EP3331974A1 - Compositions lubrifiantes pour prevenir ou diminuer le pre-allumage dans un moteur - Google Patents
Compositions lubrifiantes pour prevenir ou diminuer le pre-allumage dans un moteurInfo
- Publication number
- EP3331974A1 EP3331974A1 EP16750763.1A EP16750763A EP3331974A1 EP 3331974 A1 EP3331974 A1 EP 3331974A1 EP 16750763 A EP16750763 A EP 16750763A EP 3331974 A1 EP3331974 A1 EP 3331974A1
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- European Patent Office
- Prior art keywords
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- ignition
- engine
- group
- use according
- Prior art date
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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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/24—Polyethers
- C10M145/26—Polyoxyalkylenes
- C10M145/36—Polyoxyalkylenes etherified
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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
- 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
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- 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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/24—Polyethers
- C10M145/26—Polyoxyalkylenes
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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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/24—Polyethers
- C10M145/26—Polyoxyalkylenes
- C10M145/30—Polyoxyalkylenes of alkylene oxides containing 3 carbon atoms only
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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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/24—Polyethers
- C10M145/26—Polyoxyalkylenes
- C10M145/32—Polyoxyalkylenes of alkylene oxides containing 4 or more carbon atoms
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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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/24—Polyethers
- C10M145/26—Polyoxyalkylenes
- C10M145/34—Polyoxyalkylenes of two or more specified different types
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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- 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
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- 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
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- 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 invention relates to the use of a lubricating composition to prevent or reduce pre-ignition in an engine. More particularly, the invention relates to the use of a lubricating composition comprising at least one base oil and at least one polyalkylene glycol (PAG) for preventing or reducing pre-ignition in an engine, preferably in a vehicle engine. , in particular of a motor vehicle.
- PAG polyalkylene glycol
- the present invention also relates to a method for preventing or reducing the pre-ignition in an engine, preferably in a vehicle engine, especially a motor vehicle, implementing this lubricant composition.
- the present invention also relates to the use of a polyalkylene glycol (PAG) in a lubricant composition to prevent or reduce pre-ignition in an engine, preferably in a motor vehicle, especially motor vehicles.
- PAG polyalkylene glycol
- normal combustion in a spark-ignition engine occurs when a mixture of fuel, and in particular fuel and air, is ignited in the combustion chamber inside the cylinder by the production of a fuel. spark from a spark plug.
- Such normal combustion is generally characterized by expanding the flame front through the combustion chamber in an orderly and controlled manner.
- the air / fuel mixture may be prematurely ignited by a source of ignition prior to ignition by the spark of the spark plug, leading to a phenomenon known as pre-ignition.
- pre-ignition it is preferable to reduce or even eliminate the pre-ignition, as this generally results in the presence of a sharp increase in temperatures and pressures in the combustion chamber, and thus have a significant negative impact on the efficiency. and the overall performance of an engine.
- pre-ignition can cause significant damage to the cylinders, pistons, spark plugs and valves in the engine and in some cases can even lead to engine failure or even engine failure.
- LSPI low-speed pre-ignition
- the application WO 2015023559 describes a method for reducing the pre-ignition by adding, in a lubricant, an additive for retarding ignition, said additive being chosen from organic compounds comprising at least one aromatic ring.
- an additive for retarding ignition said additive being chosen from organic compounds comprising at least one aromatic ring.
- these light organic compounds could cause an excessive increase in lubricant volatility.
- An object of the present invention is therefore to provide compounds as well as a lubricating composition comprising these compounds which overcomes all or part of the aforementioned drawbacks.
- Another object of the present invention is to provide a lubrication method for preventing or reducing pre-ignition in an engine.
- the invention thus relates to the use of a lubricating composition
- a lubricating composition comprising at least one base oil and at least one polyalkylene glycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms , including at least one butylene oxide to prevent or reduce pre-ignition in an engine.
