EP4168519A1 - Composition aqueuse pour la lubrification des systemes de motorisation - Google Patents
Composition aqueuse pour la lubrification des systemes de motorisationInfo
- Publication number
- EP4168519A1 EP4168519A1 EP21732933.3A EP21732933A EP4168519A1 EP 4168519 A1 EP4168519 A1 EP 4168519A1 EP 21732933 A EP21732933 A EP 21732933A EP 4168519 A1 EP4168519 A1 EP 4168519A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricating composition
- composition according
- weight
- aqueous lubricating
- mass
- 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
Links
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
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/02—Water
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
- C10M2207/0225—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/046—Hydroxy ethers
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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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
- C10M2209/1045—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
- C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only 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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
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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
- C10M2223/042—Metal salts thereof
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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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/02—Groups 1 or 11
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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
- C10N2030/54—Fuel economy
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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
- C10N2040/04—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
- C10N2040/25—Internal-combustion engines
Definitions
- the present invention relates to the field of lubricating compositions, in particular lubricating compositions for lubricating mechanical systems, such as bearings, gears, bearings or motors.
- the present invention relates to aqueous-based lubricating compositions for the lubrication of a mobile or stationary motor system.
- Lubricating compositions also called “lubricants”, are commonly used in mechanical systems, to reduce the friction between the parts and thus protect the parts against wear. In addition to the phenomena of wear, friction can oppose the relative movement of the parts in contact and induce energy losses detrimental to optimal operation of the mechanical system.
- Lubricants are used for multiple applications, for example for metalworking, in particular for metal deformation operations, for gas or steam turbines in the fields of aeronautics, naval, rail transport. and power generation, for propulsion systems of motor vehicles, for example for the lubrication of bearings, gears, an engine, etc.
- the formulation of lubricants represents an important issue insofar as they make it possible to act on fuel consumption, and therefore on carbon dioxide emissions. , via their impact on the frictional forces generated between the various components of motor vehicles.
- hydrocarbon-based lubricants are hydrocarbon-based lubricants. These hydrocarbon-based lubricants are conventionally composed of one or more base oils, which are generally associated with additives dedicated to stimulating the lubricating performance of base oils, such as, for example, friction modifying additives. On the other hand, the friction between the moving parts generates heat, and it may be necessary to jointly provide cooling of the mechanical systems. This cooling is typically provided by a cooling fluid, distinct from the hydrocarbon lubricant, such as, for example, air, an aqueous fluid, such as water or else by a mixture of water and a glycol.
- a cooling fluid distinct from the hydrocarbon lubricant, such as, for example, air, an aqueous fluid, such as water or else by a mixture of water and a glycol.
- Lubricating compositions based on water have already been studied.
- document US 2012/0149616 proposes an aqueous lubricant comprising, in addition to water, water-soluble polyalkylene glycols, emulsifiers, antifreeze additives of alkylene glycol or glycerol type, anti-corrosion additives, anti-foam additives and friction reducing additives.
- the present invention aims to provide a new water-based composition, exhibiting tribological properties suitable for its use for the lubrication of mechanical systems.
- the present invention relates, according to a first of its aspects, to an aqueous lubricating composition for the lubrication of a stationary or mobile motorization system, comprising at least:
- At least one antifreeze compound chosen from glycols, preferably alkylene glycols; glycerol; diglycerol; triglycerol, and mixtures thereof; and
- aqueous composition is intended to denote a composition comprising water as base fluid, in other words as predominant solvent.
- the water preferably deionized, preferably represents more than 35% by mass of the total mass of the lubricating composition.
- osmosis water is intended to denote water which has undergone purification, in particular by a reverse osmosis process, in order to reduce the content of organic and / or mineral compounds, for example to a lower content. at 5.0% by weight, preferably less than 1.0% by weight.
- the expressions “demineralized water” or even “ultrapure water” will be considered as equivalent or synonymous with the expression “reverse osmosis water”.
- the reverse osmosis water can be “deionized water”, in other words water which has undergone purification in order to reduce the content of ions, such as the Ca 2+ and HCO 3 ions generally present in the water.
- deionized water does not contain ions.
- aqueous lubricant composition or “aqueous lubricant” will denote a lubricating composition according to the invention, intended for lubricating moving parts in a mechanical system, and more particularly intended for lubricating a motorization system. mobile or stationary.
- motorization system within the meaning of the present invention, is meant a system comprising all the mechanical parts necessary for the targeted mobile or stationary application and including at least one motor. It may be a combustion, gas, in particular hydrogen, ammonia, electric or hybrid engine system, depending on the nature of the engine (s) included in the engine system: combustion engine, gas engine, in particular hydrogen, ammonia and / or electric.
- a “mobile” motorization system is more particularly a motorization system implemented in vehicles, including light vehicles, heavy-duty vehicles, so-called “off-road” mobile machines, or even marine vehicles.
- a mobile motorization system thus corresponds more particularly to the propulsion system of a vehicle.
- propulsion system within the meaning of the present invention is understood to denote a system comprising the mechanical parts necessary for propelling a vehicle.
- the propulsion system more particularly includes an engine, a transmission and possibly a battery.
- the battery itself is generally made up of a set of electric accumulators, called cells.
- the mobile motorization system is a propulsion system for an electric or hybrid vehicle.
- the propulsion system 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.
- 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.
- a "stationary" motorization system within the meaning of the invention is a motorization system including a stationary motor. It can, for example, find applications in devices for the production of electrical energy. It may in particular be a gas engine system, in particular a stationary gas engine.
- the inventors have discovered that it is possible, by supplementing water with the specific combination of at least one antifreeze compound chosen from glycols, at least one phosphorus compound and at least one polyalkylene glycol, to access an aqueous formulation exhibiting excellent tribological properties.
- an aqueous lubricating composition according to the invention thus exhibits performances in terms of reduction of the friction between the moving parts in a mechanical system, which are equivalent, or even improved, compared to those achieved using a lubricant.
- aqueous compositions according to the invention thus prove to be suitable for use as lubricants, for the lubrication of moving parts in a mechanical system, more precisely for the lubrication of a mobile or stationary motor system. They can thus be used in all systems and for all applications, replacing conventional hydrocarbon lubricants. Examples of application are given in the remainder of the text.
- the present application relates, according to another of its aspects, G use of an aqueous lubricating composition according to the invention, for the lubrication of parts in movement in a mechanical system, more precisely for the lubrication of a mobile or stationary motorization system.
