EP3990590A1 - Utilisation d'un composé phosphoré à titre d'additif anti-usure et extrême-pression non-corrosif dans un lubrifiant pour système de propulsion de véhicule électrique ou hybride - Google Patents
Utilisation d'un composé phosphoré à titre d'additif anti-usure et extrême-pression non-corrosif dans un lubrifiant pour système de propulsion de véhicule électrique ou hybrideInfo
- Publication number
- EP3990590A1 EP3990590A1 EP20734043.1A EP20734043A EP3990590A1 EP 3990590 A1 EP3990590 A1 EP 3990590A1 EP 20734043 A EP20734043 A EP 20734043A EP 3990590 A1 EP3990590 A1 EP 3990590A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric
- sulfur
- esters
- groups
- phosphorus compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
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- 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
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
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- 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
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/12—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond
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- 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
- 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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- 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
- C10M2205/02—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
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- 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
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- 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
- C10M2223/041—Triaryl phosphates
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- 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
- C10M2223/049—Phosphite
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- 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
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
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- 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
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- 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
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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- 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
- C10N2030/40—Low content or no content compositions
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- 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
- C10N2030/40—Low content or no content compositions
- C10N2030/43—Sulfur free or low sulfur content compositions
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- 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
- C10N2040/02—Bearings
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- 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
- C10N2040/14—Electric or magnetic purposes
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- 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
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
Definitions
- the present invention relates to the field of lubricating compositions, more particularly the field of lubricating compositions for a propulsion system of an electric or hybrid vehicle. It relates more particularly to the use, in these lubricants, of phosphorus compounds free from sulfur and from an amine function, as anti-wear and extreme pressure additives which are advantageously "non-corrosive".
- electric vehicle within the meaning of the present invention is meant a vehicle comprising an electric motor as the sole means of propulsion, while a hybrid vehicle comprises a combustion engine and an electric motor as combined means of propulsion.
- propulsion system within the meaning of the present invention, is meant a system comprising the mechanical parts necessary for propelling a vehicle.
- the propulsion system of an electric vehicle thus more particularly includes an electric motor comprising the rotor-stator assembly of the power electronics (dedicated to speed regulation), a transmission and a battery.
- lubricating compositions also called “lubricants”, for the main purposes of reducing the frictional forces between the various parts of the vehicle's propulsion system, especially between moving metal parts in engines.
- lubricating compositions are also effective in preventing premature wear or even damage to these parts, and in particular to their surface.
- a lubricating composition is conventionally composed of one or more base oil (s) with which are generally associated several additives dedicated to stimulate the lubricating performance of the base oil, but also to provide it with additional performance.
- antioxidants are considered in order to reduce the wear of parts of the propulsion system, in particular of the mechanical parts of the engine, and thus to prevent degradation of the durability of the engine.
- anti-wear additives for example, dimercaptothiadiazoles, polysulfides, in particular sulfur-containing olefins, amine phosphates, or else phospho-sulfur additives, such as metal alkylthiophosphates, in in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP.
- anti-wear additives commonly used in lubricants for vehicle engines, such as dimercaptothiadiazoles, zinc dithiophosphate or polysulphides, have the disadvantage of being corrosive.
- ionic additives such as metal dialkyldithiophosphates reduce the electrical insulating capacity of the fluid.
- the corrosion problem can be particularly critical in the context of the propulsion systems of electric or hybrid vehicles.
- corrosion can lead to a risk of damage to the winding of the stator and rotor pair, sensors in the propulsion system, solenoid valves in the hydraulic system, but also bearings located between the rotor and the stator of a electric motor, generally copper-based, and therefore particularly susceptible to corrosion, or even seals or varnishes present in the propulsion system. It is therefore crucial, in the context of the use of lubricants for motor systems in electric or hybrid vehicles, to prevent the risk of corrosion.
- the lubricant is a good electrical insulator in order to avoid any failure in the electrical components present.
- a conductive lubricant can lead to a risk of electric current leakage from the stator and rotor windings, thus reducing the efficiency of the propulsion systems, and creating a possible overheating at the level of the electrical components, even up to 'to deteriorate the system. It is therefore crucial, in the context of the use of lubricants for motorization systems of electric or hybrid vehicles, that the lubricants have good properties in terms of electrical insulation, in addition to their non-corrosive properties.
- the present invention is specifically aimed at providing a means for improving the anti-wear properties of a lubricant intended for a propulsion system of an electric or hybrid vehicle, while overcoming the corrosion problems encountered in the context of anti-wear. conventionally used wear.
- the inventors have discovered that it is possible to access a lubricating composition for a propulsion system of electric or hybrid vehicles, exhibiting improved anti-wear properties, without thereby inducing a corrosive effect, by implementing, as antiwear and extreme pressure additives, phosphorus compounds free from sulfur and amine function.
