EP4551677A1 - Flüssigkeitszusammensetzung zur verwendung in elektrischen antrieben - Google Patents
Flüssigkeitszusammensetzung zur verwendung in elektrischen antriebenInfo
- Publication number
- EP4551677A1 EP4551677A1 EP23739197.4A EP23739197A EP4551677A1 EP 4551677 A1 EP4551677 A1 EP 4551677A1 EP 23739197 A EP23739197 A EP 23739197A EP 4551677 A1 EP4551677 A1 EP 4551677A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid composition
- composition according
- weight
- imide
- boron
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/022—Ethene
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/22—Alkylation reaction products with aromatic type compounds, e.g. Friedel-crafts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
-
- 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
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
-
- 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
-
- 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
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M2219/106—Thiadiazoles
-
- 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
- C10M2223/043—Ammonium or amine salts thereof
-
- 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
- C10M2223/047—Thioderivatives not containing metallic elements
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- 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
-
- 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
-
- 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
- C10N2030/14—Metal deactivation
-
- 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
-
- 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
- C10N2030/60—Electro rheological properties
-
- 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
-
- 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
-
- 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
- C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
- C10N2060/14—Chemical after-treatment of the constituents of the lubricating composition by boron or a compound containing boron
Definitions
- the invention relates to a liquid composition which is particularly suitable as a lubricating liquid in transmissions in a drive system of electrically driven vehicles, in particular exclusively electrically driven vehicles.
- the liquid composition according to the invention can additionally come into contact, at least temporarily, with power electronics and a battery cell and serve to cool the power electronics.
- Lubrication is carried out by immersion or forced lubrication.
- splash lubrication the teeth and tooth flanks of the gears are immersed in an oil sump as a result of the rotation of the gears during operation and thereby absorb the amount of lubricant required for lubrication.
- forced lubrication the lubricant is introduced into the mesh of the gears through active lubrication measures.
- the lubricant composition used for this must have physical and chemical properties such that the transmission gears to be lubricated (hereinafter referred to as gearing) can perform their force-transmitting function safely and permanently.
- gearing lubricating or gear oils that correspond to the application described above are formulated in such a way that rheologically suitable base fluids (the so-called base oils) are mixed with numerous active ingredients (the so-called additives), which improve the properties of the base oil system.
- the additives can be assigned to different chemical substance classes and work partly physically, partly chemically or through a combination of both modes of action.
- the viscosity of engine and transmission oils is determined uniformly for all SAE classes at 100 °C.
- the composition according to the invention has such favorable viscosity and shear stability properties that a corresponding classification in the previously valid SAE classification J 306 is not possible.
- the base oils include in particular mineral oils, semi-synthetic and synthetic oils and natural oils.
- Mineral oils are generally obtained from petroleum or crude oil through distillation or refining and, if necessary, other purification and refining processes.
- paraffin-based component stand for saturated, unbranched or branched alkanes and naphthenic component for cycloalkanes.
- mineral oils have different proportions of n-alkanes, iso-alkanes with a low degree of branching, so-called monomethyl-branched paraffins, and compounds with heteroatoms, in particular O, N and/or S, which are said to have slightly polar properties .
- the synthetic base oils include, among others, organic esters, for example diesters and polyol esters, polyalkylene glycols, polyethers, synthetic hydrocarbons such as polyalphaolefins (PAO), silicone oils and perfluoroalkyl ethers.
- organic esters for example diesters and polyol esters
- polyalkylene glycols for example diesters and polyol esters
- polyethers for example diesters and polyol esters
- synthetic hydrocarbons such as polyalphaolefins (PAO), silicone oils and perfluoroalkyl ethers.
- Natural oils are animal or vegetable oils, such as neatsfoot oil or jojoba oil.
- the base oils can also be used as mixtures and are often commercially available.
- Lubricating fluids typically contain various substances to specifically improve certain properties. These additives are used, for example, to improve load-carrying capacity and wear protection (high-pressure and anti-wear additives), foaming behavior (foam inhibitors), friction properties (friction modifiers) and oxidation and corrosion stability (oxidation inhibitors, metal passivators, rust inhibitors). Dispersants and detergents are also used as additives.