- the present application relates in particular to the use of an aqueous lubricating composition according to the invention for the lubrication of a mobile motorization system, in particular of a vehicle propulsion system, and more particularly of a vehicle propulsion system. electric or hybrid vehicle.
- the present application also relates to the use of an aqueous lubricating composition according to the invention, for reducing the friction between the moving parts in a mechanical system, in particular in a mobile or stationary motorization system, more particularly in a propulsion system.
- vehicle as well as G use of an aqueous lubricating composition according to the invention to reduce the wear of parts in a mechanical system, in particular in a mobile or stationary motorization system, more particularly in a vehicle propulsion system.
- the invention also relates, according to another of its aspects, to a method of lubricating a mechanical system (or parts in a mechanical system), in particular in a mobile or stationary motorization system, more particularly in a propulsion system.
- vehicle comprising at least one step of bringing at least one part of said mechanical system into contact with an aqueous lubricating composition according to the invention.
- a composition according to the invention combines good cooling properties linked to the presence of water, and good tribological properties, in particular reduction of friction and resistance to wear.
- an aqueous composition according to the invention can advantageously perform the dual function of lubrication and cooling.
- the present invention also relates to the use of an aqueous lubricating composition according to the invention, for the lubrication and cooling of moving parts in a mechanical system, in particular in a mobile or stationary motorization system, more particularly in a vehicle propulsion system.
- the present application relates in particular to the use of an aqueous lubricating composition according to the invention, for the lubrication and cooling of a cooling system.
- mobile motorization in particular of a vehicle propulsion system, and more particularly of an electric or hybrid vehicle propulsion system.
- a composition according to the invention has the advantage of being easy to formulate. It has, in addition to the joint cooling and lubricating properties, good stability. Advantageously, it also has good anticorrosion properties.
- an aqueous lubricating composition can be used for the lubrication of an engine or the transmission in a motor vehicle. These uses include contacting at least one element of the engine or transmission, in particular the gearbox or axle, with an aqueous lubricating composition according to the invention.
- An aqueous lubricating composition according to the invention advantageously makes it possible to act effectively on fuel consumption via its impact on the frictional forces generated between the various components of motor vehicles.
- an aqueous lubricating composition is found to be particularly advantageous for reducing friction in gearboxes, in axle differentials and / or in the cylinder head.
- a lubricating composition according to the invention not only makes it possible to reduce wear, but also to limit the energy losses responsible for overconsumption of fuel.
- An aqueous lubricating composition according to the invention thus advantageously exhibits good properties in terms of reducing the fuel consumption of motor vehicles, also called “Fuel Eco” properties and, in fact, participates in the reduction of CO 2 emissions. .
- the invention thus relates, according to another of its aspects, to the use of an aqueous lubricating composition according to the invention for reducing the fuel consumption of an engine, in particular of a vehicle engine, lubricated by means of this composition. It also relates to G use of an aqueous lubricating composition according to the invention for reducing the fuel consumption of a vehicle equipped with a transmission, in particular a axle or a gearbox, lubricated by means of this composition. .
- the percentages are weight percentages. The percentages are therefore expressed by mass relative to the total mass of the composition. Temperature is expressed in degrees Celsius unless otherwise specified, and pressure is atmospheric pressure, unless otherwise specified.
- Ligure 1 represents the friction torques measured by a "cylinder head” test for a composition in accordance with the invention (II) and a comparative composition (Cl), over a speed range ranging from 400 rev / min to 2000 rev / min.
- an aqueous lubricating composition according to the invention is a formulation comprising water, in particular deionized water, as the main solvent.
- an aqueous lubricating composition according to the invention comprises at least 35% by weight of water, in particular deionized water, preferably between 35% and 90% by weight, more preferably between 40% and 75% by weight, relative to to the total mass of the composition.
- water in addition to its role as a solvent, water provides access to a lubricating composition exhibiting good cooling properties, and which can be used as a cooling fluid for moving parts in a mechanical system.
- the water used in an aqueous lubricating composition according to the invention is deionized water, also called demineralized water.
- Deionized water does not contain ions, such as the Ca 2+ and HCO 3 ions commonly found in water, which are responsible for the conduction of electricity in water.
- deionized water is therefore particularly advantageous in the context of the use of the aqueous lubricant according to the invention for applications requiring a fluid which conducts little, if at all, electricity, such as for example for use of the aqueous lubricant for the lubrication and cooling of mechanical systems comprising an electrical circuit, for example electric or hybrid motors, in particular in electric or hybrid vehicles.
- An aqueous lubricating composition according to the invention therefore differs from lubricants conventionally used in mechanical systems, which comprise a majority proportion of one or more base oils not soluble in water.
- oil insoluble in water is meant in particular an oil which does not dissolve substantially in water at room temperature (at about 25 ° C).
- an oil which is insoluble in water has a solubility in water of less than 0.2 g / L at room temperature.
- an aqueous lubricating composition according to the present invention comprises less than 5% by mass of base oil (s) not soluble in water, preferably less than 2% by mass, more preferably less than 1% by mass. , relative to the total mass of the composition.
- an aqueous lubricating composition according to the invention is completely free from oil which is insoluble in water.
- an aqueous lubricating composition according to the invention comprises at least one polyalkylene glycol.
- the polyalkylene glycols are chosen from water-soluble polyalkylene glycols.
- water-soluble is intended to denote a polyalkylene glycol having a solubility in water of at least 10 g / L, preferably of at least 500 g / L, in water at ambient temperature (approximately 25 ° C).
- the polyalkylene glycols can be more particularly formed of C1-C4, preferably C1-C3, more particularly C2-C3 alkylene oxide units.
- a polyalkylene glycol used in an aqueous lubricating composition according to the invention comprises at least 50% by weight, in particular at least 80% by weight, more preferably at least 90% by weight of propylene oxide and / or oxide units.
- 'ethylene It can be a copolymer, in particular random, ethylene oxide / propylene oxide.
- a polyalkylene glycol used in an aqueous lubricating composition according to the invention has an average molar mass by mass (Mn) of between 1000 and 20,000 g. mol 1 , preferably between 5,000 and 15,000 g. mol 1 .
- the number average molar mass can be measured by gel permeation chromatography (GPC).
- a polyalkylene glycol used in an aqueous lubricating composition according to the invention has a kinematic viscosity measured at 100 ° C (KV100), according to the ASTM D445 standard, of between 100 and 5000 mm 2 / s, in particular between 150 and 3000 mm 2 / s, and more particularly between 500 and 3000 mm 2 / s.
