EP3430110B1 - Schmiermittelzusammensetzung auf polyalkylenglykolbasis - Google Patents

Schmiermittelzusammensetzung auf polyalkylenglykolbasis Download PDF

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Publication number
EP3430110B1
EP3430110B1 EP17710731.5A EP17710731A EP3430110B1 EP 3430110 B1 EP3430110 B1 EP 3430110B1 EP 17710731 A EP17710731 A EP 17710731A EP 3430110 B1 EP3430110 B1 EP 3430110B1
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EP
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Prior art keywords
composition according
alkyl group
pag
lubricating composition
formula
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EP17710731.5A
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English (en)
French (fr)
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EP3430110A1 (de
Inventor
Laura BROUTIN
Nicolas Obrecht
Nadjet KHELIDJ-SUEDMEYER
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TotalEnergies Onetech SAS
Dow Global Technologies LLC
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TotalEnergies Onetech SAS
Dow Global Technologies LLC
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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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • 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
    • 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
    • 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
    • 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
    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C10M2207/289—Partial esters containing free hydroxy 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • C10M2209/1045—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
    • C10M2209/1065—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
    • C10M2209/1075—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C10M2209/1085—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified 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
    • 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
    • C10N2010/04—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
    • C10N2010/12—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
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/04—Detergent property or dispersant property
    • 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
    • C10N2030/54—Fuel economy
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines

Definitions

  • the present application relates to the field of lubricating compositions, in particular lubricating compositions for vehicle engines, in particular for motor vehicle engines.
  • the present application relates to lubricating compositions based on polyalkylated glycols (PAG or polyalkylene glycols) for the lubrication of vehicle engines, in particular motor vehicles.
  • PAG polyalkylated glycols
  • the document WO 2016/016362 relates to a lubricating composition comprising PAGs and the use of this lubricating composition for reducing the fuel consumption of a vehicle.
  • the document US 6,004,910 relates to a lubricating composition comprising zinc dithiophosphates having secondary alkyl groups. Additives based on zinc dithiophosphates having secondary alkyl groups improve the anti-wear performance of the lubricating composition.
  • “Fuel-Eco” lubricant compositions based on PAG have been described in the document WO 2013/164449 , said compositions also having good engine properties.
  • the document JP H06 80981 relates to lubricating compositions comprising, among other things, up to 80% by weight of PAG as well as an anti-wear additive chosen from zinc dithiophosphates comprising primary or secondary alkyl groups.
  • An objective of the present invention is to provide a PAG-based lubricating composition, in particular a PAG-based lubricating composition for motor vehicle engines, having improved anti-wear properties.
  • Another objective of the present invention is to provide a PAG-based lubricating composition, in particular a PAG-based lubricating composition for a motor vehicle engine, having both improved anti-wear properties and satisfactory “Fuel-Eco” properties.
  • Another objective of the present invention is to provide a PAG-based lubricating composition, in particular a PAG-based lubricating composition for a motor vehicle engine, having both improved anti-wear properties and not degrading engine cleanliness.
  • Another objective of the present invention is to provide a PAG-based lubricating composition, in particular a PAG-based lubricating composition for a motor vehicle engine, having improved anti-wear properties, satisfactory “Fuel-Eco” properties and not degrading engine cleanliness.
  • Another objective of the invention is to provide a PAG-based lubricating composition, in particular a PAG-based lubricating composition for a motor vehicle engine, having improved anti-wear properties and easy to formulate.
  • secondary linear or branched alkyl comprising from 2 to 7 carbon atoms means an alkyl chosen so as to form a secondary alcohol with the O to which it is attached.
  • the lubricating composition of the present invention is a lubricating composition for an engine, preferably for a vehicle, more preferably for a motor vehicle.
  • the PAG of the lubricating composition according to the invention may be a block polymer or a random polymer.
  • the PAG according to the invention comprises alkyl groups whose hydrocarbon chain length can vary.
  • the length of the hydrocarbon chains is defined by an average value of the number of carbon atoms.
  • R12 represents a group selected from a linear C8 -alkyl group; a branched C8 -alkyl group; a linear C9 -alkyl group; a branched C9 -alkyl group; a linear C10 -alkyl group; a branched C10 -alkyl group; a linear C11 -alkyl group; a branched C11 -alkyl group; a linear C12 -alkyl group; a branched C12 -alkyl group; a linear C13 -alkyl group; a branched C13 -alkyl group; a linear C14 -alkyl group; a branched C14 -alkyl group; a linear C15 -alkyl group; a branched C15 -alkyl group.
  • the PAG according to the invention comprises at least one butylene oxide unit.
  • the lubricating composition according to the invention comprises from 80 to 99.5% by weight of PAG.
  • the lubricating composition according to the invention comprises an anti-wear additive chosen from the compounds of formula (I) in which R1 and R2, identical or different, independently represent a secondary linear or branched alkyl group comprising from 2 to 7 carbon atoms, preferably from 3 to 6 carbon atoms.
  • the anti-wear additive is chosen from the compounds of formula (I) in which R1 and R2, identical or different, represent a secondary C3-alkyl group or a secondary C6-alkyl group.
  • the groups R1 and R2, identical or different represent a dimethyl butyl group or an isopropyl group.
  • the groups R1 and R2, which are identical, represent a dimethyl butyl group or an isopropyl group.
  • Examples of compounds of formula (I) include the product Lubrizol 1371 ® marketed by the company Lubrizol.
  • the lubricating composition according to the invention comprises from 0.1 to 3%, preferably from 0.1 to 2%, more preferably from 0.1 to 1% by weight of compound of formula (I).
  • the lubricating composition according to the invention may comprise a base oil.
  • the lubricating composition according to the invention may comprise any type of lubricating base oil, mineral, synthetic or natural, animal or vegetable, suitable for its use.
  • the base oils used in the lubricating compositions according to the invention can therefore be oils of mineral or synthetic origin belonging to groups I to V according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) (table A) or their mixtures.
  • the base oil is different from PAG.
  • the mineral base oils which can be used for the lubricating composition according to the invention include any type of bases obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, de-alphatting, solvent dewaxing, hydrotreating, hydrocracking, hydroisomerization and hydrofinishing. Blends of synthetic and mineral oils may also be used.
  • lubricating bases there is generally no limitation on the use of different lubricating bases to produce the lubricating compositions according to the invention, except that they must have properties, in particular viscosity, viscosity index, sulfur content and resistance to oxidation, suitable in particular for use in engines or vehicle transmissions.
  • the base oils of the lubricating compositions according to the invention may also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, as well as from polyalphaolefins.
  • the polyalphaolefins used as base oils are for example obtained from monomers comprising from 4 to 32 carbon atoms, for example from octene or decene, and whose viscosity at 100 °C is between 1.5 and 15 mm 2 .s -1 according to the ASTM D445 standard. Their average molecular mass is generally between 250 and 3,000 according to the ASTM D5296 standard.
  • the base oil can be chosen from group III oils, group IV oils and group V oils.
  • the lubricating composition according to the invention may comprise at least 50% by mass of base oils relative to the total mass of the composition. More advantageously, the lubricating composition according to the invention may comprise at least 60% by mass, or even at least 70% by mass, of base oils relative to the total mass of the composition. More particularly advantageously, the lubricating composition according to the invention may comprise from 50, 60 or 70 to 99.9% by mass, or from 50, 60 or 70 to 90% by mass, of one or more base oils relative to the total mass of the composition.
  • the lubricating composition according to the invention may also comprise at least one additional additive.
  • Many additional additives may be used for the lubricating composition according to the invention.
  • Preferred additional additives for the lubricating composition according to the invention are chosen from detergent additives, anti-wear additives other than the compounds of formula (I), wear-modifying additives friction, extreme pressure additives, dispersants, pour point depressants, antifoaming agents, thickeners and mixtures thereof.
  • the lubricating composition according to the invention comprises at least one organic friction modifier chosen from esters, preferably from polyol monoesters, more preferably from glycerol monoesters. More preferably, the organic friction modifier is chosen from glycerol monoesters obtained by esterification reaction between glycerol and a saturated or unsaturated carboxylic acid comprising at least 10 carbon atoms, preferably from 10 to 20 carbon atoms, more preferably from 15 to 20 carbon atoms, advantageously from 15 to 18 carbon atoms.