- flow improvers can be used as so-called viscosity index (VI) Improvers (higher molecular weight thickeners) are added in dosages of approximately 5.0 to 15.0% by weight and/or pour point depressants of approximately 0.2 to 2.0% by weight.
- the torque in electric drives is comparatively constant throughout the entire speed range, even when driving away.
- the speed level in electric drives and their gearing is significantly higher.
- the electrical and electronic components and components are partly in contact with the lubricating oil, either through direct wetting with the lubricating oil or through the penetration of the lubricating oil into design and manufacturing-related gaps, so that the lubricating oil can reach the electrical and electronic components.
- additives contained in the lubricating oil that contain chemically active sulfur enter into sulfur-corrosive reactions with the metals (particularly copper and silver) of the electrical and electronic components, which can lead to impairment of the function of the electrical components.
- the wear protection additives commonly used for gear oils are compounds containing sulfur and/or phosphorus and/or zinc and/or halogen.
- special high-pressure wear additives (so-called extreme pressure (EP) additives) are used, which in their basic chemical constitution represent long-chain hydrocarbons that are bridged together by a sulfur chain. Examples include polysulfides, sulfurized olefins and sulfurized esters. These sulfur compounds have a very strong tendency to decompose and form active sulfur in contact with non-ferrous metals (for example copper or silver), which forms sulfides with the aforementioned metals. Triaryl phosphates, zinc dialkyldithiophosphates, dithiocarbamates and dimercaptothiadiazoles are also known to be used.
- copper thiolate complexes are initially formed, accompanied by a redox process in which thiols are oxidized to disulfides and Cu(II) is reduced to Cu(l).
- the document US 4,217,232 discloses reaction products of polysulfides with a Grignard reagent as antioxidants in lubricants.
- Document US 3,873,454 discloses a similar sulfur-rich additive as a high-pressure lubricant additive.
- the document US 4,194,980 describes a similar high-pressure lubricant with ingredients that are formed by the reaction of sulfur-containing olefins with cyclic polydisulfides.
- the document US 2022/0041951 A1 describes a lubricant with a phosphorus-containing dispersant which has 2-3.5% by weight of phosphorus. It may also contain mercaptothiadiazoles and borated succinimides.
- the claimed viscosity of the lubricating fluid is 3.0 to 6.5 mm 2 /s, measured at 100°C.
- the document WO 2017/079017 A1 discloses a lubricant for use in the electric drive train containing an anti-wear additive with 0.3 -2.0% of an amine salt of a phosphorus compound obtained from P2S5, an alcohol, alkylene oxide and P2O5.
- the viscosity is 3 to 7.5 mm 2 /s, measured at 100°C.
- the lubricant contains sulfurized olefins of 0.5 - 7% by weight.
- the salt has, among others, the structure (RO)2PS-SH, which was reacted with propylene oxide and where R can be, among other things, an alkyl radical such as 2-methyl-4-pentyl. It may also contain dimercapto-thiadiazole and an ashless succinimide.
- the document EP 2 960 321 A1 describes a lubricating fluid with additives that leads to a kinematic viscosity at 100 ° C of 2.5 - 4.0 mm 2 /s.
- the difficulty in developing an optimal lubricating fluid composition is to find one that fully meets the special lubrication requirements in electric drives for gears and rolling bearings at high speeds and consistently high torques with simultaneously low friction and at the same time does not cause any corrosive changes in and on electrical and electronic components that are in direct contact with the liquid.
- the invention is therefore based on the object of finding an optimized lubricating fluid composition that is suitable for use in electric motors or electric drives. Metals such as copper and silver should be affected by contact as little or not at all as possible.
- the invention is intended to allow favorable efficiency in a transmission of an electric drive train.