- KV100 kinematic viscosity measured at 100 ° C
- a polyalkylene glycol used in an aqueous lubricating composition according to the invention has a kinematic viscosity measured at 40 ° C (KV40), according to the ASTM D445 standard, between 500 and 30,000 mm 2 / s, more particularly between 1,000 and 25,000 mm 2 / s, or even between 5,000 and 25,000 mm 2 / s.
- KV40 kinematic viscosity measured at 40 ° C
- the flash point of a polyalkylene glycol used in an aqueous lubricating composition according to the invention is preferably greater than or equal to 160 ° C, in particular greater than or equal to 220 ° C.
- the flash point can be measured by ISO 2592 or ASTM D92.
- a polyalkylene glycol used in an aqueous lubricating composition according to the invention has a viscosity index measured according to standard ASTM D2270, of between 100 and 800, preferably between 250 and 550.
- said polyalkylene glycol compound (s) can be used in an aqueous lubricating composition according to the invention in a content of at least 5.0% by weight, preferably between 5.0% and 50% by weight, more preferably between 10% and 40% by weight, in particular between 15% and 30% by weight, relative to the total weight of the composition.
- an aqueous lubricating composition according to the invention comprises at least one antifreeze compound chosen from glycols, preferably alkylene glycols; glycerol; diglycerol; triglycerol, and mixtures thereof.
- Glycols are diols in which the two hydroxyl groups are carried by different carbon atoms, preferably by vicinal carbon atoms.
- the glycols are alkylene glycols, in particular having 2 to 10 carbon atoms, in particular 2 to 6 carbon atoms.
- alkylene glycols in particular having 2 to 10 carbon atoms, in particular 2 to 6 carbon atoms.
- monoethylene glycol diethylene glycol and propylene glycol.
- the antifreeze compound can also be chosen from glycerol, diglycerol, triglycerol and their mixtures.
- the antifreeze compound used according to the invention is chosen from monoethylene glycol, diethylene glycol, propylene glycol, glycerol and their mixtures.
- the antifreeze compound is monoethylene glycol.
- the said antifreeze compound (s) can be used in an aqueous lubricating composition according to the invention in a content of at least 5.0% by weight, preferably between 5.0% and 35% by weight, more preferably. between 10% and 35% by weight, in particular between 15% and 30% by weight, relative to the total weight of the composition.
- An aqueous lubricating composition according to the invention comprises at least one phosphorus compound, that is to say a compound comprising at least one phosphorus atom.
- the phosphorus compounds considered according to the invention do not add sulfur.
- Said phosphorus compound (s) are advantageously used in a form soluble or emulsifiable in water, in particular in the form of ionic salts.
- the phosphorus compound can be chosen from amine phosphates; phosphates such as phosphate esters, in particular alkyl, alkenyl or aryl phosphates; polyphosphates; phosphonates such as esters of phosphonates, in particular alkyl, alkenyl or aryl phosphonates; polyphosphonates; carbamyl phosphates; phosphinates; and their mixtures.
- the phosphorus compound (s) are preferably present in an aqueous lubricating composition according to the invention in the form of salts, in particular in the form of phosphate, phosphonate or phosphinate ions neutralized by an appropriate counterion.
- the salts can be alkali or alkaline earth metal, ammonium, alkanolamines, in particular C2-C8, or alkaneamines, in particular C2-C8, phosphate, phosphonate or phosphinate salts.
- Examples of compounds which are particularly suitable for the invention are phosphate esters, phosphonate esters and their salts, preferably phosphate esters and their salts.
- the phosphate esters also called phosphoric acid esters, can be obtained by reaction of at least one alcohol, linear or branched, ethoxylated or not, preferably at least one alcohol comprising between 1 and 18 carbon atoms, in particular between 1 and 14 carbon atoms, in particular between 1 and 12 carbon atoms, more preferably between 2 and 8 carbon atoms, on phosphorus pentoxide of formula P2O5 or on phosphoric acid.
- the phosphorus compound used in an aqueous composition according to the invention is chosen from phosphate esters, in particular alkyl, alkenyl or aryl phosphates, in particular aryl phosphates, more particularly ethoxylated aryl phosphates.
- a compound can in particular be chosen from ethoxylated tridecyl alcohol phosphate ester, ethoxylated tristyrylphenol phosphate, and mixtures thereof.
- the phosphate esters can be used in acidic or neutralized form, in particular using a pH regulating additive, in particular chosen from ethanolamines, such as monoethanolamine (MEA), diethanolamine (DEA); triethanolamine (TEA), diglycolamine (DGA) isopropanolamines, such as monoisopropanolamine (MIPA), diisopropanolamine (DIPA) and triisopropanolamine (TIPA), ethylene amines, such as ethylene diamine (EDA), diethylene triamine (DETA), triethylene tetramine (TETA) and tetraethylene pentamine (TEPA), alkanolamines, such as methyldiethanol amine (MDEA), cyclamines, such as cyclohexylamine, 2-amino-2-ethyl- 1,3-propanediol, 2-amino-2-methyl-1-propanol and mixtures thereof.
- ethanolamines such as monoethanolamine (MEA), di
- the phosphorus compound used in an aqueous composition according to the invention is chosen from the salts of phosphate esters, in particular the alkali metal salts of phosphate esters, in particular of alkyl phosphate esters. or C1-C8 dialkyl.
- Such a compound can in particular be chosen from potassium butylphosphate, potassium dibutylphosphate and mixtures thereof.
- An aqueous lubricating composition according to the invention may comprise less than 5.0% by mass of phosphorus compound (s) as defined above, in particular in the form of salt (s), in particular salt (s) of phosphate esters, preferably from 0.1% to 5.0% by weight, more preferably from 0.5% to 3.0% by weight, relative to the total weight of the composition.
- an aqueous lubricating composition according to the invention can comprise a phosphorus content ranging from 0.016% to 0.40% by mass, in particular from 0.04% to 0.24% by mass and more particularly from 0 .08% to 0.16% by mass.
- an aqueous lubricating composition according to the invention can comprise a phosphorus content ranging from 0.010 to 0.40% by weight, in particular from 0.014 to 0.16% by weight and more particularly from 0.04% to 0.10. % by mass.
- the phosphorus content can be measured by ICP (for "Inductively Coupled Plasma” in English).
