WO2008104384A2 - Composition de lubrifiant - Google Patents

Composition de lubrifiant Download PDF

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Publication number
WO2008104384A2
WO2008104384A2 PCT/EP2008/001547 EP2008001547W WO2008104384A2 WO 2008104384 A2 WO2008104384 A2 WO 2008104384A2 EP 2008001547 W EP2008001547 W EP 2008001547W WO 2008104384 A2 WO2008104384 A2 WO 2008104384A2
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WO
WIPO (PCT)
Prior art keywords
lubricant composition
molybdenum
calcium
hydroxide
composition according
Prior art date
Application number
PCT/EP2008/001547
Other languages
German (de)
English (en)
Inventor
Karl-Heinz Hensel
Volker Von Drach
Rachel Kling
Original Assignee
Setral Chemie Gmbh
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 Setral Chemie Gmbh filed Critical Setral Chemie Gmbh
Publication of WO2008104384A2 publication Critical patent/WO2008104384A2/fr

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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
    • C10M141/08—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 sulfur-, selenium- or tellurium-containing compound
    • 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
    • C10M141/10—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 phosphorus-containing compound
    • 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
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • 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
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • C10M2201/0413—Carbon; Graphite; Carbon black 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/061—Carbides; Hydrides; Nitrides
    • 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
    • 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
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • 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
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/0653—Sulfides; Selenides; Tellurides 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/066—Molybdenum sulfide
    • 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
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/081—Inorganic acids or salts thereof containing halogen
    • 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
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
    • 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
    • C10M2201/087—Boron oxides, acids or 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
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C10M2213/062—Polytetrafluoroethylene [PTFE]
    • 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
    • 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
    • C10M2223/045—Metal containing thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/02—Groups 1 or 11
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/06—Groups 3 or 13
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/08—Groups 4 or 14
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/12—Groups 6 or 16
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/14—Group 7
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/16—Groups 8, 9, or 10
    • 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
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/015—Dispersions of solid lubricants
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/015—Dispersions of solid lubricants
    • C10N2050/02—Dispersions of solid lubricants dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/08—Solids
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/10—Semi-solids; greasy

