Classifications

• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
  • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
  • C10M129/04—Hydroxy compounds
  • C10M129/06—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
  • C10M169/04—Mixtures of base-materials and additives
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  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
  • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
  • C10M2203/102—Aliphatic fractions
  • C10M2203/1025—Aliphatic fractions used as base material
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  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
  • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
  • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
  • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
  • C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/02—Hydroxy compounds
  • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/02—Hydroxy compounds
  • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
  • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
  • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
  • C10M2209/084—Acrylate; Methacrylate
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
  • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
  • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
  • C10M2215/064—Di- and triaryl amines
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
  • C10M2215/28—Amides; Imides
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
  • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
  • C10M2219/046—Overbasedsulfonic acid salts
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
  • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
  • C10M2223/04—Phosphate esters
  • C10M2223/045—Metal containing thio derivatives
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
  • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
  • C10M2227/066—Organic compounds derived from inorganic acids or metal salts derived from Mo or W
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
  • C10M2227/09—Complexes with metals
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
  • C10M2229/02—Unspecified siloxanes; Silicones
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2010/00—Metal present as such or in compounds
  • C10N2010/04—Groups 2 or 12
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2010/00—Metal present as such or in compounds
  • C10N2010/12—Groups 6 or 16
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
  • C10N2020/01—Physico-chemical properties
  • C10N2020/065—Saturated Compounds
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
  • C10N2020/01—Physico-chemical properties
  • C10N2020/069—Linear chain compounds
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
  • C10N2020/01—Physico-chemical properties
  • C10N2020/071—Branched chain compounds
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
  • C10N2030/02—Pour-point; Viscosity index
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
  • C10N2030/04—Detergent property or dispersant property
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/25—Internal-combustion engines
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/25—Internal-combustion engines
  • C10N2040/252—Diesel engines
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/25—Internal-combustion engines
  • C10N2040/255—Gasoline engines

Definitions

• the invention relates to the use of a lubricant composition for improving the cleanliness of a 4-stroke vehicle engine. More particularly, the invention relates to the use of an alcohol in a lubricating composition to improve the cleanliness of a 4-stroke vehicle engine.
• the conditions of use of gasoline engines and diesel engines include extremely short journeys as well as long journeys. In fact, 80% of the journeys of Western European cars are less than 12 kilometers while vehicles cover annual mileages of up to 300 000 km.
• the emptying intervals are also very variable, from 5,000 km for some small diesel engines to up to 100,000 km on modern commercial diesel engines.
• Lubricating compositions and especially lubricating compositions for motor vehicles must therefore have improved properties and performance.
• lubricating compositions for improving the cleanliness of a 4-stroke vehicle engine. Improving the cleanliness of such an engine generally includes reducing the formation of deposits, including training high temperature deposits such as varnishes, lacquers or deposits of carbon or coke. Such deposits may be formed on the hot surfaces of the engine parts such as piston throat bottoms, turbos axes or air compressors. The substances present in the lubricating compositions can oxidize in contact with the hot surfaces of the engine and generate the formation of insoluble products forming deposits. These deposits can foul the engine and cause problems of wear, seizing, scrubbing segments and turbo rotation problems for example. Generally, detergent or dispersant type additives are used to improve the cleanliness of a 4-stroke vehicle engine.
• An object of the present invention is therefore to provide compounds as well as a lubricating composition comprising these compounds which overcomes all or part of the aforementioned drawbacks.
• Another object of the present invention is to provide a lubricant composition for improving the cleanliness of a 4-stroke vehicle engine and whose formulation is easy to implement.
• Another object of the present invention is to provide a lubricant composition to improve the cleanliness of a 4-stroke vehicle engine and to reduce the content of detergent or dispersant additives.
• Yet another object of the present invention is to provide a lubricant composition for improving the cleanliness of a 4-stroke vehicle engine while retaining good cold properties.
• the invention thus relates to the use of an alcohol of formula (I)
• R represents a saturated linear or branched alkyl group comprising from 10 to 36 carbon atoms, preferably from 12 to 36 carbon atoms, preferentially from 12 to 24 carbon atoms, even more preferably from 12 to 18 carbon atoms, carbon,
• the improvement of the engine cleanliness according to the invention is considered as improving the engine cleanliness compared to what is obtained for a lubricating composition not comprising any alcohol according to the invention.
• the Applicant has found that the presence of at least one alcohol of formula (I) in a lubricant composition makes it possible to improve the cleanliness of a 4-stroke vehicle engine.
• the Applicant has also found that the presence of at least one alcohol of formula (I) also makes it possible to retain good cold properties of the lubricant.
• the lubricant compositions according to the invention have good properties for improving the cleanliness once implemented in an engine, this making it possible to reduce the content of detergent additives in said lubricating compositions.