- the present invention relates, according to a first of its aspects, to the use of at least one phosphorus compound, free of sulfur and of amine function, as an anti-wear and extreme pressure additive in a lubricating composition intended for a propulsion system of an electric or hybrid vehicle.
- anti-wear and extreme pressure additive is intended to denote a compound which, used in a lubricating composition, in particular in a lubricating composition for a motorization system of an electric or hybrid vehicle, makes it possible to improve the properties. anti-wear of the composition, even under severe pressure and / or temperature conditions.
- the anti-wear properties of a composition can be more particularly evaluated according to the ASTM D2670 standard.
- the invention also relates, according to another of its aspects, the use of a lubricating composition comprising at least one phosphorus compound, free of sulfur and of an amine function, as an anti-wear and extreme pressure additive, for lubricate and possibly cool a propulsion system of an electric or hybrid vehicle, in particular for lubricating and cooling the electric motor and the power electronics of an electric or hybrid vehicle.
- a lubricating composition comprising at least one phosphorus compound, free of sulfur and of an amine function, as an anti-wear and extreme pressure additive, for lubricate and possibly cool a propulsion system of an electric or hybrid vehicle, in particular for lubricating and cooling the electric motor and the power electronics of an electric or hybrid vehicle.
- the corrosive (or corroding) power of a compound can be evaluated according to a test implementing the study of the variation in the value of the electrical resistance of a copper wire of a predetermined diameter, as a function of the duration immersing this yarn in a composition comprising, in a non-corrosive medium, for example in one or more base oils, said compound to be tested.
- the variation in the value of this electrical resistance is correlated directly with the variation in the diameter of the wire tested.
- a compound is qualified as “non-corrosive” when the loss in diameter of the copper wire studied is less than or equal to 0.5 ⁇ m after immersion for 80 hours, in particular less than or equal to. at 0.2 ⁇ m after immersion for 20 hours in the composition comprising said compound.
- the dielectric properties of a lubricant are represented in particular by the electrical resistivity and the dielectric loss (tan d), which can be measured according to the IEC 60247 standard.
- Electrical resistivity represents the ability of the material to oppose the flow of electric current. It is expressed in ohm-meter (W hi) The higher the electrical resistivity, the lower the electrical conduction of the lubricant.
- the loss angle d is the complementary angle of the phase shift between the applied voltage and the alternating current. This factor reflects the energy losses by the Joule effect. The temperature rises are therefore directly linked to the value of d.
- a lubricant intended for use in a vehicle transmission commonly has a tan d value on the order of unity at room temperature. The lower the value of tan d, the greater the electrical insulation of the lubricant.
- the said phosphorus compound (s), used as antiwear and extreme pressure additives according to the invention are chosen from phosphate esters or phosphite esters, in particular triarylphosphate esters or triarylphosphite, preferably esters of tri (alkyl-aryl) phosphate or tri (alkyl-aryl) phosphite, and advantageously esters of triphenyl phosphate or esters of triphenyl phosphite.
- a composition according to the invention thus exhibits both good anti-wear and extreme pressure properties, while being non-corrosive. It is thus particularly advantageous for the application, considered according to the invention, in a propulsion system of an electric or hybrid vehicle, where it is crucial to prevent the risks of corrosion while having good dielectric properties.
- a composition according to the invention also has the advantage of being easy to formulate.
- the use as an anti-wear and extreme pressure additive, of one or more phosphorus compounds according to the invention, non-corrosive makes it possible to dispense with the use, in these lubricants.
- additional additives called “anti-corrosion”, aimed at inhibiting the effects of corrosion, generated in particular by the use of corrosive additives.
- the present invention also relates to a method of lubricating a propulsion system of an electric or hybrid vehicle, comprising at least one step of bringing at least one mechanical part of said system into contact with a lubricating composition comprising, to as anti-wear and extreme pressure additive, at least one phosphorus compound, free of sulfur and of amine function.
- a lubricating composition according to the invention is used to lubricate the electric motor itself, in particular the bearings located between the rotor and the stator of an electric motor, and / or the transmission, in particular the reduction gear, in an electric or hybrid vehicle.
- FIG 1 schematically represents an electric or hybrid vehicle propulsion system.
- the invention is based on the use, in a lubricant for a motorization system of an electric or hybrid vehicle, as an anti-wear and extreme pressure additive, of one or more phosphorus-free compounds. sulfur and an amine function.
- phosphorus additive or compound according to the invention
- phosphorus additive or compound according to the invention
- the name “phosphorus additive (or compound) according to the invention” will denote the said phosphorus compound (s), free of sulfur and of an amine function, used according to invention as an antiwear and extreme pressure additive.
- sulfur-free within the meaning of the present invention is understood to characterize the fact that the anti-wear and extreme pressure additive considered according to the invention does not contain a sulfur atom.
