EP3274432B1 - Composition lubrifiante - Google Patents

Composition lubrifiante Download PDF

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Publication number
EP3274432B1
EP3274432B1 EP16711811.6A EP16711811A EP3274432B1 EP 3274432 B1 EP3274432 B1 EP 3274432B1 EP 16711811 A EP16711811 A EP 16711811A EP 3274432 B1 EP3274432 B1 EP 3274432B1
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EP
European Patent Office
Prior art keywords
lubricating composition
composition according
group
branched
weight
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EP16711811.6A
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German (de)
English (en)
French (fr)
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EP3274432A1 (fr
Inventor
Goulven BOUVIER
Alder DA COSTA D'AMBROS
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TotalEnergies Onetech SAS
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Total Marketing Services SA
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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
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/002—Traction fluids
    • 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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • 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
    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • 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
    • C10M129/68—Esters
    • C10M129/70—Esters of monocarboxylic acids
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms 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
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • 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
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • C10M2207/2815—Esters of (cyclo)aliphatic monocarboxylic acids used as base material
    • 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
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/04—Molecular weight; Molecular weight distribution
    • 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
    • C10N2020/065—Saturated Compounds
    • 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
    • C10N2020/067—Unsaturated Compounds
    • 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
    • C10N2020/069—Linear chain compounds
    • 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
    • C10N2020/071—Branched chain compounds
    • 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
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • 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
    • 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
    • C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
    • 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
    • C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions

Definitions

  • the invention relates to the field of lubricating compositions, in particular lubricating compositions for motor vehicles, in particular the field of lubricating compositions for transmission, for gearbox or for axle.
  • the lubricating composition according to the invention comprises at least 30% by weight of the composition of at least one monoester, at least one polyalphaolefinic oil (PAO), the kinematic viscosity of which measured at 100 ° C. ranges from 40 to 3000 mm 2 . s -1 and at least one polyalphaolefinic oil (PAO) whose kinematic viscosity measured at 100 ° C ranges from 1.5 to 10 mm 2 .s -1 .
  • PAO polyalphaolefinic oil
  • the invention also relates to the use of this lubricating composition for reducing the fuel consumption of a vehicle equipped with a transmission, in particular an axle or a gearbox, lubricated by means of this lubricating composition.
  • Oils for gearboxes or for axles, and more generally gear oils must meet many requirements, in particular related to driving comfort (perfect gear change, silent operation, trouble-free operation, high reliability), service life of the assembly (reduction of wear during cold passage, no deposits and high thermal and oxidation stability, safe lubrication at high temperatures, stable viscosity situation and absence of shear loss, long life) as well as the consideration of environmental aspects (lower fuel consumption, reduced oil consumption, low noise emission, easy evacuation).
  • ATF oils for automatic transmission fluids due to their use, very specific requirements appear for ATF oils which are a great constancy of the coefficient of friction throughout the duration of the stay for optimum gear change, excellent aging stability for long oil change intervals, good viscosity-temperature resistance to ensure perfect operation with a hot engine and a cold engine and sufficient sealing compatibility with different elastomers used in transmission gaskets so that they do not swell, shrink or weaken.
  • Lubricating compositions for motor vehicles have an influence on the emission of pollutants and on the fuel consumption.
  • Lubricating compositions for vehicle engines allowing energy savings are often referred to as “fuel-eco” (FE), in English terminology.
  • FE fuel-eco
  • Such “fuel-eco” oils have been developed to meet these new needs. Reducing energy losses is therefore a constant search in the field of lubricating compositions for vehicles.
  • JP 2009 203 385 A describes lubricating compositions comprising a monoester compound of formula R 1 C (O) OR 2 with R 1 and R 2 of C13-C28 hydrocarbon groups, and a synthetic hydrocarbon oil exhibiting a kinematic viscosity measured at 100 ° C from 20 to 3 000 mm 2 / s.
