EP4623052A1 - Composition lubrifiante pour transmission automobile - Google Patents
Composition lubrifiante pour transmission automobileInfo
- Publication number
- EP4623052A1 EP4623052A1 EP23809644.0A EP23809644A EP4623052A1 EP 4623052 A1 EP4623052 A1 EP 4623052A1 EP 23809644 A EP23809644 A EP 23809644A EP 4623052 A1 EP4623052 A1 EP 4623052A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- lubricating composition
- carbon atoms
- additive
- chosen
- 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.)
- Pending
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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
- C10M109/00—Lubricating compositions characterised by the base-material being a compound of unknown or incompletely defined constitution
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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
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
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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
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/16—Amides; Imides
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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
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/38—Heterocyclic nitrogen compounds
- C10M133/44—Five-membered ring containing nitrogen and carbon only
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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
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty carbon atoms]
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
- C10M2215/28—Amides; Imides
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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
- C10M2223/049—Phosphite
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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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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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
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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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
- C10N2030/18—Anti-foaming property
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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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
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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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
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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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
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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
- C10N2040/25—Internal-combustion engines
Definitions
- the present invention relates to the field of lubricating compositions, in particular for motor vehicles, in particular for lubricating the transmission members of motor vehicles, in particular the gears of thermal or electric motor transmissions.
- Oils also called “lubricating compositions” or “lubricants” for these transmissions must therefore be particularly effective in protecting parts against wear and fatigue, and in particular protecting gear teeth against the phenomenon of seizure.
- Seizing occurs under heavy load conditions and can be assessed by monitoring visual deterioration.
- Preventing this phenomenon involves reducing contact stresses thanks to appropriate geometry of the parts, and reducing friction, by avoiding adhesion.
- the lubricating composition intervenes in this prevention process, mainly through the physicochemical reactivity of its additives.
- Anti-wear and extreme pressure additives containing sulfur, phosphorus, or borate are generally added to give transmission oils protective properties against seizure.
- the other additives present in the lubricating composition can also have an impact, positive or negative, on this phenomenon.
- Another advantage which the object of the invention must meet is to avoid the introduction of any additive, and more particularly of any extreme pressure anti-wear additive, comprising sulfur. It is desirable to limit, or even completely eliminate, sulfur from transmission oils, in particular for electric vehicle transmissions, in order to limit the occurrence of the corrosion phenomenon and to limit the conductivity values to the required levels.
- composition, object of the present invention will not include any anti-wear additive based on Zinc.
- Document EP3546550A1 discloses a composition comprising the reaction product between an acid phosphate and a nitrogen compound.
- Document EP3812445A1 discloses a composition comprising an acid phosphate comprising hydrocarbon groups of 1 to 6 carbon atoms.
- the present invention relates to a lubricating composition
- a lubricating composition comprising:
- alkyl chain preferably linear, comprising from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms, and
- the lubricating composition comprises, relative to the total weight of the lubricating composition:
- the lubricating composition further comprises at least one dispersant, preferably a borated dispersant, more preferably a borated dispersant chosen from borated succinimides, more preferably from borated polyisobutene succinimides.
- the lubricating composition according to the invention comprises:
- the base oil(s) have a kinematic viscosity at 100°C ranging from 1.5 to 35 cSt.
- the invention also relates to the use of the composition according to the invention for lubricating at least one mechanical part of a motor vehicle, preferably present in a transmission member of a motor vehicle, preferably a gear of a vehicle automobile.
- the invention also relates to the use of an additive in a lubricating composition comprising at least one base oil, to improve the load capacity of the lubricating composition, said additive corresponding to formula (I):
- R and R 1 are chosen independently of each other from a hydrogen atom or linear or branched, saturated or unsaturated hydrocarbon groups, comprising from 8 to 40 carbon atoms, at least one radical from R and R 1 being a hydrocarbon group comprising at least two ethoxylated and/or propoxylated units.
- the additive corresponding to formula (I) is used in combination with an additive chosen from phosphites containing 1 to 24 carbon atoms, preferably with the following proportions in the lubricating composition:
- additive(s) chosen from phosphites containing 1 to 24 carbon atoms, relative to the total weight of the lubricating composition.
- the lubricating composition used in the use of the additive is as defined in the invention.