- PAG polyalkylene glycol
- the Applicant has found that the presence of at least one PAG obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, of which at least one butylene oxide in a lubricating composition makes it possible to the lubricating composition, when implemented in an engine, to prevent or reduce the pre-ignition in the engine.
- the present invention makes it possible to formulate lubricant compositions having both good stability and good prevention or pre-ignition reduction properties when used in an engine.
- the lubricant compositions according to the invention have good pre-ignition prevention or reduction properties once implemented in an engine without the need to associate them with other technical solutions to prevent or reduce the meadow. ignition, and in particular technical solutions requiring to reduce the calcium content or causing an excessive increase in the volatility of the lubricant composition.
- the lubricant compositions according to the invention have good prevention or pre-ignition reduction properties once implemented in an engine and whose formulation is easy to implement.
- the PAG is a PAG of formula (A)
- Yi and Y 2 represent, independently of one another, a hydrogen atom or a hydrocarbon group, preferably a CC pack 30 alkyl or alkylphenyl;
- N represents an integer greater than or equal to 2, preferably less than 500, more preferably from 2 to 200, still more preferably from 2 to 60 or from 5 to 30 or from 7 to 20, advantageously from 7 to 15;
- X represents one or more integers ranging from 1 to n;
- R 2x -i and R 2x represent, independently of each other, a hydrogen atom or a hydrocarbon group comprising between 1 and 6 carbon atoms, preferably a linear or branched CC 6 alkyl group, the sum of the numbers of carbon atoms of R 2x -i and R 2x is 2 for at least one value of x.
- the PAG is a PAG of formula (A) in which:
- Y 2 represents a hydrogen atom
- R 2x -i and R 2x identical or different, represent
- the PAG is a PAG of formula (B)
- R1 represents a linear or branched C 8 -C 12 -alkyl group
- P represents a number ranging from 2 to 10, preferably from 2 to 6;
- Q represents a number ranging from 2 to 10, preferably from 2 to 6.
- the weight content of PAG, relative to the total weight of the lubricating composition ranges from 5 to 50%, preferably from 10 to 40%, advantageously from 15 to 30%.
- the lubricating composition further comprises an additive selected from friction modifiers, detergents, antiwear additives, extreme pressure additives, viscosity index improvers, dispersants and the like. , antioxidants, pour point improvers, defoamers, thickeners and mixtures thereof.
- the lubricant composition is used to prevent or reduce pre-ignition in a vehicle engine, preferably a motor vehicle.
- the lubricant composition is used to prevent or reduce low speed pre-ignition (LSPI) in an engine, preferably a vehicle, preferably a motor vehicle.
- LSPI low speed pre-ignition
- the invention also relates to a method for preventing or reducing pre-ignition in an engine, said method comprising at least one step of contacting a mechanical part of the engine with a lubricant composition as defined above.
- the invention also relates to the use of a polyalkylene glycol (PAG) according to the invention in a lubricant composition comprising at least one base oil to prevent or reduce the pre-ignition in an engine.
- PAG polyalkylene glycol
- the lubricant composition used according to the invention comprises at least one polyalkylene glycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, of which at least one butylene oxide.
- PAG polyalkylene glycol
- the PAG may be a polymer or a copolymer (random or block) of alkylene oxides, which may in particular be prepared according to the methods described in application WO 2009/134716, page 2 line 26 to page 4 line 12, for example by etching an alcohol initiator on the epoxy bond of an alkylene oxide and propagating the reaction.
- the PAG is obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, of which at least one butylene oxide, in particular chosen from 1,2-oxide. butylene or 2,3-butylene oxide, preferably 1,2-butylene oxide.
- alkylene oxides comprising from 3 to 8 carbon atoms, of which at least one butylene oxide, in particular chosen from 1,2-oxide. butylene or 2,3-butylene oxide, preferably 1,2-butylene oxide.
- copolymers of butylene oxide and propylene oxide are particularly preferred.
- PAGs can be prepared by reacting one or more alcohols with a mixture of butylene oxide and propylene oxide.