- the invention relates to a liquid composition with a low dynamic viscosity (measured according to ASTM D 445 at 100 ° C) in the range from 0.8 to 4.0 mm 2 /s, preferably 2.0 to 2.8 mm 2 /s, particularly preferably 2.2 to 3.1 mm 2 /s, comprising
- a base oil or base oil mixture selected from polyalphaolefin oils according to Group IV of the API classification or GTL base oils according to Group III of the API classification; as well as the following additives:
- Lubricating fluids based on low-viscosity synthetic oils based on poly-a-olefins PAO in particular a combination of dimers from linear alpha- Olefins (LAO) with particularly good evaporation loss behavior at high temperatures and thus the combinations with selected ash-free borated succinimide dispersants (PIBSA/PAM) and 2,5-alkyl-thiadiazole compounds.
- LAO linear alpha- Olefins
- PIBSA/PAM ash-free borated succinimide dispersants
- a negative influence was found when using too high an amount or too low an amount of the claimed thiadiazoles in combination with the sulfur-phosphorus compounds (such as phosphoric acid esters) which were added to maintain sufficient wear behavior. This resulted in unpredictably strong interactions between the various additives in the above-mentioned base oil systems.
- boron-containing dispersant additives based on PIBSI and PIBSA has proven to be advantageous, although surprisingly in a significantly lower dosage than in comparison to formulations for applications as lubricating oils for dual clutch transmissions or so-called ATF oils for Step automatic transmission.
- the boron-containing, ash-free succinic acid amides and/or imides used in the liquid composition according to the invention function as dispersants with a comparatively low MW based on PIBSA/PIBSI/PAM are technically preferably produced from maleic anhydrite (MAN) with polyisobutylene (PIB) in different molecular weights, whereby: Depending on the manufacturer, a distinction is made between conventional PIBs that are less reactive and newer, more reactive PIBs and their mixtures.
- suitable dispersants based on succinimides is described, for example, in US 897696 B2, paragraphs 41-47.
- the preferred dispersants can optionally be treated with phosphorus and are borated.
- DETA or TETA are preferred among the polyamines, particularly preferably TEPA. Suitable dispersants are also described in EP 0 840 775 B1.
- PIB polyisobutene succinic anhydride
- the necessary low viscosity of the liquid composition can be ensured with the selected succinimide dispersants with MW preferably from 600 to 1050.
- these dispersants still lead to sufficient cleanliness (no sludge, no unwanted deposits) at high application temperatures without impairing the cold flow properties.
- only certain combinations proved to be advantageous. If the amount of phosphoric acid ester is increased too much, the feeding capacity drops significantly. With targeted use, good compatibility is ensured both with uncoated copper wire materials and with special wires that are used with special protective lacquer layers for use in the windings of electrical machines.
- the terf-nonyl group has proven to be particularly effective compared to other alkyl groups.
- the base oil can in particular be at least one selected from:
- a base oil selected from polyalphaolefin oils with a C20 chain or C24 chain such as Chevron Synlube 2.5 with a dynamic viscosity in the range of 1.0 - 4.2, preferably 2, 0 to 2.5 mm 2 /s at 100°C, particularly preferably 2.1 to 2.4 mm 2 /s according to Group IV of the API classification
- a base oil selected from special polyalphaolefin oils with excellent low evaporation loss behavior at high temperatures, produced using metal catalysts with a dynamic viscosity in the range of 0.9 - 4.2, preferably 0.9 to 1.5 mm 2 /s at 100°C, particularly preferably 1.2 to 1.4 mm 2 /s according to Group IV of the API classification
- a base oil selected from special linear polyolefins with excellent low evaporation loss behavior at high temperatures, produced using metal catalysts with a dynamic viscosity in the range of 0.9
- the additives can in particular be as follows:
- PIBSA poly-isobutylene succinimides
- PIBSI poly-isobutylene succinimides
- the dynamic viscosity is determined according to the ASTM D445 test method. At -40°C the viscosity is below 2000 mPas (measured according to DIN 51398), preferably even ⁇ 1500 mPas.
- the API classification of oils is the American Petroleum Institute (API) classification.
- the invention also relates to the use of the lubricating fluid composition according to the invention in electronic components, such as battery-operated vehicles, electric drives and high-speed transmissions in combination with electrical machines. Copper and silver are regularly used in electronic components.
- the lubricant composition can contain other additives tailored to the base oil, such as anti-wear additives, antioxidants, metal deactivators, rust inhibitors, dispersants, friction modifiers and foam inhibitors.
