composition for internal combustion engines according to claim 1 , wherein in the metallocene compound represented by the above Formula 1 claim 1 , at least one among substituents (R claim 1 , R claim 1 , Rand R) bonded to a cyclopentadienyl group claim 1 , is a hydrocarbon group having 4 or more carbon atoms.3. The lubricating oil composition for internal combustion engines according to claim 1 , wherein Rand R claim 1 , being the same claim 1 , are hydrocarbon groups having 1 to 20 carbon atoms.4. The lubricating oil composition for internal combustion engines according to claim 1 , wherein in the metallocene compound represented by the above Formula 1 claim 1 , substituent (Ror R) bonded to the 3-position of the cyclopentadienyl group is a hydrocarbon group.5. The lubricating oil composition for internal combustion engines according to claim 4 , wherein in the metallocene compound represented by the above Formula 1 claim 4 , the hydrocarbon group (Ror R) bonded to the 3-position of the cyclopentadienyl group is an n-butyl group.6. The lubricating oil composition for internal combustion engines according to claim 1 , wherein in the metallocene compound represented by the above Formula 1 claim 1 , substituents (Rand R) ...

LUBRICATING OIL COMPOSITION FOR AUTOMOBILE TRANSMISSION FLUIDS AND METHOD FOR PRODUCING THE SAME

A lubricating oil composition for automobile transmissions including a lubricant base oil, and a liquid random copolymer of ethylene and α-olefin, the liquid random copolymer being produced using a specific catalyst, wherein the lubricating oil composition has a kinematic viscosity at 100° C. of 4.0 to 7.5 mm/s, and a Brookfield viscosity at −40° C. of 20,000 mPa·s or less, and wherein the lubricant base oil consists of a mineral oil with a kinematic viscosity at 100° C. of 2 to 10 mm/s, a viscosity index of 105 or more, and a pour point of −10° C. or lower, and/or a synthetic oil with a kinematic viscosity at 100° C. of 1 to 10 mm/s, a viscosity index of 120 or more, and a pour point of −30° C. or lower. 2. The lubricating oil composition for automobile transmissions fluids according to claim 1 , wherein in the metallocene compound represented by the above Formula 1 claim 1 , at least one among substituents (R claim 1 , R claim 1 , Rand R) bonded to a cyclopentadienyl group is a hydrocarbon group having 4 or more carbon atoms.3. The lubricating oil composition for automobile transmissions fluids according to claim 1 , wherein Rand R claim 1 , being the same claim 1 , are hydrocarbon groups having 1 to 20 carbon atoms.4. The lubricating oil composition for automobile transmissions fluids according to claim 1 , wherein in the metallocene compound represented by the above Formula 1 claim 1 , substituent (Ror R) bonded to the 3-position of the cyclopentadienyl group is a hydrocarbon group.5. The lubricating oil composition for automobile transmissions fluids according to claim 4 , wherein in the metallocene compound represented by the above Formula 1 claim 4 , the hydrocarbon group (Ror R) bonded to the 3-position of the cyclopentadienyl group is an n-butyl group.6. The lubricating oil composition for automobile transmissions fluids according to claim 1 , wherein in the metallocene compound represented by the above Formula 1 claim 1 , substituents (Rand R) bonded to ...

High Viscosity Index Comb Polymer Viscosity Modifiers and Methods of Modifying Lubricant Viscosity Using Same

A comb copolymer viscosity modifier may be made by polymerization comprising at least, or consisting essentially of, the following monomers: (a) a hydrogenated polybutadiene-based (alk)acrylate ester macromonomer (which repeat units may comprise from 7.0 wt % to 18 wt % of the repeat units of the comb copolymer viscosity modifier); (b) a C-Calkyl (alk)acrylate ester monomer (which repeat units may comprise from 40 wt % to 71 wt % or from 45 wt % to 64 wt % of the repeat units of the comb copolymer viscosity modifier); and (c) a C-Calkyl (alk)acrylate ester monomer, wherein repeat units based on the C-Calkyl (alk)acrylate ester monomer comprise at least 21.0 wt % (and optionally up to 35.0 wt %) of repeat units of the comb copolymer viscosity modifier. Lubricant compositions comprising the comb copolymer viscosity modifier, as well as uses thereof and methods for modifying viscosity, are also contemplated herein. 2. The lubricant composition of claim 1 , wherein the comb copolymer viscosity modifier comprises substantially no repeat units based on styrene monomer claim 1 , and wherein repeat units based on the C-Calkyl (alk)acrylate ester monomer comprise up to 35.0 wt % of repeat units of the comb copolymer viscosity modifier.3. The lubricant composition of claim 1 , wherein repeat units based on the hydrogenated polybutadiene-based (alk)acrylate ester macromonomer comprise from 7.0 wt % to 18 wt % of the repeat units of the comb copolymer viscosity modifier.4. The lubricant composition of claim 1 , wherein repeat units based on the C-Calkyl (alk)acrylate ester monomer comprise from 40 wt % to 71 wt % of the repeat units of the comb copolymer viscosity modifier.5. The lubricant composition of claim 4 , wherein repeat units based on the C-Calkyl (alk)acrylate ester monomer comprise from 45 wt % to 64 wt % of the repeat units of the comb copolymer viscosity modifier.6. The lubricant composition of claim 1 , wherein:{'sub': 3', '8, '(i) the C-Calkyl (alk)acrylate ester ...

LUBRICATING OIL COMPOSITION FOR COMPRESSOR OILS AND METHOD FOR PRODUCING THE SAME

A lubricating oil composition for compressor oils, including 10 to 99% by mass of a lubricant base oil (A) having a kinematic viscosity at 100° C. of 1 to 14 mm/s, a viscosity index of 100 or more, and a pour point of 0° C. or lower, and 90 to 1% by mass of a liquid random copolymer ethylene-α-olefin copolymer (B) of ethylene and α-olefin, the liquid random copolymer ethylene-α-olefin copolymer (B) being prepared by means of a specific catalyst (where the total amount of (A) and (B) is 100% by mass), the lubricating oil composition for compressor oils having a kinematic viscosity at 40° C. of 10 to 300 mm/s. 2. A lubricating oil composition for compressors oils according to claim 1 , wherein in the metallocene compound represented by the above Formula 1 claim 1 , at least one among substituents (R claim 1 , R claim 1 , Rand R) bonded to a cyclopentadienyl group claim 1 , is a hydrocarbon group having 4 or more carbon atoms.3. A lubricating oil composition for compressors oils according to claim 1 , wherein Rand R claim 1 , being the same claim 1 , are hydrocarbon groups having 1 to 20 carbon atoms.4. A lubricating oil composition for compressors oils according to claim 1 , wherein in the metallocene compound represented by the above Formula 1 claim 1 , substituent (Ror R) bonded to the 3-position of the cyclopentadienyl group is a hydrocarbon group.5. A lubricating oil composition for compressors oils according to claim 4 , wherein in the metallocene compound represented by the above Formula 1 claim 4 , the hydrocarbon group (Ror R) bonded to the 3-position of the cyclopentadienyl group is an n-butyl group.6. A lubricating oil composition for compressors oils according to claim 1 , wherein in the metallocene compound represented by the above Formula 1 claim 1 , substituents (Rand R) bonded to the 2-position and 7-position of the fluorenyl group are all tert-butyl groups.8. A lubricating oil composition for compressors oils according to claim 7 , wherein the ammonium ...

Lubricating compositions having improved shear stability

A lubricating composition with improved shear stability having a kinematic viscosity (Kv 100 ) from 5 to 32.5 cSt at 100° C., and a viscosity index from 140 to 200. The lubricating composition includes: a bi-modal blend lubricating oil including from 20 to 99 weight percent of a low viscosity basestock having a Kv 100 from 2 to 8 cSt at 100° C., and from 1 to 20 weight percent of a high viscosity basestock having a Kv 100 from 40 to 600 cSt at 100° C.; a viscosity modifier including a copolymer having units derived from monomers of (i) an α-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof esterified with an alcohol; and an alkylated aromatic co-base stock in an amount from 1 to 8 weight percent and having a Kv 100 from 3 to 15 cSt at 100° C.

POLYETHER COMPOUND AND PRODUCTION METHOD THEREFOR

The present invention relates to a polyether compound having a halogen atom content of 0.1000% by mass or less in terms of a polymer molecule thereof as measured by combustion ion chromatography and a weight average molecular weight (Mw) of 140,000 or more and 1,000,000 or less. 1: A polyether compound having a halogen atom content of 0.1000% by mass or less in terms of a polymer molecule thereof as measured by combustion ion chromatography and a weight average molecular weight of 140 ,000 or more and 1 ,000 ,000 or less.2: The polyether compound according to claim 1 , wherein the polyether compound is represented by the formula (1):{'br': None, 'sup': 1', '2, 'sub': 'n', 'X\ue8a0RO\ue8a0R\u2003\u2003(1)'}{'sup': 1', '2, 'wherein X represents a halogen atom; each RO independently represents a constitutional unit derived from an oxirane monomer; Rrepresents a hydrogen atom, a hydrocarbon group having a number of carbon atoms of 1 or more and 10 or less, or an oxygen-containing hydrocarbon group having a number of carbon atoms of 1 or more and 10 or less; and'}n represents such an integer that the polyether compound has a weight average molecular weight of 140,000 or more and 1,000,000 or less.4: The polyether compound according to claim 1 , wherein the polyether compound has a weight average molecular weight of 160 claim 1 ,000 or more and 1 claim 1 ,000 claim 1 ,000 or less.5: The polyether compound according to claim 1 , wherein the polyether compound has a halogen atom only at a molecular end thereof.6: The polyether compound according to claim 2 , wherein the oxirane monomer is at least one selected from the group consisting of ethylene oxide claim 2 , propylene oxide claim 2 , 1 claim 2 ,2-epoxybutane claim 2 , 1 claim 2 ,2-epoxyisobutane claim 2 , and 2 claim 2 ,3-epoxybutane.7: The polyether compound according to claim 1 , wherein the polyether compound has a molecular weight distribution of 10.0 or less.8: A viscosity index improver claim 1 , comprising the ...

HYDRAULIC OIL COMPOSITION

The present invention provides a hydraulic oil composition comprising a lubricating base oil having a kinematic viscosity at 40° C. of 15 to 50 mm/s, a viscosity index of 125 or lower, and an aromatic content of 1% by mass or higher; and 1 to 40% by mass based on a total amount of the hydraulic oil composition of a polymethacrylate having a number-average molecular weight of 28000 or lower. 1. A hydraulic oil composition comprising:{'sup': '2', 'a lubricating base oil having a kinematic viscosity at 40° C. of 15 to 50 mm/s, a viscosity index of 125 or lower, and an aromatic content of 1% by mass or higher; and'}1 to 40% by mass based on a total amount of the hydraulic oil composition of a polymethacrylate having a number-average molecular weight of 28000 or lower.2. The hydraulic oil composition according to claim 1 , wherein the hydraulic oil composition has a ratio (A/B) of (A) a kinematic viscosity (unit: mm/s) at 80° C. to (B) a high shear viscosity (unit: mPa·s claim 1 , shear condition: 10/s) at 80° C. of 1.15 or lower. The present invention relates to a hydraulic oil composition.In recent years, energy-saving hydraulic oils have been developed as one of responses to global warming. There are some conventional energy-saving hydraulic oils allowing achieving the reduction of energy consumption of apparatuses at starting, for example, by decreasing their low-temperature viscosity.There are also developed energy-saving hydraulic oils whose viscosity change is made small by blending a viscosity index improver to thereby reduce energy consumption in the steady-state operation after the oil temperature is raised. In the energy-saving hydraulic oils, the oil leakage (internal leakage) from construction machines' characteristic various hydraulic apparatus interiors is prevented by making small the viscosity change (making the viscosity index high) of the hydraulic oils, and the reduction of the energy consumption is achieved (for example, see Patent Literatures 1 to 3 ...

Articles having low coefficients of friction, methods of making the same, and methods of use

Briefly described, embodiments of this disclosure include articles and methods of making articles.

