EP3592833B1 - Composition lubrifiante pour engrenage - Google Patents

Composition lubrifiante pour engrenage Download PDF

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Publication number
EP3592833B1
EP3592833B1 EP18715492.7A EP18715492A EP3592833B1 EP 3592833 B1 EP3592833 B1 EP 3592833B1 EP 18715492 A EP18715492 A EP 18715492A EP 3592833 B1 EP3592833 B1 EP 3592833B1
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EP
European Patent Office
Prior art keywords
additives
variation
wear
gears
composition
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EP18715492.7A
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German (de)
English (en)
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EP3592833A1 (fr
Inventor
Bénédicte Amblard
Florence Bredon
Frédéric ESPINOUX
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TotalEnergies Onetech SAS
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TotalEnergies Onetech SAS
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • 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
    • C10M105/38—Esters of polyhydroxy 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
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/2805—Esters 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/043—Ammonium or amine salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/047—Thioderivatives not containing metallic elements
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/36—Seal compatibility, e.g. with rubber
    • 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
    • C10N2030/64—Environmental friendly compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives

Definitions

  • the present invention relates to lubricating compositions for gears.
  • Said compositions according to the invention are biodegradable, do not exhibit bioaccumulations in organisms and do not exhibit toxicity for the environment, more particularly the aquatic environment.
  • Ecolabel has been used to identify environmentally friendly products in the field of lubricants.
  • the components of these products may come from the LuSC list (Lubricant Substance Classification) and meet the strict requirements of biodegradability, bioaccumulation and aquatic toxicity.
  • Ecolabel lubricants are considered lubricants that meet the environmental specifications of EAL lubricants.
  • Ecolabel or EAL lubricants are used in equipment that may have interfaces and/or contact with a user, with air and/or with water. This applies in particular to the lubricating compositions of gears that may be in direct contact with water and/or air and/or with humans and/or any other contact requiring biodegradable, non-toxic products.
  • lubricating compositions for gears for industrial or marine use must meet very specific specifications in terms of performance, particularly in terms of tribological performance and seal compatibility. There is therefore an interest in providing biodegradable lubricating compositions, which do not bioaccumulate in organisms, which do not present any toxicity for the environment, more particularly the aquatic environment and which meet all the tests specific to lubricating compositions for gears.
  • An objective of the present invention is to provide a lubricating composition, in particular for gears, which is biodegradable, does not exhibit bioaccumulations in organisms and does not exhibit toxicity for the environment, more particularly the aquatic environment.
  • Another objective of the present invention is to provide such a composition which meets the specific properties relating to gear compositions, in particular in terms of tribological properties and joint compatibility.
  • EP 0 612 831 A1 relates to flame retardant hydraulic oils, possibly usable for lubricating gears, based on synthetic esters.
  • lubricating composition means a lubricating composition meeting the criteria of Regulation EEC No. 66/2010 of the European Parliament and of the Council of 25 November 2009. This regulation makes it possible to establish the European Union Ecolabel.
  • the certification standard for the European Union Ecolabel for Lubricants (identification number EC 511 revision 4 of 04/07/2016) details the criteria for Lubricants.
  • the substances and mixtures subject to a limitation or exclusion are defined in this standard.
  • the additional requirements for aquatic toxicity are specified (OECD 201 methods for algae, OECD 202 for daphnia, OECD 203 for fish).
  • the criteria for biodegradability and bioaccumulation potential are defined in this same standard.
  • Trimethylolpropane triester is trimethylolpropane isostearate.
  • the additives that can be used in the compositions according to the invention are additives from the LuSC-list or additives that make it possible to obtain a biodegradable formula that meets the Ecolabel standard or the American EAL specifications.
  • Anti-wear additives and extreme pressure additives protect surfaces from friction by forming a protective film adsorbed on these surfaces.
  • anti-wear additives Preferably, some additives are both anti-wear and extreme pressure additives.
  • the anti-wear and extreme pressure additives are chosen from ashless phosphorus or phosphorus-sulfur additives such as, for example, phosphates, phosphorothionates, phosphonates, dithiophosphates and thiophosphates such as dialkyl dithiophosphates.
  • anti-wear additives we can also mention triaryl thiophosphate, carbamates and thiocarbamates.