- the lubricating composition used in the use of the additive according to the invention advantageously has one or more of the following characteristics:
- R and R 1 are chosen independently of each other from a hydrogen atom or linear or branched alkyl or alkenyl groups, at least one radical among R and R 1 being an alkyl or alkenyl group further comprising at at least two ethoxylated units, preferably among alkyl or alkenyl groups, linear or branched, at least one radical among R and R 1 being an alkyl or alkenyl group further comprising at least two ethoxylated units, t/or
- R and/or RI are chosen independently of each other from a hydrogen atom or hydrocarbon groups consisting of: o an alkyl chain, preferably linear, comprising from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms, and o from 2 to 15 ethoxylated units, preferably from 3 to 10 ethoxylated units, it being understood that at least one radical among R or RI is a hydrocarbon group consisting of: o an alkyl chain, of preferably linear, comprising from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms, and from 2 to 15 ethoxylated units, preferably from 3 to 10 ethoxylated units, preferably the two radicals R and RI are chosen independently of each other among the hydrocarbon groups constituted by:
- alkyl chain preferably linear, comprising from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms, and
- the lubricating composition comprises: o from 250 to 1300 ppm by weight of phosphorus, including preferably from 400 to 1400 ppm by weight of phosphorus provided by the additive(s) corresponding to formula (I) and/or o less than 10 ppm by weight of sulfur, preferably less than 5 ppm by weight of sulfur, even preferably less than 1 ppm by weight of sulfur, and/or
- the lubricating composition further comprises at least one additive chosen from phosphites comprising from 1 to 24 carbon atoms, preferably from phosphites comprising from 4 to 12 carbon atoms, preferably from phosphites comprising two alkyl groups each having 2 to 6 carbon atoms, and/or
- the lubricating composition comprises from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight, more preferably from 0.1 to 3% by weight, of additive(s) corresponding to the formula (I) relative to the total weight of the lubricating composition, and/or
- the lubricating composition comprises, relative to the total weight of the lubricating composition: o from 0.01 to 5% by weight, preferably from 0.02 to 2% by weight, of additive(s) corresponding to formula (I ), and o from 0.05 to 5% by weight, preferably from 0.1 to 2% by weight, of additive(s) chosen from phosphites comprising two alkyl groups each having from 2 to 6 atoms carbon, and/or
- the lubricating composition further comprises at least one dispersant, preferably a borated dispersant, more preferably a borated dispersant chosen from borated succinimides, more preferably from borated polyisobutene succinimides, and/or
- hydrocarbon groups means a hydrocarbon chain (comprising carbon and hydrogen atoms) optionally comprising one or more heteroatoms, such as oxygen or nitrogen atoms.
- R and R 1 are chosen independently of each other from alkyl or alkenyl groups, linear or branched, further comprising at least two ethoxylated and/or propoxylated units.
- R and R 1 are chosen independently of each other from linear or branched alkyl or alkenyl groups, at least one radical among R and R 1 being an alkyl or alkenyl group further comprising at least two ethoxylated patterns.
- R and/or R 1 comprise(s) from 2 to 20 ethoxylated and/or propoxylated units, preferably ethoxylated. According to one embodiment, R and/or R 1 comprise(s) from 2 to 15 ethoxylated and/or propoxylated units, preferably ethoxylated, or even from 3 to 10 ethoxylated and/or propoxylated units, preferably ethoxylated.
- the R and R 1 groups comprise, independently of each other, in addition to the ethoxylated and/or propoxylated units, an alkyl chain, preferably linear, comprising from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms.
- composition according to the invention comprises at least one anti-wear additive corresponding to formula (I) where R and/or R 1 are chosen independently of one another from an atom d hydrogen or hydrocarbon groups constituted by:
- alkyl chain preferably linear, comprising from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms, and
- R or R 1 is a hydrocarbon group consisting of:
- alkyl chain preferably linear, comprising from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms, and
- the lubricating composition may optionally comprise a mixture of compounds corresponding to formula (I). Said compounds may vary, for example, by the number of ethoxylated and/or propoxylated units and/or by the number of carbon atoms.
- the anti-wear(s) corresponding to formula (I) provide(s) from 250 to 1300 ppm by weight of phosphorus.
- the anti-wear additive(s) of formula (I) represents(s) from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight, more preferably from 0. 1 to 3% by weight of the total weight of the lubricating composition according to the invention.
- the additive of formula (I) is combined with a phosphite type additive.
- the lubricating composition according to the invention further comprises at least one anti-wear additive chosen from phosphites comprising from 1 to 24 carbon atoms, preferably from phosphites comprising 4 to 12 carbon atoms.