LUBRICATING OIL FOR PRESS WORKING

A lubricating oil for press working contains a base oil and a fat or oil-containing additive and a calcium-containing additive added to the base oil. The proportion of the fat or oil-containing additive with respect to the whole volume of the lubricating oil for press working is 10 to 30%. The proportion of the calcium-containing additive with respect to the whole volume of the lubricating oil for press working is 5 to 15%. 1. A lubricating oil for press working , comprising:a base oil; anda fat or oil-containing additive and a calcium-containing additive added to the base oil, whereina proportion of the fat or oil-containing additive with respect to the whole volume of the lubricating oil for press working is 10 to 30%, anda proportion of the calcium-containing additive with respect to the whole volume of the lubricating oil for press working is 5 to 15%.2. The lubricating oil for press working according to claim 1 , wherein the calcium-containing additive comprises a calcium petroleum sulfonate.3. A lubricating oil for press working claim 1 , comprising:a base oil; anda fat or oil-containing additive and a sodium-containing additive added to the base oil, whereina proportion of the fat or oil-containing additive with respect to the whole volume of the lubricating oil for press working is 10 to 30%, anda proportion of the sodium-containing additive with respect to the whole volume of the lubricating oil for press working is 5 to 20%.4. The lubricating oil for press working according to claim 3 , wherein the sodium-containing additive comprises a sodium petroleum sulfonate.5. The lubricating oil for press working according to claim 1 , wherein the fat or oil-containing additive comprises a phosphate ester.6. The lubricating oil for press working according to claim 3 , wherein the fat or oil-containing additive comprises a phosphate ester. The present invention relates to a lubricating oil for press working.When workpieces such as separators for fuel cells are press ...

LUBRICANT COMPOSITION FOR SHOCK ABSORBERS, METHOD FOR PRODUCING SAME, DAMPING METHOD AND SHOCK ABSORBER

Provided are a lubricating oil composition for shock absorber, containing a base oil and a comb polymer having a mass average molecular weight of 5×10or more and 1×10or less, which has a high viscosity index and provides a shock absorber capable of keeping a damping force thereof substantially constant at any temperature and exhibiting excellent damping force characteristics; a method of producing the lubricating oil composition for shock absorber; a damping method; and a shock absorber. 1. A lubricating oil composition for shock absorber , the lubricating oil composition comprising a base oil and a comb polymer having a mass average molecular weight of 5×10or more and 1×10or less.2. The lubricating oil composition for shock absorber according to claim 1 , wherein a content of the comb polymer in terms of a resin component is 1% by mass or more and 10% by mass or less on the basis of a whole amount of the composition.3. The lubricating oil composition for shock absorber according to claim 1 , wherein a mass average molecular weight of the comb polymer is 3×10or more and 8×10or less.4. The lubricating oil composition for shock absorber according to claim 1 , wherein a kinematic viscosity at 40° C. of the base oil is 1 mm/s or more and 8 mm/s or less.5. The lubricating oil composition for shock absorber according to claim 1 , which has a kinematic viscosity at 40° C. of 5 mm/s or more and 35 mm/s or less.6. The lubricating oil composition for shock absorber according to claim 1 , which has a viscosity index of 380 or more.7. The lubricating oil composition for shock absorber according to claim 1 , which is adapted to function as a lubricating oil composition for a shock absorber of a two-wheeled vehicle.8. A shock absorber claim 1 , comprising the lubricating oil composition for shock absorber according to .9. A method of damping sways or vibrations claim 1 , the method comprising lubricating a shock absorber with the lubricating oil composition according to .10. A ...

Amino Acid Grafted Polymer with Soot Handling Properties

The present disclosure relates to lubricant additives such as dispersants and dispersant viscosity modifiers including acyl peptide grafted polymers and lubricating oil compositions comprising such additives. The disclosure also relates to the use of lubricant compositions comprising the additives herein for improving the soot or sludge handling characteristics of an engine lubricant composition and while minimizing the deterioration of engine's elastomer compatibility.

Lubricating Composition Containing a Self-Assembling Polymethacrylate Block Copolymer and an Ethylene-a-Olefin Copolymer

The invention provides a lubricating composition comprising an oil of lubricating viscosity and synergistic mixture of a functionalized ethylene-α-olefin copolymer, a poly(meth)acrylate block polymer having a substantially oil soluble block and a substantially oil insoluble block. The invention also provides a method of lubricating a mechanical device using such a lubricating composition. 1. A lubricating composition comprising(a) an oil of lubricating viscosity;(b) an ethylene-α-olefin copolymer, wherein the ethylene-α-olefin copolymer is grafted with a polar moiety; and{'sub': 1', '2, '(c) a poly(meth)acrylate polymer wherein the poly(meth)acrylate polymer comprises a block or tapered block copolymer (P) comprising a first block (B) which is substantially insoluble in the base oil and a second block (B) which is substantially soluble in the base oil.'}2. The lubricating composition of claim 1 , wherein the poly(meth)acrylate polymer comprises a linear polymer having a weight-average molecular weight of 10 claim 1 ,000 Da to 100 claim 1 ,000 Da.3. The lubricating composition of claim 1 , wherein the first block (B) comprises at least 50 mol % Cto C(meth)acrylate derived units.4. The lubricating composition of claim 1 , wherein the first block (B) consists essentially of Cto C(meth)acrylate derived units5. The lubricating composition of claim 1 , wherein the first block (B) comprises at least 50 mol % of an aromatic functional (meth)acrylate derived unit.6. The lubricating composition of claim 1 , wherein the and the second block (B) comprises at least 50 mol % Cto C(meth)acrylate derived units.7. The lubricating composition of claim 1 , wherein the second block (B) consists essentially of Cto C(meth)acrylate derived units.81. The lubricating composition claim 1 , wherein the first block (B) comprises at least 50 mol % at least two of C claim 1 , C claim 1 , Cor C(meth)acrylate derived units and the second block (B) comprises at least 50 mol % of at least two of C ...

Low viscosity ester lubricant and method for using

According to the present disclosure, there is provided a high-temperature lubricant composition. The composition has an amount of an ester. The ester exhibits a kinematic viscosity at 100° C. of 1 to 4 centistokes and a kinematic viscosity ratio at 150° C./100° C. of 0.6 or higher. The composition is at a temperature of 100° C. to 150° C. There is also another lubricating composition having the ester and a polymeric viscosity modifier. There are also methods for using the lubricating compositions in the crankcase of an engine.

COMPOSITION FOR USE IN OILS

A composition comprising a sheared antifoam solution/mixture with a mean particle size from about 0.01 microns to about 0.5 microns and a maximum particle size of less than about 1 micron. In this composition the sheared antifoam solution/mixture comprises antifoam solution/mixture comprising an antifoam and a base stock. 1. A composition comprising:a sheared antifoam mixture with a mean particle size from about 0.01 microns to about 0.5 microns and a maximum particle size of less than about 1 micron,wherein the sheared antifoam mixture comprises antifoam mixture comprising an antifoam and a base stock.2. The composition of claim 1 , wherein the antifoam is selected from the group consisting of: organo-modified siloxane claim 1 , silicone claim 1 , flurosilicone claim 1 , polyacrylate and combinations thereof.3. The composition of claim 1 , wherein the base stock is selected from the group consisting of: esters claim 1 , polyalkylene glycols claim 1 , alkylated naphthalenes claim 1 , polyalphaolefins claim 1 , petroleum mineral oils based on aromatic claim 1 , naphthenic or paraffinic crude oils claim 1 , or combinations thereof.4. The composition of claim 1 , wherein the antifoam mixture does not contain a solubilizing agent.5. The composition of claim 1 , wherein the amount of antifoam ranges from about 20 wt % to about 80 wt % of the antifoam mixture.6. The composition of claim 1 , wherein the amount of antifoam ranges from about 40 wt % to about 60 wt % of the antifoam mixture.7. The composition of claim 1 , wherein the amount of base stock ranges from about 20 wt % to about 80 wt % of the antifoam mixture.8. The composition of claim 1 , wherein the amount of base stock ranges from about 30 wt % to about 70 wt % of the antifoam mixture.9. The composition of claim 1 , wherein the amount of base stock ranges from about 40 wt % to about 60 wt % of the antifoam mixture.10. The composition of claim 1 , wherein the antifoam mixture is sheared with a shear device to ...

Lubricating oil composition

A lubricating oil composition with a resin (A) and a base oil (B), the resin (A) is in a range of 0.01 to 50 parts by mass per 100 parts of (A) and (B), the resin (A) satisfies the following requirements: (A-1) the resin (A) is a polymer including a constituent unit from 4-methyl-1-pentene in a range of 60 to 99 mol % and a constituent unit from an α-olefin having 2 to 20 carbon atoms (excluding 4-methyl-1-pentene) in a range of 1 to 40 mol % (provided that 4-methyl-1-pentene and the α-olefin is 100 mol %); (A-2) intrinsic viscosity [η] measured in decalin at 135° C. is in a range of 0.01 to 5.0 dl/g; (A-3) a melting point (Tm) is in a range of 110 to 150° C. as determined by DSC; and the base oil (B) has (B-1) kinematic viscosity at 100° C. is in a range of 1 to 50 mm 2 /s.

LUBRICANT COMPOSITIONS COMPRISING POLYMERIC DIPHENYLAMINE ANTIOXIDANTS

Disclosed in certain embodiments is a lubricating oil composition comprising an antioxidant polymer (e.g., oligomer) composition comprising repeat units of diphenylamine monomers of formula I 2. The lubricating oil composition according to claim 1 , comprising one or more components selected from the group consisting of other antioxidants claim 1 , antiwear additives claim 1 , viscosity index improvers claim 1 , detergents claim 1 , dispersants claim 1 , pour point depressants claim 1 , corrosion inhibitors claim 1 , metal deactivators claim 1 , seal compatibility additives claim 1 , antifoam agents claim 1 , inhibitors claim 1 , antirust additives claim 1 , and friction modifiers.3. The lubricating oil composition according to claim 1 , wherein the Mn of the polymer composition is from about 400 g/mol to about 5000 g/mol.4. The lubricating oil composition according to claim 1 , wherein R claim 1 , R claim 1 , Rand Rare each independently H or a linear or branched C-Calkyl.5. The lubricating oil composition according to claim 1 , wherein R is H.6. The lubricating oil composition according to claim 1 , wherein the polymer composition further comprises one or more monomers selected from the group consisting of other diphenylamines claim 1 , phenothiazines claim 1 , phenoxazines claim 1 , aminodiphenylamines claim 1 , methylenedianiline claim 1 , toluenediamine claim 1 , aminophenols claim 1 , alkylphenols claim 1 , thiophenols claim 1 , phenylenediamines claim 1 , quinolines claim 1 , phenyl pyridinediamines claim 1 , pyridinepyrimidinediamines and phenylpyrimidinediamines.7. The lubricating oil composition according to claim 1 , wherein the polymer composition comprises from about 10 mol % to about 99 mol % diphenylamine monomers.8. The lubricating oil composition according to claim 1 , wherein the polymer composition comprises <70 wt % residual monomers of formula I.9. The lubricating oil composition according to claim 1 , wherein the polymer composition comprises ...

REFRIGERATING MACHINE OIL

The present invention provides a refrigerating machine oil comprising: 2. The refrigerating machine oil according to claim 1 , wherein the lubricating base oil comprises at least one oxygen-containing oil selected from an ester and an ether.3. The refrigerating machine oil according to claim 2 , wherein the ester comprises an ester of polyhydric alcohol and carboxylic acid.4. The refrigerating machine oil according to claim 1 , wherein the refrigerating machine oil is used together with at least one refrigerant selected from a saturated fluorohydrocarbon refrigerant claim 1 , an unsaturated fluorohydrocarbon refrigerant claim 1 , a hydrocarbon refrigerant and a natural refrigerant.5. A working fluid composition for a refrigerating machine claim 1 , comprising:a refrigerant; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the refrigerating machine oil according to .'}6. The working fluid composition for a refrigerating machine according to claim 5 , wherein the refrigerant is at least one refrigerant selected from a saturated fluorohydrocarbon refrigerant claim 5 , an unsaturated fluorohydrocarbon refrigerant claim 5 , a hydrocarbon refrigerant and a natural refrigerant.7. A refrigerating machine claim 1 , comprising the refrigerating machine oil according to .8. A refrigerating machine claim 5 , comprising the working fluid composition for a refrigerating machine according to . The present invention relates to a refrigerating machine oil.A refrigerating machine such as a refrigerator, an automotive air conditioner, a room air conditioner, or a vending machine is provided with a compressor for circulation of a refrigerant within the refrigeration cycle. The compressor is filled with a refrigerating machine oil for lubrication of slide members. The refrigerating machine oil is required to have various properties in addition to lubricity such as antiwear property.One of properties required for a refrigerating machine oil is oil return performance, for example. As ...