- additives tailored to the base oil such as anti-wear additives, antioxidants, metal deactivators, rust inhibitors, dispersants, friction modifiers and foam inhibitors.
- composition according to the invention advantageously allows the use of classic flow improvers in comparatively low concentrations of only ⁇ 0.5% by weight.
- flow improvers viscosity index (Vl) improvers and pour point reducers
- Vl viscosity index
- pour point reducers for example higher molecular weight thickeners
- the invention makes it possible not to use polysulfides or only in small amounts and still achieve good lubricating properties. This prevents or slows down chemical attack on copper, which occurs in electric motors, batteries, etc.
- the liquid composition according to the invention is characterized by excellent heat conduction properties when used as a coolant and in transmissions.
- the lubricating fluid composition ensures very good lubricity of gears with very low drag losses due to very low coefficients of friction in tribological contacts.
- liquid composition according to the invention is also well compatible with the elastomer materials and polyamides used in transmissions and drive trains (such as special radial shaft seals (RWDR) made from ACM), even at comparatively high speeds or high speeds Application temperatures.
- RWDR radial shaft seals
- the composition according to the invention also advantageously has a shear loss (viscosity after shear) according to ASTM D445 of less than 5%.
- SAE classification J 306 as of 2019
- the liquid composition additionally comprises a phosphorus compound or
- Phosphorusulfur compound according to formula (II) In this embodiment, it is particularly preferred to be an ammonium salt of the phosphorus compound according to formula (II), where at least one of the radicals on the ammonium cation is a C12-C14 tert-alkyl radical.
- the liquid composition comprises the reaction product of 4-methyl-2-pentanol and diphosphorus pentasulfide, propoxylated and esterified with diphosphorus pentaoxide and salted with amines with a C12-14 tert-alkyl radical
- the liquid composition can contain up to 6% by weight, in particular 3 to 6% by weight, of a dispersing polymethacrylate.
- Polymethacrylates are esters of polymethacrylic acid, esterified with, for example, alkyl alcohols, such as C1-C4 alkyl, especially with methanol (leads to polymethyl methacrylate, PMMA).
- the base oil also includes a GTL base oil according to Group III of the API classification.
- the applicability for electronic components is advantageously improved.
- the grouping of base oils is given as a table in the exemplary embodiment.
- the composition according to the invention preferably comprises a flow improver (PPD) in an amount of ⁇ 0.5% by weight, the flow improver being selected from hydrogenated polystyrene-co-isoprene (HSI), ethylene-propylene copolymers (OCP), polyisobutylene (PIB), polyalkyl acrylates and methacrylates and their copolymers (PAMA), vinylpyrrolidone/methacrylate copolymers, polyvinylpyrrolidone, polybutenes, olefin copolymers, styrene/acrylate copolymers, polyethers, alkylated naphthalene derivatives and mixtures thereof.
- PPD flow improver
- HAI hydrogenated polystyrene-co-isoprene
- OCP ethylene-propylene copolymers
- PIB polyisobutylene
- PAMA polyalkyl acrylates and methacrylates and their copolymers
- the composition has a boron content of 20 to 300 mg/kg.
- the composition preferably contains no or only small amounts of sulfur compounds of the sulfurized olefin type of 0 to ⁇ 0.4%. These have an unfavorable corrosion behavior with copper materials.
- the phosphorus content of the composition is 0.02 to 0.1% by weight, in particular in the form of phosphorus, which is present bound in various additives.
- phosphorus content refers to the total content of the composition of bound and unbound phosphorus, including any phosphorus present in the base oil as well as phosphorus that is bound in corresponding additives.
- Phosphorus-containing additives are known to improve the lubricity of the composition against abrasive wear.
- the kinematic viscosity measured at 100 ° C is 1.5 to 3.3 mm 2 /s (centistokes), preferably 2.0 to 2.9 mm 2 /s, particularly preferably 2.5 to 2 .9 mm 2 /s. Viscosities in the ranges mentioned are particularly suitable for lubricating gearboxes in electric drives.