- the PAGs are prepared with a mixture of butylene oxide and propylene oxide in which the weight ratio between butylene oxide and propylene oxide is from 3: 1 to 1: 3, preferably from 3: 1 to 1: 1.
- PAGs are prepared from alcohol having 8 to 12 carbon atoms. 2-Ethylhexanol and dodecanol, alone or in a mixture, and in particular dodecanol, are particularly preferred.
- the PAGs according to the invention are such that their molar carbon to oxygen ratio is greater than 3: 1, preferably ranging from 3: 1 to 6: 1. This confers in particular on said PAG polarity and viscosity index properties particularly suitable for use in motor oil.
- the PAGs are prepared with a mixture of butylene oxide and propylene oxide in which the mass ratio between butylene oxide and propylene oxide is greater than 3: 1, preferably greater than 5: 1, more preferably greater than 8: 1, advantageously from 8: 1 to 10: 1.
- the PAG is obtained by polymerization of butylene oxides only, in particular chosen from 1,2-butylene oxide or 2,3-butylene oxide, preferably 1, 2-butylene oxide.
- the PAG is a PAG of formula (A)
- Y 1 and Y 2 represent, independently of one another, a hydrogen atom, or a hydrocarbon group, preferably a C 1 -C 30 alkyl or alkylphenyl group; n represents an integer greater than or equal to 2, preferably less than 500, more preferably from 2 to 200, still more preferably from 2 to 60 or from 5 to 30 or from 7 to 20, advantageously from 7 to 15;
- x represents one or more integers ranging from 1 to n;
- R 2x -i and R 2x represent, independently of one another, a hydrogen atom or a hydrocarbon group comprising between 1 and 6 carbon atoms, preferably a linear or branched CrC 6 alkyl group,
- the sum of the carbon number of R 2x- i and R 2x is equal to 2 for at least one value of x.
- the groups R 2x- and R 2x represent, independently of each other, a linear C 1 -C 6 alkyl group.
- At least one of R 2x -i and R 2x represents a hydrogen atom.
- 2x preferably R represents a hydrogen atom.
- the sum of the carbon number of R 2x-1 and R 2x is from 1 to 6 and the sum of the numbers of carbon atoms from R 2x-1 and R 2x equals 2 for at least one value of x.
- the PAG is a PAG of formula (A) in which:
- Y 2 represents a hydrogen atom
- R 2x- and R 2x identical or different, independently represent a hydrogen atom or a group CrC 2 -alkyl.
- the PAG is a PAG of formula (B)
- R1 represents a linear or branched C 8 -C 12 -alkyl group
- p represents a number ranging from 2 to 10, preferably from 2 to 6;
- the PAGs are preferably light PAGs characterized by a kinematic viscosity measured at 100 ° C. according to ASTM D445 ranging from 1 to 12 mm 2 / s, preferably from 2 to 7 mm 2 / s.
- the viscosity index (Viscosity Index in English or VI measured according to standard NFT 60136) of the PAGs used in the invention is greater than or equal to 100, preferably greater than or equal to 120.
- the lubricating composition used according to the invention comprises a content by weight of PAG, relative to the total weight of the lubricating composition, ranging from 5 to 50%, preferably from 10 to 40%, advantageously from 15 to 30%.
- PAG that may be used in the lubricant composition used according to the invention, mention may be made of the PAGs described in the documents WO 2012/070007 or WO 2013/164457.
- the lubricating composition used according to the invention also comprises at least one base oil.
- the lubricant composition used according to the invention may comprise any type of mineral, synthetic or natural lubricating base oil, animal or vegetable, known to those skilled in the art.
- the base oils used in the lubricant compositions according to the invention may be oils of mineral or synthetic origins 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 mineral base oils according to the invention include all types of base oils obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, desalphating, solvent dewaxing, hydrotreatment, hydrocracking , hydroisomerization and hydrofinition.