METHACRYLIC COPOLYMER AND SOLUTION CONTAINING SAME

This invention provides A methacrylic copolymer (C) comprising 25 to 35 mass % of a methyl methacrylate unit (A), and 75 to 65 mass % of an alkyl methacrylate ester unit (B) containing an alkyl group having 10 to 36 carbon atoms, the methacrylic copolymer having (a) a weight average molecular weight of 10,000 to 500,000, (b) a molecular weight distribution (Mw/Mn) of 1.01 to 1.60, (c) a triad syndiotacticity (rr) of 65% or more, and (d) a solubility of 5.0 mass % or more at 0° C. in at least one lubricant base oil (D) selected from the group consisting of API groups III, III+, and IV. 1: A methacrylic copolymer (C) comprising:25 to 35 mass % of a methyl methacrylate unit (A); and75 to 65 mass % of an alkyl methacrylate ester unit (B) containing an alkyl group having 10 to 36 carbon atoms,the methacrylic copolymer having(a) a weight average molecular weight of 10,000 to 500,000,(b) a molecular weight distribution (Mw/Mn) of 1.01 to 1.60,(c) a triad syndiotacticity (rr) of 65% or more, and(d) a solubility of 5.0 mass % or more at 0° C. in at least one lubricant base oil (D) selected from the group consisting of API groups III, III+, and IV.2: The methacrylic copolymer according to claim 1 , wherein the methyl methacrylate unit (A) is present in an amount of 30 to 35 mass %.3: The methacrylic copolymer according to claim 1 , which has a weight average molecular weight of 20 claim 1 ,000 to 450 claim 1 ,000.4: The methacrylic copolymer according to claim 1 , comprising a combination of an alkyl methacrylate ester unit (B1) containing an alkyl group having 14 to 30 carbon atoms and an alkyl methacrylate ester unit (B2) containing an alkyl group having 10 to 13 carbon atoms claim 1 , as the alkyl methacrylate ester unit (B) containing an alkyl group having 10 to 36 carbon atoms claim 1 , and having a mass ratio of the alkyl methacrylate ester unit (B1)/the alkyl methacrylate ester unit (B2) of 10/90 to 90/10.5: The methacrylic copolymer according to claim 1 , which has a ...

ULTRA-FLUID LUBRICATING COMPOSITION

In the field of lubricating compositions for motor vehicles, there is disclosed a lubricating composition of a grade according to the SAEJ300 classification defined by the formula (X) W (Y) wherein X represents 0 or 5 and Y represents an integer ranging from 4 to 20. This lubricating composition includes at least one polyalphaolefinic oil (PAO), from 10 to 80% by weight of the composition of at least one oil of group V and at least one comb polymer. Also isclosed is the use of this lubricating composition for improving the Fuel Eco (FE) of a lubricant or for reducing the fuel consumption of an engine, in particular a motor vehicle engine, notably a motor of a hybrid vehicle. 118-. (canceled)20. The lubricant composition according to of a grade according to the SAEJ300 classification selected from among 0W4 claim 19 , 0W8 claim 19 , 0W12 claim 19 , 0W16 claim 19 , 0W20 claim 19 , 5W4 claim 19 , 5W8 claim 19 , 5W12 claim 19 , 5W16 claim 19 , 5W20.21. The lubricant composition according to claim 19 , for which the cinematic viscosity measured at 40° C. according to the ASTM D445 standard ranges from 12 to 30 mm.s.22. The lubricant composition according to for which the cinematic viscosity of the PAO claim 19 , measured at 100° C. according to the ASTM D445 standard claim 19 , ranges from 1.5 to 6 mm.sor from 2 to 8 mm.sor further from 2 to 6 mm.s.23. The lubricant composition according to for which the average molecular mass by weight of the PAO is less than 500 Da or ranges from 50 to 500 Da or ranges from 50 to 350 Da or from 50 to 300 Da.24. The lubricant composition according to comprising from 20 to 80% claim 19 , from 30 to 60% or from 35 to 45% by weight of the oil composition of group V.25. The lubricant composition according to claim 19 , for which the oil of group V is selected from among a monoester claim 19 , a polyalkylene-glycol (PAG).27. The lubricant composition according to claim 19 , for which the comb polymer for which the pendant chains are obtained ...

MICROBIAL OILS WITH LOWERED POUR POINTS, DIELECTRIC FLUIDS PRODUCED THEREFROM, AND RELATED METHODS

Methods and compositions for the production of dielectric fluids from lipids produced by microorganisms are provided, including oil-bearing microorganisms and methods of low cost cultivation of such microorganisms. Microalgal cells containing exogenous genes encoding, for example, a sucrose transporter, a sucrose invertase, a fructokinase, a polysaccharide-degrading enzyme, a lipid pathway modification enzyme, a fatty acyl-ACP thioesterase, a desaturase, a fatty acyl-CoA/aldehyde reductase, and/or an acyl carrier protein are useful in manufacturing dielectric fluids. 144-. (canceled)45ChlorellaPrototheca. A recombinant or cell engineered to ablate or downregulate expression of an endogenous fatty acyl-ACP thioesterase gene.46. The cell of claim 45 , wherein the endogenous fatty acyl-ACP thioesterase gene is downregulated by an inhibitory RNA.47ProtothecaChlorellaPrototheca moriformisChlorella protothecoides.. The cell of claim 45 , wherein the or cell is of the species or48ChlorellaPrototheca. The cell of claim 45 , wherein the or cell further comprises one or more exogenous genes that encode a sucrose invertase claim 45 , a fatty acyl-ACP thioesterase claim 45 , a desaturase claim 45 , or an inhibitory RNA that targets an endogenous desaturase.49. The cell of claim 48 , wherein the one or more expressed exogenous genes encode(s) an inhibitory RNA that targets an endogenous desaturase.50. The cell of claim 48 , wherein the one or more exogenous genes encode(s) sucrose invertase claim 48 , fatty acyl-ACP thioesterase or desaturase.51ProtothecaChlorellaPrototheca moriformisChlorella protothecoides.. The Cell of claim 50 , wherein the or is of the species or This application claims the benefit of prior U.S. provisional application No. 61/546,932, filed Oct. 13, 2011; prior U.S. provisional application No. 61/522,231, filed Aug. 10, 2011; prior U.S. provisional application No. 61/438,966, filed Feb. 2, 2011; prior U.S. provisional application No. 61/409,902, filed Nov. ...

Lubricating Composition Containing Viscosity Modifier Combination

The present invention relates to a lubricating composition containing (a) an oil of lubricating viscosity, (b) a star polymer and (c) a substantially linear polymer with a weight average molecular weight of 45,000 or less. The invention further provides a method of lubricating a mechanical device, typically a manual transmission with the lubricating composition. The invention further provides for the use of the lubricating composition to provide a number of benefits including lower operating temperatures and fuel economy.

Triblock Copolymer Concentrates for Lubricating Oil Compositions

A VM concentrate comprising: from about 60 to about 95 parts (and at least 50 wt %) of a diluent oil (e.g., having a KV100 of about 2 cSt to about 40 cSt); and from about 5 parts to about 40 parts (and at least 6.0 wt %) of a linear triblock copolymer characterized by the formula: D′-PA-D″; wherein D′ represents a block derived from diene, PA represents a block derived from monoalkenyl arene, D″ represents a block derived from diene, and the linear triblock copolymer is present in an amount effective to modify a lubricating kinematic viscosity at approximately 100° C. (KV100) of the concentrate, and wherein the KV100 of the concentrate is about 3000 cSt or less. The linear triblock copolymer may additionally or alternatively have a thickening efficiency span of at most 0.5. 2. A concentrate according to claim 1 , wherein the D′ and D″ dienes each individually comprise butadiene claim 1 , isoprene claim 1 , and mixtures thereof claim 1 , but are not identical to each other claim 1 , and wherein the D′ and D″ blocks am substantially hydrogenated after polymerization.3. A concentrate according to claim 1 , wherein the D′ and D″ dienes each individually comprise:(i) not more than about 3 wt % butadiene;(ii) at least about 97 wt % isoprene;(iii) both (i) and (ii).4. A concentrate according to claim 1 , wherein D′ has a number average molecular weight from about 62 claim 1 ,000 Daltons to about 150 claim 1 ,000 Daltons claim 1 , PA has a number average molecular weight from about 15 claim 1 ,000 Daltons to about 50 claim 1 ,000 Daltons claim 1 , and D″ has a number average molecular weight from about 5 claim 1 ,000 to about 80 claim 1 ,000 daltons.5. A concentrate according to claim 4 , wherein:(i) D′ has a number average molecular weight from about 63,000 Daltons to about 95,000 Daltons;(ii) PA has a number average molecular weight from about 20,000 Daltons to about 36,000 Daltons; or(iii) both (i) and (ii).6. A concentrate according to claim 4 , wherein a ratio of PA ...

LUBRICANT COMPOSITION

The present invention provides a non-aqueous lubricant composition comprising a base stock and 5 at least 0.02 wt % of a friction reducing additive which comprises a block co-polymer of at least one block A which is an oligo- or polyester residue of a hydroxycarboxylic acid and at least one block B which is a residue of a polyalkylene glycol. The invention also provides the use of a block co-polymer of at least one block A which is an oligo- or polyester residue of a hydroxycarboxylic acid and at least one block B which is a residue of a polyalkylene glycol to reduce the kinetic co-efficient of friction in a non-aqueous lubricant composition when compared to an equivalent lubricant composition comprising no block co-polymer. 1. A non-aqueous lubricant composition comprising:a base stock; andat least 0.02 wt % of a friction reducing additive which comprises a block co-polymer of at least one block A which is an oligo- or polyester residue of a hydroxycarboxylic acid and at least one block B which is a residue of a polyalkylene glycol.2. A non-aqueous lubricant composition as claimed in wherein the hydroxycarboxylic acid is a hydroxystearic acid.3. A non-aqueous lubricant composition as claimed in wherein the polyalkylene glycol is a polyethylene glycol4. A non-aqueous lubricant composition as claimed in claim 1 , wherein the molecular weight of the block A is in the range 1000 to 2500.5. A non-aqueous lubricant composition as claimed in wherein the molecular weight of the block B is in the range 400 to 4600.6. A non-aqueous lubricant composition as claimed in wherein the number average molecular weight of the block co-polymer is in the range 3000 to 5000.7. A non-aqueous lubricant composition as claimed in wherein the block co-polymer has the structure AB or ABA.8. A non-aqueous lubricant composition as claimed in wherein the block co-polymer has an HLB value of at least 6.5.9. A non-aqueous lubricant composition as claimed in wherein the base stock is selected from ...

LUBRICATING OIL COMPOSITION, VISCOSITY MODIFIER FOR LUBRICATING OIL, AND ADDITIVE COMPOSITION FOR LUBRICATING OIL

An object of the present invention is to provide a lubricating oil composition particularly excellent in viscosity characteristics at a low temperature. The present invention provides: a lubricating oil composition including a polymer (A) and a base oil (B), wherein the polymer (A) satisfies the following requirement (A-1), and the content ratio of the polymer (A) and the base oil (B) is such that the ratio of a resin (A) is within the range of from 0.1 to 50 parts by mass with respect to 100 parts by mass of the total amount of the polymer (A) and the base oil (B). (A-1) The polymer (A) is a polymer containing a structural unit derived from an α-olefin having 20 or less carbon atoms. 1. A lubricating oil composition comprising a polymer (A) and a base oil (B) ,wherein the polymer (A) satisfies the following requirement (A-1):(A-1) the polymer (A) is a polymer containing a structural unit derived from an α-olefin having 20 or less carbon atoms; andwherein the content ratio of the polymer (A) and the base oil (B) is such that the ratio of the polymer (A) is within the range of from 0.1 to 50 parts by mass with respect to 100 parts by mass of the total amount of the polymer (A) and the base oil (B).2. A lubricating oil composition comprising: a resin (A1) containing the polymer (A) recited in ; and a base oil (B);wherein the resin (A1) satisfies the following requirements (A-2) to (A-4):(A-2) the resin (A1) has an intrinsic viscosity [η] as measured in decalin at 135° C. of within the range of from 0.01 to 5.0 dl/g;(A-3) the resin (A1) has a melting point (Tm) as measured by differential scanning calorimetry (DSC) of less than 110° C., or has no detected melting point (Tm); and(A-4) the resin (A1) has a glass transition temperature (Tg) as measured by differential scanning calorimetry (DSC) of within the range of from −10 to 50° C.; [{'sup': '2', '(B-1) the base oil (B) has a kinematic viscosity at 100° C. of within the range of from 1 to 50 mm/s; and'}, 'wherein the ...