- the term “free of an amine function” is understood to mean characterizing the fact that the anti-wear and extreme pressure additive considered according to the invention does not comprise an amine function, in other words does not comprise any primary amine group. , secondary, tertiary and quaternary.
- the antiwear and extreme pressure additive considered according to the invention does not comprise a nitrogen atom.
- the phosphorus compounds according to the invention which are free of sulfur and of an amine function, make it possible to confer anti-wear and extreme pressure properties on the composition.
- the phosphorus-containing anti-wear and extreme pressure additives according to the invention are not corrosive, in other words do not induce a corrosion effect when they are brought into contact with metal surfaces, in particular those of parts. of a propulsion system in an electric or hybrid vehicle.
- the phosphorus-containing anti-wear and extreme pressure additives used according to the invention can be more particularly chosen from phosphoric acid derivatives, and more particularly from phosphate esters, phosphite esters, phosphonate esters, phosphinate esters and phosphine oxides.
- phosphorus-containing antiwear and extreme pressure additives may be of the following formula (I):
- radicals X represent, independently of each other, groups -OR ’or R’, where R ’represent hydrocarbon groups preferably having 1 to 24 carbon atoms,
- the phosphorus-containing antiwear and extreme pressure additive according to the invention is chosen from phosphite esters, and more particularly corresponds to the above formula (I), in which s is 0.
- the phosphorus-containing antiwear and extreme pressure additive according to the invention is chosen from phosphonate esters, and more particularly corresponds to the aforementioned formula (I), in which s is equal to 1 and two. of the three radicals X represent groups -OR '.
- the phosphorus-containing antiwear and extreme pressure additive according to the invention is chosen from phosphate esters, and more particularly corresponds to the aforementioned formula (I), in which s is 1 and the three X radicals represent -OR 'groups.
- hydrocarbon groups R ′ in the above formula (I) are chosen, independently of one another, from:
- - aryl groups preferably Cr, a C io
- said groups possibly themselves being optionally substituted with one or more hydrocarbon groups, in particular with one or more alkyl, alkenyl, alkoxyalkyl, cycloalkyl and / or aryl groups.
- alkyl a saturated, linear or branched aliphatic group; for example, a C x to C z alkyl represents a saturated carbon chain of x to z carbon atoms, linear or branched;
- alkenyl an unsaturated, linear or branched aliphatic group
- a C x to C z alkenyl group represents an unsaturated carbon chain of x to z carbon atoms, linear or branched
- alkoxy-alkyl means an alkyl group carrying at least one alkoxy group.
- An alkoxy group is an -OR group where R represents an alkyl group;
- cycloalkyl a cyclic alkyl group, for example a C x to C z cycloalkyl represents a cyclic carbon group of x to z carbon atoms, for example a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl or cycloheptyl;
- aryl a mono- or polycyclic aromatic group, in particular comprising between 6 and 10 carbon atoms.
- aryl group mention may be made of phenyl or naphthyl groups.
- the phosphorus-containing antiwear and extreme pressure additives according to the invention are chosen from the phosphate esters of the following formula (G): [Chem 2]
- R 1, R 2 and R 3 represent, independently of one another, hydrocarbon groups, preferably having from 1 to 24 carbon atoms, in particular as defined above.
- R 1, R 2 and R 3 are chosen, independently of one another, from alkyl groups, linear or branched, preferably C 2 to C 18; cycloalkyl groups, preferably C3 to Cx; and aryl groups, preferably C> to Cio; said cycloalkyl and aryl groups possibly being optionally substituted by one or more alkyl groups, linear or branched.
- a phosphorus-containing antiwear and extreme pressure additive according to the invention is of above-mentioned formula (G), in which R 1, R 2 and R 3 are identical, preferably as defined above.
- the anti-wear and extreme pressure phosphorus additives according to the invention can be advantageously chosen from triaryl phosphate esters, and in particular tri (alkyl-aryl) phosphate esters, preferably from esters of triphenyl phosphate.
- an antiwear and extreme pressure phosphorus additive according to the invention is of the following formula (II):
- n 1 and R represent groups in the para position, preferably alkyl groups, preferably branched, C 3 to C> n such as an isopropyl group.
- a phosphorus-containing antiwear additive according to the invention is of formula (II) in which the groups - (R) n are identical.
- the phosphorus-containing antiwear and extreme pressure additives according to the invention are chosen from the phosphite esters of the following formula (I "):
- R 4 independently of one another, hydrocarbon groups, preferably having 1 to 24 carbon atoms, particularly as previously defined.
- R 4 , R 5 and R ⁇ are chosen, independently of one another, from alkyl groups, linear or branched, preferably C 2 to C 18; cycloalkyl groups, preferably C> to Cx; and aryl groups, preferably C> to Cio; said cycloalkyl and aryl groups possibly being optionally substituted by one or more alkyl groups, linear or branched.