• the alcohol is chosen from compounds of formula (I) in which R represents a saturated branched alkyl group comprising from 10 to 36 carbon atoms preferably from 12 to 36 carbon atoms, preferably from 12 to 24 carbon atoms, more preferably from 12 to 18 carbon atoms.
• the inventors have shown that an alcohol having an alkyl chain comprising more than 36 carbon atoms was solid. Thus, during the cold start the composition is not sufficiently fluid and therefore does not play its role. Moreover, the inventors have shown that an alcohol having an alkyl chain comprising less than 10 carbon atoms was very volatile. Thus, during operation of the engine, hot, the alcohol is volatilized and can no longer play its role. The choice of alcohol is therefore essential in the context of the invention.
• the alcohol of formula (I) is of formula (Ia)
• R 1 and R 2 are linear or branched saturated alkyls chosen so that the compound of formula (la) comprises from 10 to 36 carbon atoms, preferably from 12 to 36 carbon atoms, preferably from 12 to 24 carbon atoms, more preferably 12 to 18 carbon atoms.
• the alcohols according to the invention are marketed by Ecogreen Oleochemicals under the names Ecorol 12 / 98®, Ecorol 14 / 98® and Ecorol 16 / 98® or by the company Sasol under the name Isofol®.
• the alcohols of formula (I) with branched R, or the alcohols of formula (Ia), which are branched alcohols are liquid at temperatures below 0 ° C. (low melting point), which allows optimized use of lubricating compositions in 4-stroke vehicle engines according to the invention.
• the lubricant compositions comprising these alcohols have good cold properties.
• the lubricating composition comprises from 0.1 to 10% by weight, preferably from 0.1 to 4% by weight, more preferably from 0.2 to 3% by weight, advantageously from 0.3 to 2.5% by weight. % by weight of alcohol relative to the total weight of the lubricant composition.
• the present invention also relates to a lubricant composition for a 4-stroke vehicle engine, comprising:
• the present application also relates to the use of the lubricant composition according to the invention for improving the cleanliness of a 4-stroke vehicle engine.
• the invention also relates to a method for improving the cleanliness of a 4-stroke vehicle engine, said method comprising at least one step of bringing a mechanical part of the machine into contact with a lubricating composition as defined above. .
• the percentages indicated in the present application correspond to percentages by mass of active ingredient.
• the lubricant composition used according to the invention may comprise any type of mineral, synthetic or natural lubricating base oil, animal or vegetable, known to those skilled in the art.
• the base oils used in the lubricant compositions according to the invention may be oils of mineral or synthetic origins belonging to groups I to V according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) (Table A) or their mixtures.
• the mineral base oils according to the invention include all types of base oils obtained by atmospheric and vacuum distillation of crude oil, followed by operations such as solvent extraction, desalphating, solvent dewaxing, hydrotreating, hydrocracking, hydroisomerization and hydrofinishing.
• Mixtures of synthetic and mineral oils can also be used.
• lubricating bases for producing the lubricating compositions used according to the invention, except that they must have properties, in particular viscosity, viscosity index, sulfur, oxidation resistance, adapted for use for engines or for vehicle transmissions.
• the base oils of the lubricant compositions used according to the invention may also be chosen from synthetic oils, such as certain carboxylic acid esters and alcohols, and from polyalphaolefins.
• the polyalphaolefins used as base oils are, for example, obtained from monomers comprising from 4 to 32 carbon atoms, for example from octene, decene or dodecene, and whose viscosity at 100 ° C. is between 1, 5 and 15 mm 2.
• the base oils of the present invention are chosen from the above base oils whose aromatic content is between 0 and 45%, preferably between 0 and 30%.
• the aromatic content of the oils is measured according to UV Burdett method.
• the lubricant composition used according to the invention comprises at least 50% by weight of base oils relative to the total mass of the composition. More advantageously, the lubricant composition used according to the invention comprises at least 60% by weight, or even at least 70% by weight, of base oils relative to the total mass of the composition.
• the lubricant composition used according to the invention comprises from 60 to 99.5% by weight of base oils, preferably from 70 to 99.5% by weight of base oils, relative to the total mass of the composition.
• base oils preferably from 70 to 99.5% by weight of base oils, relative to the total mass of the composition.
• Many additives can be used for this lubricant composition used according to the invention.
• the preferred additives for the lubricant composition used according to the invention are chosen from friction modifiers, detergents, anti-wear additives, extreme pressure additives, viscosity index improvers, dispersants, antioxidants, pour point improvers, defoamers, thickeners and mixtures thereof.
• the lubricant composition used according to the invention comprises at least one antiwear additive, at least one extreme pressure additive or their mixtures.