  • some additives are both anti-wear, extreme pressure and anti-corrosion additives.
  • the lubricating composition according to the invention can comprise at least one anti-corrosion additive such as an N-acyl sarcosine compound.
  • the lubricating composition according to the invention may comprise at least one metal deactivating additive such as a tolutriazole or di Mercapto Thiadiazole derivative.
  • the lubricating composition according to the invention can comprise at least one anti-foam additive such as a silicone compound or a polyacrylate compound.
  • the lubricating composition according to the invention can comprise at least one antioxidant additive.
  • the antioxidant additive generally makes it possible to delay the degradation of the lubricating composition in service.
  • Antioxidant additives act in particular as radical inhibitors or hydroperoxide destroyers.
  • antioxidant additives commonly used we can cite phenolic type antioxidant additives and amine type antioxidant additives.
  • the phenolic antioxidant additives may in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge.
  • the sterically hindered phenols are chosen from compounds comprising a phenol group of which at least one vicinal carbon of the carbon carrying the alcohol function is substituted by at least one C 1 -C 10 alkyl group, preferably a C 1 -C 6 alkyl group, preferably a C 4 alkyl group, preferably by the tert-butyl group.
  • the amine antioxidant additives may be chosen from diphenylamines, diphenylamines substituted by at least one C1 - C12 alkyl group, N,N'-dialkyl-aryl-diamines, octylphenyl naphthylamine and mixtures thereof.
  • amine compounds are aromatic amines, for example aromatic amines of formula NR 4 R 5 R 6 in which R 4 represents an aliphatic group or an aromatic group, optionally substituted, R 5 represents an aromatic group, optionally substituted, R 6 represents a hydrogen atom, an alkyl group, an aryl group.
  • Amino antioxidant additives can be used in combination with phenolic antioxidant additives.
  • the amine phosphate is chosen from alkyl amine phosphates.
  • the phenolic antioxidant is preferably selected from sterically hindered phenols selected from compounds comprising a phenol group in which at least one vicinal carbon of the carbon bearing the alcohol function is substituted by at least one C 1 -C 10 alkyl group, preferably a C 1 -C 6 alkyl group, preferably a C 4 alkyl group, preferably by the tert-butyl group.
  • the phenol is selected from phenolic compounds in which the two vicinal carbons of the carbon bearing the alcohol function are substituted by at least one C 1 -C 10 alkyl group, preferably a C 1 -C 6 alkyl group, preferably a C 4 alkyl group, preferably by the tert-butyl group, and in which another carbon is substituted by an alkyl ester group.
  • the composition according to the invention is biodegradable, does not exhibit bioaccumulations in organisms and does not exhibit no toxicity to the environment, particularly the aquatic environment, and meets the European Ecolabel and the American EAL specifications. Furthermore, the composition according to the invention meets the various characteristic tests of gear lubricating compositions.
  • the present invention also relates to the use of the lubricating composition according to the invention for the lubrication of gears, in particular in the marine field and in equipment having gears which may be in contact with the environment (water, air, etc.) or humans.
  • composition according to the invention is also useful for the lubrication of equipment comprising gears, in particular for the lubrication of the stern tube.
  • the stern tube is the system allowing the propeller shaft to pass through the hull while maintaining maximum watertightness.
  • the present invention also relates to a method of lubricating gears using the lubricating composition according to the invention, that is to say comprising the lubrication of the parts in contact with a lubricating composition according to the invention.
  • the present invention also relates to a method for lubricating equipment comprising gears, in particular the stern tube, comprising the use of a lubricating composition according to the invention, i.e. the lubrication of the internal walls of the equipment comprising gears, in particular the internal walls of the stern tube, with a lubricating composition according to the invention.
  • Example 1 Example of Composition according to the invention
  • Table 1 describes an example of a composition according to the invention.
  • Table 1 Components Composition 1 content in % m/m Trimethylolpropane triisostearate 98.52 Phenolic antioxidant 0.5 Anti-wear amine phosphate 0.5 Dialkyl dithiophoshate anti-wear 0.09 Anti-corrosion 0.1 Metal deactivator 0.09 Silicone antifoam mother solution 0.2
  • composition according to the invention passes the tests implemented to measure wear and seizure in gears, that is to say that the composition according to the invention implemented in gears makes it possible to have a minimum of wear and seizure of the elements constituting the gears.