  • US 2011/177989 A1 describes lubricating compositions for transmissions, in particular for gearboxes, and their use for limiting the fuel consumption of motor vehicles.
  • the compositions are suitable for all types of vehicles, in particular light vehicles, and are particularly suitable for vehicles with hybrid engines.
  • Lubricating compositions for vehicles must therefore have improved properties and performance. It is in particular necessary to provide alternative lubricating compositions, in particular lubricating compositions having a high viscosity index (VI) as well as a low coefficient of traction.
  • VI viscosity index
  • the desired lubricating compositions must have a high viscosity index in order to avoid cold energy losses due to friction but also for keep a sufficient film of lubricant hot on the lubricated elements.
  • a high viscosity index therefore guarantees less drop in viscosity when the temperature increases.
  • the composition according to the invention comprises at least one monoester (a), at least polyalphaolefinic oil (b) and at least one polyalphaolefinic oil (c). It may comprise only one monoester (a), only one polyalphaolefinic oil (b) and only one single polyalphaolefinic oil (c). It can also comprise one, two or three monoesters (a) but also one, two or three polyalphaolefinic oils (b) or even one two or three polyalphaolefinic oils (c).
  • the monoester (a) present in the lubricating composition according to the invention is a monoester of formula (I).
  • R 1 represents a hydrocarbon group, saturated or unsaturated, linear or branched, comprising from 14 to 20 carbon atoms, preferably from 14 to 18 carbon atoms, more preferably from 16 to 18 carbon atoms.
  • R 2 represents a hydrocarbon group, saturated or unsaturated, linear or branched, comprising from 3 to 14 carbon atoms, preferably from 4 to 12 atoms. of carbon, more preferably from 4 to 10 carbon atoms.
  • the monoester (a) present in the lubricating composition according to the invention is a monoester of formula (I) in which R 1 and R 2 are linear groups.
  • only R 1 or only R 2 is chosen from one or the other of these groups.
  • a monoester (a) of formula (I) in which R 1 is a saturated group and R 2 is a saturated group is particularly preferred.
  • a monoester (a) of formula (I) in which R 1 is an unsaturated group and R 2 is a saturated group is more particularly preferred.
  • the monoester (a) of formula (I) according to the invention can be chosen from numerous monoesters.
  • it is chosen from stearates, preferably alkyl stearates and alkenyl stearates, more preferably C 4 -C 10 -alkyl stearates, in particular butyl stearate, pentyl stearate, hexyl stearate, heptyl stearate, octyl stearate, nonyl stearate, decyl stearate.
  • stearates preferably alkyl stearates and alkenyl stearates, more preferably C 4 -C 10 -alkyl stearates, in particular butyl stearate, pentyl stearate, hexyl stearate, heptyl stearate, octyl stearate, nonyl stearate, decy
  • oleates preferably alkyl oleates and alkenyl oleates, more preferably C 4 -C 10 -alkyl oleates, in particular butyl oleate, oleate. pentyl, hexyl oleate, heptyl oleate, octyl oleate, nonyl oleate, decyl oleate.
  • linoleates preferably alkyl linoleates and alkenyl linoleates, more preferably C 4 -C 10 -alkyl linoleates, in particular butyl linoleate, pentyl linoleate, hexyl linoleate, heptyl linoleate, octyl linoleate, nonyl linoleate, decyl linoleate.
  • the monoester (a) of formula (I) according to the invention can also be chosen from alkenic monoesters and alkyl monoesters, preferably C 2 -C 10 -alkyl monoesters, in particular ethyl monoesters, propyl monoesters, butyl monoesters, pentyl monoesters, hexyl monoesters, heptyl monoesters, octyl monoesters, nonyl monoesters, decyl monoesters.
  • the lubricating composition according to the invention comprises from 30 to 70% by weight of the monoester composition of formula (I). Also advantageously, the lubricating composition according to the invention comprises from 30 to 60% by weight of the composition or from 30 to 50% by weight of the monoester composition of formula (I).