  • glycerol monooleate may be mentioned.
  • the lubricating composition according to the invention comprises from 0.1 to 2% by weight, preferably from 0.1 to 1.5% by weight, more preferably from 0.5 to 1.5% by weight of organic friction modifiers.
  • Amine phosphates are also anti-wear additives that can be used in the lubricating composition according to the invention.
  • the phosphorus provided by these additives can act as a poison for automobile catalytic systems because these additives generate ash.
  • These effects can be minimized by partially substituting the amine phosphates with additives that do not provide phosphorus, such as, for example, polysulfides, in particular sulfur-containing olefins.
  • the lubricating composition according to the invention may comprise from 0.01 to 6% by mass, preferably from 0.05 to 4% by mass, more preferably from 0.1 to 2% by mass relative to the total mass of lubricating composition, of additional anti-wear additives.
  • the lubricating composition according to the invention may comprise at least one inorganic friction modifier additive.
  • the inorganic friction modifier additive may be chosen from a compound providing metallic elements and an ash-free compound.
  • the compounds providing metallic elements it is possible to: cite transition metal complexes such as Mo, Sb, Sn, Fe, Cu, Zn whose ligands can be hydrocarbon compounds comprising oxygen, nitrogen, sulfur or phosphorus atoms.
  • the lubricating composition according to the invention may comprise at least one antioxidant additive.
  • the antioxidant additive generally makes it possible to delay the degradation of the lubricating composition in service. This degradation may in particular result in the formation of deposits, in the presence of sludge or in an increase in the viscosity of the lubricating composition.
  • Antioxidant additives act in particular as radical inhibitors or hydroperoxide destroyers.
  • antioxidant additives mention may be made of phenolic antioxidant additives, amine antioxidant additives, and phosphosulfur antioxidant additives. Some of these antioxidant additives, for example phosphosulfur antioxidant additives, may be ash-generating. Phenolic antioxidant additives may be ash-free or in the form of neutral or basic metal salts.
  • Antioxidant additives may in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, diphenylamines substituted by at least one C 1 -C 12 alkyl group, N,N'-dialkyl-aryl-diamines and mixtures thereof.
  • 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.
  • Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives.
  • amine compounds are aromatic amines, for example aromatic amines of the formula NR a R b R c in which R a represents an aliphatic group or an aromatic group, optionally substituted, R b represents an aromatic group, optionally substituted, R c represents a hydrogen atom, an alkyl group, an aryl group or a group of the formula R d S(O) z R e in which R d represents an alkylene group or an alkenylene group, R e represents an alkyl group, an alkenyl group or an aryl group and z represents 0, 1 or 2.
  • Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
  • antioxidant additives are that of copper compounds, for example copper thio- or dithio-phosphates, copper salts of carboxylic acids, dithiocarbamates, sulphonates, phenates, copper acetylacetonates. Copper I and II salts, succinic acid or anhydride salts can also be used.
  • copper compounds for example copper thio- or dithio-phosphates, copper salts of carboxylic acids, dithiocarbamates, sulphonates, phenates, copper acetylacetonates.
  • Copper I and II salts, succinic acid or anhydride salts can also be used.
  • the lubricating composition according to the invention may contain all types of antioxidant additives known to those skilled in the art.
  • the lubricating composition according to the invention comprises from 0.5 to 2% by weight relative to the total mass of the composition, of at least one antioxidant additive.
  • the lubricating composition according to the invention may also comprise at least one detergent additive.
  • Detergent additives generally make it possible to reduce the formation of deposits on the surface of metal parts by dissolving secondary oxidation and combustion products.
  • the detergent additives that can be used in the lubricating composition according to the invention may be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
  • the associated cation may be a metal cation of an alkali or alkaline-earth metal.
  • the detergent additives are preferably chosen from alkali metal or alkaline-earth metal salts of carboxylic acids, sulfonates, salicylates, naphthenates, and phenate salts.
  • the alkali and alkaline-earth metals are preferably calcium, magnesium, sodium or barium. These metal salts generally comprise the metal in a stoichiometric quantity or in excess, therefore in a quantity greater than the stoichiometric quantity.
  • the excess metal providing the overbased character to the detergent additive is then generally in the form of a metal salt insoluble in oil, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate.
  • the lubricating composition according to the invention can comprise from 2 to 4% by weight of detergent additive relative to the total mass of the lubricating composition.
  • the lubricating composition according to the invention may also comprise at least one pour point lowering additive.
  • pour point depressant additives By slowing down the formation of paraffin crystals, pour point depressant additives generally improve the cold behavior of the lubricating composition according to the invention.
  • pour point depressant additives examples include polyalkyl methacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes, alkylated polystyrenes.
  • the lubricating composition according to the invention may also comprise at least one dispersing agent.
  • the dispersing agent may be chosen from Mannich bases, succinimides and their derivatives.
  • the lubricating composition according to the invention may comprise from 0.2 to 10% by mass of dispersing agent relative to the total mass of the lubricating composition.
  • the lubricating composition may also comprise at least one viscosity index improving polymer.
  • viscosity index improving polymers include polymer esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, of styrene, butadiene and isoprene, polymethacrylates (PMA).
  • the lubricating composition according to the invention may comprise from 1 to 15% by mass relative to the total mass of the lubricating composition of polymer improving the viscosity index.
  • the lubricating composition according to the invention is used for the lubrication of an engine, preferably of a vehicle, more preferably of a motor vehicle.
  • the present invention also relates to the use of a lubricating composition according to the invention for lubricating an engine, preferably of a vehicle, more preferably of a motor vehicle.
  • the present invention also relates to the use of a lubricating composition according to the invention for lubricating a vehicle engine, more preferably a motor vehicle engine.
  • the present invention also relates to a method for lubricating a vehicle engine, preferably a motor vehicle engine, comprising at least one step of bringing said engine into contact with the lubricating composition according to the invention.
  • the present invention also relates to the use of a compound of formula (I) for improving the anti-wear properties of a lubricating composition comprising an oil chosen from PAGs.
  • Example 1 Lubricating compositions according to the invention
  • Lubricating compositions according to the invention are prepared in accordance with Table 1 below (the compositions are given by weight (g)).
  • compositions 1 and 2 have improved anti-wear properties compared to the comparative lubricating compositions (comparative compositions 1, 2, 3 and 4).