- a phosphorus-containing anti-wear and extreme pressure additive according to the invention is of above-mentioned formula (G), in which R 4 , Rs and Ro are identical, preferably as defined above.
- the phosphorus-containing antiwear and extreme pressure additives according to the invention can be advantageously chosen from triaryl phosphite esters, and in particular tri (alkyl-aryl) phosphite esters, preferably from esters of triphenyl phosphite.
- an anti-wear and extreme pressure phosphorus additive according to the invention is of the following formula (IG): [Chem 5]
- groups R represent, independently of one another, alkyl groups, linear or branched in Ci to Cio, in particular from C 3 to Cx, and n represent, independently of one another, 0, 1 or 2.
- a phosphorus-containing antiwear additive according to the invention is of formula (IG) in which the groups - (R) n are identical.
- the phosphorus-containing antiwear additive according to the invention is chosen from either tri (isopropylphenyl) phosphate (CAS 68937-41-7) and tris (2,4-ditert-butylphenyl) phosphite (CAS 31570-04- 4).
- the phosphorus antiwear and extreme pressure additive considered according to the invention can be in the form of a mixture of at least two phosphorus compounds, in particular as defined. above.
- the phosphorus compounds used according to the invention can be commercially available, or else prepared according to synthetic methods known to those skilled in the art.
- the phosphorus-containing antiwear and extreme pressure additive (s) considered according to the invention, in particular as defined above, can be used in a lubricating composition for an electric or hybrid vehicle propulsion system, at a rate of 0.01 % and 10% by weight, preferably between 0.1% and 5% by weight, more preferably between 0.5% and 3% by weight, relative to the total weight of the lubricating composition.
- the phosphorus-containing anti-wear and extreme-pressure additive (s) used according to the invention are esters of triaryl, phosphate, in particular of formula (II) as defined above, and preferably are implemented at a rate of 0.01% and 10% by weight, preferably between 0.1% and 5% by weight, more preferably between 0.5% and 3% by weight, relative to the total weight of the lubricating composition .
- the phosphorus-containing anti-wear and extreme-pressure additive (s) used according to the invention are esters of triaryl phosphite, in particular of formula (IG) as defined above, and preferably are implemented at a rate of 0.01% and 10% by weight, preferably between 0.1% and 5% by weight, more preferably between 0.5% and 3% by weight, relative to the total weight of the lubricating composition .
- a lubricating composition considered according to the invention comprises less than 10% by mass, in particular less than 5% by mass, or even is free of anti-wear additive (s) ⁇ ) amine (s) and / or sulfur ( s), in particular additive (s) phosphorus (s) amine (s) and / or sulfur (s).
- a lubricating composition considered according to the invention comprises less than 7.5% by mass, in particular less than 3% by mass, or even is free of anti-wear additive (s) distinct from the phosphorus additives free.
- a composition used according to the invention may comprise, in addition to one or more phosphorus-containing anti-wear and extreme pressure additives according to the invention, in particular as defined above, one or more base oils, as well as other additives. , conventionally considered in lubricating compositions.
- a lubricating composition suitable for the invention can thus comprise one or more base oils.
- base oils can be chosen from the base oils conventionally used in the field of lubricating oils, such as mineral, synthetic or natural, animal or vegetable oils or their mixtures. It can be a mixture of several base oils, for example a mixture of two, three, or four base oils.
- the base oils of the lubricating compositions considered according to the invention can in particular 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) and presented in Table 1 below or their mixtures.
- Mineral base oils include all types of base oils obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, dealphating, solvent dewaxing, hydrotreatment, hydrocracking, hydroisomerization and hydrofinishing. .
- Mixtures of synthetic and mineral oils, which can be biobased, can also be used.
- the base oils of the compositions used according to the invention can also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, polyalphaolefins (PAO), and polyalkylene glycols (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 2 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
- synthetic oils such as certain esters of carboxylic acids and alcohols, polyalphaolefins (PAO), and polyalkylene glycols (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 2 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
- the PAOs used as base oils are for example obtained from monomers comprising from 4 to 32 carbon atoms, for example from octene or decene.
- the weight average molecular weight of PAO can vary quite widely. Preferably, the weight average molecular mass of the PAO is less than 600 Da.
- the weight-average molecular mass of PAO can also range from 100 to 600 Da, from 150 to 600 Da, or even from 200 to 600 Da.
- the oil or the base oils of the composition used according to the invention are chosen from polyalphaolefins (PAO), polyalkylene glycols (PAG), esters of carboxylic acids and alcohols, and mixtures thereof. .
- PAO polyalphaolefins
- PAG polyalkylene glycols
- esters of carboxylic acids and alcohols and mixtures thereof.
- the base oil (s) of the composition used according to the invention is chosen from oils of group III, IV or V, and mixtures thereof, preferably is a base oil of group III.
- the oil or the base oils of the composition used according to the invention can be chosen from the base oils of group II.