- Mixtures of synthetic and mineral oils can also be used.
- lubricating bases for producing the lubricating compositions used according to the invention, except that they must have properties, in particular viscosity, viscosity index, sulfur, oxidation resistance, adapted for use for engines or for vehicle transmissions.
- the base oils of the lubricant compositions used according to the invention may also be chosen from synthetic oils, such as certain carboxylic acid esters and alcohols, and 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 weight is generally between 250 and 3000 according to the ASTM D5296 standard.
- the base oils of the present invention are chosen from the above base oils whose aromatic content is between 0 and 45%, preferably between 0 and 30%.
- the aromatic content of the oils is measured according to UV Burdett method.
- the lubricant composition used according to the invention comprises at least 50% by weight of base oils relative to the total mass of the composition. More advantageously, the lubricant composition used according to the invention comprises at least 60% by weight, or even at least 70% by weight, of base oils relative to the total mass of the composition.
- the lubricant composition used according to the invention comprises from 60 to 99.5% by weight of base oils, preferably from 70 to 99.5% by weight of base oils, relative to the total mass of the composition.
- base oils preferably from 70 to 99.5% by weight of base oils, relative to the total mass of the composition.
- Many additives can be used for this lubricant composition used according to the invention.
- the preferred additives for the lubricant composition used according to the invention are chosen from friction modifiers, detergents, anti-wear additives, extreme pressure additives, viscosity index improvers, dispersants, antioxidants, pour point improvers, defoamers, thickeners and mixtures thereof.
- the lubricant composition used according to the invention comprises at least one antiwear additive, at least one extreme pressure additive or their mixtures.
- Anti-wear additives and extreme pressure additives protect friction surfaces by forming a protective film adsorbed on these surfaces.
- the anti-wear additives are chosen from phosphosulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTPs.
- the preferred compounds have the formula Zn ((SP (S) (OR 2 ) (OR 3 )) 2 , in which R 2 and R 3 , which may be identical or different, independently represent an alkyl group, preferably an alkyl group containing from 1 to 18 carbon atoms.
- 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 of the catalytic systems of automobiles because these additives are ash generators.
- non-phosphorus additives such as, for example, polysulfides, especially sulfur-containing olefins.
- the lubricant composition according to the invention may comprise from 0.01 to 6% by weight, preferably from 0.05 to 4% by weight, more preferably from 0.1 to 2% by weight relative to the mass. total lubricating composition, antiwear additives and extreme pressure additives.
- the lubricant composition according to the invention may comprise at least one friction-modifying additive.
- the friction modifying additive may be chosen from a compound providing metal elements and an ash-free compound.
- the compounds providing metal elements mention may be made of transition metal complexes such as Mo, Sb, Sn, Fe, Cu and Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen, sulfur or phosphorus.
- the ashless friction modifier additives are generally of organic origin and may be selected from monoesters of fatty acids 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 lubricant composition according to the invention may comprise from 0.01 to 2% by weight or from 0.01 to 5% by weight, preferably from 0.1 to 1.5% by weight or 0.1 at 2% by weight relative to the total mass of the lubricant composition, friction modifier additive.
- the lubricant composition according to the invention may comprise at least one antioxidant additive.
- the antioxidant additive generally serves to retard the degradation of the lubricating composition in service. This degradation can notably result in the formation of deposits, the presence of sludge or an increase in the viscosity of the lubricant composition.
- Antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides.
- antioxidant additives commonly used, mention may be made of antioxidant additives of phenolic type, antioxidant additives of amine type, antioxidant phosphosulfur additives. Some of these antioxidant additives, for example phosphosulfur antioxidant additives, can be ash generators. Phenolic antioxidant additives may be ash-free or may be in the form of neutral or basic metal salts.
- the antioxidant additives may especially 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, and N, N '-dialkyl-aryl diamines and mixtures thereof.