- flow improvers viscosity index (Vl) improvers and pour point reducers
- Vl viscosity index
- pour point reducers for example higher molecular weight thickeners of 5 to 15% by weight
- the composition according to the invention preferably contains these classic flow improvers only in comparatively low concentrations of ⁇ 0.5% by weight.
- a GTL 3 and possibly also a GTL 4 are particularly preferred (see Table 1).
- Table 2 Typical data of GTL according to the technical data sheets compared to PAO
- Synthetic base oils of Groups III and IV can be used as the base oil of the lubricant composition according to the invention.
- the API base oil groups Group I to V are shown in Table 3.
- Table 3 2 ASTM D1552, ASTM D2622, ASTM D3120, ASTM D4294 or ASTM D4927.
- PAO 4 Polyalphaolefin 4 HC 3/4
- Viscosity improver D-PMA: Dispersing polyalkyl methacrylate
- B-PP borated PIBSA/PAM succinimide
- EP 1 AT: alkyl-thiadiazole with CgHi9 (tert-nonyl); according to (la)/(lb)
- EP 2 olefinic polysulfide
- Wear protection additive AW 1: phosphoric acid compound (reaction product from 4-methyl
- KS 1 triazolalkylamine
- KS 2 Irgamet® TTZ (BASF)
- Antioxidant AO 1: Bisnonylphenylamine
- compositions according to Table 4 were prepared by mixing, with all information based on% by weight.
- Example 10 is a typical modern manual transmission oil with excellent lubrication properties, however both the thermal stability and the compatibility with copper are inadequate for applications in the electrical drive train in an electric machine. The efficiency also turned out to be significantly less favorable.
Landscapes
- 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 |
|---|---|---|---|
| DE102022116644.9A DE102022116644A1 (de) | 2022-07-04 | 2022-07-04 | Flüssigkeitszusammensetzung zur Verwendung in elektrischen Antrieben |
| PCT/EP2023/068431 WO2024008739A1 (de) | 2022-07-04 | 2023-07-04 | Flüssigkeitszusammensetzung zur verwendung in elektrischen antrieben |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4551677A1 true EP4551677A1 (de) | 2025-05-14 |
| EP4551677B1 EP4551677B1 (de) | 2026-04-01 |
Family
ID=87196419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23739197.4A Active EP4551677B1 (de) | 2022-07-04 | 2023-07-04 | Flüssigkeitszusammensetzung zur verwendung in elektrischen antrieben |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4551677B1 (de) |
| CN (1) | CN119487162A (de) |
| DE (1) | DE102022116644A1 (de) |
| WO (1) | WO2024008739A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025122708A1 (en) * | 2023-12-07 | 2025-06-12 | Chevron Phillips Chemical Company Lp | Pao-based-compositions for lubricant applications |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US897696A (en) | 1907-12-05 | 1908-09-01 | David S Affleck | Air-brake valve. |
| US3873454A (en) | 1974-03-22 | 1975-03-25 | Mobil Oil | Lubricant composition |
| US4194980A (en) | 1978-12-15 | 1980-03-25 | Mobil Oil Corporation | Sulfurized olefin lubricant additives and compositions containing same |
| US4217232A (en) | 1978-12-21 | 1980-08-12 | Mobil Oil Corporation | Antioxidant compositions |
| US5646099A (en) | 1995-07-17 | 1997-07-08 | Exxon Chemical Patents Inc. | Automatic transmission fluids of improved viscometric properties |
| AU2006266095B2 (en) | 2005-06-29 | 2010-08-05 | The Lubrizol Corporation | Zinc-free farm tractor fluid |
| US20100130390A1 (en) * | 2007-03-13 | 2010-05-27 | The Lubrizol Corporation | Multifunctional Driveline Fluid |