• Anti-wear additives and extreme pressure additives protect friction surfaces by forming a protective film adsorbed on these surfaces.
• the anti-wear additives are chosen from phosphosulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTPs.
• the preferred compounds have the formula Zn ((SP (S) (OR 3 ) (OR 4 )) 2 , in which R 3 and R 4 , which may be identical or different, independently represent an alkyl group, preferably an alkyl group containing from 1 to 18 carbon atoms.
• Amine phosphates are also anti-wear additives which can be used in the lubricating composition according to the invention.
• the phosphorus provided by these additives can act as a poison of the catalytic systems of automobiles because these additives are ash generators.
• these effects can be minimized by partially substituting amine phosphates with non-phosphorus additives, such as, for example, polysulfides, especially sulfur-containing olefins.
• the lubricant composition according to the invention may comprise from 0.01 to 6% by weight, preferably from 0.05 to 4% by weight, more preferably from 0.1 to 2% by weight relative to the mass. total lubricating composition, anti-wear additives and extreme pressure additives.
• the lubricant composition according to the invention may comprise at least one friction-modifying additive.
• the friction modifying additive may be chosen from a compound providing metal elements and an ash-free compound.
• the compounds providing metal elements mention may be made of transition metal complexes such as Mo, Sb, Sn, Fe, Cu and Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen, sulfur or phosphorus.
• the ashless friction modifier additives are generally of organic origin and may be selected from monoesters of fatty acids and polyols, alkoxylated amines, alkoxylated fatty amines, fatty epoxides, borate fatty epoxides; fatty amines or fatty acid glycerol esters.
• the fatty compounds comprise at least one hydrocarbon group comprising from 10 to 24 carbon atoms.
• the lubricating composition according to the invention may comprise from 0.01 to 2% by weight or from 0.01 to 5% by weight, preferably from 0.1 to 1.5% by weight. mass or 0.1 to 2% by weight relative to the total mass of the lubricant composition, friction modifier additive.
• the lubricant composition according to the invention may comprise at least one antioxidant additive.
• the antioxidant additive generally serves to retard the degradation of the lubricating composition in service. This degradation can notably result in the formation of deposits, the presence of sludge or an increase in the viscosity of the lubricant composition.
• Antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides.
• antioxidant additives commonly used, mention may be made of antioxidant additives of phenolic type, antioxidant additives of amine type, antioxidant phosphosulfur additives. Some of these antioxidant additives, for example phosphosulfur antioxidant additives, can be ash generators. Phenolic antioxidant additives may be ash-free or may be in the form of neutral or basic metal salts.
• the antioxidant additives may especially be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, diphenylamines substituted with at least one C 1 -C 12 alkyl group, ⁇ , ⁇ '-dialkyl-aryl diamines and mixtures thereof.
• the sterically hindered phenols are chosen from compounds comprising a phenol group in which at least one vicinal carbon of the carbon carrying the alcohol function is substituted by at least one alkyl group in the form of d-C 10 , preferably a grouping.
• Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives.
• amine compounds are aromatic amines, for example aromatic amines of formula NR 5 R 6 R 7 in which R 5 represents an optionally substituted aliphatic or aromatic group, R 6 represents an optionally substituted aromatic group, R 5 7 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 8 S (O) z R 9 in which R 8 represents an alkylene group or an alkenylene group, R 9 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2.
• Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
• antioxidant additives is copper compounds, for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulphonates, phenates, copper acetylacetonates. Copper salts I and II, succinic acid or anhydride salts can also be used.
• the lubricant composition according to the invention may contain all types of antioxidant additives known to those skilled in the art.
• the lubricating composition comprises at least one ash-free antioxidant additive.
• the lubricating composition according to the invention comprises from 0.5 to 2% by weight relative to the total weight of the composition, of at least one antioxidant additive.
• the lubricant composition according to the invention may also comprise at least one detergent additive.
• the detergent additives generally make it possible to reduce the formation of deposits on the surface of the metal parts by dissolving the secondary oxidation and combustion products.
• the detergent additives that can be used in the lubricant composition according to the invention are generally known to those skilled in the art.
• the detergent additives may be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
• the associated cation may be a metal cation of an alkali metal or alkaline earth metal.
• the detergent additives are preferably chosen from the alkali metal or alkaline earth metal salts of carboxylic acids, the sulphonates, the salicylates, the naphthenates and the phenate salts.
• the alkali and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
• metal salts generally comprise the metal in stoichiometric amount or in excess, therefore in an amount greater than the stoichiometric amount. It is then overbased detergent additives; the excess metal bringing the overbased character to the detergent additive is then generally in the form of an oil insoluble metal salt, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate .
• the lubricant composition according to the invention may comprise from 0.5 to 4% by weight of detergent additive relative to the total mass of the lubricant composition.