High Viscosity Index Comb Copolymer Viscosity Modifiers and Methods of Modify Lubricant Viscosity Using Same

A comb copolymer viscosity modifier may be made by polymerization comprising at least, or consisting essentially of, the following monomers: (a) a hydrogenated polybutadiene-based (alk)acrylate ester macromonomer (which repeat units may comprise from 7.0 wt % to 18 wt % of the repeat units of the comb copolymer viscosity modifier); (b) a C-Calkyl (alk)acrylate ester monomer (which repeat units may comprise from 40 wt % to 71 wt % or from 45 wt % to 64 wt % of the repeat units of the comb copolymer viscosity modifier); and (c) a C-Calkyl (alk)acrylate ester monomer, wherein repeat units based on the C-Calkyl (alk)acrylate ester monomer comprise at least 21.0 wt % (and optionally up to 35.0 wt %) of repeat units of the comb copolymer viscosity modifier. Lubricant compositions comprising the comb copolymer viscosity modifier, as well as uses thereof and methods for modifying viscosity, are also contemplated herein. 1. A lubricant composition comprising:a lubricating oil basestock;a lubricant additive comprising one or more of an antioxidant, a corrosion inhibitor, an anti-wear additive, a friction modifier, a dispersant, a detergent, a defoaming agent, an extreme pressure additive, a pour point depressant, and a seal-swelling control agent; anda comb copolymer viscosity modifier made by polymerization comprising at least the following monomers:(a) a hydrogenated polybutadiene-based (alk)acrylate ester macromonomer;{'sub': 3', '8, '(b) a C-Calkyl (alk)acrylate ester monomer; and'}{'sub': 2', '24', '12', '24, '(c) a C-Calkyl (alk)acrylate ester monomer, wherein repeat units based on the C-Calkyl (alk)acrylate ester monomer comprise at least 21.0 wt % of repeat units of the comb copolymer viscosity modifier.'}2. The lubricant composition of claim 1 , wherein the comb copolymer viscosity modifier comprises substantially no repeat units based on styrene monomer claim 1 , and wherein repeat units based on the C-Calkyl (alk)acrylate ester monomer comprise up to 35.0 wt % of ...

High Viscosity Index Comb Copolymer Viscosity Modifiers and Methods of Modifying Lubricant Viscosity Using Same

A comb copolymer viscosity modifier may be made by polymerization comprising at least, or consisting essentially of, the following monomers: (a) (optionally from 7.0 wt % to 18 wt %, by repeat units, of) a hydrogenated polybutadiene-based (alk)acrylate ester macromonomer; (b) (optionally from 33 wt % to 64 wt %, by repeat units, of) a C-Calkyl (alk)acrylate ester monomer; (c) a C-Calkyl (alk)acrylate ester monomer; and (d) (optionally from 3.0 wt % to 25 wt %, by repeat units, of) H-endcapped, C-Calkyl-endcapped, or C-Caryl-, aralkyl-, or alkaryl-endcapped C-Coxyalkyl or C-Coligo(alkylene glycol)-based (alk)acrylate ester monomer, wherein repeat units based on monomer (c) and/or monomer (d) comprise at least 21.0 wt % (and optionally up to 35.0 wt %) of repeat units of the comb copolymer viscosity modifier. Lubricant compositions comprising the comb copolymer viscosity modifier, as well as uses thereof and methods for modifying viscosity and dispersancy, are also contemplated. 2. The lubricant composition of claim 1 , wherein:the comb copolymer viscosity modifier comprises substantially no repeat units based on styrene monomer;{'sub': 12', '24, 'repeat units based on the C-Calkyl (alk)acrylate ester monomer comprise up to 35.0 wt % of repeat units of the comb copolymer viscosity modifier; and'}{'sub': 1', '18', '6', '20', '2', '6', '2', '6, 'repeat units based on the C-Calkyl-endcapped or C-Caryl-, aralkyl-, or alkaryl-endcapped C-Coxyalkyl or C-Coligo(alkylene glycol)-based (alk)acrylate ester monomer and/or hydroxyalkyl or H-endcapped oligo(alkylene glycol)-based (alk)acrylate monomer comprise up to 25 wt % of the repeat units of the comb copolymer viscosity modifier.'}3. The lubricant composition of claim 1 , wherein:(i) repeat units based on the hydrogenated polybutadiene-based (alk)acrylate ester macromonomer comprise from 7.0 wt % to 18 wt % of the repeat units of the comb copolymer viscosity modifier;{'sub': 3', '8, '(ii) repeat units based on the C-Calkyl ( ...

Use Of Carboxylic Acid Esters As Lubricants

The presently claimed invention is directed to the use of carboxylic acid esters which are obtained by reacting aliphatic dicarboxylic acids and a mixture of structurally different monoalcohols having 10 carbon atoms as lubricants and a process for their preparation. 2. The lubricant composition of claim 1 , wherein the aliphatic dicarboxylic acid is selected from the group consisting of glutaric acid claim 1 , diglycolic acid claim 1 , succinic acid claim 1 , azelaic acid claim 1 , sebacic acid claim 1 , 1 claim 1 ,4-cyclohexanedicarboxylic acid claim 1 , adipic acid claim 1 , 2 claim 1 ,6-decahydronaphthalenedicarboxylic acid claim 1 , 1 claim 1 ,3-cyclohexanedicarboxylic acid claim 1 , and 2 claim 1 ,5-norbornanedicarboxylic acid.3. The lubricant composition of claim 1 , wherein the aliphatic dicarboxylic acid is adipic acid.4. The lubricant composition of claim 1 , wherein the monoalcohols b1) and b2) are present in a molar ratio in the range of 1.05:1 to 2.0:1 in relation to the acid a).5. The lubricant composition of claim 1 , wherein a weight ratio of monoalcohol b1) to monoalcohol b2) is in the range of 5:1 to 95:1.6. The lubricant composition of claim 1 , wherein Ris pentyl claim 1 , Ris H claim 1 , and Ris propyl.7. The lubricant composition of claim 1 , wherein Ris 2-methyl-butyl claim 1 , Ris H claim 1 , and Ris propyl.9. The lubricant composition of obtainable by reacting a mixture comprising adipic acid claim 1 , 2-propyl-heptanol claim 1 , 2-propyl-4-methyl-hexanol and 2-propyl-5-methyl-hexanol.11. The lubricant composition of further comprising one or more additives selected from the group consisting of polymer thickeners claim 1 , viscosity index (VI) improvers claim 1 , antioxidants claim 1 , corrosion inhibitors claim 1 , detergents claim 1 , dispersants claim 1 , demulsifiers claim 1 , defoamers claim 1 , dyes claim 1 , wear protection additives claim 1 , EP (extreme pressure) additives claim 1 , AW (antiwear) additives claim 1 , and friction ...

High Viscosity Index Comb Polymer Viscosity Modifiers and Methods of Modifying Lubricant Viscosity Using Same

A comb copolymer viscosity modifier may be made by polymerization comprising at least, or consisting essentially of, the following monomers: (a) (optionally from 7.0 wt % to 18 wt %, by repeat units, of) a hydrogenated polybutadiene-based (alk)acrylate ester macromonomer; (b) (optionally from 33 wt % to 64 wt %, by repeat units, of) a C-Calkyl (alk)acrylate ester monomer; (c) a C-Calkyl (alk)acrylate ester monomer; and (d) (optionally from 3.0 wt % to 25 wt %, by repeat units, of) H-endcapped, C-Calkyl-endcapped, or C-Caryl-, aralkyl-, or alkaryl-endcapped C-Coxyalkyl or C-Coligo(alkylene glycol)-based (alk)acrylate ester monomer, wherein repeat units based on monomer (c) and/or monomer (d) comprise at least 21.0 wt % (and optionally up to 35.0 wt %) of repeat units of the comb copolymer viscosity modifier. Lubricant compositions comprising the comb copolymer viscosity modifier, as well as uses thereof and methods for modifying viscosity and dispersancy, are also contemplated. 2. The lubricant composition of claim 1 , wherein:the comb copolymer viscosity modifier comprises substantially no repeat units based on styrene monomer;{'sub': 12', '24, 'repeat units based on the C-Calkyl (alk)acrylate ester monomer comprise up to 35.0 wt % of repeat units of the comb copolymer viscosity modifier; and'}{'sub': 1', '18', '6', '20', '2', '6', '2', '6, 'repeat units based on the C-Calkyl-endcapped or C-Caryl-, aralkyl-, or alkaryl-endcapped C-Coxyalkyl or C-Coligo(alkylene glycol)-based (alk)acrylate ester monomer and/or hydroxyalkyl or H-endcapped oligo(alkylene glycol)-based (alk)acrylate monomer comprise up to 25 wt % of the repeat units of the comb copolymer viscosity modifier.'}3. The lubricant composition of claim 1 , wherein:(i) repeat units based on the hydrogenated polybutadiene-based (alk)acrylate ester macromonomer comprise from 7.0 wt % to 18 wt % of the repeat units of the comb copolymer viscosity modifier;{'sub': 3', '8, '(ii) repeat units based on the C-Calkyl ( ...

LUBRICATING OIL COMPOSITIONS AND METHODS OF USE

This disclosure relates to a method for improving air release and water separation in a lubricating oil. The method involves formulating a composition comprising at least one lubricating oil base stock as a major component, and one or more lubricating oil additives, as a minor component. The one or more lubricating oil additives include a mixture of antifoam agents. The mixture of antifoam agents includes at least one polysiloxane and at least one acrylate polymer. During operation of a lubricating system containing the lubricating oil, release of entrained air in the lubricating oil is improved, as determined by ASTM D-3427-15, and water separation from the lubricating oil is improved, as determined by ASTM D-1401-18b, as compared to release of entrained air and water separation achieved using a lubricating oil containing other than the mixture of antifoam agents. This disclosure also relates to lubricating oils having a mixture of antifoam agents including at least one polysiloxane and at least one acrylate polymer. 1. A lubricating oil having a composition comprising: at least one lubricating oil base stock as a major component; and one or more lubricating oil additives , as a minor component; wherein the one or more lubricating oil additives comprise a mixture of antifoam agents; wherein the mixture of antifoam agents comprises at least one polysiloxane and at least one acrylate polymer; wherein the polysiloxane has a kinematic viscosity (KV) less than about 20 ,000 cSt at 25° C. as determined by ASTM D-445-19; wherein the at least one polysiloxane is present in an amount from about 0.1 to less than about 30 ppm , calculated as content of Si; wherein the at least one acrylate polymer is present in an amount less than about 60 times the amount of the at least one polysiloxane , calculated as content of Si (ppm); wherein , during operation of a lubricating system containing the lubricating oil , release of entrained air in the lubricating oil is improved , as ...

COMPOSITION FOR LOW TEMPERATURE

Lubricant composition comprising a dicarboxylic acid ester component which is formed from a dicarboxylic acid selected from the list consisting of adipic acid, phthalic acid, pimilic acid, suberic acid, azelaic acid and sebacic acid, and mixtures thereof and a branched aliphatic alcohol R—OH which is defined according to the following formula (I) 110.-. (canceled)11. A lubricant composition comprisinga) a dicarboxylic acid ester component which is di-(2-propylheptyl)adipate (DPHA), andb) an ethylene-propylene copolymer,wherein the ratio of the dicarboxylic acid ester component to the ethylene propylene copolymer is in the range of from 2:1 to 19:1 based on the relative weight of these components in the lubricant composition.12. The lubricant composition according to claim 11 , wherein the lubricant composition has a kinematic viscosity according to industrial standard DIN 51562-1 of not more than 1600 mm/s at −30° C. and of at least 7.5 mm/s at 100° C.13. The lubricant composition according to claim 11 , having a viscosity index according to the industrial standard DIN ISO 2909 of at least 160.14. The lubricant composition according to claim 11 , wherein the dicarboxylic acid ester has a kinematic viscosity according to DIN 51562-1 in the range of 2 to 15 mm/s at 100° C.15. The lubricant composition according to claim 11 , wherein the ethylene-propylene copolymer has a kinematic viscosity according to JIS K 2283 at 100° C. in the range of from 1000 to 2200 mm/s.16. The lubricant composition according to claim 11 , further comprising a base oil component having a kinematic viscosity according to DIN 51562-1 at 100° C. in the range of from 1 to 5 mm/s.17. The lubricant composition according to claim 11 , further comprising a monocarboxylic acid ester.18. Lubricant composition according to claim 17 , wherein the monocarboxylic acid ester is selected from the list consisting of 2-ethylhexyloleate claim 17 , 2-ethylhexylcocoate claim 17 , 2-ethylhexylpalmitate claim 17 , ...