- a lubricating composition considered according to the invention may comprise at least 50% by mass of base oil (s) relative to its total mass, in particular from 60 to 99% by mass of base oil (s), and more particularly between 70 and 98% by weight, preferably between 80 and 97% by weight.
- a lubricating composition suitable for the invention may also further comprise all types of additives, distinct from the phosphorus-containing antiwear and extreme pressure additives considered according to the invention, suitable for use in a lubricant for a propulsion system of a electric or hybrid vehicle.
- additives are chosen so as not to affect the properties of the lubricating composition, in particular the properties. conferred by said antiwear and extreme pressure phosphorus additive (s) according to the invention.
- Such additives can be chosen from friction modifiers, viscosity index modifiers, extreme pressure additives other than the phosphorus-containing antiwear and extreme pressure additives according to the invention, detergents, dispersants, antioxidants, pour point depressants, anti-foam agents and mixtures thereof.
- composition suitable for the invention comprises at least one additional additive selected from antioxidants, detergents, dispersants, pour point depressant additives, anti-foam agents, and mixtures thereof.
- additives can be introduced singly and / or in the form of a mixture like those already available for sale for commercial lubricant formulations for vehicle engines, with a performance level as defined by G ACEA (Association European Automobile Manufacturers) and / or GARI (American Petroleum Institute), well known to those skilled in the art.
- G ACEA Association European Automobile Manufacturers
- GARI American Petroleum Institute
- a lubricating composition suitable for the invention may comprise at least one friction modifier additive.
- the friction modifier additive can be chosen from a compound providing metallic elements and an ash-free compound.
- the compounds providing metallic elements mention may be made of transition metal complexes such as Mo, Sb, Sn, Fe, Cu, Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen or carbon atoms. sulfur or phosphorus.
- the ash-free friction modifying additives are generally of organic origin and can be chosen from fatty acid and polyol monoesters, 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.
- a lubricating composition suitable for 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 or from 0.1 to 2%. by weight of friction modifier additive, relative to the total weight of the composition.
- a lubricating composition used according to the invention can comprise at least one antioxidant additive.
- the antioxidant additive generally helps to delay the degradation of the composition in use. This degradation can be reflected in particular by the formation of deposits, by the presence of sludge or by an increase in the viscosity of the composition.
- Antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides.
- antioxidant additives currently used, there may be mentioned antioxidant additives of phenolic type, antioxidant additives of amine type, phosphosulfurized antioxidant additives. Some of these antioxidant additives, for example phosphosulfurized antioxidant additives, can generate ash.
- the phenolic antioxidant additives can be free of ash or be in the form of neutral or basic metal salts.
- the antioxidant additives can in particular 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 C1-C12 alkyl group, N, N '-dialkyl-aryl-diamines and mixtures thereof.
- the sterically hindered phenols are chosen from compounds comprising a phenol group of which at least one carbon vicinal of the carbon carrying the alcohol function is substituted by at least one C 1 -Cio alkyl group, preferably an alkyl group.
- C I -C O preferably a C4 alkyl group, preferably tert-butyl group.
- Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives.
- Examples of amino compounds are aromatic amines, for example aromatic amines of formula NR 4 R 5 R 6 in which R 4 represents an aliphatic group or an aromatic group, optionally substituted, R 5 represents an aromatic group, optionally substituted, R 6 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 7 S (0) z R 8 in which R 7 represents an alkylene group or an alkenylene group, R 8 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 are that of copper compounds, for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulphonates, phenates, copper acetylacetonates. Copper I and II salts, salts of succinic acid or anhydride can also be used.
- a lubricating composition used according to the invention can contain all types of antioxidant additives known to those skilled in the art.
- a lubricating composition used according to the invention comprises at least one antioxidant additive free of ash.
- a lubricating composition used according to the invention can comprise from 0.5 to 2% by weight of at least one antioxidant additive, relative to the total weight of the composition.
- a lubricating composition suitable for the invention can also include at least one detergent additive.
- Detergent additives generally reduce the formation of deposits on the surface of metal parts by dissolving by-products of oxidation and combustion.
- the detergent additives which can be used in a lubricating composition used according to the invention are generally known to those skilled in the art.
- the detergent additives can be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
- the associated cation can be a metallic cation of an alkali or alkaline earth metal.
- the detergent additives are preferably chosen from alkali metal or alkaline earth metal salts of carboxylic acids, sulphonates, salicylates, naphthenates, as well as salts of phenates.
- the alkali metals and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
- metal salts generally include the metal in a stoichiometric amount or else in excess, therefore in an amount greater than the stoichiometric amount.
- overbased detergent additives the excess metal providing the overbased character to the detergent additive is then generally in the form of an oil-insoluble metal salt, for example example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate.
- a lubricating composition suitable for the invention may for example comprise from 2 to 4% by weight of detergent additive, relative to the total weight of the composition.