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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)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Description

  • La présente invention concerne des compositions lubrifiantes pour engrenage. Lesdites compositions selon l'invention sont biodégradables, ne présentent pas de bioaccumulations dans les organismes et ne présentent pas de toxicité pour l'environnement, plus particulièrement l'environnement aquatique.
  • Depuis décembre 2013, la règlementation américaine a été modifiée et impose notamment à tous les navires naviguant dans les eaux américaines d'utiliser des produits EAL (Environmental Acceptable Lubricant soit lubrifiant respectueux de l'environnement) et depuis 1992 en Europe, un label Ecolabel permet d'identifier dans le domaine des lubrifiants, les produits respectueux de l'environnement. Les composants de ces produits peuvent être issus de la LuSC liste (Lubricant Substance Classification) et répondent notamment aux exigences strictes de biodégradabilité, de bioaccumulation et de toxicité aquatique. Les lubrifiants Ecolabel sont considérés comme des lubrifiants remplissant les spécifications environnementales des lubrifiants EAL.
  • Ces lubrifiants Ecolabel ou EAL sont mis en oeuvre dans des équipements pouvant présenter des interfaces et/ou contacts avec un utilisateur, avec de l'air et/ou avec l'eau. Cela vaut en particulier pour les compositions lubrifiantes des engrenages qui peuvent être directement en contact avec l'eau et/ou l'air et/ou avec l'Homme et/ou tout autre contact nécessitant des produits biodégradables, non toxiques.
  • Par ailleurs, les compositions lubrifiantes pour engrenage à usage industriel ou marin doivent répondre à un cahier des charges très spécifique en matière de performances, notamment en terme de performances tribologiques, et de compatibilité joints. Il existe donc un intérêt à fournir des compositions lubrifiantes biodégradables, ne présentant pas de bioaccumulations dans les organismes, ne présentant pas de toxicité pour l'environnement, plus particulièrement l'environnement aquatique et répondant à tous les tests spécifiques aux compositions lubrifiantes pour engrenage.
  • Un objectif de la présente invention est de fournir une composition lubrifiante, notamment pour engrenage, qui soit biodégradable, ne présentant pas de bioaccumulations dans les organismes et ne présentant pas de toxicité pour l'environnement, plus particulièrement l'environnement aquatique.
  • Un autre objectif de la présente invention est de fournir une telle composition qui réponde aux propriétés spécifiques relatives aux compositions pour engrenage, notamment en termes de propriétés tribologiques et de compatibilité joints.
  • D'autres objectifs encore apparaîtront à la lecture de la description de l'invention qui suit.
  • EP 0 612 831 A1 porte sur des huiles hydrauliques ignifugeantes, éventuellement utilisables pour lubrifier des engrenages, à base d'esters synthétiques.
  • La présente demande concerne une composition lubrifiante pour engrenage comprenant :
    • 97 à 99,9% en poids d'un triester de triméthylolpropane qui est le tri-isostéarate de triméthylolpropane ; et
    • 0,1 à 3 % en poids d'au moins un additif choisi parmi les additifs anti-usure, les additifs extrême-pression, les antioxydants, les additifs anticorrosion, les additifs désactivateur de métaux , les anti-mousse, et leurs mélanges.
  • Dans le cadre de la présente invention, on entend par « composition lubrifiante », une composition lubrifiante répondant aux critères du règlement CEE N°66/2010 du parlement européen et du conseil du 25 novembre 2009. Ce règlement permet d'établir le label écologique de l'Union européenne. Le référentiel de certification du label Ecologique de L'union Européenne pour les Lubrifiants (n°d'identification EC 511 révision 4 du 04/07/2016) détaille les critères pour les Lubrifiants. Les substances et mélanges faisant l'objet d'une limitation ou d'une exclusion sont définis dans ce référentiel. Les exigences supplémentaires en matière de toxicité aquatique sont précisées (méthodes OCDE 201 pour les algues, OCDE 202 pour les daphnies, OCDE 203 pour les poissons). Les critères de biodégradabilité et de potentiel de bioaccumulation sont définis dans ce même référentiel.
  • Le triester de triméthylolpropane est l'iso-stéarate de triméthylolpropane.
