EP2714866A1 - Use of nanoscale materials in a composition for preventing symptoms of fatigue in the surface-closed structure of drive elements - Google Patents
Use of nanoscale materials in a composition for preventing symptoms of fatigue in the surface-closed structure of drive elementsInfo
- Publication number
- EP2714866A1 EP2714866A1 EP12720427.9A EP12720427A EP2714866A1 EP 2714866 A1 EP2714866 A1 EP 2714866A1 EP 12720427 A EP12720427 A EP 12720427A EP 2714866 A1 EP2714866 A1 EP 2714866A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oils
- composition according
- composition
- nanoparticles
- pitting
- 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
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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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/10—Metal oxides, hydroxides, carbonates or bicarbonates
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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
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/02—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic oxygen-containing compound
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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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/26—Compounds containing silicon or boron, e.g. silica, sand
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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
- C10M147/00—Lubricating compositions characterised by the additive being a macromolecular compound containing halogen
- C10M147/02—Monomer containing carbon, hydrogen and halogen 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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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
- C10M2201/10—Compounds containing silicon
- C10M2201/105—Silica
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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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/04—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions having a silicon-to-carbon bond, e.g. organo-silanes
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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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/02—Unspecified siloxanes; Silicones
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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
- C10N2020/055—Particles related characteristics
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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
- C10N2020/055—Particles related characteristics
- C10N2020/06—Particles of special shape or size
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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
- C10N2020/055—Particles related characteristics
- C10N2020/061—Coated particles
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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
- C10N2030/02—Pour-point; 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
- C10N2030/04—Detergent property or dispersant property
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2070/00—Specific manufacturing methods for lubricant compositions
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2070/00—Specific manufacturing methods for lubricant compositions
- C10N2070/02—Concentrating of additives
Definitions
- the present invention relates to the use of nanoscale materials in a composition applied to their surfaces to prevent fatigue damage in drive elements.
- this order protects the surfaces of drive elements against the formation of gray staining, surface fatigue, micro-pitting and pitting. The occurrence of fatigue damage on these surfaces is thereby prevented or reduced.
- gray pitting and pitting are those which are the most severe material damage from the resulting cracks.
- DE-OS 1 644 934 describes organophosphates as additives in lubricants which are added as anti-fatigue additives.
- EP 1 642 957 A1 discloses thiazoles as anti-pitting additives.
- EP 1 642 957 A1 relates to the use of MoS 2 and molybdenum dithiocarbamate, which are used as additives in urea fats for propeller shafts.
- the additives known from the prior art described above are not thermally stable as organic substances.
- they can evaporate under the operating conditions or can react as a classic anti-wear additives, especially with the metal surfaces, ie they predominantly react on the touching roughness peaks, since there by the flash temperatures occurring sufficient energy for a chemical reaction with the metallic Friction layer is present. Therefore, they can at most act as subordinate anti-pitting additives.
- Solid lubricants such as molybdenum disulfide, on the other hand, have a tendency to precipitate out due to their density Settle oil formulations and may also have a corrosive effect.
- the object of the present invention is to provide a composition which can be applied to the surfaces of drive elements so as to prevent or reduce the fatigue phenomena "gray spots" and "pitting" on these drive elements.
- the composition should contain no volatile organic compounds as anti-pitting additive and the anti-pitting additives should be in a liquid phase with Newtonian flow behavior. This allows them to penetrate into the structures or depressions described above and reinforce the metal structure there.
- the subject of the present invention is accordingly the use of a composition which is applied to the surface of the drive elements in order to prevent or avoid fatigue phenomena. It has surprisingly been found that the application of a composition containing surface-modified nanoparticles and a carrier material prevents or prevents the fatigue damage, such as gray pitting and pitting.
- the surface-modified nanoparticles contained in the composition are oxidic nanoparticles. They can be selected from silica, zinc oxide and alumina.
- surface modification reagents such as alkyl, aryl, Alkylarylsilanes having at least 1 to 3 of these alkyl, aryl or alkylaryl groups, which may additionally contain functional groups, in particular thio groups, phosphate groups and which are used individually or in combination.
- the optionally present thio or phosphate groups can additionally undergo a reaction with the metal surface to be protected.
- the amount of modifying reagent per nm 2 of the particle surface is 0.1 to 10 molecules of the modifying reagent, preferably 0.3 to 5 molecules. This chemical modification has the effect that the nanoparticles in different base oils are monoparticulate, ie without aggregation.
- composition may contain mixtures of nanoparticles which are both different from one another and have different particle sizes.
- the surface-modified nanoparticles have an average particle size of from 10 nm to less than 200 nm, preferably from 10 nm to 100 nm.
- the particle size of nanoparticles can be determined by different methods. Dry methods such as transmission electron microscopy often provide smaller particle sizes than the dynamic light scattering measurement, as in the latter method a relatively tightly bound solvent envelope requires larger values.
- the particle size data in this application are generally related to dynamic light scattering results.
- the carrier material is selected from the group consisting of mineral oils, synthetic hydrocarbons, polyglycols, esters and ester compounds, PFPE, native oils and derivatives of native oils, aromatic oils such as phenyl ethers and mixtures thereof.
- Polygkycols, esters and synthetic hydrocarbons are particularly preferably used as carrier material.
- composition of the present invention containing the nanoparticles and the carrier may further be incorporated into a lubricant become.
- This lubricant may be in the form of fats, pastes, oils and is selected from the group consisting of a lubricating oil or mixtures of lubricating oils, polyglycols, silicone oils, perfluoropolyethers, mineral oils, esters, synthetic hydrocarbons, phenyl ethers, native oils and derivatives of native oils.
- organic or inorganic thickeners in particular PTFE, graphite, metal oxides, boron nitride, molybdenum disulfide, phosphates, silicates, sulfonates, polyimides, metal soaps, metal complex soaps, ureas and mixtures thereof, solid lubricants such as graphite, M0S2.
- compositions which are used as a concentrate in one of the above-mentioned lubricants are particularly preferred.
- soluble additives in particular aromatic amines, phenols, phosphates, as well as corrosion inhibitors, antioxidants, anti-wear agents, friction reducing agents, means for protection against metal influences, UV stabilizers may be present in the composition.
- composition of the invention generally consists of 0.1 to 40 wt .-% surface-modified nanoparticles, in particular 2 to 20 wt .-% surface-modified nanoparticles, and 99.9% to 60% by weight of carrier material, in particular 8 to 80 wt. -% carrier material.
- the introduction of the nanoparticles into the carrier material can take place in two ways.
- dispersions of nanoparticles can be produced in a sol-gel process and surface-modified in the dispersion, and then the dispersion can be prepared by adding the support material and removing the volatile solvents.
- This process can be referred to as redispersing and has the advantage that the nanoparticles are always wetted by liquid and thus the risk of agglomeration is reduced.
- This method is described in the following examples.
- the solvents may be removed and the dry particles isolated. By dispersing under shear and optionally elevated temperature, the particles can be incorporated. Which method is to be used depends on various factors such as particle type, particle sizes, type and extent of surface coverage and chemical nature of the carrier material and must be individually tailored.
- This composition can then be incorporated into any lubricant so that, based on the final formulation of 0.1-10% nanoparticles, 99.9-90% lubricant.
- FIG. 1 Particle size distribution of a batch of Levasil 200N / 30%
- Figure 2 Particle size of the S1O2 dispersion, wherein the particles with the
- FIG. 3 Particle size of the S1O2 dispersion after functionalization with
- FIG. 4 Particle size distribution in polyglycol (Example 4)
- FIG. 5 The theological properties of the nanoparticles
- SiO 2 nanoparticles The preparation of SiO 2 nanoparticles is described, for example, in: W. Stöber, A. Fink, Journal of Colloid and Interface Science 26, 62-69, 1968 or in: Chen Wang et al. Matehals Letters 6_1, 2007, 506 - 510.
- the disadvantage of using the Stöber process in production is that the resulting dispersions have low levels of SiO 2 nanoparticles, typically around 3% by mass S1O 2.
- the stability of the nanoparticles and also the nature of the particles which form are determined by the choice of reaction conditions, in particular the pH.
- Levasil Under the trade name Levasil (Akzo Nobel, formerly HC Starck) aqueous dispersions are offered with solids contents of up to 50%. For example, Levasil 200N / 30% is a 30% dispersion stabilized with ammonia. The particle size is given as about 55 nm. This size distribution is confirmed by the diagram in Figure 1, which shows the particle analysis with a Malvern Zetasizer. Also available from Akzo Nobel under the trade name Bindzil are S1O2 nanodispersions with particle sizes around 10 nm and solids contents up to 40%, the surfaces of which are modified with epoxysilane.
- 83.11 g of the dispersion of functionalized nanoparticles according to Example 2 are mixed with 28.10 g of water-miscible polyglycol (monomers ethylene oxide and propylene oxide, kinematic viscosity 100 mm 2 / sec at 40 ° C.) in a rotary evaporator while heating with the oil bath to 100 ° C. and applying a vacuum, for example with a water jet pump, concentrated.
- the result is a clear liquid.
- the high dispersion to oil ratio is required in order to be able to produce concentrations of 10% nanoparticles in the polyglycol in the low concentration of SiO 2 particles on which the dispersions prepared in the Stöber process are based.
- polyglycol dispersions are prepared which in all cases build on the dispersion of Example 1.
- silanes phenyltrimethoxysilane and triethoxy (octyl) silane were used in addition to butyltrimethoxysilane. It was modified with a silane per nm 2 analogously to Example 2. In all cases, clear liquids result after redispersion. Table 1 shows that the kinematic viscosity is only slightly increased. The content of Si0 2 is also reflected in the higher density.
- Table 1 shows the data of the 10% dispersions of the butyl silane, octyl silane and phenyl silane modified nanoparticles in polyglycol.
- the dynamic viscosity of the nanoparticle-containing oils was determined as a function of the shear rate using a cone / plate system on the rheometer.
- the shear rate is increased logarithmically from 50 sec “1 to 5000 sec " 1 .
- the dynamic viscosity remains independent of the shear rate, so it is observed Newton's flow behavior (see FIG. 5).
- Aerosil-containing mixture designated 4e in FIG. 5, thus shows a pronounced deviation from Newton 's flow behavior, which can be explained by an interaction of the unmodified particles.
- Table 2 shows little influence on the theological properties of the nanoparticles. So there are also highly concentrated dispersions, such as Levasil, possible as a nanoparticle source.
- nanoparticle dispersion containing 1% Si0 2 .
- Example 6 The nanoparticles in Example 6 have a small, negligible influence on the rheological properties, resulting in VKA endurance a slight deterioration.
- the wear factor is increased slightly, the coefficient of friction remains the same.
- the welding force a slight improvement is observed.
- the effect on friction and wear is therefore dependent on the experimental conditions and can also lead to deterioration. There is no effect as an anti-wear additive.
- Gear oil formulations were made with 60 nm SiO 2 particles with a butyl surface modification. For this purpose, a 10% dispersion of the modified nanoparticles in polyglycol was used, which can be easily stirred into the formulation. The concentration of nanoparticles in the final formulation is 1%.
- the formulation was prepared in two viscosity layers (100 and 220 est).
- Corrosion protection additives 0,305 0,305 0,305 0,305 0,305
- the gray speckling is significantly reduced when nanoparticles are used in a polyglycol gear oil. Overall, it can be stated that the nanoparticles have significantly improved the gray-particle bearing capacity by using the two compositions containing the nanoparticles, when they are present as a deposit on the surfaces of the drive elements starting from a good level of references 100 est and 220 est) are.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011103215A DE102011103215A1 (en) | 2011-06-01 | 2011-06-01 | Use of nanoscale materials in a composition to prevent fatigue phenomena in the near-surface microstructure of drive elements |
PCT/EP2012/001997 WO2012163468A1 (en) | 2011-06-01 | 2012-05-09 | Use of nanoscale materials in a composition for preventing symptoms of fatigue in the surface-closed structure of drive elements |
Publications (2)
Publication Number | Publication Date |
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EP2714866A1 true EP2714866A1 (en) | 2014-04-09 |
EP2714866B1 EP2714866B1 (en) | 2016-06-29 |
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ID=46062230
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Application Number | Title | Priority Date | Filing Date |
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EP12720427.9A Active EP2714866B1 (en) | 2011-06-01 | 2012-05-09 | Use of nanoparticles in a composition to improve fatigue life and pitting on the surface of a drive train |
Country Status (10)
Country | Link |
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US (1) | US9296970B2 (en) |
EP (1) | EP2714866B1 (en) |
JP (1) | JP5762629B2 (en) |
KR (1) | KR101594771B1 (en) |
CN (1) | CN103732728A (en) |
BR (1) | BR112013031020B1 (en) |
DE (1) | DE102011103215A1 (en) |
DK (1) | DK2714866T3 (en) |
ES (1) | ES2589812T3 (en) |
WO (1) | WO2012163468A1 (en) |
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JP2015117345A (en) * | 2013-12-19 | 2015-06-25 | 株式会社アドマテックス | Lubricant composition and method for producing the same |
CN104450007A (en) * | 2014-11-19 | 2015-03-25 | 上海应用技术学院 | High temperature-resistant lubricating grease for electric conduction and preparation method thereof |
RU2582999C1 (en) * | 2015-02-20 | 2016-04-27 | Общество с ограниченной ответственностью "Инженерная смазочная компания "МИСКОМ" | Composite lubricant |
KR102633391B1 (en) * | 2015-05-04 | 2024-02-06 | 픽셀리전트 테크놀로지스 엘엘씨 | Improved lubricants using nano-additives |
KR101714394B1 (en) * | 2015-11-30 | 2017-03-10 | 계명대학교 산학협력단 | manufacturing method of solid lubricants for bearing havig improved heat resistance |
CN106398805A (en) * | 2016-08-31 | 2017-02-15 | 中山大学惠州研究院 | Method for improving elastic deformability of lithium-based lubricating grease by using surface modified nanoparticles |
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CN109233943B (en) * | 2018-09-26 | 2021-09-03 | 山东莱克科技有限公司 | Lubricant prepared from nano material and preparation method thereof |
EP3839016A1 (en) * | 2019-12-20 | 2021-06-23 | Total Marketing Services | Lubricating composition for gear |
CN112961721B (en) * | 2020-12-30 | 2022-09-20 | 徐州振峰新材料科技有限公司 | Graphene-containing lubricating protection additive for lubricating oil |
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WO2010077773A1 (en) * | 2008-12-30 | 2010-07-08 | 3M Innovative Properties Company | Lubricant composition and method of forming |
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2011
- 2011-06-01 DE DE102011103215A patent/DE102011103215A1/en not_active Withdrawn
-
2012
- 2012-05-09 JP JP2014513067A patent/JP5762629B2/en not_active Expired - Fee Related
- 2012-05-09 CN CN201280025402.6A patent/CN103732728A/en active Pending
- 2012-05-09 BR BR112013031020-0A patent/BR112013031020B1/en not_active IP Right Cessation
- 2012-05-09 EP EP12720427.9A patent/EP2714866B1/en active Active
- 2012-05-09 ES ES12720427.9T patent/ES2589812T3/en active Active
- 2012-05-09 KR KR1020137031294A patent/KR101594771B1/en active IP Right Grant
- 2012-05-09 WO PCT/EP2012/001997 patent/WO2012163468A1/en active Application Filing
- 2012-05-09 US US14/122,603 patent/US9296970B2/en active Active
- 2012-05-09 DK DK12720427.9T patent/DK2714866T3/en active
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See references of WO2012163468A1 * |
Also Published As
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DK2714866T3 (en) | 2016-09-19 |
JP5762629B2 (en) | 2015-08-12 |
BR112013031020B1 (en) | 2019-11-19 |
EP2714866B1 (en) | 2016-06-29 |
JP2014518932A (en) | 2014-08-07 |
DE102011103215A1 (en) | 2012-12-06 |
ES2589812T3 (en) | 2016-11-16 |
CN103732728A (en) | 2014-04-16 |
BR112013031020A2 (en) | 2018-04-24 |
US9296970B2 (en) | 2016-03-29 |
KR101594771B1 (en) | 2016-02-17 |
US20140162914A1 (en) | 2014-06-12 |
WO2012163468A1 (en) | 2012-12-06 |
KR20140018976A (en) | 2014-02-13 |
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