VISCOSITY INDEX IMPROVER AND LUBRICANT COMPOSITIONS THEREOF

The invention relates to a poly alkyl(meth)acrylate polymer comprising polybutadiene-based monomer units and a process for preparing the same. The invention also relates to the use of said polymer as a viscosity index improver in lubricant formulation and to lubricant compositions comprising said polymer. 2. The poly alkyl(meth)acrylate polymer according to claim 1 , wherein the poly alkyl(meth)acrylate polymer has a weight-average molecular weight (M) from 70 claim 1 ,000 to 200 claim 1 ,000 g/mol.3. The poly alkyl(meth)acrylate polymer according to claim 1 , wherein the amounts of monomers a) and b) sum up to at least 70% by weight claim 1 , based on the total weight of the monomer composition.4. The poly alkyl(meth)acrylate polymer according to claim 1 , wherein the polybutadiene-based macromonomer a) has a number-average molecular weight of from 1 claim 1 ,000 to 6 claim 1 ,000 g/mol.5. The poly alkyl(meth)acrylate polymer according to claim 1 , wherein the monomer composition further comprises from 0 to 30% by weight of one or more monomer c) selected from the group consisting of methyl (meth)acrylate claim 1 , butyl (meth)acrylate or a mixture thereof claim 1 , based on the total weight of the monomer composition.6. The poly alkyl(meth)acrylate polymer according to claim 1 , wherein the monomer composition further comprises from 0 to 30% by weight of one or more monomer d) having from 8 to 17 carbon atoms selected from a group consisting of styrene or a substituted styrene having an alkyl substituent in the side chain.7. The poly alkyl(meth)acrylate polymer according to claim 1 , wherein the monomer composition further comprises from 0 to 15% by weight of one or more monomer e) selected from linear or branched Cto Calkyl(meth)acrylates claim 1 , preferably from linear or branched Cto Calkyl(meth)acrylates or a mixture thereof claim 1 , based on the total weight of the monomer composition.8. The poly alkyl(meth)acrylate polymer according to claim 1 , wherein ...

Lubricating oil compositions

wherein the number of repeat units (n) in the polymer is an integer between 4 and 1000, such as between 4 and 500. The polymer carries an inorganic or organic nucleophilic polymerisation terminating group (t), and an initiator group (i) connected to the N atom of a repeat unit, the initiator group (i) being effective to initiate the polymerisation of linear, branched or cyclic hydrocarbyl moieties. At least 5% of the total number of the groups R1 in the polymer comprise alkenyl groups having between 15 and 20 carbon atoms.

LUBRICATING OIL ADDITIVES

A lubricating composition comprises a major amount of an oil of lubricating viscosity and 0.01 to 25 percent by mass, based on the mass of the composition of an oil-soluble copolymer, The copolymer comprises units (a) and units (b): 1. A lubricating composition comprising a major amount of an oil of lubricating viscosity and 0.01 to 25 percent by mass , based on the mass of the composition of an oil-soluble copolymer comprising units (a) and units (b):{'br': None, 'sup': '1', 'sub': 2', '2, '—N(COR)CHCH—\u2003\u2003(a)'}{'br': None, 'sup': '2', 'sub': 2', '2', '2, '—N(COR)CHCHCH—\u2003\u2003(b)'}wherein the polymer carries an inorganic or organic nucleophilic polymerisation terminating group (t), and an initiator group (i) connected to the N atom of a repeat unit (a) or (b), the initiator group (i) being effective to initiate the polymerisation of linear, branched or cyclic hydrocarbyl moieties; and{'sup': 1', '2, 'wherein Rand Rare the same or different and comprise a single or a mixture of linear, branched or cyclic hydrocarbyl groups having 1-50 carbon atoms, some or all having 12-50 carbon atoms, or of at least one macro-monomeric hydrocarbyl group with more than 50 carbon atoms.'}2. A lubricating composition according to wherein units (a) comprise from 1 to 99 mol% of the copolymer and units (b) comprise from 1 to 99 mol% of the copolymer.3. A lubricating composition according to wherein the copolymer comprises 50 mol % of units (a) and 50 mol % of units (b).4. A lubricating composition according to claim I wherein the copolymer is a statistical copolymer or a random copolymer.5. A lubricating composition according to wherein the copolymer is an alternating copolymer claim 1 , a periodic copolymer or a block copolymer.6. A lubricating composition according to wherein the copolymer has a linear architecture.7. A lubricating composition according to wherein the copolymer has a branched or star architecture.8. A lubricating composition according to wherein Rand ...

ASSOCIATIVE AND EXCHANGEABLE OLIGOMERS, AND COMPOSITION COMPRISING SAME

Compositions resulting from the mixing of at least one oligomer A1, resulting from the copolymerization of at least one monomer functionalized by diol functions with at least a second monomer, and at least one compound A2 including at least two boronic ester functions. The compositions exhibit very varied rheological properties, depending on the proportion of the compounds A1 and A2 used. A composition also results from mixing at least one lubricating oil with such a composition of associative and exchangeable polymers, and to the use of this composition to lubricate a mechanical part. 111-. (canceled)13. The composition as claimed in claim 12 , in which the oligomer A1 has a number-average molar mass ranging from 600 g/mol to 4900 g/mol.14. The composition as claimed in claim 12 , in which the monomer M3 is styrene.15. The composition as claimed in claim 12 , in which the side chains of the oligomer A1 have a mean length ranging from 8 to 20 carbon atoms.16. The composition as claimed in claim 12 , in which the oligomer A1 has a molar percentage of repeating units corresponding to the monomer M1 of formula (I) ranging from 2% to 70%17. The composition as claimed in claim 12 , in which the oligomer A1 has a number-average degree of polymerization ranging from 3 to 100.18. The composition as claimed in claim 12 , in which the oligomer A1 has a polydispersity index (Ip) ranging from 1.05 to 4.0.21. The composition as claimed in claim 20 , in which the oligomer A2 has a number-average molar mass ranging from 600 g/mol to less than 10 000 g/mol.22. The composition as claimed in claim 20 , in which the oligomer A2 has a molar percentage of monomer M4 of formula (IV) in said oligomer ranging from 4% to 50%.23. The composition as claimed in claim 20 , in which claim 20 , the chain formed by the sequence of groups R claim 20 , M claim 20 , X and (R)with u equal to 0 or 1 of the monomer of formula (IV) has a total number of carbon atoms ranging from 8 to 38.24. The ...

LUBRICATING MEMBERS HAVING HYDROPHOBIC COMPONENTS FOR RAZOR CARTRIDGES

The invention relates to a solid compressed lubricating member for a razor cartridge comprising from 10% to 90% by weight of a particulate material comprising water soluble polymer and from 12% to 40% by weight of a hydrophobic compound or mixtures thereof; wherein at least a portion of said water soluble polymer particulate is spray coated with said hydrophobic compound and methods of manufacture thereof. 1. A solid compressed lubricating member for a razor cartridge comprising:i) from 10% to 90% by weight of a particulate material comprising a water soluble polymerii) from 12% to 40% by weight of a hydrophobic compound or mixtures thereof;wherein at least a portion of said water soluble polymer is spray coated with said hydrophobic compound.2. The solid compressed lubricating member for a razor cartridge according to claim 1 , wherein said lubricating member comprises from 12% to 30% by weight of said hydrophobic compound.3. The solid compressed lubricating member for a razor cartridge according to claim 1 , wherein said hydrophobic compound or mixtures thereof are selected from the group consisting of natural claim 1 , synthetic and silicone oils and or waxes and mixtures thereof; trigylcerides claim 1 , skin active agents claim 1 , sensates and mixtures thereof.4. The solid compressed lubricating member for a razor cartridge according to claim 1 , wherein said hydrophobic compound or mixtures thereof comprises capric and or caprylic triglycerides claim 1 , grape seed oil claim 1 , olive oil claim 1 , phenylated silicones claim 1 , shea butter claim 1 , cocoa butter claim 1 , lanolin claim 1 , essential oils claim 1 , peppermint oil claim 1 , isohexadecane claim 1 , petrolatum claim 1 , dimethicones and or mixtures thereof.5. The solid compressed lubricating member for a razor cartridge according to claim 1 , wherein said hydrophobic compound has a water solubility of 1 part to 1000 parts or greater claim 1 , preferably 10000 parts or greater of water.6. The ...

LUBRICATING MEMBERS FOR RAZOR CARTRIDGES

The invention relates to a solid compressed lubricating member for a razor cartridge comprising from 10% to 90% by weight of a particulate material comprising water soluble polymer and from 1% to 40% by weight of a silicone polymer or mixtures thereof; wherein at least a portion of said water soluble polymer particulate is spray coated with said silicone polymer and methods of manufacture thereof. 1. A solid compressed lubricating member for a razor cartridge comprising:i) from 10% to 90% by weight of a particulate material comprising a water soluble polymer andii) from 1% to 40% by weight of a silicone polymer or mixtures thereof;wherein at least a portion of said water soluble polymer is spray coated with said silicone polymer compound.2. The solid compressed lubricating member for a razor cartridge according to claim 1 , wherein said lubricating member comprises from 10% to 40% claim 1 , by weight of said silicone polymer or mixture thereof.3. The solid compressed lubricating member for a razor cartridge according to claim 1 , wherein said silicone polymer or mixtures thereof are selected from dimethicones claim 1 , cyclomethicones claim 1 , phenyl trimethicones claim 1 , trimethyl pentaphenyl trisiloxane claim 1 , phenylated silicones and or mixtures thereof.4. The solid compressed lubricating member for a razor cartridge according to claim 1 , further comprising a hydrophobic compound or mixtures thereof claim 1 , wherein said hydrophobic compound or mixtures thereof is selected from natural oil or wax claim 1 , synthetic oil or wax claim 1 , trigylcerides claim 1 , skin active agents claim 1 , senates and mixtures thereof.5. The solid compressed lubricating member for a razor cartridge according to claim 4 , wherein said hydrophobic compound or mixtures thereof comprises capric and or caprylic triglycerides claim 4 , grape seed oil claim 4 , olive oil claim 4 , shea butter claim 4 , cocoa butter claim 4 , lanolin claim 4 , essential oils claim 4 , peppermint ...

GRADIENT COPOLYMER, ITS PRODUCTION AND APPLICATION THEREOF

A gradient copolymer comprises or consists of n polymer components. The n polymer components each independently represents an addition polymer of a monomer of the formula (I), 128-. (canceled)31. The gradient copolymer according to claim 29 , wherein the gradient copolymer has an average number of carbon atoms in side chain as determined according to the nuclear magnetic resonance method within a range from 5 to 20 claim 29 , preferably from 11.5 to 17 claim 29 , preferably from 11.5. to 16.2 claim 29 , more preferably from 12.2 to 15.7 claim 29 , more preferably from 12.2 to 15.5 claim 29 , or the number average molecular weight Mn of the n polymer components or the gradient copolymer is each independently from 10 claim 29 ,000 to 1 claim 29 ,000 claim 29 ,000 claim 29 , preferably from 10 claim 29 ,000 to 500 claim 29 ,000 claim 29 , more preferably from 10 claim 29 ,000 to 100 claim 29 ,000 claim 29 , or the molecular weight distribution Mw/Mn of the n polymer components or the gradient copolymer is each independently from 1.8 to 3.5 claim 29 , preferably from 1.9 to 3.3.32. The gradient copolymer according to claim 29 , wherein the monomer of the formula (I) is one or more selected from the group consisting of Clinear alkyl (meth)acrylates claim 29 , Clinear alkyl (meth)acrylates claim 29 , Clinear alkyl (meth)acrylates claim 29 , Clinear alkyl (meth)acrylates claim 29 , Clinear alkyl (meth)acrylates claim 29 , Clinear alkyl (meth)acrylates claim 29 , Clinear alkyl (meth)acrylates claim 29 , and Clinear alkyl (meth)acrylates.33. The gradient copolymer according to claim 29 , wherein the proportion (by mole) of the one or more structural units represented by the formula (I-1) claim 29 , in which the group Rrepresents a C-Clinear or branched alkyl group claim 29 , relative to the total amount of the structural units constituting each of the n polymer components is from 40% to 95% claim 29 , preferably from 55% to 95%.34. The gradient copolymer according to claim ...