| JP5988891B2 (ja) | 2013-02-19 | 2016-09-07 | Jxエネルギー株式会社 | 変速機用潤滑油組成物 |
| CN108431189A (zh) * | 2015-11-06 | 2018-08-21 | 路博润公司 | 低粘度齿轮润滑剂 |
| DE102018118460A1 (de) | 2018-07-31 | 2020-02-06 | Shimano Inc. | Hydraulikvorrichtung |
| US11214755B2 (en) * | 2019-04-10 | 2022-01-04 | Eneos Corporation | Lubricating oil composition |
| EP3990565B1 (de) | 2019-06-27 | 2025-11-19 | ExxonMobil Chemical Patents Inc. | Wärmeübertragungsfluide mit aus linearen alpha-olefin-dimeren abgeleiteten methylparaffinen und verwendung davon |
| US20230120889A1 (en) * | 2020-03-27 | 2023-04-20 | Idemitsu Kosan Co.,Ltd. | Lubricant composition |
| US11332689B2 (en) | 2020-08-07 | 2022-05-17 | Afton Chemical Corporation | Phosphorylated dispersants in fluids for electric vehicles |
-
2022
- 2022-07-04 DE DE102022116644.9A patent/DE102022116644A1/de active Pending
-
2023
- 2023-07-04 EP EP23739197.4A patent/EP4551677B1/de active Active
- 2023-07-04 CN CN202380051830.4A patent/CN119487162A/zh active Pending
- 2023-07-04 WO PCT/EP2023/068431 patent/WO2024008739A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN119487162A (zh) | 2025-02-18 |
| DE102022116644A1 (de) | 2024-01-04 |
| EP4551677B1 (de) | 2026-04-01 |
| WO2024008739A1 (de) | 2024-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102020002249B4 (de) | Schmierölzusammensetzung und deren Verwendung | |
| US5885942A (en) | Multifunctional lubricant additive | |
| JP5646859B2 (ja) | 無段変速機用潤滑油組成物 | |
| EP3434756B1 (de) | Schmierölzusammensetzung und schmierverfahren | |
| KR20090050051A (ko) | 윤활유 조성물 | |
| JPWO2011080970A1 (ja) | 潤滑油組成物 | |
| EP2636725A1 (de) | Schmierölzusammensetzung für die Schmierung eines Automobilmotors | |
| DE60212292T2 (de) | Flüssigkeit für Getriebe mit veringerter Rostfrasskorrosion | |
| DE69327453T3 (de) | Verwendung von anorganischen phosphorverbindungen als friktionsverbesserer in schmiermittelzusammensetzungen für flüssigkeitskupplungen oder flüssigkeitsbremsen | |
| JP2608098B2 (ja) | 潤滑油組成物 | |
| CN115505450A (zh) | 一种开式齿轮油组合物及其制备方法 | |
| EP4551677B1 (de) | Flüssigkeitszusammensetzung zur verwendung in elektrischen antrieben | |
| EP1057883A2 (de) | Schmierölzusammensetzung für Getriebe | |
| CN117050799A (zh) | 一种润滑脂及其制备方法与应用 | |
| JP5344424B2 (ja) | 等速ジョイント用グリース組成物及び等速ジョイント | |
| JPH06200274A (ja) | 終減速機用潤滑油組成物 | |
| JPH06200270A (ja) | 終減速機用潤滑油組成物 | |
| JP4567157B2 (ja) | 等速ジョイント用グリース組成物 | |
| GB2024853A (en) | Synergistic lubricating compositions | |
| DE60105165T2 (de) | Reibungsmodifizierende zusatzkombination | |
| JP2020026488A (ja) | 潤滑油組成物 | |
| JP6857317B2 (ja) | 潤滑油組成物 | |
| JP7126357B2 (ja) | 潤滑油組成物 | |
| DE102015204009B4 (de) | Verwendung einer Schmierstoffzusammensetzung zur Schmierung eines Doppelkupplungsgetriebes | |
| JP4594491B2 (ja) | グリース組成物 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20250204 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| TPAC | Observations filed by third parties |
Free format text: ORIGINAL CODE: EPIDOSNTIPA |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20260114 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: F10 Free format text: ST27 STATUS EVENT CODE: U-0-0-F10-F00 (AS PROVIDED BY THE NATIONAL OFFICE) Effective date: 20260401 Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502023003608 Country of ref document: DE |
|
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Free format text: CASE NUMBER: UPC_APP_0009943_4551677/2026 Effective date: 20260313 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |