EP4709822A1 - Lubrifiants synthétiques à base de polyalphaoléfine pour engrenages - Google Patents

Lubrifiants synthétiques à base de polyalphaoléfine pour engrenages

Info

Publication number
EP4709822A1
EP4709822A1 EP24729637.9A EP24729637A EP4709822A1 EP 4709822 A1 EP4709822 A1 EP 4709822A1 EP 24729637 A EP24729637 A EP 24729637A EP 4709822 A1 EP4709822 A1 EP 4709822A1
Authority
EP
European Patent Office
Prior art keywords
composition
less
lubricant
cst
polyalphaolefin
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
Application number
EP24729637.9A
Other languages
German (de)
English (en)
Inventor
Qinggao Philip MA
Mihai Manitiu
Donna Mae Mosher
Chad R STEELE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of EP4709822A1 publication Critical patent/EP4709822A1/fr
Pending legal-status Critical Current

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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • C10M107/10—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing aliphatic monomer having more than 4 carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M119/00—Lubricating compositions characterised by the thickener being a macromolecular compound
    • C10M119/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • 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
    • C10M169/02—Mixtures of base-materials and thickeners
    • 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
    • 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
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives

Definitions

  • EDFs electric drivetrain fluids
  • the drive system fluids which often double as motor coolants, must be compatible with wiring, special plastics, and insulation materials.
  • Electric motors generate large quantities of heat and run at higher speeds to increase efficiency, which requires a gear oils that can lubricate gearboxes and axles, while removing the heat effectively from motors and gears.
  • EDFs need to be specifically tailored to better manage the high-speed and high-torque requirements of electric drivetrains. EDFs with low traction coefficient are desired for better energy efficiency.
  • EDFs subjected to high-speed conditions can experience foaming and aeration which impacts the heat conductivity, bearing wear protection, and lubricant oxidative stability. Accordingly, there is a demand for EDFs which meet the conductivity, wear protection, thermal stability, and friction requirements of electric vehicle applications.
  • the present disclosure addresses these needs.
  • SUMMARY OF THE DISCLOSURE [005] Disclosed herein are a series of polyalphaolefin based synthetic gear lubricants suitable for EDF applications which demonstrate low traction coefficient, low aeration, low foaming, and high component compatibility and protection.
  • Fig.1 is a bar graph showing the aeration of Example 1 vs benchmark Dexron ULV by Fast FZG under various high speed conditions.
  • DETAILED DESCRIPTION I Definitions [009] Before the present compositions and methods are disclosed and described, it is to be understood that the compositions and methods are not limited to specific synthetic methods, specific components, or to particular compositions. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. [0010] As used in the specification and the appended claims, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise.
  • Ranges may be expressed herein as from “about” one particular value, and/or to “about” another particular value. When such a range is expressed, another embodiment includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about,” it will be understood that the particular value forms another embodiment. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint. When ranges are listed in the specification and in the claims, it is understood that all the numbers including decimals within the range are included whether specifically disclosed.
  • the range would include every number within the range, such as 1; 1.1; 1.2; 1.3; 1.4; 1.5; 1.6; 1.7; 1.8; 1.9; 2; 2.1; 2.2; 2.3; 2.4; 2.5; 2.6; 2.7; 2.8; 2.9; 3; 3.1; 3.2; 3.3; 3.4; 3.5; 3.6; 3.7; 3.8; 3.9; 4; 4.1; 4.2; 4.3; 4.4; 4.5; 4.6; 4.7; 4.8; 4.9; 5; 5.1; 5.2; 5.3; 5.4; 5.5; 5.6; 5.7; 5.8; 5.9; 6; 6.1; 6.2; 6.3; 6.4; 6.5; 6.6; 6.7; 6.8; 6.9; 7; 7.1; 7.2; 7.3; 7.4; 7.5; 7.6; 7.7; 7.8; 7.9; 8; 8.1; 8.2; 8.3; 8.4; 8.5; 8.6; 8.7; 8.8; 8.9; 9