  • Les additifs utilisables dans les compositions selon l'invention sont des additifs de la LuSC-list ou des additifs permettant d'obtenir une formule biodégradable répondant au référentiel Ecolabel ou aux spécifications américaines EAL.
  • Les additifs anti-usure et les additifs extrême pression protègent les surfaces du frottement par formation d'un film protecteur adsorbé sur ces surfaces. Il existe une grande variété d'additifs anti-usure. De manière préférée, certains additifs sont à la fois des additifs anti-usure et extrême pression.
  • De manière préférée pour la composition lubrifiante selon l'invention, les additifs anti-usure et extrême pression sont choisis parmi des additifs phosphorés ou phos-soufrés sans cendre comme par exemple les phosphates, les phosphorothionate, les phosphonates, les dithiophosphates et les thio phosphates tels que les dialkyl dithiophosphates.
  • Comme additif anti-usure on peut également citer, les triaryl thiophosphate, les carbamates et les thiocarbamates.
  • De manière également préférée, certains additifs sont à la fois des additifs anti-usure, extrême pression et anti-corrosion. Parmi ces additifs, on peut citer les phosphates d'amines qui peuvent être employés dans la composition lubrifiante selon l'invention.
  • De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre au moins un additif anti-corrosion tel qu'un composé N-acyl sarcosine.
  • De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre au moins un additif désactivateur de métaux tel qu'un dérivé de tolutriazole ou de di Mercapto Thiadiazole
  • De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre au moins un additif anti-mousse tel qu'un composé siliconné ou un composé polyacrylate.
  • De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre au moins un additif antioxydant.
  • L'additif antioxydant permet généralement de retarder la dégradation de la composition lubrifiante en service. Les additifs antioxydants agissent notamment comme inhibiteurs radicalaires ou destructeurs d'hydro peroxydes. Parmi les additifs antioxydants couramment employés, on peut citer les additifs antioxydants de type phénolique, les additifs antioxydants de type aminé.
  • Les additifs antioxydants phénoliques peuvent notamment être choisis parmi les phénols stériquement encombrés, les esters de phénol stériquement encombrés et les phénols stériquement encombrés comprenant un pont thioéther.
  • De préférence selon l'invention, les phénols stériquement encombrés sont choisis parmi les composés comprenant un groupement phénol dont au moins un carbone vicinal du carbone portant la fonction alcool est substitué par au moins un groupement alkyle en C1-C10, de préférence un groupement alkyle en C1-C6, de préférence un groupement alkyle en C4, de préférence par le groupement ter-butyle.
  • Les additifs antioxydants aminés peuvent être choisis parmi les diphénylamines, les diphénylamines substituées par au moins un groupement alkyle en C1-C12, les N,N'-dialkyle-aryle-diamines, les octylphenyl naphtylamine et leurs mélanges.
  • Des exemples de composés aminés sont les amines aromatiques, par exemple les amines aromatiques de formule NR4R5R6 dans laquelle R4 représente un groupement aliphatique ou un groupement aromatique, éventuellement substitué, R5 représente un groupement aromatique, éventuellement substitué, R6 représente un atome d'hydrogène, un groupement alkyle, un groupement aryle.
  • Les additifs antioxydants aminés peuvent être utilisés en combinaison avec les additifs antioxydants phénoliques.
  • De préférence, la composition de l'invention comprend en tant qu'additifs :
    • 0,1 à 1% en poids d'un additif anti-usure de type phosphate d'amine ; et
    • 0,1 à 1% en poids d'un additif antioxydant phénolique.
  • De préférence le phosphate d'amine est choisi parmi les alkyl phosphate d'amine.
  • De préférence, l'antioxydant phénolique est de préférence choisi parmi les phénols stériquement encombrés choisis, parmi les composés comprenant un groupement phénol dont au moins un carbone vicinal du carbone portant la fonction alcool est substitué par au moins un groupement alkyle en C1- C10, de préférence un groupement alkyle en C1-C6, de préférence un groupement alkyle en C4, de préférence par le groupement ter-butyle. De préférence, le phénol est choisi parmi les composés phénoliques dont les deux carbones vicinaux du carbone portant la fonction alcool sont substitués par au moins un groupement alkyle en C1- C10, de préférence un groupement alkyle en C1-C6, de préférence un groupement alkyle en C4, de préférence par le groupement ter-butyle, et dont un autre carbone est substitué par une groupe alkyl-ester.
