EP0286140B1 - Lubrifiant ou concentré de lubrifiant - Google Patents

Lubrifiant ou concentré de lubrifiant Download PDF

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Publication number
EP0286140B1
EP0286140B1 EP88105726A EP88105726A EP0286140B1 EP 0286140 B1 EP0286140 B1 EP 0286140B1 EP 88105726 A EP88105726 A EP 88105726A EP 88105726 A EP88105726 A EP 88105726A EP 0286140 B1 EP0286140 B1 EP 0286140B1
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EP
European Patent Office
Prior art keywords
lubricant
weight
oil
mpa
viscosity
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.)
Expired - Lifetime
Application number
EP88105726A
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German (de)
English (en)
Other versions
EP0286140A1 (fr
Inventor
Erasmus Dr. Froeschmann
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.)
Dr Erasmus Froeschmann Te Bremen Bondsrepubliek
Original Assignee
Froeschmann Erasmus Dr Max Grill Gesmbh
GRILL MAX GmbH
Froeschmann Erasmus Dr
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Filing date
Publication date
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Publication of EP0286140A1 publication Critical patent/EP0286140A1/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
    • 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
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
    • 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
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • 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
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/04—Fatty oil fractions
    • 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
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/02—Well-defined hydrocarbons
    • C10M105/06—Well-defined hydrocarbons aromatic
    • 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
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/18—Ethers, e.g. epoxides
    • 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
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/36—Esters of polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
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    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/38—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
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    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • C10M107/08—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing butene
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    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/22—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/28—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
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    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
    • C10M107/34—Polyoxyalkylenes
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    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/16—Ethers
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    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
    • C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
    • C—CHEMISTRY; METALLURGY
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    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/32—Heterocyclic sulfur, selenium or tellurium compounds
    • C10M135/36—Heterocyclic sulfur, selenium or tellurium compounds the ring containing sulfur and carbon with nitrogen or oxygen
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    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
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    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • C10M137/10—Thio derivatives
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    • 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
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    • C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
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    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/06—Well-defined aromatic compounds
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    • C10M2203/065—Well-defined aromatic compounds used as base material
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    • C10N2070/02—Concentrating of additives