  • Lubricant Formulations [0013] The present disclosure contemplates a lubricant formulation for use in electric drivetrain fluid (EDF) applications which comprises a base oil, a polymer thickener, and an additive package. It has been surprisingly found that the present EDF formulations exhibit low traction coefficient, low aeration, low foaming, better component compatibility and protection, which makes them particularly suitable for electric drivetrain fluid applications.
  • EDF electric drivetrain fluid
  • the base oil in the lubricant formulation may be any oil classified by the American Petroleum Institute as a group I oil, a group II oil, a group III oil, a group IV oil, a group V oil, or combinations thereof.
  • a particularly suitable class of base oils for the lubricant compositions is low viscosity polyalphaolefins (PAO’s).
  • PAO low viscosity polyalphaolefins
  • Polyalphaolefins are oligomeric or polymeric molecules produced from polymerization of alpha-olefin monomers in the presence of a catalyst.
  • This catalyst for example, may be a metallocene catalyst.
  • PAOs have a number of desirable properties that make them attractive as lubricants and functional fluids, including high thermal stability, excellent low-temperature fluidity, low volatility, and good compatibility with seals, gaskets, and elastomers. PAOs generally have a high viscosity index, making them suitable for applications with significant temperature fluctuation.
  • PAO's low viscosity polyalphaolefins
  • the preferred polyalphaolefins are made from 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, or mixtures thereof.
  • suitable polyalphaolefins may be derived from any C 8 to C 16 alphaolefin.
  • the alphaolefins are DMS_US.363915825.1 074008-000787 (BASF Reference 230100WO01) preferably oligomerized with a metallocene catalyst.
  • Suitable PAOs can include mixtures of different oligomers such as a mixture of 1-decene tetramers and trimers.
  • the low viscosity polyalphaolefin base oils can be obtained commercially for instance under the tradename SPECTRASYN TM , SPECTRASYN PLUS TM , and SPECTRASYN ELITE TM from Exxon Mobil. Suitable base oils include SPECTRASYN 2, SPECTRASYN MAX 3.5, SPECTRASYN 4, and SPECTRASYN 6.
  • the polyalphaolefins sold under the tradename SYNFLUID® from Chevron Phillips, such as SYNFLUID PAO 2, SYNFLUID PAO 2.5, SYNFLUID PAO 5, SYNFLUID PAO 6, and SYNFLUID PAO 7 may also be used.
  • the polyalphaolefins sold under the tradename DURASYN® from INEOS, such as DURASYN 162, DURASYN 133, DURASYN 136, and DURASYN 164 are also suitable.
  • the low viscosity PAO base oil may have a kinematic viscosity of from as low as 1.7 cSt, 2 cSt, 2.5 cSt, 3 cSt, 3.5 cSt, or as high as 4 cSt, 4.5 cSt, 5 cSt, 5.5 cSt, 6 cSt, 6.5 cSt, 7 cSt, 7.5 cSt, 8 cSt, 8.5 cSt, 9 cSt, 9.5 cSt, 10 cSt, or within any range encompassed by any two of the foregoing values as endpoints at 100°C.
  • the low viscosity PAO base oil may have a kinematic viscosity of from 1.7 cSt to 10 cSt or 1.7 cSt to 7.5 cSt at 100°C.
  • the low viscosity PAO has kinematic viscosity at 100°C of from 1.7 cSt to 5 cSt, more preferably, the low viscosity PAO has kinematic viscosity at 100°C of from 2.0 cSt to 4.0 cSt.
  • the number average number of carbon in the low viscosity PAO may be from 20 to 50.
  • any of the base oils described above may be present in the lubricant formulation in an amount as low as 50 wt.%, 55 wt.%, 60 wt.%, 65 wt.%, 70 wt.%, 75 wt.%, 80 wt.%, 90 wt.%, 95 wt.%, or as high as 96 wt.%, 97 wt.%, 98 wt.%, 98.1 wt.%, 98.2 wt.%, 98.3 wt.%, 98.4 wt.%, 98.5 wt.%, 98.6 wt.%, 98.7 wt.%, 98.8 wt.%, 98.9 wt.%, 99 wt.%, 99.1 wt.%, 99.2 wt.%, 99.3 wt.%, 99.4 wt.%, 99.5 wt.%,
  • base oil may be present in an amount of from 60 wt.%, to 98.9 wt.%.
  • the lubricant formulations in accordance with the present disclosure may also comprise a polymer thickener to improve the overall characteristics and performance of the formulations.
  • the polymer thickener is preferably a high viscosity polyalphaolefin (PAO) material with a kinematic viscosity at 100°C of as low as 40 cSt, 50 cSt, 60 cSt, 70 cSt, 80 cSt, 90 cSt, 100 cSt, 110 cSt, 120 cSt, 130 cSt, 140 cSt, 150 cSt, 160 cSt, or as high DMS_US.363915825.1 074008-000787 (BASF Reference 230100WO01) as 170 cSt, 180 cSt, 190 cSt, 200 cSt, 250 cSt, 300 cSt, 350 cSt, 400 cSt, or within any range encompassed by any two of the foregoing values as endpoints.