Definitions

  • the present invention relates to a lubricant composition which is suitable in particular as a solid lubricant additive for various applications, such as Reibbelä- GE, engineering plastics, suspensions, lubricants and an improvement in the technical properties of the additive products, coupled with an optimization of their efficiency.
  • Lubricating oils is usually added to a solid lubricant additive in order to improve the tribological and wear-reducing properties of the lubricant, in particular under load (pressure and / or temperature).
  • metal sulfides such as molybdenum disulfide, tungsten disulfide, tin sulfides, bismuth trisulfide, antimony trisulfide, zinc sulfide, etc. are often used. There is extensive art which describes the use of such metal sulfides.
  • CH 644890 discloses a lubricant for use at temperatures above 200 ° C., which contains a solid lubricant from a mixture of 60 to 90% by weight of graphite and 10 to 40% by weight of a metal sulfide, in particular molybdenum disulfide
  • US 5,641,731 describes a concentrate useful as an additive to engine oil and 0.35 to 15.0 weight percent of an oil-soluble molybdenum compound, 0.25 to 25.0 weight percent of non-aqueous polytetrafluoroethylene suspensions and up to 90% by volume of a synthetic oil (see for example claim 38).
  • WO 00/52116 describes a lubricant composition containing a layered lamellar solid lubricant such as tin disulfide and optionally other solid lubricants.
  • EP 244 099 A describes solid lubricant additives for gear oils containing molybdenum disulfide, graphite, tungsten disulfide, tin sulfide, polytetrafluoroethylene, etc.
  • EP 606 970 describes a solid lubricant composition which comprises 30 to 70 parts by weight of graphite and 70 to 30 parts by weight of a mixture of at least two components selected from (a) alkali metal molybdate, (b) an alkali metal and / or alkaline earth metal sulfate and ( c) an alkali phosphate, wherein the ratio of the two components is in the range of 0.05 / 1 to 20/1.
  • the composition has good film-forming properties and good lubricity, with the coefficient of friction being substantially unaffected by external conditions. In addition, it does not appear corrosive to the lubricated substrates.
  • the lubricity of the known lubricant compositions is unsatisfactory. There has now been found a lubricant composition which has excellent lubricity.
  • the subject of the present invention is therefore a lubricant composition
  • a lubricant composition comprising:
  • a) graphite b) one or more metal compounds selected from calcium fluoride, lithium fluoride, sodium aluminum fluoride (cryolite), potassium aluminum fluoride, potassium tetrafluoroborate (KBF 4 ), calcium sulfate, strontium sulfate, barium sulfate, magnesium carbonate, calcium carbonate, magnesium calcium carbonate ( Dolomite), lithium carbonate, lithium hydroxide, magnesium hydroxide, calcium hydroxide, aluminum hydroxide, aluminum oxide, silicon dioxide, titanium dioxide and iron (II) iron (III) oxide (magnetite) and c) one or more organic molybdenum compounds.
  • metal compounds selected from calcium fluoride, lithium fluoride, sodium aluminum fluoride (cryolite), potassium aluminum fluoride, potassium tetrafluoroborate (KBF 4 ), calcium sulfate, strontium sulfate, barium sulfate, magnesium carbonate, calcium carbonate, magnesium calcium carbonate ( Dolomite),
  • the component (a) is preferably used in an amount in the range of 10 to 80 wt .-%, in particular 30 to 70 wt .-% and particularly preferably 40 to 60 wt .-%, based on the total weight of the composition.
  • Component (b) is generally used in an amount of from 20 to 75% by weight, preferably from 30 to 70% by weight and in particular from 40 to 60% by weight, based on the total weight of the composition.
  • the component (c) is used generally in an amount in the range of 0.1 to 10 wt .-%, preferably 0.2 to 8 wt .-% and in particular 0.5 to 6 wt .-%, based on the Total weight of the composition.
  • the component (c) is in particular organic molybdenum compounds. These include molybdenum dithiocarbamates and molybdenum dithiophosphates and the sulfurized derivatives thereof.
  • the molybdenum dithiocarbamates are preferably those of the formula (1)
  • R 1 and R 2 independently of one another are H or a hydrocarbon radical, at least one of the radicals being a hydrocarbon radical, X is O or S, b is at least 2 and a is at least 1, depending on the oxidation state of the molybdenum, c is at least 1, depending on the oxidation state of the molybdenum, and d is 0 or at least 1, depending on the oxidation state of the molybdenum.
  • a and b are in the range of 1 to 5
  • c is in the range of 1 to 6
  • d is generally 0 or in the range of 2 to 10.
  • a is 1 or 2
  • b is 1 or 2