Definitions

  • the invention relates to a new lubricant or lubricant concentrate based on mineral oil and / or synthetic oil with improved lubricating properties, in particular improved load bearing, sliding and corrosion protection properties.
  • solid lubricants were developed which were introduced between the moving metal parts, such as graphite, MoS2, TiO2, Ca3 (PO4) 2, Teflon and the like, which were introduced as lubricious outer layers, suspensions, pastes or greases. Thereby the friction partners were better separated and their resilience increased. With centripetal movements of higher peripheral speed and at higher temperature, however, the solid lubricants and carrier media separate sooner or later due to their different specific densities. This limited the long-term lubrication. In a further step, it was possible to apply suitable metal cations to rubbing surfaces during operation from chemical complexes dissolved in a lubricant.
  • DE-PS 941 678 discloses lubricating oils containing soluble reaction products of phosphorus pentasulfide with liquid or solid aliphatic hydrocarbons or terpene hydrocarbons.
  • a lubricating oil is known which contains metal-containing alkylphenol sulfide esters in combination with zinc sulfonates.
  • DE-AS 1 444 892 a lubricating oil is known which contains a salt of an aromatic zinc dithiophosphate and a zinc carboxylic acid salt in the presence of water. While the first two products are lubricating oil detergents, the latter product is intended to prevent corrosion of silver bearing surfaces.
  • a lubricating oil which contains a salt of a substituted succinic acid, optionally together with a salt of an alkylated or esterified phosphoric acid. It is an antioxidant with a detergent effect.
  • a combination of dithiophosphate and dithiophosphinate salts is known from DE-AS 1 271 878.
  • From DE-OS 15 94 555 cutting oils containing free sulfur, a dialkyldithiophosphate and a chlorinated hydrocarbon are known.
  • Lubricating oils containing zinc or antimondithiocarbamate are known from US Pat. No. 3,462,367. Lubricating oils are known from US Pat. No.
  • Lubricating oil additives are also known from US Pat. No. 2,734,864, which are formed from a dithiophosphate of the alkaline earth metal salts in combination with a complex reaction product of phosphorus sulfides, wool fat and alcohol esters.
  • the undefined product contains considerable amounts of barium and zinc.
  • Such a lubricating oil additive cannot be used in practice because of its unbearable odor, which also endangers the people who come into contact with it.
  • lubricants based on mineral oil or synthetic oil which, in addition to the mineral or synthetic oil, contain an ester of an epoxidized fatty acid having 10 to 18 carbon atoms with mono- or polyhydric alcohols, an alkyl -, Aralkyl- or aryldithiophosphate of zinc, lead, tin, tungsten, molybdenum, niobium or lanthanum and optionally contain a sulfur phosphorus compound.
  • lubricants based on mineral or synthetic oil or lubricant concentrates which in addition to a lead, tungsten, molybdenum and / or vanadium dithiophosphate esterified with alkyl, aryl or aralkyl groups, also contain at least one zinc dialkyldithiophosphate and a metal-free sulfur-phosphorus compound.
  • These last-mentioned lubricants which have found widespread use, no longer meet all of the requirements placed on modern long-term and high-performance lubricants. Their coefficient of friction and abrasion are too high, their shelf life is inadequate, and long-term use reveals a too high complaint rate in the area of lubrication technology
  • the object of the invention was therefore to create a new lubricant or lubricant concentrate based on mineral or synthetic oil, which is further improved with regard to its lubricating properties, in particular its friction and wear properties, thus noticeably reducing the need for energy and spare parts and thus also meets the highest requirements.
  • the lubricants or lubricant concentrates according to the invention have significantly improved properties compared to the known lubricants or lubricant concentrates, in particular with regard to friction and wear and thus a reduced need for energy and spare parts. It is believed that this is due to the fact that when they are used in the rubbing and sliding area, metallic glass surfaces are formed from amorphously solidified metal melts, which no longer have metal crystal lattice structures.
  • the glass-like smooth friction and sliding surfaces which are presumably produced with the lubricant or lubricant concentrate according to the invention, significantly improve the entire lubrication process, since the coefficient of friction and with it the abrasion, oxidation and corrosion are significantly reduced.
  • the so-called fretting rust is also prevented by the lubricant or lubricant concentrate according to the invention.
  • the lubricants or lubricant concentrates according to the invention are extremely environmentally friendly since they contain no lead, no sulfurized whale sperm oil and hardly any phosphorus. This has been shown by fish tests and bacterial growth tests which were carried out with the lubricants or lubricant concentrates according to the invention. It was also found that they are 60% biodegradable in normal soil within 3 to 4 months, so that they can also be described as extremely environmentally friendly.