- an aqueous lubricating composition according to the invention comprises:
- - water preferably deionized water
- At least one antifreeze compound chosen from glycols, preferably alkylene glycols; glycerol; diglycerol; triglycerol, and mixtures thereof; preferably chosen from monoethylene glycol, diethylene glycol, propylene glycol, glycerol and their mixtures; and
- phosphorus compound in particular chosen from phosphate esters or their salts, in particular from:
- alkali metal salts of phosphate esters in particular of alkyl or dialkyl phosphate esters of Ci-Cs, for example chosen from potassium butylphosphate, potassium dibutylphosphate;
- alkenyl or aryl phosphates for example selected from ethoxylated tridecyl alcohol phosphate ester, ethoxylated tristyrylphenol phosphate; and
- An aqueous lubricating composition according to the invention can further comprise various additives.
- additives are compatible with their use in an aqueous medium.
- the additives are used in a form soluble or emulsifiable in water, for example in the form of salts or ionic liquids.
- Said additive (s) are of course chosen with regard to the intended application for the aqueous lubricant.
- a person skilled in the art will take care to choose the possible additives and / or their quantity in such a way that the advantageous properties of the aqueous lubricating composition according to the invention, in particular the tribological properties, in particular of reduction of friction and protection of parts against wear, and cooling, are not altered by the addition envisaged.
- Such additives can be more particularly chosen from anti-foam agents, biocides, pH regulators, corrosion inhibitors, anti-wear and / or extreme pressure additives, sequestering agents, metal passivators, colorants, dispersants, emulsifying agents, and mixtures thereof.
- an aqueous lubricating composition according to the invention can comprise one or more additives chosen from anti-foam agents, extreme pressure agents, corrosion inhibitors, pH regulators, metal passivators, colorants, and their mixtures.
- An aqueous lubricating composition according to the invention may more particularly comprise from 0.1 to 10% by mass of additives, in particular from 1.0 to 8.0% by mass of additives, relative to the total mass of the composition.
- An aqueous lubricating composition according to the invention can comprise at least one corrosion inhibitor agent.
- Corrosion inhibitors advantageously reduce or even prevent corrosion of metal parts.
- the nature of said corrosion inhibitor (s) can be chosen with regard to the metal to be protected against corrosion, such as aluminum, steel, galvanized steel, yellow metals, for example copper or brass.
- the inorganic corrosion inhibitors may be mentioned nitrites, sulphites, silicates, borates, sodium, potassium, calcium or magnesium phosphates, alkali metal phosphates, hydroxides, molybdates, sulphates of zinc, magnesium or nickel.
- alkanolamines such as triethanolamine
- aliphatic monocarboxylic acids in particular having from 4 to 15 carbon atoms, for example octanoic acid
- aliphatic dicarboxylic acids having from 4 to 15 atoms.
- carbon for example decane dioic acid, undecane dioic acid, dodecane dioic acid or mixtures thereof
- polycarboxylic acids optionally neutralized with triethanolamine, such as l, 3,5-triazine-2,4,6-tri- (6-aminocaproic) acid
- alkanoylamidocarboxylic acids in particular isononanoylamidocaproic acid, and mixtures thereof.
- Borated amides, products of the reaction of amines or amino alcohols with boric acid can also be used.
- An aqueous lubricating composition according to the invention can in particular comprise from 0.1% to 5% by mass of corrosion inhibitor (s), preferably from 0.5% to 4% by mass, more preferably from 1% to 2.5. % by mass, relative to the total mass of the composition.
- corrosion inhibitor s
- An aqueous lubricating composition according to the invention can comprise at least one antiwear and / or extreme pressure additive. Their function is to reduce wear and the coefficient of friction, or to prevent metal-to-metal contact by forming a protective film adsorbed on these surfaces.
- anti-wear additives there is a wide variety of anti-wear additives, among which may be mentioned those chosen from phosphosulfur additives such as metal alkylthiophosphates or their salts.
- Additives which do not provide phosphorus may also be suitable, such as, for example, polysulfides, in particular sulfur-containing olefins.
- an aqueous lubricating composition according to the invention comprises at least one extreme pressure additive chosen from sulfur-containing fatty acids and dimercaptothiadiazoles, preferably used in their neutralized, emulsifiable or soluble form. water.
- an aqueous lubricating composition according to the invention comprises at least one extreme pressure additive of the sulfur fatty acid type, preferably in a neutralized form, in particular by inorganic basifying agents or alkanolamines.
- the sulfur-containing fatty acids can contain from 8 to 22 carbon atoms, preferably from
- the quantity of sulfur according to standard ASTM D2622 provided by said sulfur-containing fatty acid (s) may be between 5% and 30% by weight, in particular between 10% and 20% by weight.
- the amount of active sulfur at 150 ° C according to the ASTM D 1662 standard provided by the said sulfur fatty acid (s) in the aqueous lubricating composition according to the invention is greater than or equal to 2% by mass, in particular between 5 and 10% by mass, relative to the total mass of the lubricating composition.
- active sulfur is understood to mean the sulfur that a chemical compound is capable of yielding or of liberating when this compound is placed under the conditions of standard ASTM D1662.
- ASTM D-1662 standard defines an active sulfur content of a compound at a given temperature as a difference expressed as a percentage by weight of the sulfur content before and after reacting a sample of this sulfur-containing compounds with a given quantity of copper for a fixed time.
- the amount of active sulfur at 150 ° C (ASTM DI 662) in the aqueous lubricating composition of the invention can influence its performance under extreme pressure.
- This quantity of active sulfur at 150 ° C. (ASTM DI 662) in the lubricating composition must not be too low, otherwise satisfactory extreme pressure behavior cannot be obtained. It must not be too high, to avoid a risk of corrosion, in particular with respect to metals and metal alloys, in particular with regard to copper.
- said sulfur-containing fatty acid (s) are preferably used in an aqueous lubricating composition according to the invention in their form neutralized by an alkalinizing agent, such as sodium hydroxide, potassium hydroxide, or an alkanolamine. , such as monoethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine and triisopropanolamine.
- an alkalinizing agent such as sodium hydroxide, potassium hydroxide, or an alkanolamine.
- An aqueous lubricating composition according to the invention may comprise between 0.01% and 10% by mass of anti-wear and / or extreme pressure additive (s), in particular sulfur-containing fatty acid (s), such as as defined above, preferably between 0.2% and 5% by weight, relative to the total weight of the composition.
- s anti-wear and / or extreme pressure additive
- sulfur-containing fatty acid such as as defined above
- An aqueous lubricating composition according to the invention can comprise at least one anti-foam additive. Defoamers help prevent foaming of the lubricating fluid.