  • c for 1 or 2
  • d for 0 or 2.
  • the hydrocarbon radicals comprise in particular 3 to 26 carbon atoms and more preferably 4 to 18 carbon atoms. They may be aliphatic radicals, such as alkyl or alkenyl groups, alicyclic radicals, such as cycloalkyl or cycloalkenyl groups, aromatic radicals, such as phenyl or naphthyl groups, which may optionally be substituted. Suitable substituents for the aliphatic radicals are halogen, in particular chlorine or fluorine, amino, C 1 -C 2 -alkoxy, mercapto, C 1 -C 2 -alkylmercapto, etc. Suitable substituents for alicyclic radicals are the abovementioned substituents and also phenyl. Suitable substituents for aromatic radicals are, in particular, alkyl radicals having preferably 1 to 12 carbon atoms.
  • molybdenum dithiocarbamates of the formulas are used:
  • R 2 is hydrogen and X is S.
  • the molybdenum is preferably present at the oxidation state +5 or +6.
  • Examples of molybdenum dithiocarbamates are molybdenum di-n-butyl dithiocarbamate, which is commercially available under the name Molyvan A from Vanderbilt, and molybdenum ditride cyldithiocarbamate, which is commercially available under the name Molyvan 807 from Vanderbilt.
  • Molybdenum dithiocarbamates and their preparation are described, for example, in US 4,846,983, which is incorporated herein by reference.
  • Preferred molybdenum dithiophosphates correspond to the formulas a)
  • n 3, 4, 5 or R 1 and R 2 are independently selected from H,
  • R 1 and R 2 have the meanings mentioned above under a);
  • Molyvan L from Vanderbilt or Additin RC 3580 from Rheinchemie
  • Molybdenum dithiophosphates and their preparation are described, for example, in US 5,055,174, to which reference is made in its entirety.
  • the preparation of the lubricant compositions according to the invention is carried out by mixing and homogenizing the components.
  • the procedure is such that components (a) and (b) are first mixed and homogenized.
  • components (a) and (b) may be ground together, conveniently up to a particle size in the range of 100 nm to 25 ⁇ m.
  • the mixture obtained by homogenizing or grinding components (a) and (b) may also be referred to as activated graphite.
  • Component (c) may be mixed before or during homogenization or milling or after.
  • the grinding of the components (a) or (b) is carried out by means of conventional devices, in particular with a ball mill or colloid mill.
  • the lubricant compositions according to the invention may additionally contain one or more further lubricants.
  • These may be polytetrafluoroethylene (PTFE) or boron nitride or metal sulfides selected from tin monosulfide (SnS), tin disulfide (SnS 2 ), tin trisulfide (Sn 2 S 3 ) or mixed sulfides thereof, zinc sulfide, bismuth III sulfide (Bi 2 S 3 ), molybdenum disulfide, antimony trisulfide (Sb 2 S 3 ), tungsten disulfide, copper sulfides (CuS, Cu 2 S) or mixed sulfides thereof, iron sulfides (FeS, Fe 2 S 3 or mixed sulfides thereof) and mixtures thereof.
  • PTFE polytetrafluoroethylene
  • SnS tin monosulfide
  • SnS 2 tin
  • the lubricant composition contains an additional lubricant, this is generally present in a proportion of 1 to 40 wt .-%, preferably 5 to 30 wt .-%, in particular 10 to 25 wt .-% and particularly preferably 10 to 20 wt. %, based on the total weight of the composition.
  • the lubricant compositions of the invention may optionally contain other conventional components.
  • examples of such components are binders or thickeners, as described below in connection with the solid lubricants to which the lubricant compositions may be added.
  • the lubricant compositions according to the invention may also contain organic fillers, in particular polymers, such as PTFE, polyethylene or aramid powder (eg Twaron® 5011 from Teijin Twaron) and cellulose fibers (eg Arbocel® from Rettenmaier or Setralit® NfU / 346/1 from ECCO).
  • the lubricant compositions according to the invention can be added as an additive to liquid to pasty lubricants in order to improve the tribological and wear-reducing properties of the lubricant, in particular under load (pressure and / or temperature).
  • Such lubricants are known in the art and z. As described in Ullmann's Encyclopedia of Industrial Chemistry, 5th ed., Vol. A 15, 429-443, 1990. Examples of such liquids are:
  • Mineral oils synthetic oils, e.g., synthetic hydrocarbons, such as polyolefin oils, chlorinated hydrocarbons or hydrocracked hydrocarbon oils (isoparaffins), polyether oils, ester oils, phosphoric acid esters, silicone oils, etc., alkylated cyclic hydrocarbons, such as polyalkylated cyclopentane or alkylbenzenes,
  • Vegetable oils such as rapeseed oil, linseed oil or HOS ("High Oleic Sunflower", a refined sunflower oil), - Polyglycols.