  • the quaternary carbon atom-containing polyol ether compounds used according to the invention are thermally very stable and therefore allow high operating temperatures of up to 300 ° C. They therefore open up the possibility of lifetime lubrication of highly loaded motors, turbines, roller bearings, constant velocity joints and other high-performance machine elements.
  • lubricant or lubricant concentrate based on mineral and / or synthetic oil used here means both lubricating oils and lubricating greases based on mineral and / or synthetic oil.
  • Compounds containing quaternary carbon atoms are to be understood here as those compounds in which the four main valences of at least one carbon atom per molecule are occupied by four carbon atoms.
  • Such compounds are mono-, di- and trimeric pentaerythritheres, other polyol ethers, pentaerythritol ethoxyethers and telomeric acid pentaerythritheres and the corresponding ethoxylated ethers.
  • the lubricants or lubricant concentrates according to the invention have significantly improved properties compared to the known lubricants or lubricant concentrates, as the examples below show.
  • the glass-like smooth friction and sliding surfaces produced by the lubricant according to the invention save drive energy and lower the coefficient of friction per se and by building up a very adhesive boundary lubrication film which enables elastohydrodynamic lubrication even under point loads.
  • the friction temperature of the lubricant and lubrication point is reduced, the oxidation resistance of both is extended and the metallic friction partners are subjected to less specific alternating loads and temperatures. Overall, these effects greatly reduce wear and significantly increase the service life of the friction partners and the lubricant.
  • the lubricant or lubricant concentrate contains, as component (b), mono-, di- or tripentaerythritol, the alcoholic hydroxyl group (s) of which is preferably an unbranched or branched alkyl, aralkyl or aryl group having 6 to 18 carbon atoms 6 to 12 carbon atoms, in particular 8 to 12 carbon atoms, is (are) etherified or ethoxy-etherified.
  • component (b) mono-, di- or tripentaerythritol
  • the lubricant or lubricant concentrate additionally contains a component with at least one free hydroxyl group.
  • the lubricant or lubricant concentrate according to the invention contains component (b) in an amount of 0.1 to 40% by weight, preferably 0.1 to 20% by weight, in particular 1 to 12 % By weight, especially from 2 to 6% by weight, based on the weight of the mineral and / or synthetic oil.
  • the lubricant or lubricant concentrate according to the invention contains as component (b) an ether and / or ethoxylated ether derivative of mono-, di- or tripentaerythritol and / or a telomeric acid pentaerythrity ether or an ethoxylated derivative thereof.
  • the lubricant or lubricant concentrate according to the invention preferably contains beet oil, natural oil and / or a synthetic oil with a viscosity in the range from 1.0 mPa.s at 20 ° C to 2.106 mPa.s at 20 ° C.
  • a mineral oil with a viscosity is particularly preferred from 1.0 mPa.s at 20 ° C to 540 mPa.s at 50 ° C as a natural oil and the use of an aromatic or aliphatic dicarboxylic acid ester, in particular poly- ⁇ -olefin-dicarboxylic acid ester, especially butyl ester, with a molecular weight in the range of 1000 to 3000, preferably of diisocyanate phthalate, trimethyladipate and dioctyl sebacate, a polyisobutylene with a molecular weight of 1000 to 100,000 and a viscosity of 200 to 43,000 mPa.s at 100 ° C, a polymethacrylate with a.
  • lubricant according to the invention and lubricant concentrate preferably contains a sulfur carrier, particularly a thiazole, at least one metal dialkyldithiocarbamate and / or a metal dialkyldithiophosphate and / or a phosphor carrier, in particular a Organnophosphit, preferably a Dialkylarylphosphit, particularly didecyl or Didodecylphenylphosphit, and / or a metal dialkyldithiophosphate .
  • a sulfur carrier particularly a thiazole
  • at least one metal dialkyldithiocarbamate and / or a metal dialkyldithiophosphate and / or a phosphor carrier in particular a Organnophosphit, preferably a Dialkylarylphosphit, particularly didecyl or Didodecylphenylphosphit, and / or a metal dialkyldithiophosphate
  • the sulfur carrier is preferably present in the lubricant or lubricant concentrate in an amount of 0.5 to 10% by weight, in particular 1 to 3% by weight, while the phosphorus carrier is preferably present in an amount of 0.1 to 10 % By weight, in particular from 0.1 to 5% by weight, especially from 0.5 to 2% by weight.
  • the lubricant or lubricant concentrate according to the invention can contain conventional antioxidants, metal deactivators, detergents, dispersants, antifoams and / or viscosity index improvers as further conventional additives.
  • polyol ether compounds used according to the invention with at least one quaternary carbon atom in the molecule include the following compounds:
  • the underlying mono- and dipentaerythritol has the structure: in which the hydroxyl groups are partially or completely etherified, the ether groups of which are preferably straight or branched alkyl, aralkyl or aryl groups having 6 to 18, preferably 8 to 12, carbon atoms.
  • Pentaerythrticianher examples include pentaerythritol monohexyläther, pentaerythritol monooctyläther, pentaerythritol monononyläther, pentaerythritol monodecyläther, pentaerythritol monododecyl, pentaerythritol monomyristyläther, pentaerythritol monohexadecyläther, pentaerythritol monostearyläther, pentaerythritol monooleyläther, pentaerythritol monoisostearyl- and -isopalmitinklaher; the corresponding dihexyl, dioctyl, dinonyl, didecyl, didodecyl, dimyristyl, dihexadecyl, distearyl, dioley
  • T telomer
  • R T or alkyl
  • telomeric acids are compounds with relatively high molecular weights and Long-chain, star-branched structures, which can be etherified in the usual way and whose ethers are valuable lubricants.
  • Mineral oils which can be used according to the invention are all the usual mineral oils, from isoparaffin oil with a viscosity of 1.0 mPa.s at 20 ° C to thin spindle oil with a viscosity of 12 mPa.s at 20 ° C to highly viscous bright stock and cylinder oil with a viscosity of 540 mPa .s at 50 ° C.
  • organophosphorus compounds which can be used as phosphorus supports according to the invention are compounds of the formula in which R in each case denotes a straight-chain, branched or cyclic alkyl group having 6 to 12 carbon atoms or phenyl group substituted in the o- or p-position by a lower alkyl radical having 1 to 6 carbon atoms.
  • organophosphorus compounds of the above formula are monodecyl diphenyl phosphite, didecylphenyl phosphite, Triphenyl phosphite, dioctyl phenyl phosphite, dihexyl phenyl phosphite, diisodecyl phenyl phosphite, diisooctyl phenyl phosphite, didecyl-o-methylphenyl phosphite and didecyl p-methylphenyl phosphite.
  • the metal dialkyldithiocarbamates which can be used according to the invention as sulfur carriers are compounds of the formula wherein Me is a metal from the group copper, silver, zinc, cadmium, boron, titanium, zirconium, tin, lead, vanadium, tantalum, antimony, chromium, molybdenum, tungsten, manganese, cobalt and nickel, preferably boron, nickel, cobalt or Molybdenum means.
  • the metal dialkyldithiophosphates which can be used according to the invention both as a sulfur carrier and as a phosphorus carrier are compounds of the formula wherein Me for a metal from the group copper, silver, zinc, cadmium, boron, titanium, zirconium, tin, lead, vanadium, tantalum, antimony, chromium, molybdenum, tungsten, manganese, cobalt and nickel, preferably for zinc, nickel, Titanium, vanadium, molybdenum, tungsten and manganese.
  • the alkyl group in the above-mentioned metal dialkyldithiocarbamate and metal dialkyldithiophosphates each preferably contain 4 to 8 carbon atoms, so that the metal salts mentioned are still soluble in the commercially available base oils.
  • particularly advantageous alkyl groups include the diene, i- and tert-butyl group, the n- and i-amyl group, the n- and i-hexyl group, the n- and i-heptyl group and the 2-ethylhexyl group.
  • the i-butyl group, the n- and i-amyl group and the 2-ethylhexyl group are very particularly preferred.
  • metal dialkyldithiocarbamates which can be used according to the invention with particular advantage are the following: copper dialkyldithiocarbamates and copper bisdialkyldithiocarbamates; Silver dialkyldithiocarbamates; Zinc and cadmium bisdialkyldithiocarbamates; Boron trisdialkyldithiocarbamate; Titanium, zirconium, tin and lead tetrakisdialkyldithiocarbamates as well as tin and lead bisdialkyldithiocarbamates; Antimony, vanadium and tantalum tris dialkyldithiocarbamates, tetrakis and pentakis dialkyldithiocarbamates and the dialkyldithiocarbamates in which these metals are present in mixed oxidation states; Chromium, chromium tris, chromium tetrakis and chromium hexakisdialkyldithi
  • Particularly preferred among these compounds are the boron trisdialkyldithiocarbamates, the nickeltrisdialkyldithiocarbamates and the molybdenum tetrakis and molybdenum oxytetrakisdialkyldithiocarbamates.
  • Metal dialkyldithiophosphates which can be used with particular advantage according to the invention are the dialkyldithiophosphates of the same metals in the same oxidation states as those above for the metal dialkyldithiocarbamates have been enumerated.
  • Zinc bisdialkyldithiophosphates, nickel bis and tris dialkyl dithiophosphates, titanium and vanadium tetrakis dialkyl dithiophosphates, molybdenum and tungsten tetrakis dialkyl dithiophosphates and molybdenum and tungsten oxytetrakis dialkyl dithiophosphates are very particularly advantageous.
  • metal dialkyldithiophosphates used in accordance with the invention are zinc bisdi-2-ethylhexyldithiophosphate, nickel bis- and trisdi-2-ethylhexyldithiophosphate, titanium and vanadium tetrakisdi-2-ethylhexyldithiophosphate as well as molybdenum and tungsten tetrakis and molybdenum oxyethyldithiophosphate.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Claims (9)