- an anti-foaming agent based on polysiloxanes or on acrylate polymers.
- the anti-foam agent is chosen from three-dimensional siloxanes.
- the anti-foaming agents can be polar polymers such as polymethylsiloxanes or polyacrylates.
- an aqueous lubricating composition according to the invention may comprise from 0.001% to 3.0% by weight of anti-foaming additive (s), preferably from 0.005% to 1.5% by weight, more preferably from 0.01 % to 1.0% by mass, relative to the total mass of the lubricating composition.
- anti-foaming additive s
- An aqueous lubricating composition according to the invention can comprise at least one pH regulating additive, in particular an alkaline buffer.
- the pH regulator makes it possible to maintain the desired pH of the lubricating composition, in particular in order to preserve an alkaline pH, advantageously between 8 and 11, so in particular to prevent corrosion of the metal surfaces.
- the pH regulator can be chosen from the family of amines, in particular alkanolamines and amino alcohols.
- ethanolamines such as monoethanolamine (MEA), diethanolamine (DEA); triethanolamine (TEA), diglycolamine (DGA) isopropanolamines, such as mono-isopropanolamine (MIPA), diisopropanolamine (DIPA) and triisopropanolamine (TIPA), ethylene amines, such as ethylene diamine (EDA), diethylene triamine (DETA), triethylene tetramine (TETA) and tetraethylene pentamine (TEPA), alkanolamines, such as methyldiethanol amine (MDEA), cyclamines, such as cyclohexylamine, 2-amino-2-ethyl- 1,3-propanediol, 2-amino-2-methyl-1-propanol and mixtures thereof.
- MIPA monoethanolamine
- DGA diglycolamine
- MIPA mono-isopropanolamine
- DIPA diisopropanolamine
- TIPA triiso
- An aqueous lubricating composition according to the invention can in particular comprise from 0.1% to 10% by mass of additive (s) regulating the pH, preferably from 0.5% to 5% by mass, relative to the mass. total composition.
- An aqueous lubricating composition according to the invention can comprise at least one metal passivating agent.
- Metal passivators protect metal parts by promoting the formation of metal oxide on their surface.
- the metal passivating agents can for example be chosen from triazole derivatives, such as tetrahydrobenzotriazole (THBTZ), tolyltryazole (TTZ), benzotriazole (BTZ), amines substituted with a triazole group, such as N, N -bis (2-ethylhexyl) -l, 2,4-triazol-1-yl methanamine, N'-bis (2 ethylhexyl) -4-methyl-1H-benzotriazol-1-methyl-amine, N, N- bis (heptyl) -ar-methyl-lH-benzotriazole-l- methanamine, N, N-bis (nonyl) -ar-methyl-lH-benzotriazole-l-methanamine, N, N-
- the metal passivating agents are chosen from tetrahydrobenzotriazole (THBTZ), tolyltriazole (TTZ), benzotriazole (BTZ), and their salts, taken alone or as mixtures.
- An aqueous lubricating composition according to the invention may in particular comprise from 0.01% to 2.0% by weight of metal passivating agent (s), preferably from 0.1% to 1.0% by weight, more preferably from 0.2. % to 0.8% by mass, relative to the total mass of the composition.
- metal passivating agent s
- An aqueous lubricating composition according to the invention can comprise one or more dyes.
- the dyes can be natural or synthetic, generally organic.
- the dyes which can be used in an aqueous lubricating composition can be more particularly chosen from natural or synthetic water-soluble dyes, for example the dyes FDC Red 4, DC Red 6, DC Red 22, DC Red 28, DC Red 30, DC Red 33, DC Orange 4, DC Yellow 5, DC Yellow 6, DC Yellow 8, FDC Green 3, DC Green 5, FDC Blue 1, betanin (beet), carmine, a chlorophyllin, methylene blue, anthocyanins (enocianin, black carrot and hibiscus), caramel and riboflavin.
- An aqueous lubricating composition according to the invention can comprise between 0.01% and 2.0% by mass of dye (s), preferably between 0.01% and 1.5% by mass, more preferably between 0.02% and 1. , 0% by mass, relative to the total mass of the composition.
- An aqueous lubricating composition according to the invention can comprise one or more emulsifying agents, also called emulsifiers. Their function is to generate stable emulsions in water.
- the emulsifying agents can be more particularly nonionic, such as, for example, ethoxylated fatty alcohols, ethoxylated fatty acids, ethoxylated fatty amides; anionic, eg KOH, NaOH soaps; sulphonates; cationic, such as quaternary ammonium compounds; or else water-soluble or emulsifiable carboxylic acid esters.
- nonionic such as, for example, ethoxylated fatty alcohols, ethoxylated fatty acids, ethoxylated fatty amides
- anionic eg KOH, NaOH soaps
- sulphonates cationic, such as quaternary ammonium compounds
- cationic such as quaternary ammonium compounds
- an aqueous lubricating composition according to the invention can comprise from 0.01% to 10% by mass of emulsifying agent (s), preferably from 0.1% to 5.0% by mass, relative to the total mass. of the lubricating composition.
- emulsifying agent s
- An aqueous lubricating composition according to the invention can comprise at least one sequestering agent.
- Sequestering agents also called chelating agents, limit the encrustation of metal ions in the composition.
- sequestering agents examples include those derived from phosphonic acids and phosphonates, such as diethylenetriaminepentamethyl phosphonic acid (DTPMPA), amino tri (methylene phosphonic) acid (ATMP), acid hydroxyethane- diphosphonic acid (HEDP), 1-hydroxylethylidene 1,1-diphosphonate, 2-hydroxyethylamine di (methylene phosphonic) acid (HEAMBP), diethylene triamino penta (methylene phosphonic) (DTMP), organic acids multifunctional and hydroxy acids, such as ethylenediaminetetraacetic acid (EDTA), pteroyl- L-glutamic acid (PGLU), organic polyacids, such as maleic acid and polyaspartic acid, polysaccharides and carbohydrates, such as inulin, carboxymethylinulin and carboxymethylchitosan.
- DTPMPA diethylenetriaminepentamethyl phosphonic acid
- ATMP amino tri (methylene phosphonic) acid
- An aqueous lubricating composition according to the invention can comprise from 0.001% to 2.0% by mass of sequestering agent (s), preferably from 0.01% to 1.0% by mass, relative to the total mass of the composition. .