  • PAO polyalphaolefin
  • he kinematic viscosity at 100 °C of the PAO thickener may be between 40 cSt to 400 cSt, preferably between 100 cSt to 180 cSt, more preferably between 130 cSt to 170 cSt.
  • the number average carbon number in the molecule is greater than 150.
  • the high viscosity PAO polymer thickener is preferably produced with a metallocene catalyst.
  • the high viscosity PAOs are available commercially under the tradename SPECTRASYN ELITE TM from Exxon Mobil. Suitable PAOs include SPECTRASYN ELITE65, SPECTRASYN ELITE 150, and SPECTRASYN ELITE 300.
  • the high viscosity polyalphaolefins sold under the tradename SYNFLUID® from Chevron Phillips are also suitable, such as SYNFLUID mPAO 65, SYNFLUID mPAO 100, SYNFLUID mPAO150.
  • the high viscosity polyalphaolefins sold under the tradename DURASYN® from INEOS, such as DURASYN 174I, DURASYN 180R, DURASYN 180I may also be used.
  • the high viscosity PAO polymer thickener may be present in the lubricant formulation in an amount as low as 0.1 wt.%, 0.5 wt.%, 1 wt.%, 5 wt.%, 10 wt.%, 15 wt.%, 20 wt.%, 25 wt.%, or as high as 30 wt.%, 35 wt.%, 40 wt.%, 45 wt.%, 50 wt.%, or within any range encompassed by any two of the foregoing values as endpoints, based on the total weight of the lubricant composition.
  • the polymer thickener may be present in an amount of from 0.1 wt.% to 30 wt.%.
  • the lubricant formulations may further comprise other optional additives.
  • the additives suitable for use in the formulation may include viscosity modifiers, antifoaming agents, additive packages, antioxidant agents, antiwear agents, extreme pressure agents, detergents, dispersants, anti-rust agents, friction modifiers, corrosion inhibitors, gear oil additives, and combinations thereof.
  • Lubricant fluid additive packages are well DMS_US.363915825.1 074008-000787 (BASF Reference 230100WO01) known in the art. They confer to a base oil composition the required characteristics to make that base oil function acceptably in various applications. These characteristics would include, but not be limited to, oxidation stability, wear protection, friction control, dispersancy, low temperature fluidity, seal swell, and foam suppression.
  • Suitable commercially available performance additive packages are: PARANOX® 440, PARANOX® 442, PARANOX® 445, and PARATORQ® 4520 sold by Exxon Chemical Company; Hitec® E-400, Hitec® E-403, Hitec® E-410, and Hitec® E-420 sold by Ethyl Additive Company; and Lubrizol® 6268, Lubrizol® 7900, and Lubrizol® 9600 sold by the Lubrizol Corporation.
  • the additive package may be present in the lubricant formulation in an amount as low as 0.1 wt.%, 0.2 wt.%, 0.3 wt.%, 0.4 wt.%, 0.5 wt.%, 0.6 wt.%, 0.7 wt.%, 0.8 wt.%, 0.9 wt.%, 1 wt.%, 2 wt.%, 3 wt.%, 4 wt.%, 5 wt.%, 6 wt.%, 7 wt.%, 8 wt.%, 9 wt.%, 10 wt.%, 11 wt.%, or as high as 12 wt.%, 13 wt.%, 14 wt.%, 15 wt.%, 16 wt.%, 17 wt.%, 18 wt.%, 19 wt.%, 20 wt.%, or within any range encompassed by any two of the foregoing values
  • the additive package may be present in an amount of from 1 wt.% to 10 wt.%.
  • Lubricant Properties [0027]
  • the gear lubricants contemplated by the present disclosure may have improved properties which make them particularly suitable for high-speed electric drivetrain fluid applications. Since electric drivetrain fluid applications involve high RPMs and high heat surges, lubricants with better heat management, better energy efficiency, and low foaming/aeration are desired. Low traction coefficient, good shear stability, and high viscosity index are also advantageous since lubricants in electric mobility applications can face significant shear forces.
  • the gear lubricant may have a pourpoint temperature of -30°C or lower, -35°C or lower, -40°C or lower, -45°C or lower, -50°C or lower, 55°C or lower,- 60°C or lower, -65°C or lower, -70°C or lower, -75°C or lower, -80°C or lower, -85°C or lower, -90°C or lower, -95°C or lower, or -100°C or lower according to ASTM D97.
  • the gear lubricants may have a BF viscosity at -40°C of 8000 cP or lower, 7500 cP or lower, 7000 cP or lower, 6500 cP or lower, 6000 cP or lower, 5500 cP or lower, 5000 cP or lower, 4500 cP or lower, 4000 cP or lower, 3500 cP or lower, 3000 cP or lower, 2500 cP or lower, 2000 cP or lower, 1500 cP or lower, 1000 cP or lower, or 500 cP or DMS_US.363915825.1 074008-000787 (BASF Reference 230100WO01) lower, according to ASTM D2983.
  • the gear lubricants may have an air release at 50°C of less than 100 seconds, less than 95 seconds, less than 90 seconds, less than 85 seconds, less than 80 seconds, less than 75 seconds, less than 70 seconds, less than 65 seconds, less than 60 seconds, less than 55 seconds, less than 50 seconds, less than 45 seconds, less than 40 seconds, less than 35 seconds, less than 30 seconds, less than 25 seconds, less than 20 seconds, less than 15 seconds, less than 10 seconds, or less than 5 seconds according to ASTM D3427.
  • the gear lubricants may have an air release at 75°C of less than 100 seconds, less than 95 seconds, less than 90 seconds, less than 85 seconds, less than 80 seconds, less than 75 seconds, less than 70 seconds, less than 65 seconds, less than 60 seconds, less than 55 seconds, less than 50 seconds, less than 45 seconds, less than 40 seconds, less than 35 seconds, less than 30 seconds, less than 25 seconds, less than 20 seconds, less than 15 seconds, less than 10 seconds, or less than 5 seconds according to ASTM D3427.
  • the gear lubricants may have a slide to roll (SRR) ratio of less than 0.15, less than 0.14, less than 0.13, less than 0.12, less than 0.11, less than 0.10, less than 0.09, less than 0.08, less than 0.07, less than 0.06, less than 0.05, less than 0.045, less than 0.04, less than 0.035, less than 0.03, less than 0.025 less than 0.02, less than 0.015 less than 0.01, less than 0.005, or less than 0.001 as measured by a mini traction machine (MTM) at 40% slide to roll (SRR) ratio, 50N and 40°C.
  • SRR slide to roll
  • the gear lubricants may also have a slide to roll (SRR) ratio of less than 0.03, less than 0.029, less than 0.028, less than 0.027, less than 0.026, less than 0.025, less than 0.024, less than 0.023, less than 0.022, less than 0.021, less than 0.02, less than 0.019, less than 0.018 , less than 0.017, less than 0.016, less than 0.015, less than 0.014, less than 0.013, less than0.012, less than 0.011, less than 0.01, less than0.009, less than 0.008, less than 0.007, less than 0.006, less than 0.005, less than 0.004, less than 0.003, less than 0.002, or less than 0.001 as measured by a mini traction machine (MTM) at 40%, 50N and 100°C.
  • MTM mini traction machine
  • the gear lubricants may also have a scuffing protection failure load stage of 1 or greater, 2 or greater, 3 or greater, 4 or greater, 5 or greater, 6 or greater, 7 or greater, 8 or greater, 9 or greater, 10 or greater, 11 or greater, or 12 according to the FZG Gear Test A10/16.6R/90.
  • Lubricant Applications [0035]
  • the lubricants of the present disclosure may be used in a variety of DMS_US.363915825.1 074008-000787 (BASF Reference 230100WO01) applications relating to vehicles, particularly electric vehicles and e-mobility applications.
  • the lubricants may be used in electric vehicles and their drivetrains.
  • the lubricants may be used in electric motors to help lubricate and reduce friction between moving parts and to dissipate heat.
  • the lubricants may also be used in gearboxes, battery cooling systems, suspension systems, power electronics, axles, and bearings, among others.
  • the lubricants of the present disclosure may be used in the drivetrain of an electric vehicle.
  • the lubricants of the present disclosure may be used in the motor of an electric vehicle.
  • the lubricants of the present disclosure may be used in the axle of an electric vehicle.
  • the lubricants of the present disclosure may be used in the gearbox of an electric vehicle.
  • composition Formulation 1 demonstrated an 85% improvement on aeration and a 45% improvement on energy efficiency.
  • Example 2 Comparison of Properties of Formulation 1 vs. Benchmark [0045] A series of properties were measured between Formulation 1 from Example 1 and Dexron ULV. The results are summarized in Table 2 below. Table 2 Properties of Formulation 1 vs. Benchmark DMS_US.363915825.1 074008-000787 (BASF Reference 230100WO01) n n p .

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

Abstract

La présente divulgation concerne des lubrifiants à base de polyalphaoléfine mélangés avec des additifs qui présentent des améliorations significatives de performance en termes de transfert de chaleur, d'intégrité de film, de stabilité oxydative et d'efficacité énergétique.
EP24729637.9A 2023-05-08 2024-05-07 Lubrifiants synthétiques à base de polyalphaoléfine pour engrenages Pending EP4709822A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363464794P 2023-05-08 2023-05-08
PCT/US2024/028176 WO2024233561A1 (fr) 2023-05-08 2024-05-07 Lubrifiants synthétiques à base de polyalphaoléfine pour engrenages

Publications (1)

Publication Number Publication Date
EP4709822A1 true EP4709822A1 (fr) 2026-03-18

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Application Number Title Priority Date Filing Date
EP24729637.9A Pending EP4709822A1 (fr) 2023-05-08 2024-05-07 Lubrifiants synthétiques à base de polyalphaoléfine pour engrenages

Country Status (4)

Country Link
EP (1) EP4709822A1 (fr)
KR (1) KR20260007264A (fr)
CN (1) CN121079386A (fr)
WO (1) WO2024233561A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1208196A (fr) * 1982-03-10 1986-07-22 Raymond F. Watts Produit lubrifiant
EP2352808A1 (fr) * 2008-09-25 2011-08-10 Cognis IP Management GmbH Compositions lubrifiantes
JP6858501B2 (ja) * 2016-07-11 2021-04-14 セイコーインスツル株式会社 グリース、転がり軸受、転がり軸受装置及び情報記録再生装置

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WO2024233561A1 (fr) 2024-11-14
CN121079386A (zh) 2025-12-05
KR20260007264A (ko) 2026-01-13

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