  1. Un lubrifiant ou concentré de lubrifiant à base d'une huile minérale et/ou synthétique contenant au moins un composé comportant au moins un atome de carbone quaternaire et au moins une liaison éthérique dans la molécule et autres additives usuels,
    characterise en ce qu'il contient
    a) au moins un alcool tetravalent à octavalent comportant au moins un atome de carbone quaternaire et au moins une liaison éthérique dans la molécule, ayant une densité d₂₀ d'au moins 0,900 et une enthalpie ΔH d'au moins 350 kcal/kg, choisi parmi le groupe des mono-, di- et tri-pentaerythritoles, dont les groupes hydroxyles alcooliques sont éthérifiés ou ethoxyéthérifiés par un groupe alkyle, aralkyle ou aryle ramifié ou non-ramifié et comportant de 6 a 18 atomes de carbone,
    b) une composante additionelle comportant au moins un groupe hydroxyle libre dans la molécule,
    c) au moins un dialkyldithiocarbamate de métal ayant la formule générale
    Figure imgb0010
     dans laquelle
    Me   représente un métal choisi parmi le groupe de cuivre, argent, zinc, cadmium, bore, titane, zirconium, étain, plomb, vanadium, tantale, antimoine, chrome, molybdène, tungstène, manganèse, cobalt et nickel et
    Alkyl représente un groupe alkyle comportant de 4 à 8 atomes de carbone,
    d) au moins un dialkylaryl-, monoalkyldiaryl-, trialkyl- ou triarylphosphite, dont le groupe alkyle est non-ramifié, ramifié ou cyclique et comporte de 8 à 12 atomes de carbone et dont le groupe aryle est un groupe phenyle substitué en o- ou p-position par alkyle ayant de 1 à 6 atomes de carbone,
    e) un thiazole et
    f) comme autres additives usuels des agents antioxidants, des desactivateurs de métal, des détergents, des agents dispersants, des agents antimousses et/ou des agents améliorants la viscosité, connus en soi.
  2. Le lubrifiant ou concentré de lubrifiant selon la revendication 1, characterisé en ce qu'il contient comme une composante additionelle
    (g) au moins un dialkyldithiophosphate de métal ayant la formule generale
    Figure imgb0011
     dans laquelle
    Me   représente un métal choisi parmi le groupe de cuivre, argent, zinc, cadmium, bore, titane, zirconium, étain, plomb, vanadium, tantale, antimoine, chrome, molybdène, tungstène, manganèse, cobalt et nickel et
    Alkyl représente un groupe alkyle comportant de 4 à 8 atomes de carbone.
  3. Le lubrifiant ou concentré de lubrifiant selon la revendication 1 ou 2, characterisé en ce qu'il contient au moins un dialkyldithiocarbamate de bore, nickel, cobalt et molybdène et/ou au moins un dialkyldithiophosphate de zinc, nickel, molybdène, tungstène, titane, vanadium et manganèse.
  4. Le lubrifiant ou concentre de lubrifiant selon la revendication 3, characterisé en ce qu'il contient le diisobutyl-dithiocarbamate de bore et/ou le tris-di-2-ethylhexyldithiocarbamate de bore en combinaison avec le tris-diisobutyl-dithiocarbamate de nickel, le tris-diamyl-dithiocarbamate de nickel et/ou le tris-di-2-ethylhexyl-dithiocarbamate de nickel ainsi le bis-di-2-ethylhexyl-dithiophosphate de zinc, le tris-di-2-ethylhexyl-dithiophosphate de nickel, le tetrakis-di-2-ethylhexyl- dithiophosphate de titane, le tetrakis-di-2-ethylhexyl-dithiophosphate de vanadium, le tetrakis- ou oxytetrakis-di-2-ethylhexyl-dithiophosphate de molybdène, le tetrakis- et/ou oxytetrakis-di-2-ethylhexyl-dithiophosphate de tungstène.
  5. Le lubrifiant ou concentré de lubrifiant selon l'une des revendications 1 à 3, characterisé en ce qu'il contient la composante (a) en une quantité de 0,1 à 40 % en poids, préférablement de 0,1 à 20 % en poids, en particulier de 1 à 12 % en poids, spécialement de 2 à 6 % en poids, par rapport au poids de l'huile minérale et/ou synthétique.
  6. Le lubrifiant ou concentré de lubrifiant selon l'une des revendications 1 à 5, characterisé en ce qu'il contient comme huile de base une huile de navette, une huile naturelle et/ou une huile synthétique ayant une viscosité de 1,0 à 2.10⁶ mPa.s à 20°C.
  7. Le lubrifiant ou concentré de lubrifiant selon la revendications 6, characterisé en ce qu'il contient comme huile naturelle une huile minérale ayant une viscosité de 1,0 mPa.s à 20°C à 540 mPa.s à 50°C et/ou comme huile synthétique un ester d'un acide aromatique ou aliphatique, en particulier un ester d'un acide poly-α-olefin-dicarboxylique, spécialement le butylester, ayant un poids moleculaire de 1000 à 3000, préférablement le diisodecylester de l'acide phtalique, le didecylester de l'acide trimethyladipinique et le dioctylester de l'acide sébacique, un polyisobutylène ayant un poids moléculaire de 1000 à 100 000 et une viscosité de 200 à 43 000 mPa.s à 100°C, un polymethacrylate ayant une viscosité de 1000 mPa.s a 100°C, un polyglycol non-soluble dans l'eau ayant une viscosité de 5 à 60 mPa.s à 100°C, une huile isoparaffinique et/ou un alkylbenzène ayant un point d'inflammation de plus de 50°C et une viscosité de 1,0 mPa.s à 20°C à 2 000 000 mPa.s à 20°C.
  8. Le lubrifiant ou concentré de lubrifiant selon l'une des revendications 1 à 7, characterisé en ce qu'il contient le(les) composé(s) comportant du soufre en une quantité de 0,5 à 10 % en poids, préférablement de 1 à 3 % en poids.
  9. Le lubrifiant ou concentré de lubrifiant selon l'une des revendications 1 à 8, characterisé en ce qu'il contient le(les) composé(s) comportant du phosphore en une quantité de 0,1 à 5 % en poids, préférablement de 0,5 à 2 % en poids.
EP88105726A 1987-04-10 1988-04-11 Lubrifiant ou concentré de lubrifiant Expired - Lifetime EP0286140B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873712134 DE3712134A1 (de) 1987-04-10 1987-04-10 Schmiermittel bzw. schmiermittelkonzentrat
DE3712134 1987-04-10