  • De manière particulièrement avantageuse, la composition selon l'invention est biodégradable, ne présente pas de bioaccumulations dans les organismes et ne présente pas de toxicité pour l'environnement, plus particulièrement l'environnement aquatique et répond au label européen Ecolabel et aux spécifications américaines EAL. Par ailleurs, la composition selon l'invention répond aux différents tests caractéristiques des compositions lubrifiantes pour engrenage.
  • La présente invention concerne également l'utilisation de la composition lubrifiante selon l'invention pour la lubrification d'engrenage, notamment dans le domaine de la marine et dans les équipements ayant des engrenages pouvant être au contact avec l'environnement (eau, air, etc,) ou l'Homme.
  • La composition selon l'invention est également utile pour la lubrification des équipements comprenant des engrenages, notamment pour la lubrification du tube d'étambot.
  • Le tube d'étambot est le système permettant de faire traverser la coque à l'arbre d'hélice tout en conservant un maximum d'étanchéité.
  • La présente invention concerne également une méthode de lubrification des engrenages mettant en oeuvre la composition lubrifiante selon l'invention, c'est-à-dire comprenant la lubrification des pièces en contact avec une composition lubrifiante selon l'invention.
  • La présente invention concerne également une méthode de lubrification des équipements comprenant des engrenages, notamment du tube d'étambot, comprenant la mise en oeuvre d'une composition lubrifiante selon l'invention, c'est-à-dire la lubrification des parois internes des équipements comprenant des engrenages, notamment les parois internes du tube d'étambot, avec une composition lubrifiante selon l'invention.
  • La présente invention va maintenant être décrite à l'aide des exemples non-limitatifs qui suivent.
    • Exemple 1 : Exemple de Composition selon l'invention
  • Le tableau 1 décrit un exemple de composition selon l'invention Tableau 1
    Composants Composition 1 teneur en % m/m
    Tri iso-stéarate de triméthylolpropane 98,52
    Anti-oxydant phénolique 0,5
    Anti-usure phosphate d'amine 0,5
    Anti-usure de type dialkyl dithiophoshate 0,09
    Anti-corrosion 0,1
    Désactivateur de métaux 0,09
    Antimousse siliconé solution mère 0,2
    • Exemple 2 : Essais tribologiques
    • Les essais tribologiques suivants ont été réalisés :
    • FZG A/8.3/90°C selon la norme ISO 14635-1 (équivalent à CEC L-07-A-95)
    • FZGA/8.3/60°C selon la norme ISO 14635-1 modifiée
    • FZG A10 /16.6R/30 selon la norme ISO 14635-2 (équivalent à CEC L-84)
    • FZG A10/16.6R/90 selon la norme ISO 14635-2 (équivalent à CEC L-84).
    • Micropitting C-GF/8.3/90 selon FVA 54/I-IV
    • FAG-FE8 D7,5/80-80 selon DIN51819-3
    • FAG-FE8 D7,5/100-80 selon DIN51819-3
  • Les résultats sont indiqués dans le tableau 2 ci-dessous. Un + signifie que la composition passe le test classique mis en oeuvre pour déterminer l'usure ou le grippage des engrenages. Un - signifie que la composition ne passe pas ce test. Tableau 2
    Paramètre mesuré Performances à atteindre Composition 1
    FZG A/8.3/90°C Grippage du pallier dégats >12 >14
    FZG A/8.3/60°C Grippage du pallier dégats +
    FZG A10 /16.6R/30 Grippage du pallier dégats +
    FZG A10/16.6R/90 Grippage du pallier dégats report 9
    Micropitting C-GF/8.3/90 selon FVA 54/I-IV Usure des engrenages Minimum 10 Supérieur à 10
    FAG-FE8 D7,5/80-80 Usure des éléments roulants Maximum 20 mg 4 mg
    FAG-FE8 D7,5/100-80 Usure des éléments roulants +
    FZG test d'usure à faible vitesse à 40-60°C, Méthode DGMK 377-01 (C/0,05/90 :120/12) Usure totale des engrenages +
  • Ces tests indiquent que la composition selon l'invention passe les tests mis en oeuvre pour mesurer l'usure et le grippage dans les engrenages, c'est à-dire que la composition selon l'invention mis en oeuvre dans des engrenages permet d'avoir un minimum d'usure et de grippage des éléments constituants les engrenages.