SILICONE FUNCTIONLIZED VISCOSITY INDEX IMPROVER

A multi-functional olefin copolymer viscosity index improver and a lubricating oil composition including such lubricant additive that provides improved viscometric properties and helps reduce low speed pre-ignition events at the same time. In one approach, the multi-functional olefin copolymer viscosity index improver is silicone functionalized and includes an acylated olefin copolymer with aminosilane or aminosiloxone pendant or side groups. 1. A multi-functional olefin copolymer viscosity index improver comprising an acylated olefin copolymer with aminosilane pendant groups , the acylated olefin copolymer including an olefin copolymer backbone with grafted acylating moieties thereon linking the aminosilane pendant groups to the olefin copolymer backbone.2. The multi-functional olefin copolymer viscosity index improver of claim 1 , wherein the aminosilane pendant groups are derived from aminoalkyl silanes claim 1 , aminoalkyl siloxanes claim 1 , aminoalkyl polysiloxanes claim 1 , aminoaryl silanes claim 1 , aminoaryl siloxanes claim 1 , aminoarl oxy silanes claim 1 , and combinations thereof.3. The multi-functional olefin copolymer viscosity index improver of claim 1 , wherein the multi-functional olefin copolymer viscosity index improver is the reaction product of the acylated olefin copolymer and the aminosilane selected from aminoalkyl silanes claim 1 , aminoalkyl silixones claim 1 , aminoalkyl polysiloxanes claim 1 , aminoaryl silanes claim 1 , aminoaryl siloxanes claim 1 , aminoarl oxy silanes claim 1 , and combinations thereof.4. The multi-functional olefin copolymer viscosity index improver of claim 3 , wherein the reaction product is further reacted with an amine selected from alkylamines claim 3 , alkylpolyamines claim 3 , or combinations thereof.5. The multi-functional olefin copolymer viscosity index improver of claim 1 , wherein the grafted acylating moieties are grafted dicarboxylic moieties.6. The multi-functional olefin copolymer viscosity index ...

BIMODAL COPOLYMER COMPOSITIONS USEFUL AS OIL MODIFIERS AND LUBRICATING OILS COMPRISING THE SAME

Lubricating oil compositions are provided which contain bimodal copolymer compositions, and in particular bimodal ethylene-α-olefin copolymer compositions. The copolymer compositions comprise first and second ethylene-α-olefin copolymer components. The bimodal compositions are particularly useful as viscosity or rheology modifiers, e.g., in lubricating oil compositions. Lubricating oil compositions comprising the copolymer compositions advantageously exhibit enhanced shear stability index (SSI) and thickening efficiency (TE) values, while maintaining excellent low-temperature properties such as pour point, mini-rotary viscometer viscosity, and cold crank simulation performance. 1. A lubricating oil comprising:(1) at least 50 wt % of a base oil, based on the weight of the lubricating oil; and [{'sub': 3', '20', 'A, '(a) 30-70 wt %, based on the weight of the copolymer composition, of a first ethylene-α-olefin copolymer component comprising (i) 50 to 85 wt %, based on the weight of the first ethylene-α-olefin copolymer component, units derived from ethylene and (ii) units derived from a C-Cα-olefin comonomer, having melt flow rate MFRwithin the range from 0.5 to 25 g/10 min (ASTM D1238, 230° C./2.16 kg); and'}, {'sub': 3', '20', 'B, '(b) 30-70 wt %, based on the weight of the copolymer composition, of a second ethylene-α-olefin copolymer component comprising (i) 40 to 60 wt %, based on the weight of the second ethylene-α-olefin copolymer component, units derived from ethylene and (ii) units derived from a C-Cα-olefin comonomer, having MFRwithin the range from 0.1 to 10.0 g/10 min (ASTM D1238, 230° C./2.16 kg);'}, {'sub': A', 'B, 'wherein the inter-component MFR ratio MFR/MFRis within the range from 0.2 to 75.0, and'}, {'sub': 'm', 'further wherein the copolymer composition has each of the following: (i) overall ethylene content within the range from 15 to 85 wt %, based on the weight of the copolymer composition; (ii) MFR within the range from 1.0 to 6.0 g/10 min; ( ...

VISCOSITY INDEX IMPROVER WITH IMPROVED SHEAR-RESISTANCE AND SOLUBILITY AFTER SHEAR

The invention relates to a poly alkyl(meth)acrylate polymer comprising a combination of polybutadiene-based monomers having different average molecular weight, lubricant compositions comprising the polymer, a method for manufacturing the polymer and the use of the polymer as a viscosity index improver in a lubricating oil composition. 1. A poly alkyl(meth)acrylate polymer , obtained by polymerizing a monomer composition comprising:(a) from 5 to 35% by weight of one or more esters of (meth)acrylic acid and a first hydroxylated hydrogenated polybutadiene having a number-average molecular weight of from 500 to less than 3,000 g/mol, based on the total weight of the monomer composition;(b) from 1 to 15% by weight of one or more esters of (meth)acrylic acid and a second hydroxylated hydrogenated polybutadiene having a number-average molecular weight of from 3,000 to 10,000 g/mol, based on the total weight of the monomer composition;{'sub': 1', '30, '(c) from 4 to 98% by weight of one or more C-Calkyl(meth)acrylates, based on the total weight of the monomer composition,'}wherein the total weight of monomers (a) and (b) is at least 25% by weight, based on the total weight of the monomer composition, andwherein the total weight of monomers (a), (b) and (c) is at least 35% by weight, based on the total weight of the monomer composition.2. The polymer according to claim 1 , wherein the weight ratio of component (a) to component (b) is 1 or more.3. The polymer according to claim 1 , wherein the first hydroxylated hydrogenated polybutadiene has a number-average molecular weight of from 1 claim 1 ,000 to 2 claim 1 ,750 g/mol claim 1 , and the second hydroxylated hydrogenated polybutadiene has a number-average molecular weight of 3 claim 1 ,500 to 7 claim 1 ,000 g/mol.4. The polymer according to claim 1 , wherein the monomer composition comprises as component (a) from 15 to 35% by weight claim 1 , of one or more esters of (meth)acrylic acid and the first hydroxylated hydrogenated ...

VISCOSITY INDEX IMPROVER WITH IMPROVED SHEAR-RESISTANCE AND SOLUBILITY AFTER SHEAR

The invention relates to a poly alkyl(meth)acrylate polymer comprising a combination of polybutadiene-based monomers having different average molecular weight, lubricant compositions comprising the polymer, a method for manufacturing the polymer and the use of the polymer as a viscosity index improver in a lubricating oil composition. 1. A poly alkyl(meth)acrylate polymer , obtained by polymerizing a monomer composition comprising:(a) from 5 to 35% by weight of one or more esters of (meth)acrylic acid and a first hydroxylated hydrogenated polybutadiene having a number-average molecular weight of from 500 to less than 3,000 g/mol, based on the total weight of the monomer composition;(b) from 1 to 15% by weight of one or more esters of (meth)acrylic acid and a second hydroxylated hydrogenated polybutadiene having a number-average molecular weight of from 3,000 to 10,000 g/mol, based on the total weight of the monomer composition;{'sub': 1', '30, '(c) from 4 to 98% by weight of one or more C-Calkyl(meth)acrylates, based on the total weight of the monomer composition,'}wherein the total weight of monomers (a) and (b) is at least 25% by weight, based on the total weight of the monomer composition, andwherein the total weight of monomers (a), (b) and (c) is at least 35% by weight, based on the total weight of the monomer composition.2. The polymer according to claim 1 , wherein the weight ratio of component (a) to component (b) is 1 or more.3. The polymer according to claim 1 , wherein the first hydroxylated hydrogenated polybutadiene has a number-average molecular weight of from 1 claim 1 ,000 to 2 claim 1 ,750 g/mol claim 1 , and the second hydroxylated hydrogenated polybutadiene has a number-average molecular weight of 3 claim 1 ,500 to 7 claim 1 ,000 g/mol.4. The polymer according to claim 1 , wherein the monomer composition comprises as component (a) from 15 to 35% by weight claim 1 , of one or more esters of (meth)acrylic acid and the first hydroxylated hydrogenated ...

LUBRICANT POLYMERS

Lubricant compositions include copolymers of monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers, and a base oil or comprising a copolymer obtained by combining at least monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers in a mixture and co-polymerizing the monomers. The methods for the preparation of the lubricant compositions, and lubricants uses. 115-. (canceled)16. A lubricant composition comprising:a copolymer of alkyl methacrylate monomers, wherein said alkyl methacrylate monomers comprise at least:a. Monomers (A) selected from C6-C10 alkyl methacrylate monomers, 'a base oil.', 'b. Monomers (B) selected from C10-C18 alkyl methacrylate monomers, said monomers (B) comprising at least one C12 alkyl methacrylate monomer,'}17. A lubricant composition according to claim 16 , wherein the copolymer is obtained by combining at leasta. Monomers (A) selected from C6-C10 alkyl methacrylate monomers,b. Monomers (B) selected from C10-C18 alkyl methacrylate monomers, said monomers (B) comprising at least one C12 alkyl methacrylate monomer,in a mixture and co-polymerizing the monomers.18. The lubricant composition of claim 16 , wherein said monomers (B) further comprise at least one C14 alkyl methacrylate monomer.19. The lubricant composition according to claim 16 , wherein monomers (A) and monomers (B) represent at least 75% by weight of the total weight of monomers used to prepare the copolymer.20. The lubricant composition according to claim 16 , wherein the weight ratio of monomers (B) to monomers (A) in the copolymer is 99:1 to 10:90.21. The lubricant composition according to claim 16 , wherein monomers (A) are branched.22. The lubricant composition according to claim 21 , wherein monomers A are 2-ethyl hexyl methacrylate.23. The lubricant composition according to claim 16 , wherein monomers (B) are linear.24. The lubricant ...

LUBRICANT POLYMERS

A method of increasing the spreading of a lubricant on the liner surface after it's delivery, wherein the method comprises preparing the lubricant compositions comprising copolymers of monomers (A) selected from C6-C10 alkyl methacrylate monomers, and monomers (B) selected from C10-C18 alkyl methacrylate monomers, and a base oil or comprising a copolymer obtained by combining at least monomers (A) selected from C6-C10 alkyl methacrylate monomers, and monomers (B) selected from C10-C18 alkyl methacrylate monomers in a mixture and co-polymerizing the monomers for increasing the spreading and/or the self-spreading of the lubricant on the cylinder liner surface after its delivery. 115.-. (canceled)16. A method of increasing the spreading of a lubricant on the liner surface after its delivery , wherein said method comprises preparing a lubricant composition comprising:a copolymer of alkyl methacrylate monomers, wherein said alkyl methacrylate monomers comprise at least:a. Monomers (A) selected from C6-C10 alkyl methacrylate monomers,b. Monomers (B) selected from C10-C18 alkyl methacrylate monomers,a base oil.17. The method according to claim 16 , wherein the copolymer is obtained by combining at leasta. Monomers (A) selected from C6-C10 alkyl methacrylate monomers,b. Monomers (B) selected from C10-C18 alkyl methacrylate monomers,in a mixture and co-polymerizing the monomers, anda base oil.18. The method according to claim 16 , wherein monomers (A) and monomers (B) represent at least 75% by weight of the total weight of monomers used to prepare the copolymer.19. The method according to claim 16 , wherein the weight ratio of monomers (B) to monomers (A) in the copolymer is 99:1 to 10:90.20. The method according to claim 16 , wherein monomers (A) are branched.21. The method according to claim 20 , wherein monomers A are 2-ethyl hexyl methacrylate.22. The method according to claim 16 , wherein monomers (B) are linear.23. The method according to claim 22 , wherein monomers (B ...