- the phosphite type anti-wear additive is chosen from phosphites comprising two alkyl groups each having from 2 to 6 carbon atoms.
- the phosphite type anti-wear additive is dibutyl hydrogen phosphite.
- the phosphite type anti-wear additive(s) represent(s) from 0.05 to 5% by weight, preferably from 0.1 to 2% by weight, of the total weight of the lubricating composition according to the invention.
- the lubricating composition comprises:
- anti-wear additive(s) corresponding to formula (I) where R and R 1 are chosen independently from one of the other among a hydrogen atom or hydrocarbon groups, linear or branched, saturated or unsaturated, comprising from 8 to 40 carbon atoms, at least one radical among R and R 1 being a hydrocarbon group comprising at least two ethoxylated units and /or propoxylated, and
- the lubricating composition comprises:
- anti-wear additive(s) corresponding to formula (I) where R and R 1 are chosen independently from one of the other among a hydrogen atom or alkyl or alkenyl groups, linear or branched, at least one radical among R and R 1 being an alkyl or alkenyl group further comprising at least two ethoxylated units, and
- anti-wear additive(s) chosen from phosphites comprising two alkyl groups each having from 2 to 6 carbon atoms , relative to the total weight of the lubricating composition.
- the lubricating composition comprises:
- anti-wear additive(s) corresponding to formula (I) where R and R 1 are chosen independently from one of the another among alkyl or alkenyl groups, linear or branched, at least one radical among R and R 1 being an alkyl or alkenyl group further comprising at least two ethoxylated units, and
- anti-wear additive(s) chosen from phosphites comprising two alkyl groups each having from 2 to 6 carbon atoms , relative to the total weight of the lubricating composition.
- the lubricating composition according to the invention comprises one or more base oils, preferably in a content of at least 70% by weight, preferably ranging from 75 to 99.5% by weight, more preferably from 80 to 99%. by weight, preferably from 85 to 98% by weight, relative to the total weight of the lubricating composition.
- the lubricating composition according to the invention comprises at least one base oil having a kinematic viscosity at 100°C according to the ASTM D445 standard. ranging from 1.5 to 35 cSt.
- the base oils of the lubricating composition according to the invention have a kinematic viscosity at 100°C ranging from 1.5 to 35 cSt.
- base oils can be chosen from base oils conventionally used in the field of lubricating oils, such as mineral, synthetic or natural, animal or vegetable oils or mixtures thereof.
- base oil(s) are non-aqueous base oils.
- 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 may in particular be oils of mineral or synthetic origin 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, desalphating, solvent dewaxing, hydrotreating, hydrocracking, hydroisomerization and hydrofinishing .
- 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 glycol (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 glycol (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 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 the PAO can also range from 100 to 600 Da, from 150 to 600 Da, or even from 200 to 600 Da.
- the lubricating composition according to the invention may also comprise all types of functional additives, distinct from the anti-wear of formula (I) and distinct from the anti-wear of the phosphite type defined in the present invention, suitable for use in a lubricant for motor vehicles, in particular for manual or automatic transmission of motor vehicles.
- Such additives can be chosen from detergents, dispersants, antioxidants, pour point depressants, anti-foaming agents, water improvers. viscosity index, and their mixtures.
- the composition according to the invention comprises at least one functional additive chosen from detergents, dispersants, antioxidants, pour point depressants, anti-foaming agents, viscosity index improvers, and mixtures thereof.
- these additional functional additives represent (in total) from 0.1 to 15% by weight, preferably from 1 to 10% by weight, of the total weight of the lubricating composition.
- additives can be introduced in isolation and/or in the form of a mixture like those already available for sale for formulations of commercial lubricants for vehicle engines, with a performance level as defined by T ACEA (Association European Automobile Manufacturers) and/or TAPI (American Petroleum Institute), well known to those skilled in the art.
- T ACEA Association European Automobile Manufacturers
- TAPI American Petroleum Institute
- the lubricating composition according to the invention may comprise at least one antioxidant additive.
- the antioxidant additive generally makes it possible to delay the degradation of the 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 composition.
- Antioxidant additives act in particular as free radical inhibitors or hydroperoxide destroyers.
- antioxidant additives mention may be made of phenolic-type antioxidant additives and amine-type antioxidant additives.
- Phenolic antioxidant additives can be ash-free or in the form of neutral or basic metal salts.