  • Useful polyolefin oils are in particular polymers of C 8 -C 2 - ⁇ -olefins.
  • Polyether oils include aliphatic polyether oils such as poly (alkylene glycols), e.g. As polyethylene glycol, poly (propylene glycol) and copolymers thereof and the mono- and diethers, mono- or diesters and desired ether esters thereof. There are water-soluble and water-insoluble types into consideration. Aliphatic polyether oils also include perfluoropolyalkyl ethers. Preferred polyether oils are polyphenyl ethers and alkylated polyphenyl ethers.
  • the ester oils are in particular the following ester types:
  • Branched primary alcohols are, in particular, the alcohols obtained by oxosynthesis or aldol condensation, such as 2-ethylhexanol and the C 7 , Cs and Cg oxo alcohols. Sebacin, azelaic and adipic acid are particularly preferred as the dicarboxylic acid.
  • poly (alkylene glycol) poly (ethylene glycol) having a molecular weight of 100 to 600 is preferred.
  • esters of neopentylpolyols are, in particular, esters of neopentyl glycol, trimethylolethane, trimethylolpropane, pentaerythritol and the ethoxylated and / or propoxylated products thereof.
  • Preference according to the invention is given to mineral oils, ester oils and polyether oils.
  • liquid lubricants are engine oils, gear oils, turbine oils, hydraulic fluids, pump oils, heat transfer fluids, insulating oils, drilling oils, cutting oils, compressor oils, chain oils, glass engine oils, release oils, gun oils, cylinder oils, solventborne or waterborne bonded coatings (prior to evaporation of the carrier liquid). , Coolants etc.
  • Semi-solid lubricants are generally based on mineral or synthetic oils (as indicated above) in conjunction with suitable thickening agents. Examples of semi-solid lubricants are greases, pastes, carriage greases, rolling and plain bearing greases, etc.
  • NfU346 / 1 from ECCO amorphous or hydrophobized silica
  • Phyllosilicates such as bentonites, attapulgite and the like, which may be hydrophobicized, metal salts, oxides, hydroxides, sulfides and related compounds, in particular metal salts of fatty acids, such as stearic acid or 12-
  • Hydroxystearic acid The metal salts of the fatty acids may be used in admixture with salts of carboxylic acids such as acetic acid, benzoic acid or azelaic acid.
  • Useful cations are z. Li + , Na + , K + , Mg 2+ , Ca 2+ , Sr 2+ , Ba 2+ , Al 3+ , [Al (OH)] 2+ , TiO 2+ , - organic fillers, especially polymers such as PTFE or polyethylene or aramid powder (eg Twaron® 5011 from Teijin Twaron) as well as cellulose fibers (eg Arbocel® from Rettenmaier or Setralit® NfU346 / 1 from ECCO).
  • lubricant compositions of the present invention may be combined with other solid lubricants in any proportion.
  • the lubricant compositions of the invention are liquid to semi-solid lubricants, such as oils and fats, generally in an amount of 0.1 to 25 wt .-%, preferably 0.2 to 15 wt .-% and in particular 0.5 to 2 wt. -%, based on the total weight of the lubricant added.
  • the addition of the lubricant additive may also be such that the homogenized or ground mixture of components a) and b) and component c) are added separately to the lubricant.
  • a particular form of semi-solid lubricants are pastes.
  • the addition of the lubricant compositions according to the invention is generally from 10 to 75 wt .-%, preferably 20 to 60 wt .-% and in particular 25 to 55 wt .-%, based on the total weight the paste.
  • the addition of the lubricant additive is carried out as in the above-mentioned liquid to semi-solid lubricants.
  • the lubricant compositions according to the invention are generally in an amount of 0.5 to 30 wt .-%, preferably 2 to 25 wt .-% and in particular 5 to 20 wt .-%, with inorganic or organic binders (eg phenolic resins ) in an amount of 5 to 20 wt .-%, preferably 10 to 15 wt .-%, combined, both components based on the total weight of the lubricant.
  • the remainder, at 100% by weight, is made up of aqueous or organic solvents or suspending agents, such as benzines, ethyl acetate or aromatic compounds, such as xylene.
  • the lubricant compositions according to the invention can also be used as a solid lubricant in conjunction with solids, for example in friction linings (brake and clutch linings), engineering plastics (eg self-lubricating plastics) etc.
  • the used amount of the lubricant compositions of the invention generally from 0.1 to 25 wt .-%, preferably 0.5 to 10 wt .-% and in particular 3 to 8 wt .-%, based on the total solids.
  • the lubricant compositions given in the following table were prepared by mixing the components in a slow-moving blade mixer at room temperature for 2 hours (Examples 1 and 2).
  • Example 3 the components were ground for 24 hours at room temperature in a porcelain ball mill (laboratory equipment, retsch company).