- An aqueous lubricating composition according to the invention can comprise at least one biocidal and / or fungicidal agent.
- Biocides and fungicides can be used to improve the biological stability of the composition by limiting the proliferation of bacteria, fungi and yeasts in the lubricating fluid.
- Such biocides can be chosen from parabens, aldehydes, reactive acetylacetone compounds, isothiazolinones, phenolic compounds, acid salts, halogenated compounds, quaternary ammoniums, certain alcohols and their mixtures.
- the biocides can be chosen from optionally substituted benzisothiazolinones (BIT), such as N-butyl-1,2-benzisothiazolin-3-one, methylisothiazolinones (MIT), mixtures of methylisothiazolinone and chloromethylisothiazolinone (MIT / CMIT), orthophenyl-phenol (OPP) or its sodium salt, 3-iodo-2-propynylbutylcarbamate (IPBC), chloro-cresol and N, N-methylene-bis-morpholine (MBM); sorbic acid; preferably from orthophenyl-phenol (OPP) or its sodium salt, 3-iodo-2-propynylbutylcarbamate, chloro-cresol, benzisothiazolinones and N, N-methylene-isomorpholine.
- BIT optionally substituted benzisothiazolinones
- BIT optionally substituted benzisothiazolin
- an aqueous lubricating composition according to the invention may in particular comprise between 0.01% and 10% by mass of biocide (s) and / or fungicide (s), preferably between 0.5% and 5.0% by mass, relative to the total mass of the composition.
- an aqueous lubricating composition according to the invention comprises:
- At least one antifreeze compound chosen from glycols, preferably alkylene glycols; glycerol; diglycerol; triglycerol, and mixtures thereof; preferably chosen from monoethylene glycol;
- phosphorus compound in particular chosen from phosphate esters and their salts, in particular from:
- alkali metal salts of phosphate esters in particular of alkyl or dialkyl phosphate esters of Ci-Cs, for example chosen from potassium butylphosphate, potassium dibutylphosphate;
- alkenyl or aryl phosphates for example selected from ethoxylated tridecyl alcohol phosphate ester, ethoxylated tristyrylphenol phosphate; and
- additives chosen from anti-foaming agents, extreme -pressure agents, corrosion inhibitors, pH regulators, metal passivators, colorants, emulsifying agents, sequestering agents, and mixtures thereof, the contents being expressed relative to the total mass of the lubricating composition.
- an aqueous lubricating composition according to the invention may consist of:
- At least one antifreeze compound chosen from glycols, preferably alkylene glycols; glycerol; diglycerol; triglycerol, and mixtures thereof; preferably chosen from monoethylene glycol;
- phosphorus compound in particular chosen from phosphate esters and their salts, in particular from: - alkali metal salts of phosphate esters, in particular of alkyl or dialkyl phosphate esters of C 1 -C 8, for example chosen from potassium butylphosphate, potassium dibutylphosphate;
- alkenyl or aryl phosphates for example selected from ethoxylated tridecyl alcohol phosphate ester, ethoxylated tristyrylphenol phosphate; and
- additives chosen from anti-foaming agents, extreme -pressure agents, corrosion inhibitors, pH regulators, metal passivators, colorants, emulsifying agents, sequestering agents, and mixtures thereof, the contents being expressed relative to the total mass of the lubricating composition; the remainder being water, preferably deionized water.
- a lubricating composition according to the invention has a kinematic viscosity, measured at 40 ° C (KV40), according to the standard ASTM D445 (ISO 3104) of between 10 and 1000 mm 2 / s, in particular between 20 and 300 mm 2 / s and more particularly between 25 and 80 mm 2 / s.
- KV40 kinematic viscosity
- the kinematic viscosity, measured at 100 ° C (KV100), according to standard ASTM D445 (ISO 3104), of a lubricating composition according to the invention can advantageously be between 3 and 50 mm 2 / s, in particular between 4 and 25 mm 2 / s and more particularly between 5 and 10 mm 2 / s.
- a lubricating composition according to the invention has a kinematic viscosity, measured at -10 ° C (KV-10), according to the standard ASTM D445 (ISO 3104) of between 200 and 600 mm 2 / s, in particular between 250 and 500 mm 2 / s and more particularly between 275 and 400 mm 2 / s.
- KV-10 kinematic viscosity
- an aqueous lubricating composition formulated according to the invention exhibits excellent tribological properties, in particular in terms of reduction of friction and resistance to wear, which makes it particularly well suited. for use as a lubricating fluid.
- Aqueous lubricating compositions can find various applications. In general, they can be used as lubricating fluid for systems and applications, replacing conventional hydrocarbon lubricants.
- An aqueous lubricating composition according to the invention can thus be used for the lubrication of gears, bearings, bearings, such as rolling or sliding bearings or even motors.
- an aqueous lubricating composition according to the invention can be used to lubricate mobile motorization systems, in particular for the lubrication of the various components of motor vehicles, in particular of the transmission or of an engine, in particular the cylinder head of an internal combustion engine, for example of a vehicle engine. It advantageously reduces friction between parts of a vehicle's propulsion system, such as the transmission and the engine.
- a lubricating composition according to the invention exhibits excellent properties in terms of reductions in fuel consumption (“Fuel Eco” properties).
- An internal combustion engine is generally divided into a part referred to as “top-engine” formed by at least one cylinder head assembled on the “bottom-engine”.
- a cylinder head is a part ensuring the top closure of the cylinder (s) of an engine. It distributes the intake gases in the combustion chamber, via the intake duct and intake valves, and the delivery of the combustion gases, via an exhaust duct and exhaust valves.
- an aqueous lubricating composition according to the invention makes it possible to significantly reduce the friction in a vehicle engine cylinder head.
- a lubricating composition according to the invention can also be used for the lubrication of transmission components of motor vehicles, in particular of transmission for light or heavy vehicles, for example gearboxes and / or axles.
- an aqueous lubricating composition according to the invention can be used for working metals, for example for the transformation of metals, for example aluminum, steel, galvanized steel, yellow metals.
- a lubricating composition according to the invention formed predominantly of water, has little toxicological impact, in particular for people. implementing this lubricant.
- water is the predominant solvent for an aqueous lubricant according to the invention, the treated surface is correctly lubricated.
- An aqueous lubricating composition according to the invention can also find an advantageous application for the lubrication of a propulsion system of an electric or hybrid vehicle, and more particularly of the engine, of the power electronics, of the transmission and / or of the transmission. drums.