- the antioxidant additives may in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, diphenylamines substituted by at least one alkyl group in Cl -Cl 2, 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 vicinal carbon of the carbon carrying the alcohol function is substituted by at least one alkyl group in Ci-Cio, preferably an alkyl group in CI-C ⁇ , preferably a C4 alkyl group, preferably by the tert-butyl group.
- Amino compounds are another class of antioxidant additives that can be used, possibly in combination with phenolic antioxidant additives.
- amino compounds are aromatic amines, for example aromatic amines of formula NR 10 R n R 12 in which R 10 represents an aliphatic group or an aromatic group, optionally substituted, R 11 represents an aromatic group, optionally substituted, R 12 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 13 S(O) Z R 14 in which R 13 represents an alkylene group or an alkenylene group, R 14 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 salts and carboxylic acids, copper phenates, copper acetylacetonates. Copper I and II salts, succinic acid or anhydride salts can also be used.
- the lubricating composition according to the invention may contain all types of antioxidant additives known to those skilled in the art.
- the lubricating composition according to the invention comprises at least one ash-free antioxidant additive.
- the lubricating composition according to the invention may comprise from 0.5 to 2% by weight of at least one antioxidant additive, relative to the total weight of the composition.
- the lubricating composition according to the invention may also comprise at least one detergent additive.
- Detergent additives generally help reduce the formation of deposits on the surface of metal parts by dissolving secondary oxidation and combustion products.
- the detergent additives which can be used in the lubricating 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 or alkaline earth metal.
- the detergent additives are preferably chosen from alkali metal or alkaline earth metal salts of carboxylic acids, salicylates, naphthenates, as well as phenate salts.
- the alkali and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
- metal salts generally include the metal in stoichiometric quantity or in excess, therefore in quantity greater than the narrow stoichiometric quantity.
- overbased detergent additives the excess metal providing the overbased character to the detergent additive is then generally in the form of a metal salt insoluble in the oil, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate .
- the lubricating composition suitable for the invention may for example comprise from 0.5 to 4% by weight of detergent additive, relative to the total weight of the composition.
- the lubricating composition according to the invention may comprise at least one dispersing agent.
- the dispersant will ensure the maintenance in suspension and the evacuation of insoluble solid contaminants consisting of secondary oxidation products which form when the lubricating composition is in use.
- the dispersing agent can be chosen from Mannich bases, succinimide type compounds, such as polyisobutylene succinimide (PIBSI), optionally borated, or borated dispersants other than succinimides, preferably from borated dispersants, more preferably from borated succinimide dispersants, particularly borated PIB SIs.
- succinimide type compounds such as polyisobutylene succinimide (PIBSI)
- PIBSI polyisobutylene succinimide
- borated dispersants other than succinimides preferably from borated dispersants, more preferably from borated succinimide dispersants, particularly borated PIB SIs.
- the lubricating composition according to the invention may further comprise at least one anti-foaming agent.
- the lubricating composition according to the invention preferably does not comprise additives comprising sulfur.
- additives chosen from dispersants, antioxidants, pour point depressants, anti-foaming agents and their mixtures.
- the lubricating composition according to the invention comprises, or even consists of:
- anti-wear additive(s) corresponding to formula (I); - optionally from 0.05 to 5% by weight, in particular from 0.1% to 2% by weight, of anti-wear additive(s) chosen from phosphites containing 1 to 24 carbon atoms;
- lubricating composition optionally from 0.1 to 15% by weight, preferably from 1 to 10% by weight, of one or more functional additives, preferably chosen from dispersants, antioxidants, pour point depressants, agents anti-foam and their mixtures, relative to the total weight of the lubricating composition.
- one or more functional additives preferably chosen from dispersants, antioxidants, pour point depressants, agents anti-foam and their mixtures, relative to the total weight of the lubricating composition.
- the lubricating composition according to the invention comprises:
- additive(s) chosen from phosphites comprising from 1 to 24 carbon atoms, preferably from 4 with 12 carbon atoms, preferably among phosphites comprising two alkyl groups each having from 2 to 6 carbon atoms;
- lubricating composition optionally from 0.1 to 15% by weight, preferably from 1 to 10% by weight, of one or more functional additives, preferably chosen from dispersants, antioxidants, pour point depressants, agents anti-foam and their mixtures, relative to the total weight of the lubricating composition.
- one or more functional additives preferably chosen from dispersants, antioxidants, pour point depressants, agents anti-foam and their mixtures, relative to the total weight of the lubricating composition.
- the lubricating composition according to the invention comprises, or even consists of:
- anti-wear additive(s) chosen from phosphites containing 1 to 24 carbon atoms;
- composition comprising less than 10 ppm by weight of sulfur, relative to the total weight of the lubricating composition.
- the lubricating composition according to the invention comprises, or even consists of:
- lubricating composition optionally from 0.1 to 15% by weight, preferably from 1 to 10% by weight, of one or more functional additives, preferably chosen from dispersants, antioxidants, pour point depressants, agents anti-foam and their mixtures, relative to the total weight of the lubricating composition.
- one or more functional additives preferably chosen from dispersants, antioxidants, pour point depressants, agents anti-foam and their mixtures, relative to the total weight of the lubricating composition.
- the lubricating composition according to the invention comprises, or even consists of:
- anti-wear additive(s) corresponding to formula (I) where R and/or R 1 are chosen independently l one from the other among the hydrocarbon groups constituted by:
- alkyl chain comprising from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms
- anti-wear additive(s) chosen from phosphites comprising two alkyl groups each having from 2 to 6 atoms of carbon ;
- the lubricating composition according to the invention comprises, or even consists of:
- anti-wear additive(s) chosen from phosphites containing 1 to 24 carbon atoms;
- dispersant(s) preferably chosen from borated dispersants
- - optionally from 0.1 to 10% by weight, preferably from 0.5 to 5% by weight, of one or more functional additives, preferably chosen from antioxidants, pour point depressants, anti -foam and their mixtures, relative to the total weight of the lubricating composition.
- one or more functional additives preferably chosen from antioxidants, pour point depressants, anti -foam and their mixtures, relative to the total weight of the lubricating composition.
- R and/or R 1 are chosen independently one from the other among the hydrocarbon groups constituted by:
- alkyl chain comprising from 8 to 20 carbon atoms, preferably from 10 to 18 carbon atoms
- anti-wear additive(s) chosen from phosphites containing 1 to 24 carbon atoms;
- the present invention also relates to the use of the lubricating composition according to the invention for lubricating the transmissions of motor vehicles, in particular the gears of the transmissions.
- Transmissions can be manual or automatic transmissions.
- the lubricating composition according to the invention is used to reduce the wear of a mechanical part of a motor vehicle transmission, in particular of a motor vehicle gear.
- the lubricating composition according to the invention makes it possible to reduce the wear of the transmission gears.
- the lubricating composition according to the invention is used to reduce the spalling of a mechanical part of a motor vehicle transmission, in particular of a motor vehicle gear.
- the lubricating composition according to the invention is used to both reduce wear and reduce chipping of a mechanical part of a motor vehicle transmission, in particular of a vehicle gear automobiles.
- the invention also relates, according to another of its aspects, to a method of lubricating at least one part of a transmission of a motor vehicle, in particular a gear of a motor vehicle, comprising at least one step bringing at least said part into contact with a lubricating composition as described above.
- the invention also relates, according to another of its aspects, to a process for improving the durability of a lubricating composition, said process comprising a step of mixing at least one anti-wear additive of formula (I) such as defined in the present invention, with at least one base oil, preferably said anti-wear additive of formula (I) is further mixed with an anti-wear additive chosen from phosphites comprising from 1 to 24 carbon atoms.
- Example 1 Preparation of lubricating compositions
- the lubricating compositions were prepared by mixing the ingredients at a temperature of approximately 40°C, according to methods well known to those skilled in the art.
- the lubricating compositions which were prepared and tested are detailed in Tables 2 and 3 below.
- the elemental phosphorus and sulfur contents were calculated based on the elemental contents in the ingredients and are also shown in Tables 2 and 3 in ppm by weight.
- the lubricating compositions tested have a viscosity at 100°C of approximately 4.5 cSt measured according to the ASTM D445 standard.
- the base oils are Group III base oils
- the anti-wear 12 corresponds to formula (I) where R and R 1 are two linear C18 alkyl chains and where at least one of the radicals R or R 1 also comprises 5 ethoxylated units,
- the anti-wear 13 corresponds to formula (I) where R and R 1 are linear alkyl chains in Cl 8 and where at least one of the radicals R or R 1 also comprises 5 ethoxylated units
- the anti- wear 14 comprises a mixture of compounds corresponding to formula (I) where R and R 1 are linear C10-C16 alkyl chains and where at least one of the radicals R or R 1 also comprises 5 ethoxylated units
- the dispersant is a borated PIB SI dispersant making it possible to provide approximately 85 ppm of boron
- the anti-corrosion is a triazole derivative
- the additive package contains a pour point improver and an anti-foam.