- a lubricating composition used according to the invention can comprise at least one dispersing agent.
- the dispersing agent can be chosen from Mannich bases, succinimides and their derivatives.
- a lubricating composition used according to the invention may for example comprise from 0.2 to 10% by weight of dispersing agent, relative to the total weight of the composition.
- a lubricating composition suitable for the invention may further comprise at least one antifoam agent.
- the antifoam agent can be chosen from silicones.
- a lubricating composition suitable for the invention may comprise from 0.01 to 5% by mass, preferably from 0.1 to 2% by mass of antifoaming agent, relative to the total weight of the composition.
- a lubricating composition suitable for the invention may also include at least one pour point depressant additive (also called “PPD” agents for "For Point Depressant” in English).
- PPD 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 composition.
- pour point lowering additives there may be mentioned polymethacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes, alkylated polystyrenes.
- said phosphorus anti-wear additive (s) according to the invention can be added to an oil or mixture of base oils, then the other additional additives added.
- said phosphorus and extreme pressure anti-wear additive (s) according to the invention may be added to a pre-existing conventional lubricating formulation, comprising in particular one or more base oils, and optionally additional additives.
- the said phosphorus and extreme pressure anti-wear additive (s) according to the invention can be combined with one or more additional additives, and the "package" of additives thus formed added to an oil or mixture. base oils.
- a lubricating composition used according to the invention exhibits a kinematic viscosity, measured at 100 ° C. according to the ASTM D445 standard, ranging from 1 to 15 mm 2 / s, in particular ranging from 3 to 10 mm 2 / s.
- a lubricating composition used according to the invention has a kinematic viscosity, measured at 40 ° C. according to the ASTM D445 standard, ranging from 3 to 80 mm 2 / s, in particular from 15 to 70 mm 2 / s.
- a lubricating composition used according to the invention can be of a grade according to the SAEJ300 classification defined by formula (X) W (Y), in which X represents 0 or 5; and Y represents an integer ranging from 4 to 20, in particular ranging from 4 to 16 or from 4 to 12.
- a lubricating composition used according to the invention has an electrical resistivity measured at 90 ° C of between 5 and 10,000 Mohm.m, more preferably between 6 and 5,000 Mohm.m.
- a lubricating composition used according to the invention exhibits a dielectric loss measured at 90 ° C of between 0.01 and 30, more preferably between 0.02 and 25, more preferably between 0.02 and 10.
- a lubricating composition formulated according to the invention comprises, or even consists of:
- base oil or mixture of base oils, preferably chosen from base oils of group III, base oils of group IV or V;
- additives chosen from antioxidants, detergents, dispersants, pour point lowering additives, anti-foaming agents, and mixtures thereof.
- a lubricating composition formulated according to the invention comprises, or even consists of:
- additives chosen from antioxidants, detergents, dispersants, additives for lowering the pour point, anti-foam agents, and mixtures thereof;
- composition formulated according to the invention is used as a lubricant for a propulsion system of an electric or hybrid vehicle, and more particularly of the engine and of the power electric in a electric or hybrid vehicle.
- the present invention relates to the use of a composition as defined above, using as anti-wear and extreme pressure additive, preferably as sole anti-wear and extreme pressure additive, one or more phosphorus compounds free of sulfur and of an amine function, in particular as defined above, preferably of triaryl phosphate ester type, in particular corresponding to formula (II) as defined above, for lubricating a propulsion system of an electric or hybrid vehicle, in particular for lubricating the electric motor and the power electric of an electric or hybrid vehicle.
- anti-wear and extreme pressure additive preferably as sole anti-wear and extreme pressure additive, one or more phosphorus compounds free of sulfur and of an amine function, in particular as defined above, preferably of triaryl phosphate ester type, in particular corresponding to formula (II) as defined above, for lubricating a propulsion system of an electric or hybrid vehicle, in particular for lubricating the electric motor and the power electric of an electric or hybrid vehicle.
- the present invention thus relates to the use, as an additive in a lubricating composition, of one or more phosphorus compounds free of sulfur and of an amine function, in particular as defined above, for simultaneously reducing wear and not to cause corrosion on the parts of a propulsion system of an electric or hybrid vehicle, in particular on the stator and rotor winding, sensors in the propulsion system, solenoid valves in the hydraulic system but also at the level of the bearings located between the rotor and the stator of an electric motor and / or of the transmission, in particular of the reduction gear, in an electric or hybrid vehicle.
- the propulsion system of an electric or hybrid vehicle comprises in particular the electric motor part (1), an electric battery (2) and a transmission, in particular a speed reducer (3).
- the electric motor typically comprises power electronics (11) connected to a stator (13) and a rotor (14).
- the stator comprises coils, in particular copper coils, which are supplied alternately by an electric current. This makes it possible to generate a rotating magnetic field.
- the rotor itself consists of coils, permanent magnets or other magnetic materials, and is rotated by the rotating magnetic field.