- aqueous composition according to the invention can thus be used both as a cooling fluid and as a lubricant, for example in a propulsion system of an electric or hybrid vehicle.
- a composition according to the invention allows joint access to good properties in terms of cooling and lubrication of parts of the propulsion system of an electric or hybrid vehicle.
- a composition according to the invention makes it possible to cool and lubricate an electric motor of an electric or hybrid vehicle. It is particularly effective in cooling the power electronics and / or the rotor and / or the stator of an electric motor. It also lubricates the bearings located between the rotor and the stator of an electric motor of an electric or hybrid vehicle.
- a composition according to the invention makes it possible to ensure the lubrication of the transmission, when it is present, in particular the reduction gear, of an electric or hybrid vehicle. Also, a composition according to the invention advantageously makes it possible to effectively cool the battery present in an electric or hybrid vehicle.
- composition according to the invention it is for example possible, by using a single composition according to the invention, to ensure both the cooling of the battery and the lubrication of the transmission, in particular the reduction gear, in a electric or hybrid vehicle.
- the particular, advantageous or preferred characteristics of the composition according to the invention make it possible to define uses according to the invention which are also particular, advantageous or preferred.
- compositions in terms of friction gain is measured using a cylinder head bench.
- An engine cylinder head is driven by an electric generator to measure, by a torque sensor, the drive friction generated by the contact between the cam and the push rods.
- Rotation speed increase cycles are carried out for each temperature according to the following protocol:
- the values are calculated over the last 30 seconds of each soak, and are averages over the last 2 cycles of each temperature.
- compositions in terms of friction gain are evaluated using two 4-ball tests according to the ASTM D2783 standard, adapted with the following parameters:
- the extreme pressure measurement is carried out by rotating a stainless steel ball on three stainless steel balls also held stationary, the 4 balls being completely covered with a film of lubricant. A load is applied to the balls and gradually increased (from 10kg to 10kg) until the balls weld together. The balls are changed before each increase in load.
- the extreme pressure power corresponds to the value of the load from which the 4 balls are welded, preventing the rotation of the upper ball on the 3 others.
- the anti-wear properties of the lubricating compositions according to the invention were evaluated according to standard ASTM D2670, using a FALEX tribometer, under the following test conditions: specimens: FALEX steel; running-in time: 300 s; test duration: 180 min; break-in load: 445 N; test load: 1335 N; speed: 290 rpm; and ambient temperature.
- aqueous lubricating composition (II) according to the invention and a comparative lubricating composition (C1) based on base oils of group II and of group III, were formulated by simple mixing, at room temperature, of the following components, in the mass percentages indicated in Table 1 below. The percentages are therefore expressed by mass relative to the total mass of the composition.
- the friction torque induced by the aqueous lubricating composition according to the invention (II) is compared for each speed and each temperature with the torque induced by the comparative oily lubricating composition (Cl), in accordance with the measurement protocol defined above.
- the aqueous lubricating composition II according to the invention exhibits torque values that are always lower than those obtained for the comparative lubricating composition Cl.
- aqueous lubricating composition II exhibits a significant friction gain compared to the use of a lubricating composition comprising at least one hydrocarbon base fluid (comparative composition C1).
- aqueous lubricating compositions according to the invention have properties in terms of Fuel Eco improved compared to the lubricating compositions based on oil.
- Three lubricating compositions in accordance with the invention (12, 13 and 14) were formulated by simple mixing, at room temperature, of the following components, in the percentages by weight indicated in Table 2 below. The percentages are therefore expressed by mass relative to the total mass of the composition.
- compositions II, 12, 13 and 14 according to the invention exhibit high load values, and therefore very good extreme pressure properties. Also, compositions II, 12, 13 and 14 according to the invention exhibit low wear values and therefore very good antiwear properties.
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Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2006498A FR3111639B1 (fr) | 2020-06-22 | 2020-06-22 | Composition aqueuse pour la lubrification des systèmes mécaniques |
| PCT/EP2021/066816 WO2021259853A1 (fr) | 2020-06-22 | 2021-06-21 | Composition aqueuse pour la lubrification des systemes de motorisation |
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| EP4168519A1 true EP4168519A1 (fr) | 2023-04-26 |
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| EP21732933.3A Pending EP4168519A1 (fr) | 2020-06-22 | 2021-06-21 | Composition aqueuse pour la lubrification des systemes de motorisation |
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| Country | Link |
|---|---|
| US (1) | US12163105B2 (fr) |
| EP (1) | EP4168519A1 (fr) |
| JP (1) | JP2023532454A (fr) |
| KR (1) | KR20230025712A (fr) |
| CN (1) | CN116171317B (fr) |
| FR (1) | FR3111639B1 (fr) |
| MX (1) | MX2022016480A (fr) |
| WO (1) | WO2021259853A1 (fr) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3111639B1 (fr) | 2020-06-22 | 2022-08-19 | Total Marketing Services | Composition aqueuse pour la lubrification des systèmes mécaniques |
| FR3134813A1 (fr) * | 2022-04-20 | 2023-10-27 | Totalenergies Onetech | Composition lubrifiante aqueuse comprenant un ester de l’acide ascorbique |