- Example 2 Studies of the performance of lubricating compositions
- the average coefficient of friction was determined on an MTM machine (mini traction machine) with the following conditions:
- compositions according to the invention CI5 to CI9 have very good load capacity. These load capacity values (FZG) demonstrate the very good durability of the lubricating composition, particularly for use in transmissions.
- the compositions according to the invention CI5 to CI9 also have a lower average coefficient of friction, demonstrating better lubricating properties.
- the anti-wear products corresponding to formula (I) as defined in the present invention make it possible to improve the performance of the lubricating composition. More particularly, the anti-wear corresponding to formula (I) as defined in the present invention have better properties than the anti-wear Cl and C2 of the state of the art.
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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 |
|---|---|---|---|
| FR2212191A FR3142197A1 (fr) | 2022-11-23 | 2022-11-23 | Composition lubrifiante pour transmission automobile. |
| PCT/EP2023/082761 WO2024110561A1 (fr) | 2022-11-23 | 2023-11-22 | Composition lubrifiante pour transmission automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4623052A1 true EP4623052A1 (fr) | 2025-10-01 |
Family
ID=85176031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23809644.0A Pending EP4623052A1 (fr) | 2022-11-23 | 2023-11-22 | Composition lubrifiante pour transmission automobile |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20260234488A1 (fr) |
| EP (1) | EP4623052A1 (fr) |
| JP (1) | JP2025536592A (fr) |
| KR (1) | KR20250112242A (fr) |
| CN (1) | CN120225640A (fr) |
| FR (1) | FR3142197A1 (fr) |
| MX (1) | MX2025005181A (fr) |
| WO (1) | WO2024110561A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2806094A1 (fr) * | 2000-03-09 | 2001-09-14 | Ceca Sa | Lubrifiant multifonctionnel a base de composes phosphores et de composes soufres |
| US20050065043A1 (en) * | 2003-09-23 | 2005-03-24 | Henly Timothy J. | Power transmission fluids having extended durability |
| EP3473695A1 (fr) * | 2016-06-21 | 2019-04-24 | KYB Corporation | Fluide hydraulique |
| US10640723B2 (en) | 2018-03-16 | 2020-05-05 | Afton Chemical Corporation | Lubricants containing amine salt of acid phosphate and hydrocarbyl borate |
| US11066622B2 (en) | 2019-10-24 | 2021-07-20 | Afton Chemical Corporation | Synergistic lubricants with reduced electrical conductivity |
| FR3112793B1 (fr) * | 2020-07-22 | 2023-04-28 | Total Marketing Services | Composition lubrifiante pour transmission automobile. |
| EP4263767B1 (fr) * | 2020-12-15 | 2024-08-21 | Totalenergies Onetech | Utilisation d'un composé ester de phosphate d'un alcool éthoxylé dans une composition lubrifiante pour empêcher la corrosion et/ou la tribocorrosion de pièces métalliques dans un moteur |
-
2022
- 2022-11-23 FR FR2212191A patent/FR3142197A1/fr active Pending
-
2023
- 2023-11-22 KR KR1020257014614A patent/KR20250112242A/ko active Pending
- 2023-11-22 US US19/126,387 patent/US20260234488A1/en active Pending
- 2023-11-22 EP EP23809644.0A patent/EP4623052A1/fr active Pending
- 2023-11-22 CN CN202380077286.0A patent/CN120225640A/zh active Pending
- 2023-11-22 WO PCT/EP2023/082761 patent/WO2024110561A1/fr not_active Ceased
- 2023-11-22 JP JP2025525377A patent/JP2025536592A/ja active Pending
-
2025
- 2025-05-02 MX MX2025005181A patent/MX2025005181A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MX2025005181A (es) | 2025-07-01 |
| CN120225640A (zh) | 2025-06-27 |
| US20260234488A1 (en) | 2026-08-13 |
| WO2024110561A1 (fr) | 2024-05-30 |
| JP2025536592A (ja) | 2025-11-07 |
| FR3142197A1 (fr) | 2024-05-24 |
| KR20250112242A (ko) | 2025-07-23 |
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