• the lubricant composition according to the invention may also comprise at least one pour point depressant additive.
• pour point depressant additives By slowing the formation of paraffin crystals, pour point depressant additives generally improve the cold behavior of the lubricant composition according to the invention.
• pour point depressant additives mention may be made of alkyl polymethacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes and alkylated polystyrenes.
• the lubricant composition according to the invention may also comprise at least one dispersing agent.
• the dispersing agent may be chosen from Mannich bases, succinimides and their derivatives.
• the lubricating composition according to the invention may comprise from 0.2 to 10% by weight of dispersing agent relative to the total mass of the lubricating composition.
• the lubricating composition of the present invention may also comprise at least one viscosity index improving additive.
• additives improving the viscosity number include polymeric esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, styrene, butadiene and isoprene, polyacrylates, polymethacrylates (PMA) or alternatively olefin copolymers, in particular ethylene / propylene copolymers.
• the lubricating composition according to the invention can be in various forms.
• the lubricant composition according to the invention may in particular be an anhydrous composition.
• this lubricating composition is not an emulsion.
• the lubricant composition defined above is used to improve the cleanliness of a 4-stroke vehicle engine.
• the 4-stroke vehicle lubricating composition is preferably characterized by a BN of less than 15, preferably less than 10. BN is determined according to ASTM D-2896.
• vehicle engine lubricants generally include little detergent.
• vehicle engine is more particularly intended to mean vehicle engines such as:
• gasoline engines including petrol and diesel engines, but also gas and petrol engines (dual fuel gas / gasoline engines), gas and diesel engines (dual fuel gas engines / diesel) as well as engines running on gasoline and diesel fuel;
• Figure 1 Photo of a piston bottom after an engine test with a comparative composition (CC1).
• Figure 2 Photo of a piston bottom after a motor test with a composition according to the invention (CI8).
• Example 1 Lubricating compositions according to the invention
• Gr III base oil (kinematic viscosity at 100 ° C
• Gr III base oil (kinematic viscosity at 100 ° C
• PAO base oil (kinematic viscosity at
• succinimide an antioxidant amine
• an antioxidant amine an antioxidant
• Lubricating compositions according to the invention are then prepared CM, CI2, CI3, CI4, CI5, CI6, CI7 depending on the nature and amounts (% by weight) presented in Table 2.
• the engine clean performance on the lubricant compositions CI8 and CC1 are evaluated according to the following method.
• Each lubricating composition (8 kg) is evaluated during a cleanliness test of a diesel engine with a common rail for cars.
• the engine has a displacement of 1, 4 L for 4 cylinders. Its power is 80 kW.
• the cycle time of the test is 96 hours alternating idle speed and 4 000 rpm.
• the temperature of the lubricating composition is 145 ° C. and the temperature of the water of the cooling system is 100 ° C. No emptying or extra makeup composition is performed during the test. EN 590 fuel is used.
• the test is carried out in two phases for a total duration of 106 hours and in a first rinsing and lapping step for 10 hours and then in a second step with the evaluated composition (4 kg), finally according to an endurance stage lasting 96 hours with the evaluated composition (4 kg).
• Example 2 The results confirm those of Example 2 as regards the improvement of the engine cleanliness of a lubricating composition comprising an alcohol according to the invention (lubricating composition CI8) compared to a lubricating composition comprising no alcohol according to the invention. (lubricant composition CC1).
• compositions of Table 8 were tested for their cold properties:
• the viscosity of the compositions according to the invention is lower than for the comparative composition.
• This MRV test makes it possible to simulate the conditions of lubrication of the engine during the cold start and in particular the pumpability of the lubricant during the cold start. Therefore, the compositions according to the invention have better cold pumpability than the compositions that do not comprise fatty alcohol.
• compositions according to the invention are lower than for the comparative composition.
• This CCS test makes it possible to simulate the conditions of lubrication of the engine during the cold start and in particular that the fluidity of the cold lubricant allowing the starting of the engine. Therefore, the compositions according to the invention have a better cold flowability than compositions comprising no fatty alcohol.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Lubricants (AREA)

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• 2017
  • 2017-05-15 FR FR1754249A patent/FR3066200A1/fr active Pending
• 2018
  • 2018-05-15 EP EP18726101.1A patent/EP3625315A1/de not_active Withdrawn
  • 2018-05-15 CN CN201880031401.XA patent/CN110621765A/zh active Pending
  • 2018-05-15 KR KR1020197033169A patent/KR20190142771A/ko unknown
  • 2018-05-15 WO PCT/EP2018/062553 patent/WO2018210829A1/fr unknown
  • 2018-05-15 US US16/612,201 patent/US20200299603A1/en not_active Abandoned

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