| FR3134815B1 (fr) | 2022-04-20 | 2026-03-13 | Totalenergies Onetech | Composition aqueuse pour la lubrification et/ou le refroidissement d’un système de propulsion d’un véhicule électrique ou hybride |
| FR3134814A1 (fr) * | 2022-04-20 | 2023-10-27 | Totalenergies Onetech | Composition lubrifiante aqueuse comprenant un ester de l’acide gallique |
| CN115368959A (zh) * | 2022-07-28 | 2022-11-22 | 中科润美(青岛)材料科技有限公司 | 一种润滑抗燃液压液及其制备方法 |
| FR3144158A1 (fr) * | 2022-12-22 | 2024-06-28 | Totalenergies Onetech | Composition lubrifiante aqueuse |
| FR3144156A1 (fr) * | 2022-12-22 | 2024-06-28 | Totalenergies Onetech | Composition lubrifiante permettant de générer in situ lors de la lubrification du bisulfure de molybdène |
| FR3149901A1 (fr) * | 2023-06-13 | 2024-12-20 | Totalenergies Onetech | Utilisation d’une composition aqueuse pour lubrifier les parties internes d’un moteur à hydrogène ou à ammoniac |
| FR3149903A1 (fr) | 2023-06-13 | 2024-12-20 | Totalenergies Onetech | Utilisation de polyalkylène glycols à titre d’agents antigel dans une composition lubrifiante aqueuse |
| FR3149902A1 (fr) * | 2023-06-13 | 2024-12-20 | Totalenergies Onetech | Utilisation d’une composition aqueuse pour lubrifier les parties internes d’un moteur à hydrogène ou à ammoniac |
| WO2025087919A1 (fr) * | 2023-10-23 | 2025-05-01 | Totalenergies Onetech | Fluides à base d'eau utilisés en tant qu'huile de cardage |
| FR3156449A1 (fr) | 2023-12-12 | 2025-06-13 | Totalenergies Onetech | Utilisation d’huiles lubrifiantes au moins en partie re-raffinées pour réduire l’usure |
| FR3157432A1 (fr) * | 2023-12-22 | 2025-06-27 | Totalenergies Onetech | Utilisation d’une composition lubrifiante aqueuse dans un moteur à hydrogène fonctionnant en circuit fermé |
| EP4678721A1 (fr) | 2024-07-10 | 2026-01-14 | TotalEnergies OneTech | Composition lubrifiante aqueuse pour véhicules électriques ou hybrides |
| EP4678722A1 (fr) * | 2024-07-10 | 2026-01-14 | TotalEnergies OneTech | Huile pour engrenages industriels à base d'eau |
| EP4678720A1 (fr) * | 2024-07-10 | 2026-01-14 | TotalEnergies OneTech | Huile pour engrenages à base d'eau |
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| EP0034132B1 (fr) * | 1980-02-11 | 1984-11-07 | Berol Kemi Ab | Procédé pour le travail mécanique des métaux et concentrat de lubrifiant |
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| DE1218096B (de) * | 1961-07-26 | 1966-06-02 | Huels Chemische Werke Ag | Hydraulikfluessigkeit |
| NL8000569A (nl) | 1979-04-10 | 1980-10-14 | Pennwalt Corp | Smeermiddel ten gebruike bij het vervormen, alsmede werkwijze voor het vervormen van ferro- en niet-ferrometalen onder toepassing van dit smeermiddel. |
| DE3211352A1 (de) * | 1982-03-27 | 1983-09-29 | Hoechst Ag, 6230 Frankfurt | Wasserhaltiges schmiermittel fuer saegeketten |
| IL92315A (en) | 1989-11-15 | 1996-12-05 | Yeda Res & Dev | Preparation of Hypericin from Amodin Enron |
| JPH0778382B2 (ja) * | 1991-03-29 | 1995-08-23 | 工業技術院長 | 水素エンジン |
| US7195783B2 (en) | 1999-07-09 | 2007-03-27 | Fx Life Sciences International Gmbh | Hypericin and hypericum extract: specific T-type calcium channel blocker, and their use as T-type calcium channel targeted therapeutics |
| AT9168U1 (de) * | 2006-03-03 | 2007-05-15 | Magna Steyr Fahrzeugtechnik Ag | Betriebsbereites getriebe, betriebsflüssigkeit für ein solches und verfahren zu dessen erstinbetriebnahme |
| US20080280791A1 (en) * | 2007-05-01 | 2008-11-13 | Chip Hewette | Lubricating Oil Composition for Marine Applications |
| UA99147C2 (ru) | 2007-10-02 | 2012-07-25 | Кус Гмбх | Косметическая или фармацевтическая композиция местного применения |
| JP2009173814A (ja) * | 2008-01-25 | 2009-08-06 | Yushiro Chem Ind Co Ltd | 水系潤滑剤組成物及び加工方法 |
| KR20110015192A (ko) * | 2009-08-07 | 2011-02-15 | 동우 화인켐 주식회사 | 와이어 쏘우용 수용성 절삭액 조성물 |
| DE102009039626A1 (de) | 2009-09-01 | 2011-03-03 | KLüBER LUBRICATION MüNCHEN KG | Schmierstoffe auf Wasserbasis |
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| FR2984348B1 (fr) * | 2011-12-16 | 2015-02-27 | Total Raffinage Marketing | Compositions lubrifiantes pour transmissions |
| EP2878653B1 (fr) * | 2012-07-27 | 2018-08-01 | JX Nippon Oil & Energy Corporation | Composition d'huile lubrifiante, et procédé de lubrification d'element coulissant tout en empêchant l'élution de cuivre et de plomb |
| US10793802B2 (en) * | 2014-11-12 | 2020-10-06 | The Lubrizol Corporation | Mixed phosphorus esters for lubricant applications |
| JP6399592B2 (ja) * | 2014-11-19 | 2018-10-03 | 国立大学法人 岡山大学 | 水系潤滑液組成物 |
| US20170349762A1 (en) * | 2014-12-15 | 2017-12-07 | Dow Corning Toray Co., Ltd. | Water-based coating agent composition, water-based lubricating film paint composition comprising same, and member |
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| FR3111639B1 (fr) | 2020-06-22 | 2022-08-19 | Total Marketing Services | Composition aqueuse pour la lubrification des systèmes mécaniques |
-
2020
- 2020-06-22 FR FR2006498A patent/FR3111639B1/fr not_active Revoked
-
2021
- 2021-06-21 WO PCT/EP2021/066816 patent/WO2021259853A1/fr not_active Ceased
- 2021-06-21 KR KR1020237002306A patent/KR20230025712A/ko active Pending
- 2021-06-21 JP JP2022579918A patent/JP2023532454A/ja active Pending
- 2021-06-21 CN CN202180051449.9A patent/CN116171317B/zh active Active
- 2021-06-21 EP EP21732933.3A patent/EP4168519A1/fr active Pending
- 2021-06-21 US US18/011,932 patent/US12163105B2/en active Active
- 2021-06-21 MX MX2022016480A patent/MX2022016480A/es unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0034132B1 (fr) * | 1980-02-11 | 1984-11-07 | Berol Kemi Ab | Procédé pour le travail mécanique des métaux et concentrat de lubrifiant |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021259853A1 (fr) | 2021-12-30 |
| JP2023532454A (ja) | 2023-07-28 |
| US12163105B2 (en) | 2024-12-10 |
| FR3111639B1 (fr) | 2022-08-19 |
| FR3111639A1 (fr) | 2021-12-24 |
| MX2022016480A (es) | 2023-04-11 |
| KR20230025712A (ko) | 2023-02-22 |
| US20230250359A1 (en) | 2023-08-10 |
| CN116171317B (zh) | 2025-06-17 |
| CN116171317A (zh) | 2023-05-26 |
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