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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 invention concerne une composition de lubrifiant comprenant a) du graphite, b) un ou plusieurs composés métalliques choisis parmi fluorure de calcium, fluorure de lithium, fluorure de sodium et d'aluminium (cryolithe), fluorure de potassium et d'aluminium, tétrafluoroborate de potassium (KBF4), sulfate de calcium, sulfate de strontium, sulfate de baryum, carbonate de magnésium, carbonate de calcium, carbonate de magnésium-calcium (dolomite), carbonate de lithium, hydroxyde de lithium, hydroxyde de magnésium, hydroxyde de calcium, hydroxyde d'aluminium, oxyde d'aluminium, dioxyde de silicium, dioxyde de titane et oxyde de fer (II) - fer (III) (magnétite) et c) un ou plusieurs composés de molybdène organiques. La composition de lubrifiant selon cette invention possède un effet lubrifiant remarquable.
PCT/EP2008/001547 2007-02-27 2008-02-27 Composition de lubrifiant WO2008104384A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07103164.5 2007-02-27
EP07103164A EP1967574A1 (fr) 2007-02-27 2007-02-27 Composition de lubrifiant

Publications (1)

Publication Number Publication Date
WO2008104384A2 true WO2008104384A2 (fr) 2008-09-04

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EP (1) EP1967574A1 (fr)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022033700A1 (fr) 2020-08-14 2022-02-17 H.C. Carbon Gmbh Lubrifiant granulaire, son procédé de production et son utilisation
CN114630887A (zh) * 2019-10-30 2022-06-14 Gkn动力传动国际有限公司 用于等速万向节的包含硫化锌和硫化铜以及二硫化钼和/或二硫化钨的润滑脂组合物

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Publication number Priority date Publication date Assignee Title
DE102009005842A1 (de) * 2009-01-20 2010-07-29 Jakobi, Hans W. Mittel zur Verbesserung der Kraftstoffmotorenleistung
JP6197123B2 (ja) * 2015-03-31 2017-09-13 出光興産株式会社 ガソリンエンジン用潤滑油組成物、及びその製造方法
CN107653024B (zh) * 2017-09-11 2020-05-26 东华大学 一种减摩耐磨润滑剂的制备方法

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US5037564A (en) * 1988-03-09 1991-08-06 Dai-Ichi Kogyo Seiyaku Co., Ltd. Dispersing agent for nonaqueous systems and a nonaqueous dispersion containing the same
JP3954662B2 (ja) * 1995-09-12 2007-08-08 昭和シェル石油株式会社 オープンギヤー用グリース組成物
JP4201902B2 (ja) * 1998-12-24 2008-12-24 株式会社Ａｄｅｋａ 潤滑性組成物

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114630887A (zh) * 2019-10-30 2022-06-14 Gkn动力传动国际有限公司 用于等速万向节的包含硫化锌和硫化铜以及二硫化钼和/或二硫化钨的润滑脂组合物
CN114630887B (zh) * 2019-10-30 2023-02-17 Gkn动力传动国际有限公司 用于等速万向节的包含硫化锌和硫化铜以及二硫化钼和/或二硫化钨的润滑脂组合物
WO2022033700A1 (fr) 2020-08-14 2022-02-17 H.C. Carbon Gmbh Lubrifiant granulaire, son procédé de production et son utilisation

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