DRIVELINE FLUIDS COMPRISING API GROUP II BASE OIL

Described herein is a process, comprising: a) selecting an API Group II base stock with selected viscosity index and pour point; b) blending a base oil with the base stock, and c) adding to the base oil: i) a liquid ethylene propylene copolymer viscosity modifier that reduces a traction coefficient, and ii) an additive package, to make a driveline fluid that has a defined viscosity index and excellent shear stability. Also provided is a driveline fluid composition having the high viscosity index and excellent shear stability, comprising: a) a base oil comprising from 50 wt % to 100 wt % API Group II base stock; b) a liquid ethylene propylene copolymer viscosity modifier that reduces a traction coefficient; and c) an additive package. Further provided is a method for lubricating an axle or manual transmission by supplying the driveline fluid composition. 1. A process for blending a driveline fluid , comprising:a. selecting at least one API Group II base stock having a viscosity index from 90 to 119 and a pour point from −19° C. to 0° C.;b. blending a base oil comprising 50 to 100 wt % of the at least one API Group II base stock; and i. 5 to 30 wt % of a viscosity modifier that is a liquid ethylene propylene copolymer, wherein the viscosity modifier reduces a traction coefficient of the driveline fluid; and', 'ii. an additive package designed for the driveline fluid, to make the driveline fluid; wherein the driveline fluid has a driveline fluid viscosity index of 140 to 180 and has a percentage loss of kinematic viscosity at 100° C. in a 20 hour KRL shear stability test of less than 5.5%., 'c. adding to the base oil2. The process of claim 1 , wherein the traction coefficient of the driveline fluid is from 0.019 to 0.028 when measured in a MTM traction measurement system at 120° C. claim 1 , with a 30% slide to roll ratio claim 1 , and at a load of 72 Newton.3. The process of claim 2 , wherein the traction coefficient of the driveline fluid is 0.026 or less.4. The ...

LOW ASH AND ASH-FREE ACID NEUTRALIZING COMPOSITIONS AND LUBRICATING OIL COMPOSITIONS CONTAINING SAME

An oleaginous nanoparticle dispersion of nanoparticles having a core of an organic base material immobilized within a surfactant layer, the use thereof as a low ash, or ash-free source of TBN in lubricating oil compositions, and lubricating oil compositions formulated with such oleaginous nanoparticle dispersions. 1. An oleaginous dispersion of nanoparticles with a core comprised primarily of an organic base , immobilized within a surfactant layer.2. The dispersion claim 1 , as claimed in claim 1 , wherein said organic base comprises polyamine.3. The dispersion of claim 1 , wherein said organic base is at least partially crosslinked.4. The dispersion of claim 3 , wherein from about 0.5 mol % to about 80 mol % of said organic base is crosslinked.5. The dispersion of claim 2 , wherein said polyamine is at least partially crosslinked.6. The dispersion of claim 2 , wherein from about 0.5 mol % to about 80 mol % of said polyamine is crosslinked.7. The dispersion of claim 2 , wherein said polyamine has an average molecular weight of from about 100 Daltons to about 1 claim 2 ,000 claim 2 ,000 Daltons8. The dispersion of claim 1 , wherein surfactant layer comprises one or more surfactants having a phase inversion temperature (PIT) outside the range of from about −35° C. to about 300° C.9. The dispersion of claim 1 , wherein said surfactant layer comprises one or more ionic surfactants selected from sulfonate claim 1 , phenate claim 1 , sulfurized phenate claim 1 , thiophosphonate claim 1 , salicylate and naphthenate metal salts.10. The dispersion of claim 8 , wherein said surfactant layer comprises one or more non-ionic surfactants.11. The dispersion of claim 10 , wherein said surfactant layer comprises one or more olefin and ethylene-α-olefin polymers functionalized with at least one polar functional group.12. The dispersion of claim 11 , wherein said surfactant layer comprises one or more olefin and ethylene-α-olefin polymers functionalized with at least one polar ...

LUBRICATING OIL COMPOSITION FOR SHOCK ABSORBER

Provided is a lubricating oil composition for a shock absorber, which realizes excellent riding comfort in low-temperature and high-temperature environments and can suppress worsening of riding comfort with time, which is caused by evaporation and shearing of the lubricating oil. The lubricating oil composition for a shock absorber contains (A) a base oil having a pour point of lower than −40° C. and a kinematic viscosity at 80° C. of from 2.0 to 2.7 mm/s, (B-1) from 1 to 15% by mass of a polymethacrylate having a weight-average molecular weight of from 10,000 to less than 100,000, and (B-2) from 0.1 to 5% by mass of a polymethacrylate having a weight-average molecular weight of from 100,000 to 200,000. 1: A lubricating oil composition , comprising:{'sup': '2', '(A) a base oil having a pour point of lower than −40° C. and a kinematic viscosity at 80° C. of from 2.0 to 2.7 mm/s;'}(B-1) from 1 to 15% by mass of a polymethacrylate having a weight-average molecular weight of from 10,000 to less than 100,000; and(B-2) from 0.1 to 5% by mass of a polymethacrylate having a weight-average molecular weight of from 100,000 to 200,000.2: The lubricating oil composition according to claim 1 , wherein the density at 15° C. of the base oil of the component (A) is from 0.80 to 0.83 g/cm.3: The lubricating oil composition according to claim 1 , which comprises from 1.1 to 20% by mass in a total amount of the component (B-1) and the component (B-2) in the lubricating oil composition.4: The lubricating oil composition according to claim 1 , wherein the polymethacrylate of the component (B-1) and/or the component (B-2) is a nondispersive polymethacrylate.5: The lubricating oil composition according to claim 1 , wherein the NOACK value at 150° C. of the lubricating oil composition is 12% by mass or less.6: The lubricating oil composition according to claim 1 , wherein the Brookfield viscosity at −40° C. of the lubricating oil composition is 700 mPa·s or less.7: The lubricating oil ...

LOW-FRICTION FLUORINATED COATINGS

Low-friction fluorinated coatings are disclosed herein. A preferred low-friction material contains a low-surface-energy fluoropolymer having a surface energy between about 5 mJ/mto about 50 mJ/m, and a hygroscopic material that is covalently connected to the fluoropolymer in a triblock copolymer, such as PEG-PFPE-PEG. The material forms a lubricating surface layer in the presence of humidity. An exemplary copolymer comprises fluoropolymers with average molecular weight from 500 g/mol to 20,000 g/mol, wherein the fluoropolymers are (α,ω)-hydroxyl-terminated and/or (α,ω)-amine-terminated, and wherein the fluoropolymers are present in the triblock structure T-(CH—CH—O)—CH—CF—O—(CF—CF—O)(CF—O)—CF—CH—(O—CH—CH)-T where T is a hydroxyl or amine terminal group, p=1 to 50, m=1 to 100, and n=1 to 100. The copolymer also contains isocyanate species and polyol or polyamine chain extenders or crosslinkers possessing a functionality of preferably 3 or greater. These durable, solvent-resistant, and transparent coatings reduce insect debris following impact. 2. The copolymer composition of claim 1 , wherein said fluoropolymers have an average molecular weight from about 1 claim 1 ,000 g/mol to about 10 claim 1 ,000 g/mol.3. The copolymer composition of claim 1 , wherein X and Y are the same.4. The copolymer composition of claim 1 , wherein X and Y are different.5. The copolymer composition of claim 1 , wherein p is selected from 6 to 50 for each of X and Y.6. The copolymer composition of claim 5 , wherein p is selected from 10 to 20 for each of X and Y.7. The copolymer composition of claim 1 , wherein said isocyanate species are selected from the group consisting of 4 claim 1 ,4′-methylenebis(cyclohexyl isocyanate) claim 1 , hexamethylene diisocyanate claim 1 , cycloalkyl-based diisocyanates claim 1 , tolylene-2 claim 1 ,4-diisocyanate claim 1 , 4 claim 1 ,4′-methylenebis(phenyl isocyanate) claim 1 , isophorone diisocyanate claim 1 , and combinations or derivatives thereof.8. The ...

LUBRICANT SYSTEM FOR REDUCING FRICTIONAL NOISE

A lubricant system for reducing frictional noise includes: a textile fabric at least partially embedded in a lubricant, the lubricant including a comb polymer having a main polymer chain and a plurality of side chains covalently bonded to the main polymer chain. At least one of the side chains has a molecular weight of at least 60 g/mol and/or at least 5 repeat units. 1. A lubricant system for reducing frictional noise , comprising:a textile fabric at least partially embedded in a lubricant, the lubricant comprising a comb polymer having a main polymer chain and a plurality of side chains covalently bonded to the main polymer chain,wherein at least one of the side chains has a molecular weight of at least 60 g/mol and/or at least 5 repeat units.2. The lubricant system according to claim 1 , wherein the textile fabric is physically enclosed by the comb polymer.3. The lubricant system according to claim 1 , wherein the comb polymer is at least partially chemically bonded to the textile fabric.4. The lubricant system according to claim 1 , wherein the lubricant is present as a solid at 20° C.5. The lubricant system according to claim 1 , wherein at least 10% of the repeat units of the main chain comprise at least one of the side chains.6. The lubricant system according to claim 1 , wherein the main polymer chain has a molecular weight of at least 580 g/mol claim 1 , and/or at least 8 repeat units.7. The lubricant system according to claim 1 , wherein the side chain has a molecular weight of at least 220 g/mol claim 1 , and/or at least 5 repeat units.8. The lubricant system according to claim 1 , wherein the side chain of the comb polymer comprises a base oil.9. The lubricant system according to claim 1 , wherein the comb polymer is obtained by polymerizing macromonomer having polymerizable functionalities claim 1 , the macromonomer having at least partially more than one polymerizable functionality.10. The lubricant system according to claim 9 , wherein the ...

MANUAL TRANSMISSION OIL COMPOSITION HAVING ENHANCED FRICTIONAL PROPERTIES AND ENABLING IMPROVED FUEL EFFICIENCY

A manual transmission oil composition includes: polyisobutenyl succinimide serving as a detergent-dispersant; and comb polymethacrylate (comb PMA), which has at least one of polar and nonpolar branches connected to a main chain thereof, and serves as a viscosity modifier. Polyisobutenyl succinimide is contained in an amount of 1 wt % to 5 wt % based on a total weight of the manual transmission oil composition, W and comb PMA is contained in an amount of 4 wt % to 12 wt % based on the total weight of the manual transmission oil composition. 1. A manual transmission oil composition , comprising:polyisobutenyl succinimide serving as a detergent-dispersant; andcomb polymethacrylate (comb PMA), which has at least one of polar and nonpolar branches connected to a main chain thereof, and serves as a viscosity modifier.2. The manual transmission oil composition of claim 1 , wherein polyisobutenyl succinimide is contained in an amount of 1 wt % to 5 wt % based on a total weight of the manual transmission oil composition claim 1 , andcomb PMA is contained in an amount of 4 wt % to 12 wt % based on the total weight of the manual transmission oil composition.3. The manual transmission oil composition of claim 1 , wherein a weight ratio of polyisobutenyl succinimide : comb PMA is 1 to 5 : 4 to 12.4. The manual transmission oil composition of claim 1 , wherein comb PMA includes olefin amide comb polymethacrylate.5. The manual transmission oil composition of claim 1 , further comprising at least one additive selected from the group consisting of an antiwear additive claim 1 , a friction modifier claim 1 , an extreme pressure additive claim 1 , and an antioxidant.6. The manual transmission oil composition of claim 5 , wherein the antiwear additive is zinc alkyl dithiophosphate claim 5 , and the zinc alkyl dithiophosphate is contained in an amount of 3 wt % to 5 wt % based on a total weight of the manual transmission oil composition.7. The manual transmission oil composition of ...