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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)

Claims (9)

  1. Schmiermittelzusammensetzung, umfassend zu 80 bis 99,5 Gew.-% ein Öl, das aus polyalkylierten Glykolen (PAG oder Polyalkylenglykolen) ausgewählt ist, und ein Anti-Verschleiß-Additiv, das aus den Verbindungen der Formel (I) ausgewählt ist,
    Figure imgb0008
    in der R1 und R2, gleich oder verschieden, unabhängig voneinander eine sekundäre lineare oder verzweigte Alkylgruppe, umfassend 2 bis 7 Kohlenstoffatome, vorzugsweise 3 bis 6 Kohlenstoffatome, darstellen,
    wobei das PAG ein Blockpolymer der Formel (VI) oder ein statistisches Polymer der Formel (VI) ist,
    Figure imgb0009
    in der
    ▪ R12 eine lineare oder verzweigte C1-C30-Alkylgruppe, vorzugsweise eine lineare oder verzweigte C8-C15-Alkylgruppe, darstellt;
    ▪ s und t unabhängig voneinander eine durchschnittliche Zahl im Bereich von 1 bis 5 darstellen.
  2. Zusammensetzung nach Anspruch 1, bei der das Anti-Verschleiß-Additiv aus den Verbindungen der Formel (I) ausgewählt ist,
    Figure imgb0010
     in der R1 und R2, gleich oder verschieden, eine sekundäre C3-Alkylgruppe oder eine sekundäre C6-Alkylgruppe darstellen.
  3. Zusammensetzung nach einem der Ansprüche 1 bis 2, umfassend zu 0,1 bis 3 Gew.-%, vorzugsweise zu 0,1 bis 2 Gew.-%, mehr bevorzugt zu 0,1 bis 1 Gew.-%, die Verbindung der Formel (I).
  4. Zusammensetzung nach einem der Ansprüche 1 bis 3, umfassend ein Schmierbasisöl.
  5. Zusammensetzung nach einem der Ansprüche 1 bis 4, ferner umfassend einen Reibungsmodifikator.
  6. Zusammensetzung nach einem der Ansprüche 1 bis 4, ferner umfassend einen organischen Reibungsmodifikator, der aus Estern, vorzugsweise aus Polyolmonoestern, ausgewählt ist, mehr bevorzugt aus Glycerinmonoestern ausgewählt ist.
  7. Zusammensetzung nach einem der Ansprüche 1 bis 4, ferner umfassend einen anorganischen Reibungsmodifikator.
  8. Verwendung einer Schmierstoffzusammensetzung nach einem der Ansprüche 1 bis 7 für die Schmierung eines Fahrzeugmotors, vorzugsweise eines Kraftfahrzeugs.
  9. Verwendung einer Schmiermittelzusammensetzung nach einem der Ansprüche 1 bis 7 zum Verringern des Verschleißes in einem Fahrzeugmotor.
EP17710731.5A 2016-03-15 2017-03-14 Schmiermittelzusammensetzung auf polyalkylenglykolbasis Active EP3430110B1 (de)

Applications Claiming Priority (2)

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FR1652189A FR3048977B1 (fr) 2016-03-15 2016-03-15 Composition lubrifiante a base de polyalkylene glycols
PCT/EP2017/055917 WO2017157892A1 (fr) 2016-03-15 2017-03-14 Composition lubrifiante a base de polyalkylene glycols

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EP3430110B1 true EP3430110B1 (de) 2025-01-08

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DE102017008676A1 (de) * 2016-09-21 2018-03-22 Klüber Lubrication München Se & Co. Kg Verwendung von Schmierstoffen auf der Basis von wasserlöslichen, hochviskosen Polyglykolen
FR3083244B1 (fr) 2018-07-02 2020-07-17 Total Marketing Services Composition pour refroidir et lubrifier un systeme de propulsion d'un vehicule electrique ou hybride
FR3088073B1 (fr) 2018-11-05 2021-07-23 Total Marketing Services Utilisation d'un diester pour ameliorer les proprietes anti-usure d'une composition lubrifiante

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CN109072120A (zh) 2018-12-21
FR3048977B1 (fr) 2020-02-07
JP2019508561A (ja) 2019-03-28
KR20180126477A (ko) 2018-11-27
KR102336568B1 (ko) 2021-12-09
EP3430110A1 (de) 2019-01-23
BR112018068689A2 (pt) 2019-01-15
MX2018011050A (es) 2019-01-24
WO2017157892A1 (fr) 2017-09-21
US20190078036A1 (en) 2019-03-14

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