  • the lubricating composition according to the invention comprises at least two polyalphaolefinic oils (b) and (c). These are hydrogenated PAOs.
  • Polyalphaolefinic oil (b) is a heavy PAO. It has a kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard ranging from 40 to 3000 mm 2 .s -1 .
  • Polyalphaolefinic oil (c) is a light PAO. It has a kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard ranging from 1.5 to 10 mm 2 .s -1 .
  • the kinematic viscosity of the polyalphaolefinic oil (b), measured at 100 ° C. according to the ASTM D445 standard ranges from 40 to 1500 mm 2 .s -1 . More preferably, the kinematic viscosity of the polyalphaolefinic oil (b), measured at 100 ° C. according to the ASTM D445 standard, ranges from 40 to 300 mm 2 .s -1 .
  • the weight average molecular mass of the polyalphaolefinic oil (b) is greater than 2,500 Da or ranges from 2,500 to 80,000 Da. More preferably, the weight average molecular mass of the polyalphaolefinic oil (b) ranges from 4000 to 50,000 Da.
  • the polyalphaolefinic oil (b) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 40 to 1500 mm 2 .s -1 and a weight average molecular mass ranging from 2 500 to 80,000 Da or 4,000 to 50,000 Da. More particularly preferably, the polyalphaolefinic oil (b) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 40 to 300 mm 2 .s -1 and a weight average molecular mass ranging from 2 500 to 80,000 Da or 4,000 to 50,000 Da.
  • the kinematic viscosity of the polyalphaolefinic oil (c), measured at 100 ° C according to the ASTM D445 standard ranges from 1.5 to 10 mm 2 .s -1 or from 2 to 10 mm 2 .s - 1 . More preferably, the kinematic viscosity of the polyalphaolefinic oil (c), measured at 100 ° C according to the ASTM D445 standard, ranges from 1.5 to 8 mm 2 .s -1 or from 2 to 8 mm 2 .s -1 .
  • the weight average molecular mass of the polyalphaolefinic oil (c) is less than 500 Da or ranges from 50 to 500 Da. More preferably, the weight average molecular mass of the polyalphaolefinic oil (c) ranges from 50 to 350 Da or from 50 to 300 Da.
  • the polyalphaolefinic oil (c) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 1.5 to 8 mm 2 .s -1 and a weight average molecular mass ranging from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da or else a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 2 to 8 mm 2 .s -1 and an average molecular mass in weight ranging from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da.
  • the polyalphaolefinic oil (c) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 1.5 to 6 mm 2 .s -1 and a weight average molecular mass ranging from from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da or else a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 2 to 6 mm 2 .s -1 and an average molecular mass by weight ranging from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da.
  • polyalphaolefinic oil (c) As particular polyalphaolefinic oil (c) according to the invention, mention may also be made of an oil of kinematic viscosity at 100 ° C., measured according to the ASTM D445 standard, ranging from 3 to 4 mm 2 .s -1 , comprising more than 50%. by weight of 9-methyl-11-octyl-henicosane, 1-decene trimer.
  • the respective proportions of polyalphaolefinic oils (b) and (c) in the lubricating composition according to the invention can vary.
  • the lubricating composition according to the invention comprises from 5 to 30%, preferably from 5 to 25%, by weight of the polyalphaolefinic oil composition (b).
  • the lubricating composition according to the invention comprises from 5 to 70%, preferably from 30 to 70%, by weight of the polyalphaolefinic oil composition (c).
  • the respective proportions of polyalphaolefinic oils (b) and (c) within the lubricating composition according to the invention can also vary according to the intended application for the lubricating composition according to the invention.
  • the lubricating composition according to the invention may comprise from 1 to 40% by weight of the polyalphaolefinic oil composition (b) and from 30 to 69% by weight of the composition.
  • polyalphaolefinic oil (c) may comprise from 1 to 40% by weight of the polyalphaolefinic oil composition (b) and from 30 to 69% by weight of the composition.
  • the lubricating composition according to the invention can comprise other oils as well as additives.
  • the lubricating composition according to the invention can comprise any type of mineral, synthetic or natural, animal or vegetable lubricating base oil, suitable for its use.
  • the base oils used in the lubricating compositions according to the invention can be oils of mineral or synthetic origins belonging to groups I to V according to the classes defined in the AP1 classification (or their equivalents according to the ATIEL classification) (table A). or their mixtures.
  • Table A ⁇ /u> Saturated content Sulfur content Viscosity index (VI)
  • Group I Mineral oils ⁇ 90% > 0.03% 80 ⁇ VI ⁇ 120
  • Group III Hydrocracked or hydro-isomerized oils ⁇ 90% ⁇ 0.03% ⁇ 120
  • the mineral base oils useful according to the invention include all types of bases obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, dealphating, solvent dewaxing, hydrotreatment, hydrocracking, hydroisomerization. and hydrofinishing. Mixtures of synthetic and mineral oils can also be used.
  • lubricating bases there is generally no limitation as to the use of different lubricating bases to produce the lubricating compositions according to the invention, except that they must have properties, in particular of viscosity, viscosity index, sulfur content. , oxidation resistance, suitable for use in engines or for vehicle transmissions.
  • the base oils of the lubricating compositions according to the invention can also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, as well as from polyalphaolefins.
  • the other 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 weight average molecular mass is generally between 250 and 3000 Da according to the ASTM D5296 standard.
  • the lubricating composition according to the invention comprises 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 comprises at least 60% by mass, or even at least 70% by mass, of base oils relative to the total mass of the composition. Also advantageously, the lubricating composition according to the invention comprises from 75 to 99.9% by mass of base oils relative to the total mass of the composition.
  • additives can be used for the lubricating composition according to the invention.
  • the preferred additives for the lubricating composition according to the invention are chosen from detergent additives, anti-wear additives, friction modifying additives, extreme pressure additives, dispersants, pour point improvers, anti- mousse, thickeners and mixtures thereof.
  • the lubricating composition according to the invention comprises at least one pour point improving additive or PPD agent (for depressant point or pour point reducing agent).
  • PPD agent for depressant point or pour point reducing agent
  • pour point reducing agents By slowing the formation of paraffin crystals, pour point reducing agents generally improve the cold behavior of the lubricating composition according to the invention.
  • pour point reducing agents mention may be made of polymethacrylates of alkyl, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes, alkylated polystyrenes.
  • the lubricating composition according to the invention can also comprise at least one anti-wear additive, at least one extreme pressure additive or their mixtures.
  • Antiwear additives and extreme pressure additives protect rubbing surfaces by forming a protective film adsorbed on these surfaces.
  • antiwear additives are chosen from phospho-sulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP.
  • the compounds preferred are of formula Zn ((SP (S) (OR 3 ) (OR 4 )) 2 , in which R 3 and R 4 , identical or different, independently represent an alkyl group, preferably an alkyl group comprising from 1 to 18 atoms of carbon.
  • Amine phosphates are also anti-wear additives which can be used in the lubricating composition according to the invention.
  • the phosphorus provided by these additives can act as a poison in the catalytic systems of automobiles because these additives generate These effects can be minimized by partially substituting the amine phosphates with additives which do not provide phosphorus, such as, for example, polysulfides, in particular sulfur-containing olefins.
  • 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 ad anti-wear and extreme pressure additives.
  • the lubricating composition according to the invention can comprise at least one friction modifying additive.
  • the friction modifier additive can be chosen from a compound providing metallic elements and an ash-free compound.
  • the compounds providing metallic elements mention may be made of transition metal complexes such as Mo, Sb, Sn, Fe, Cu, Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen or carbon atoms. sulfur or phosphorus.
  • the ash-free friction modifying additives are generally of organic origin and can be chosen from fatty acid monoesters and polyols, alkoxylated amines, alkoxylated fatty amines, fatty epoxides, borate fatty epoxides; fatty amines or fatty acid glycerol esters.
  • the fatty compounds comprise at least one hydrocarbon group comprising from 10 to 24 carbon atoms.
  • the lubricating composition according to the invention can comprise from 0.01 to 2% by mass or from 0.01 to 5% by mass, preferably from 0.1 to 1.5% by mass or from 0.1 at 2% by mass relative to the total mass of the lubricating composition, of friction modifier additive.
  • 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. This degradation can be reflected in particular by the formation of deposits, by the presence of sludge or by an increase in the viscosity of the lubricating composition.
  • Antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides.
  • antioxidant additives commonly used there may be mentioned antioxidant additives of phenolic type, antioxidant additives of amine type, phosphosulfurized antioxidant additives. Some of these antioxidant additives, for example phosphosulfurized antioxidant additives, can generate ash.
  • the phenolic antioxidant additives can be ash free or in the form of neutral or basic metal salts.
  • the antioxidant additives can in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, diphenylamines substituted with 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 carbon vicinal of the carbon carrying the alcohol function is substituted by at least one C 1 - C 10 alkyl group, preferably one.
  • Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives.
  • Examples of amino compounds are aromatic amines, for example aromatic amines of formula NR 5 R 6 R 7 in which R 5 represents an aliphatic group or an aromatic group, optionally substituted, R 6 represents an aromatic group, optionally substituted, R 7 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 8 S (O) z R 9 in which R 8 represents an alkylene group or an alkenylene group, R 9 represents an alkyl group, a 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.
  • Another class of antioxidant additives is that of copper compounds, for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulfonates, phenates, copper acetylacetonates. Copper I and II salts, salts of succinic acid or anhydride can also be used.
  • the lubricating composition according to the invention can contain all types of antioxidant additives known to those skilled in the art.
  • the lubricating composition comprises at least one antioxidant additive free of ash.
  • the lubricating composition according to the invention comprises from 0.5 to 2% by weight, relative to the total weight of the composition, of at least one antioxidant additive.
  • the lubricating composition according to the invention can 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 the by-products of oxidation and combustion.
  • the detergent additives which can be used in the lubricating composition according to the invention are generally known to those skilled in the art.
  • the detergent additives can be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
  • the associated cation can 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, sulphonates, salicylates, naphthenates, as well as salts of phenates.
  • the alkali metals and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
  • These metal salts generally include the metal in a stoichiometric amount or else in excess, therefore in an amount greater than the stoichiometric amount.
  • 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 can also comprise at least one dispersing agent.
  • the dispersing agent can be chosen from Mannich bases, succinimides and their derivatives.
  • the lubricating composition according to the invention can comprise from 0.2 to 10% by mass of dispersing agent relative to the total mass of the lubricating composition.
  • the lubricating composition can also comprise at least one polymer improving the viscosity index.
  • polymer improving the viscosity index mention may be made of polymer esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, of styrene, butadiene and isoprene, and polymethacrylates (PMA).
  • the composition lubricant according to the invention can comprise from 1 to 15% by mass relative to the total mass of the lubricating polymer composition improving the viscosity index.
  • the invention also relates to the use as a lubricant of the lubricating composition according to the invention.
  • the lubricating composition according to the invention is useful for lubricating a gear system, in particular a vehicle transmission, in particular a axle or a gearbox.
  • composition according to the invention is also advantageously used for reducing the fuel consumption of an engine, in particular of a vehicle engine.
  • the composition according to the invention is used to reduce the fuel consumption of a vehicle equipped with a transmission, in particular an axle or a gearbox, lubricated by means of this composition.
  • the invention also relates to the use of at least one lubricating composition according to the invention for reducing the traction coefficient of a transmission oil, preferably for reducing the traction coefficient of a gearbox oil, in particular of a gearbox of a vehicle.
  • the invention also relates to the use for reducing the tensile coefficient of a lubricating composition comprising at least one heavy PAO (b) and at least one light PAO (c) and at least 30% by weight of composition of a monoester. (a) of formula (I) defined according to the invention.
  • the uses of the lubricating composition according to the invention comprise bringing at least one element of the transmission, in particular the gearbox or the axle, into contact with a lubricating composition according to the invention.
  • Example 1 preparation of lubricating compositions according to the invention
  • Decyl oleate (Stéarinerie Dubois) is mixed with a heavy PAO (product Spectrasyn mPAO150 from the company Exxon - KV100 of approximately 150 mm 2 .s -1 ), a first light PAO (product Spectrasyn 6 from the company Exxon - KV100 of approximately 6 mm 2 .s -1 ) and a second light PAO (Spectrasyn 8 product from the company Exxon - KV100 of approximately 8 mm 2 .s -1 ).
  • a heavy PAO product Spectrasyn mPAO150 from the company Exxon - KV100 of approximately 150 mm 2 .s -1
  • a first light PAO product Spectrasyn 6 from the company Exxon - KV100 of approximately 6 mm 2 .s -1
  • a second light PAO Spectrasyn 8 product from the company Exxon - KV100 of approximately 8 mm 2
  • a second composition is prepared according to the invention in which the decyl oleate is replaced by butyl stearate (Stéarinerie Dubois).
  • the respective amounts of the various constituents are presented in Table 1 and are expressed in% by mass relative to the mass of the final composition.
  • the viscosity index (Viscosity Index in English or VI) is measured according to the standard ASTM D2270.
  • composition (1) according to the invention (%)
  • Composition (2) according to the invention (%) decyl oleate 30 0 butyl stearate 0 30 Heavy DTP (b) 8 10 Light DTP (c1) (Spectrasyn 6) 30 4 Light DTP (c2) (Spectrasyn 8) 32 56 Viscosity index (VI) 174 176
  • Comparative Example 1 Preparation of Comparative Lubricating Compositions
  • 3 comparative lubricating compositions are prepared by replacing the decyl oleate respectively with methyl oleate (Stéarinerie Dubois), methyl stearate (Stéarinerie Dubois) and isononanoate of isononyl (Stéarinerie Dubois).
  • the respective amounts of the various constituents are presented in Table 2 and are expressed in% by mass relative to the mass of the final composition.
  • Example 2 comparison of the tensile coefficient of the compositions according to the invention and of the comparative lubricating compositions
  • the lubricating compositions according to the invention have a better coefficient of traction than the comparative lubricating compositions.
  • Example 3 comparison of the oxidation resistance properties of the lubricating composition (1) according to the invention and of the comparative lubricating composition (1)
  • the properties of resistance to oxidation of the lubricating compositions prepared are evaluated according to standard CEC-L48-A-00 method A and the results obtained are presented in Table 4.
  • the greater the variation of KV 100 (R KV 100). the lower the resistance to oxidation.
  • PA1 Peak Area Increase
  • the lubricating composition according to the invention has an oxidation resistance which is greater than that of the comparative lubricating composition. No deposit of insoluble compounds occurs with the lubricating composition according to the invention.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
EP16711811.6A 2015-03-23 2016-03-22 Composition lubrifiante Active EP3274432B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1552387A FR3034100B1 (fr) 2015-03-23 2015-03-23 Composition lubrifiante
PCT/EP2016/056237 WO2016150950A1 (fr) 2015-03-23 2016-03-22 Composition lubrifiante

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EP3274432A1 EP3274432A1 (fr) 2018-01-31
EP3274432B1 true EP3274432B1 (fr) 2021-10-27

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US (1) US20180112148A1 (enrdf_load_stackoverflow)
EP (1) EP3274432B1 (enrdf_load_stackoverflow)
JP (1) JP2018509512A (enrdf_load_stackoverflow)
CN (1) CN107466315A (enrdf_load_stackoverflow)
FR (1) FR3034100B1 (enrdf_load_stackoverflow)
WO (1) WO2016150950A1 (enrdf_load_stackoverflow)

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JP6500271B2 (ja) * 2015-03-30 2019-04-17 出光興産株式会社 潤滑油組成物
JP6789615B2 (ja) * 2015-03-31 2020-11-25 出光興産株式会社 変速機用潤滑油組成物
EP3601504A1 (en) * 2017-03-24 2020-02-05 ExxonMobil Chemical Patents Inc. Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same
US10738258B2 (en) 2017-03-24 2020-08-11 Exxonmobil Research And Engineering Company Method for improving engine fuel efficiency and energy efficiency
WO2018175046A1 (en) * 2017-03-24 2018-09-27 Exxonmobil Chemical Patents Inc. Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same
US10858610B2 (en) 2017-03-24 2020-12-08 Exxonmobil Chemical Patents Inc. Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same
US10876062B2 (en) 2017-03-24 2020-12-29 Exxonmobil Chemical Patents Inc. Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same
WO2018175047A1 (en) * 2017-03-24 2018-09-27 Exxonmobil Chemical Patents Inc. Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same
US10808196B2 (en) 2017-03-28 2020-10-20 Exxonmobil Chemical Patents Inc. Cold cranking simulator viscosity reducing base stocks and lubricating oil formulations containing the same
FR3094377B1 (fr) * 2019-04-01 2021-05-21 Total Marketing Services Composition lubrifiante pour transmission
EP4069808B1 (en) 2019-12-04 2023-08-23 The Lubrizol Corporation Ester base stocks to improve viscosity index and efficiency in driveline and industrial gear lubricating fluids
WO2022072962A1 (en) * 2020-09-30 2022-04-07 Exxonmobil Research And Engineering Company Low friction and low traction lubricant compositions useful in dry clutch motorcycles

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US4956122A (en) * 1982-03-10 1990-09-11 Uniroyal Chemical Company, Inc. Lubricating composition
CA1208196A (en) * 1982-03-10 1986-07-22 Raymond F. Watts Lubricating composition
US4464277A (en) * 1982-10-25 1984-08-07 Standard Oil Company (Indiana) Synthetic lubricant composition
US6713439B2 (en) * 2002-06-05 2004-03-30 Infineum International Ltd. Energy conserving power transmission fluids
US7585823B2 (en) * 2003-09-13 2009-09-08 Exxonmobil Chemical Patents Inc. Lubricating fluids with enhanced energy efficiency and durability
US7732389B2 (en) * 2005-02-04 2010-06-08 Exxonmobil Chemical Patents Inc. Lubricating fluids with low traction characteristics
JP5396628B2 (ja) * 2008-02-28 2014-01-22 東燃ゼネラル石油株式会社 潤滑油組成物
FR2936812B1 (fr) * 2008-10-03 2010-10-15 Total France Compositions lubrifiantes pour transmissions.
CN102776056B (zh) * 2012-08-13 2014-04-02 中国石油化工股份有限公司 一种开式齿轮润滑油组合物及其制备方法
JP6247600B2 (ja) * 2014-06-16 2017-12-13 Ｊｘｔｇエネルギー株式会社 変速機用潤滑油組成物

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WO2016150950A1 (fr) 2016-09-29
CN107466315A (zh) 2017-12-12
EP3274432A1 (fr) 2018-01-31
FR3034100A1 (fr) 2016-09-30
FR3034100B1 (fr) 2017-04-28
JP2018509512A (ja) 2018-04-05
US20180112148A1 (en) 2018-04-26

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