    • Exemple 3 : Compatibilité joint
  • Des essais joints ont été réalisés de deux manières suivantes:
    • FKM-2 - 168h/130°C et 168h/175°C,
    • Essais Freudenberg selon la méthode décrite dans le document FB 73 11 008 « Static and dynamic oil compatibility tests for Freudenberg radial shafts seals to release the usage in Flender-gear units applications (Table T 7300) », Ed. 2013.
    Tableau 3
    Essais joints - FKM-2 - 168h/130°C Limites acceptables en % Composition 1
    Variation volume Inférieur à 7 /8 0.3
    Variation dureté report 0.3
    Variation charge rupture Inférieur à 25 -0.7
    Variation élongation rupture Inférieur à 25 5.4
    Essais joints - FKM-2 - 168h/175°C Limites acceptables en % Composition 1
    Variation volume Inférieur à 7 /8 -1.2
    Variation dureté report 1.05
    Variation charge rupture Inférieur à 25 -7.8
    Variation élongation rupture Inférieur à 25 -2.5
    Nd : non déterminé
    Essais Freudenberg Limites acceptables en % Composition 1
    Elastomère FKM 585
    130°C/1000h
    Variation volume (%) -2 / +5 2,1
    Variation dureté -5 / +5 -1,2
    Variation charge rupture (%) -50 / +20 12,9
    Variation élongation rupture (%) -60 / +20 -13,9
    Elastomère NBR 902
    95°C/1000h
    Variation volume (%) -2 / +5 1,8
    Variation dureté -5 / +5 -3,3
    Variation charge rupture (%) -50 / +20 -11,1
    Variation élongation rupture (%) -60 / +20 -21,1
    Elastomère FKM 260466
    130°C/1000h
    Variation volume (%) -2 / +5 0,9
    Variation dureté -5 / +5 -1
    Variation charge rupture (%) -50 / +20 9,5
    Variation élongation rupture (%) -60 / +20 5
  • Ces résultats montrent que la composition lubrifiante selon l'invention est compatible avec les différents joints étudiés et ne détériore pas les propriétés des joints.

Claims (5)

  1. Utilisation d'une composition comprenant :
    - 97 à 99,9% en poids d'un triester de triméthylolpropane qui est le tri-isostéarate de triméthylolpropane ; et
    - 0,1 à 3 % en poids d'au moins un additif choisi parmi les additifs anti-usure, les additifs extrême-pression, les antioxydants, les additifs anticorrosion, les additifs désactivateur métallique, les anti-mousse, et leurs mélanges,
    pour la lubrification d'engrenages ou d'équipement comprenant des engrenages, notamment tube d'étambot.
  2. Utilisation selon la revendication 1, dans laquelle la composition comprend :
    - 0,1 à 1% en poids d'un additif anti-usure phosphate d'amine ; et
    - 0,1 à 1% en poids d'un additif antioxydant phénolique.
  3. Utilisation selon la revendication 2 dans laquelle le phosphate d'amine est choisi parmi les alkyl phosphate d'amine.
  4. Utilisation selon l'une quelconque des revendications 1 à 3, dans laquelle l'équipement comprenant des engrenages est le tube d'étambot.
  5. Méthode de lubrification d'engrenage ou d'équipement comprenant des engrenages, notamment tube d'étambot, comprenant la mise en oeuvre de la composition telle que décrite selon l'une des revendications 1 à 3.
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WO2025051849A1 (fr) * 2023-09-05 2025-03-13 Totalenergies Onetech Compositions lubrifiantes pour engrenages

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FR3063727A1 (fr) 2018-09-14
JP2020510116A (ja) 2020-04-02
US20200048572A1 (en) 2020-02-13
WO2018162761A1 (fr) 2018-09-13
KR20190119640A (ko) 2019-10-22
SG11201908343QA (en) 2019-10-30
KR102680911B1 (ko) 2024-07-04
US11279896B2 (en) 2022-03-22
FR3063727B1 (fr) 2019-04-19
CN110382671A (zh) 2019-10-25

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