- a bearing (12) is generally integrated between the stator (13) and the rotor (14).
- a transmission, and in particular a speed reducer (3), makes it possible to reduce the speed of rotation at the output of the electric motor and to adapt the speed transmitted to the wheels, allowing at the same time to control the speed of the vehicle.
- the bearing (12) is particularly subjected to high mechanical stresses and poses fatigue wear problems. It is therefore necessary to lubricate the bearing in order to increase its life. Also, the reducer is subjected to high friction stresses and therefore needs to be lubricated appropriately in order to prevent it from being damaged too quickly.
- the invention relates in particular to the use of a composition as described above for lubricating an electric motor of an electric or hybrid vehicle, in especially for lubricating bearings located between the rotor and the stator of an electric motor.
- compositions as described above to lubricate the transmission, in particular the reduction gear, in an electric or hybrid vehicle.
- a composition according to the invention can thus be used to lubricate the various parts of a propulsion system of an electric or hybrid vehicle, in particular of the bearings located between the rotor and the stator of an electric motor and / or the transmission, in particular the reduction gear, in an electric or hybrid vehicle.
- a lubricating composition according to the invention exhibits excellent anti-wear and extreme pressure performance while being non-corrosive.
- the invention also relates, according to another of its aspects, to a method of lubricating at least one part of a propulsion system of an electric or hybrid vehicle, in particular of the bearings located between the rotor and the stator of. an electric motor; and / or of the transmission, in particular of the reducer, comprising at least one step of bringing at least said part into contact with a composition as described above.
- the present invention thus proposes a method for simultaneously reducing wear and not causing corrosion in at least one part of a propulsion system of an electric or hybrid vehicle, in particular of the bearings located between the rotor and the stator of an electric motor; and / or of the transmission, in particular of the reducer, said method comprising at least one step of bringing at least said part into contact with a composition as described above.
- a composition according to the invention can exhibit, in addition to lubricating properties, good electrical insulation properties.
- a composition according to the invention can simultaneously be used to lubricate one or more parts of a propulsion system of an electric or hybrid vehicle, in particular for lubricating the sensors and solenoid valves of the engine, bearings, but also the winding located at the rotor and stator of an electric motor, or the lubrication at the transmission level, in particular the gears, sensors, solenoid valves, or the reducer that we find in an electric or hybrid vehicle, and to electrically isolate at least one part of said propulsion system, in particular from the battery, from the engine or from the power electronics.
- a lubricating composition considered according to the invention advantageously exhibits a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, of between 2 and 8 mm 2 / s, preferably between 3 and 7 mm 2 / s. It is understood that the uses described above can be combined, a composition as described above can be used both as a lubricant, as an electrical insulator and also as a cooling fluid for the engine, the battery. and the transmission of an electric or hybrid vehicle.
- composition according to the invention make it possible to define uses according to the invention which are also particular, advantageous or preferred.
- composition C1 comprising a phosphorus compound A, in accordance with the invention: tri (isopropylphenyl) phosphate;
- composition C2 comprising a phosphorus compound B in accordance with the invention: tris (2,4-ditert-butylphenyl) phosphite;
- composition C3 comprising a phospho-sulfur compound C known as anti-wear and extreme pressure, not in accordance with the invention: tri-phenyl phosphorothionate; and - A composition C4 comprising a mixture of phosphate compounds of amine D known as anti-wear, not in accordance with the invention, marketed under the reference Irgalube 349;
- composition C6 comprising a mixture of zinc dialkyldithiophosphate compounds F known as anti-wear, not in accordance with the invention.
- Compositions C1 to C6 comprise, in addition to each of the aforementioned compounds, a group III base oil.
- compositions and the amounts are indicated in Table 2 below.
- the corrosive (or corroding) power of a composition can be evaluated according to a test implementing the study of the variation in the value of the electrical resistance of a copper wire having a predetermined diameter, as a function of the duration d immersion of this thread within the composition.
- the variation in the value of this electrical resistance is correlated directly with the variation in the diameter of the wire tested.
- the diameter of the wire chosen is 70 ⁇ m.
- compositions C1 and C2 being compositions according to the invention and compositions C3 to C6 being compositions serving as a comparison).
- the resistance of the wire is measured using an ohmmeter.
- the measurement current is 1 mA.
- the temperature of the composition to be tested is brought to 150 ° C.
- the resistance of the copper wire is calculated by this equation (1):
- R is the resistance
- p is the resistivity of copper
- L is the length of the wire
- S is the section area
- the wire diameter is calculated from the section area (2):
- D is the diameter of the wire.
- the diameter of the wire decreases, therefore causing an increase in the value of the resistance.
- the wire diameter loss is therefore calculated directly from the measured resistance. When the measured resistance is infinite, it is an open circuit. This therefore means that the wire has broken, which defines very severe corrosion.