Publications (2)

Publication Number Publication Date
EP0286140A1 EP0286140A1 (fr) 1988-10-12
EP0286140B1 true EP0286140B1 (fr) 1994-09-07

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Country Link
EP (1) EP0286140B1 (fr)
JP (1) JP3211959B2 (fr)
AT (1) ATE111150T1 (fr)
CA (1) CA1339121C (fr)
DE (2) DE3712134A1 (fr)
ES (1) ES2063742T3 (fr)
WO (1) WO1988008022A1 (fr)

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
JPH06200270A (ja) * 1992-12-29 1994-07-19 Tonen Corp 終減速機用潤滑油組成物
WO1995019411A1 (fr) * 1994-01-13 1995-07-20 Mobil Oil Corporation Additifs pour lubrifiants
US5500107A (en) * 1994-03-15 1996-03-19 Betz Laboratories, Inc. High temperature corrosion inhibitor
TW340870B (en) * 1995-04-07 1998-09-21 Nippon Nogen Co Ltd Lubricating oil additive, lubricating oil and working fluid for refrigerators
CA2223256A1 (fr) * 1995-08-30 1997-03-06 Hirotaka Tomizawa Composition d'huile lubrifiante
WO1997015644A1 (fr) * 1995-10-23 1997-05-01 Nsk Ltd. Composition lubrifiante
GB9813071D0 (en) 1998-06-17 1998-08-19 Exxon Chemical Patents Inc Lubricant compositions
EP3476922B1 (fr) 2016-06-23 2021-08-25 JXTG Nippon Oil & Energy Corporation Composition de graisse pour joints homocinétiques, et joint homocinétique dans lequel ladite composition de graisse est scellée

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1543830A (fr) * 1966-11-10 1968-10-25 Mobil Oil Corp Compositions lubrifiantes contenant des additifs anti-corrosion perfectionnés
US3843542A (en) * 1972-07-31 1974-10-22 Chevron Res Hydraulic oil
FR2467186A1 (fr) * 1979-10-15 1981-04-17 Elf France Alkylethers de polyols, leur preparation et leurs emplois
AT381719B (de) * 1979-10-15 1986-11-25 Elf France Schmiermittel oder schmiermittelzusaetze
GB2065148A (en) * 1979-12-14 1981-06-24 Cooper & Co Ltd Edwin Lubricating composition
JPS5861189A (ja) * 1981-10-07 1983-04-12 Hitachi Ltd 塑性加工用潤滑剤組成物
JPS5975995A (ja) * 1982-10-25 1984-04-28 Showa Shell Sekiyu Kk 耐摩耗性、極圧性及び摩擦特性にすぐれた潤滑組成物
FR2540104B1 (fr) * 1983-02-01 1987-07-17 Elf France Synthese des ethers de polyols

Also Published As

Publication number Publication date
JPH01503545A (ja) 1989-11-30
DE3712134C2 (fr) 1993-07-15
CA1339121C (fr) 1997-07-29
DE3851356D1 (de) 1994-10-13
WO1988008022A1 (fr) 1988-10-20
ES2063742T3 (es) 1995-01-16
JP3211959B2 (ja) 2001-09-25
ATE111150T1 (de) 1994-09-15
EP0286140A1 (fr) 1988-10-12
DE3712134A1 (de) 1988-10-27

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