LUBRICATING OIL COMPOSITION AND IMPREGNATED BEARING

Provided are a lubricating oil composition which contains a base oil (A) containing an ester-based oil (Al), and a polymer (B) having a constituent unit (b) derived from an alkyl (meth)acrylate, wherein the content of the polymer (B) is 0.1 to 10% by mass based on the total amount of the lubricating oil composition, the lubricating oil composition has a viscosity index of 350 or more, the lubricating oil composition has a BF viscosity at −40° C. of 4000mPa·s or less, and the lubricating oil composition is used for an impregnated bearing, and an impregnated bearing impregnated with the lubricating oil composition. The lubricating oil composition has excellent lubricity in use in a wide temperature environment from a low temperature region to a high temperature region, is capable of maintaining excellent infiltration property even in an environment in which a temperature change between a low temperature and a high temperature is severe, and is suitable for use in an impregnated bearing. 1. A lubricating oil composition ,. comprising: a base oil comprising an ester-based oil; and a polymer having a constituent unit (b) derived from an alkyl (meth)acrylate ,wherein:the content of the polymer is 0.1 to 10.0% by mass based on the total amount of the lubricating oil composition,the lubricating oil composition has a viscosity index of 350 or more,the lubricating oil composition has a BF viscosity at −40° C. of 4000 mPa·s or less, andthe lubricating oil composition is used for an impregnated bearing.2. The lubricating oil composition of claim 1 , wherein the polymer has a weight average molecular weight of 350 claim 1 ,000 or more.3. The lubricating oil composition of claim 1 , wherein the polymer has a molecular weight distribution (Mw/Mn) (Mw:weight average molecular weight of the polymer, Mn: number average molecular weight of the polymer of 2.2 or less.4. The lubricating oil composition of claim 1 , wherein the constituent unit is derived from methyl (meth)acrylate claim ...

COPOLYMER AND LUBRICATING OIL COMPOSITION

The present invention addresses the problem of providing a lubricating oil composition having excellent heat resistance (suppression of discoloration in heating) and tackiness while maintaining excellent viscosity properties of a lubricating oil composition using a ricinolic acid polymer. The present invention provides a copolymer (B) containing structural units (a) derived from ricinolic acid, structural units (b) derived from an aliphatic dicarboxylic acid and structural units (c) derived from a diol having 2 to 10 carbon atoms in a specific ratio and having a specific intrinsic viscosity, and provides a lubricating oil composition containing a base oil and the copolymer (B) and having a mass ratio (mass of (A) /mass of (B)) of the base oil (A) to the copolymer (B) of 60/40 to 99.5/0.5. 1. A copolymer (B) satisfying the following requirements (B1) to (B3):(B1) the copolymer (B) comprisesstructural units (a) derived from ricinolic acid,structural units (b) derived from an aliphatic dicarboxylic acid, andstructural units (c) derived from a diol having 2 to 10 carbon atoms;(B2) when the total of the structural units (a), (b) and (c) is 100% by mol, the content of the structural units (a) is 20 to 90% by mol, the content of the structural units (b) is 5 to 40% by mol, and the content of the structural units (c) is 5 to 40% by mol; and(B3) the copolymer (B) has an intrinsic viscosity [IV] of in the range of 0.1 to 2.0 dl/g.2. A lubricating oil composition comprising a base oil (A) and the copolymer (B) according to and having a mass ratio (mass of (A)/mass of (B)) of the base oil (A) to the copolymer (B) of 60/40 to 99.5/0.5.3. The lubricating oil composition according to claim 2 , wherein the base oil (A) is a vegetable oil and/or a synthetic ester.4. The lubricating oil composition according to claim 3 , wherein the synthetic ester is a diester or a polyol ester.5. The lubricating oil composition according to claim 3 , or wherein the synthetic ester is an aliphatic ...

METHOD FOR IMPROVING HIGH TEMPERATURE ANTIFOAMING PERFORMANCE OF A LUBRICATING OIL

This disclosure provides a method for improving high temperature antifoaming performance of a lubricating oil in an engine or other mechanical component lubricated with the lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition with a lubricating oil base stock as a major component, and at least one silicone antifoaming agent, as a minor component. The silicone antifoaming agent is delivered to the lubricating oil by contacting the lubricating oil with a cured silicone (e.g., room temperature vulcanized (RTV) silicone) at a temperature, and for a period of time, sufficient to deliver silicone to the lubricating oil. The delivered silicone is soluble in the lubricating oil. The lubricating oils are useful as passenger vehicle engine oils (PVEO) and commercial vehicle engine oils (CVEO). 1. A method for delivering a silicone antifoaming agent to a lubricating oil , said method comprising contacting the lubricating oil with a cured silicone at a temperature , and for a period of time , sufficient to deliver silicone to the lubricating oil; wherein the delivered silicone is soluble in the lubricating oil.2. The method of wherein claim 1 , in an engine or other mechanical component lubricated with the lubricating oil claim 1 , high temperature antifoaming performance is improved as compared to high temperature antifoaming performance achieved using a lubricating oil containing a silicone antifoaming agent delivered from uncured silicone claim 1 , as determined by ASTM D6082 or ASTM D892 Sequence II.3. The method of wherein the cured silicone comprises room temperature vulcanized (RTV) silicone.4. The method of wherein the temperature is from 10° C. to 30° C. claim 1 , and the period of time is from 1 hour to 240 hours.5. The method of wherein the room temperature vulcanized (RTV) silicone comprises low molecular weight leachates.6. The method of wherein the low molecular weight leachates exhibit a bimodal molecular weight ...

FUNCTIONAL POLYALKYL (METH)ACRYLATES WITH ENHANCED DEMULSIBILITY PERFORMANCE

Polyalkyl(meth)acrylate (PAMA) polymers comprising a certain amount of hydroxyl-functionalized alkyl (meth)acrylates can be used for improving the demulsibility performance of high VI lubricating oil compositions. The lubricating oil compositions can be those which are based on apolar base oils, especially hydraulic fluid compositions. The polymers can be comprised in certain lubricating oil compositions. 1. A polyalkyl(meth)acrylate polymer , comprising:(a) 0% to 8% by weight of methyl (meth)acrylate;{'sub': '1-4', '(b) 1.5% to 4.5% by weight of a hydroxyl-substituted Calkyl(meth)acrylate; and'}{'sub': '6-30', '(c) 87.5% to 98.5% by weight of at least one Calkyl (meth)acrylate, wherein'}{'sub': 'w', 'the polyalkyl(meth)acrylate polymer has a weight-average molecular weight Min the range of 30,000 to 130,000 g/mol.'}2. The polyalkyl(th)ac late polymer according to claim 1 , comprising:(a) 2% to 8% by weight, of methyl (meth)acrylate;{'sub': '1-4', '(b) 1.9% to 4.0% by weight, of a hydroxyl-substituted Calkyl (meth)acrylate; and'}{'sub': '6-30', '(c) 88.0% by weight to 96.1% by weight of at least one Calkyl (meth)acrylate.'}3. The polyalkyl(meth)acrylate polymer according to claim 1 , having a weight-average molecular weight Min the range of 40 claim 1 ,000 to 100 claim 1 ,000 g/mol.4. (canceled)5. The polyalkyl(meth)acrylate polymer according to claim 1 , having a weight-average molecular weight Min the range of 50 claim 1 ,000 and 70 claim 1 ,000 g/mol.6. An additive composition claim 1 , comprising:(A) at least one apolar base oil selected from the group consisting of API Group II oils and API Group III oils and mixtures thereof, and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(B) the polyalkyl(meth)acrylate polymer of .'}7. The additive according to claim 6 , wherein the polyalkyl(meth)acry late polymer (B) comprises:(a) 2% to 8% by weight, of methyl (meth)acrylate;{'sub': '1-4', '(b) 1.9% to 4.0% by weight, of a hydroxyl-substituted Calkyl (meth)acrylate; ...

COMB POLYMERS FOR IMPROVING NOACK EVAPORATION LOSS OF ENGINE OIL FORMULATIONS

A comb polymer can be used for reducing a Noack evaporation loss of a lubricant composition, especially of an engine oil composition. Application of the comb polymer to the lubricant composition can bring about the desired reduction. The comb polymer can include specified amounts of macromonomer and alkyl acrylates. Resulting lubricant compositions can include the comb polymer. 1. A polyalkyl(meth)acrylate based comb polymer , comprising the following monomers:10 to 25% by weight of at least one ester of (meth)acrylic acid and a hydroxylated hydrogenated polybutadiene and{'sub': '4-18', '(b) 0.5% to 11% by weight of at least one Calkyl acrylate.'}2. The polyalkyl(meth)acrylate based comb polymer according to claim 1 , comprising the following monomers:(a) 10 to 25% by weight of at least one ester of (meth)acrylic acid and a hydroxylated hydrogenated polybutadiene;{'sub': '4-18', '(b) 0.5% to 11% by weight of at least one Calkyl acrylates acrylate;'}(c) 0% to 1% by weight of methyl methacrylate;(d) 55% to 70% by weight of n-butyl methacrylate;{'sub': '10-15', '(e) 5% to 20% by weight of at least one Calkyl methacrylate; and'}(f) 0% to 2% by weight of styrene monomers.3. The polyalkyl(meth)acrylate based comb polymer according to claim 1 , comprising as component (b) 0.5 to 5% by weight claim 1 , of at least one Calkyl acrylate.4. The polyalkyl(meth)acrylate based copolymer according to claim 1 , having a weight-average molecular weight Min the range of 200 claim 1 ,000 to 800 claim 1 ,000 g/mol claim 1 , determined by size exclusion chromatography (SEC) using commercially available polymethylmethacrylate standards.5. The polyalkyl(meth)acrylate based copolymer according to claim 1 , wherein the hydroxylated. hydrogenated polybutadiene of component (a) has a number-average molecular weight Mto DIN 55672-1 of 4 claim 1 ,000 to 6 claim 1 ,000 g/mol.6. The polyalkyl(meth)acrylate based copolymer according to claim 1 , having a PSSI of not more than 7 claim 1 , calculated ...

DISPERSANTS FOR LUBRICATING OIL COMPOSITIONS

A lubricating oil composition comprises a major amount of an oil of lubricating viscosity and a minor amount of an unsymmetrical bis-succinimide, or a mixture of unsymmetrical bis-succinimides, of the structure (I): 2. A lubricating oil composition according to claim 1 , wherein the α-olefin feedstock comprises 1-butene claim 1 , 1-pentene claim 1 , 1-hexene claim 1 , 1-heptene claim 1 , 1-octene claim 1 , 1-nonene claim 1 , 1-decene claim 1 , 1-undecene claim 1 , 1-dodecene claim 1 , 1-tetradecene and 1-octadecene and any mixtures of two or more of these α-olefins.3. A lubricating oil composition according to claim 2 , wherein the α-olefin feedstock consists essentially of 1-octene claim 2 , 1-decene claim 2 , 1-dodecene or any mixture thereof.4. A lubricating oil composition according to claim 1 , wherein the hydrocarbon group made by the metallocene-catalysed polymerisation of an α-olefin feedstock has a number average molecular weight of 300 to 20 claim 1 ,000 claim 1 , as determined by GPC with reference to linear polystyrene standards.5. A lubricating oil composition according to claim 1 , wherein x is from 1 to 8.6. A lubricating oil composition according to claim 1 , wherein the unsymmetrical bis-succinimide dispersant of the structure (I) is present in the lubricating oil composition in an amount of from 0.01 to 20% by mass claim 1 , based on the mass of the composition.7. A lubricating oil composition according to claim 1 , which is an automatic transmission fluid.9. A lubricating oil composition according to claim 1 , further comprising one or more co-additives in addition to the unsymmetrical bis-succinimide dispersant of the structure (I).10. A lubricating oil composition according to claim 8 , further comprising one or more co-additives in addition to the unsymmetrical bis-succinimide dispersant of the structure (I) and the friction modifier product of an isomerized alkenyl-substituted succinic anhydride and a polyamine having structure (II).12. A ...

LOW-FRICTION FLUORINATED COATINGS

Low-friction fluorinated coatings are disclosed herein. A preferred low-friction material contains a low-surface-energy fluoropolymer having a surface energy between about 5 mJ/mto about 50 mJ/m, and a hygroscopic material that is covalently connected to the fluoropolymer in a triblock copolymer, such as PEG-PFPE-PEG. The material forms a lubricating surface layer in the presence of humidity. An exemplary copolymer comprises fluoropolymers with average molecular weight from 500 g/mol to 20,000 g/mol, wherein the fluoropolymers are (α,ω)-hydroxyl-terminated and/or (α,ω)-amine-terminated, and wherein the fluoropolymers are present in the triblock structure T-(CH—CH—O)—CH—CF—O—(CF—CF—O)(CF—O)—CF—CH—(O—CH—CH)-T where T is a hydroxyl or amine terminal group, p=1 to 50, m=1 to 100, and n=1 to 100. The copolymer also contains isocyanate species and polyol or polyamine chain extenders or crosslinkers possessing a functionality of preferably 3 or greater. These durable, solvent-resistant, and transparent coatings reduce insect debris following impact.