- a composition is “non-corrosive” when the loss in diameter of the copper wire studied is less than or equal to 0.5 ⁇ m after immersion for 80 hours, in particular less than or equal to 0.1 ⁇ m after immersion. for 20 hours in the composition.
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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)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1907147A FR3097872B1 (fr) | 2019-06-28 | 2019-06-28 | Utilisation d’un composé phosphoré à titre d’additif anti-usure et extrême-pression non-corrosif dans un lubrifiant pour système de propulsion de véhicule électrique ou hybride. |
| PCT/EP2020/067825 WO2020260462A1 (fr) | 2019-06-28 | 2020-06-25 | Utilisation d'un composé phosphoré à titre d'additif anti-usure et extrême-pression non-corrosif dans un lubrifiant pour système de propulsion de véhicule électrique ou hybride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3990590A1 true EP3990590A1 (fr) | 2022-05-04 |
| EP3990590B1 EP3990590B1 (fr) | 2025-02-12 |
Family
ID=68138476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20734043.1A Active EP3990590B1 (fr) | 2019-06-28 | 2020-06-25 | Utilisation d'un composé phosphoré à titre d'additif anti-usure et extrême-pression non-corrosif dans un lubrifiant pour système de propulsion de véhicule électrique ou hybride |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20220380697A1 (fr) |
| EP (1) | EP3990590B1 (fr) |
| JP (1) | JP2022538638A (fr) |
| KR (1) | KR20220047253A (fr) |
| CN (1) | CN114096646A (fr) |
| ES (1) | ES3013925T3 (fr) |
| FR (1) | FR3097872B1 (fr) |
| MX (1) | MX2021015549A (fr) |
| WO (1) | WO2020260462A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3097871B1 (fr) | 2019-06-28 | 2022-01-14 | Total Marketing Services | Utilisation d’un composé de type triazole à titre d’additif pour améliorer les propriétés anti-corrosiond’une composition lubrifiante |
| WO2024112665A1 (fr) | 2022-11-23 | 2024-05-30 | The Lubrizol Corporation | Lubrifiant pour groupe motopropulseur contenant un polyéther |
| JP7769733B2 (ja) | 2023-01-30 | 2025-11-13 | アフトン・ケミカル・コーポレーション | 車両のトランスミッションのための潤滑組成物 |
| WO2025230512A1 (fr) | 2024-04-30 | 2025-11-06 | The Lubrizol Corporation | Lubrifiant pour groupe motopropulseur contenant un polyéther |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7307048B2 (en) * | 2001-05-28 | 2007-12-11 | Nissan Motor Co., Ltd. | Transmission oil composition for automobile |
| US7673497B2 (en) * | 2005-10-18 | 2010-03-09 | Idq Operating, Inc. | System, methods, and compositions for detecting and inhibiting leaks in transmission systems |
| US7871966B2 (en) * | 2007-03-19 | 2011-01-18 | Nippon Oil Corporation | Lubricating oil composition |
| JP5779376B2 (ja) * | 2011-03-29 | 2015-09-16 | Jx日鉱日石エネルギー株式会社 | 潤滑油組成物 |
| JP6228104B2 (ja) * | 2014-12-04 | 2017-11-08 | 東燃ゼネラル石油株式会社 | 潤滑油組成物 |
| CN107513457A (zh) * | 2017-09-14 | 2017-12-26 | 辽宁兰晶科技有限公司 | 一种电动汽车传动系统专用油及其制备方法 |
-
2019
- 2019-06-28 FR FR1907147A patent/FR3097872B1/fr active Active
-
2020
- 2020-06-25 WO PCT/EP2020/067825 patent/WO2020260462A1/fr not_active Ceased
- 2020-06-25 JP JP2021577602A patent/JP2022538638A/ja active Pending
- 2020-06-25 US US17/619,872 patent/US20220380697A1/en not_active Abandoned
- 2020-06-25 CN CN202080049712.6A patent/CN114096646A/zh active Pending
- 2020-06-25 ES ES20734043T patent/ES3013925T3/es active Active
- 2020-06-25 MX MX2021015549A patent/MX2021015549A/es unknown
- 2020-06-25 KR KR1020227001743A patent/KR20220047253A/ko not_active Withdrawn
- 2020-06-25 EP EP20734043.1A patent/EP3990590B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3097872B1 (fr) | 2022-01-14 |
| US20220380697A1 (en) | 2022-12-01 |
| EP3990590B1 (fr) | 2025-02-12 |
| CN114096646A (zh) | 2022-02-25 |
| ES3013925T3 (en) | 2025-04-15 |
| KR20220047253A (ko) | 2022-04-15 |
| WO2020260462A1 (fr) | 2020-12-30 |
| FR3097872A1 (fr) | 2021-01-01 |
| JP2022538638A (ja) | 2022-09-05 |
| MX2021015549A (es) | 2022-02-16 |
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