- the sterically hindered phenols are chosen from compounds comprising a phenol group in which at least one vicinal carbon of the carbon bearing the alcohol function is substituted with at least one alkyl group containing 10 carbon atoms, preferably an alkyl group containing CrC 6 , preferably a C 4 alkyl group, preferably by the ter-butyl group.
- Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives.
- amine compounds are the aromatic amines, for example the aromatic amines of formula NR 4 R 5 R 6 in which R 4 represents an optionally substituted aliphatic or aromatic group, R 5 represents an optionally substituted aromatic group
- R 6 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 7 S (O) z R 8 in which R 7 represents an alkylene group or an alkenylene group, R 8 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.
- antioxidant additives is copper compounds, for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulphonates, phenates, copper acetylacetonates. Copper salts I and II, succinic acid or anhydride salts can also be used.
- the lubricant composition according to the invention may contain all types of antioxidant additives known to those skilled in the art.
- the lubricating composition comprises at least one ash-free antioxidant additive.
- 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 lubricant composition according to the invention may also comprise at least one detergent additive.
- the detergent additives generally make it possible to reduce the formation of deposits on the surface of the metal parts by dissolving the secondary oxidation and combustion products.
- the detergent additives that can be used in the lubricant composition according to the invention are generally known to those skilled in the art.
- the detergent additives 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 metal or alkaline earth metal.
- the detergent additives are preferably chosen from the alkali metal or alkaline earth metal salts of carboxylic acids, the sulphonates, the salicylates, the naphthenates and the phenate salts.
- the alkali and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
- metal salts generally comprise the metal in stoichiometric amount or in excess, therefore in an amount greater than the stoichiometric amount. It is then overbased detergent additives; the excess metal bringing the overbased character to the detergent additive is then generally in the form of an oil insoluble metal salt, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate .
- an oil insoluble metal salt for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate .
- the lubricant composition according to the invention may comprise from 2 to 4% by weight of detergent additive relative to the total mass of the lubricating composition.
- the lubricant composition according to the invention may also comprise at least one pour point depressant additive. By slowing the formation of paraffin crystals, pour point depressant additives generally improve the cold behavior of the lubricant composition according to the invention.
- pour point depressant additives mention may be made of alkyl polymethacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes and alkylated polystyrenes.
- the lubricant 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 weight of dispersing agent relative to the total mass of the lubricating composition.
- the lubricating composition of the present invention may also comprise at least one viscosity index improving additive.
- additives improving the viscosity number include polymeric esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, styrene, butadiene and isoprene, polyacrylates, polymethacrylates (PMA) or alternatively olefin copolymers, in particular ethylene / propylene copolymers.
- the lubricating composition according to the invention can be in various forms.
- the lubricant composition according to the invention may in particular be an anhydrous composition.
- this lubricating composition is not an emulsion.
- the lubricant composition defined above is used to prevent or reduce preignition in an engine.
- Motor according to the invention more particularly means the vehicle engines, such as:
- the lubricant composition is used to prevent or reduce pre-ignition in a vehicle engine, preferably a motor vehicle.
- Pre-ignition according to the invention includes the phenomenon of low frequency vibration producing a sound effect of humming (or "Rumble" in English).
- pre-ignition according to the invention is more particularly meant the low speed pre-ignition (LSPI).
- LSPI low speed pre-ignition
- the lubricant composition is used to prevent or reduce low speed pre-ignition (LSPI) in an engine, preferably in a vehicle engine, preferably a motor vehicle.
- LSPI low speed pre-ignition
- the invention also relates to a method for preventing or reducing pre-ignition in an engine, said method comprising at least one step of contacting a mechanical part of the engine with a lubricant composition as defined above.
- the subject of the invention is also the use of a polyalkylene glycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, of which at least one butylene oxide in a lubricating composition comprising at least one base oil to prevent or reduce pre-ignition in an engine.
- PAG polyalkylene glycol
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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)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1557591A FR3039834B1 (fr) | 2015-08-06 | 2015-08-06 | Compositions lubrifiantes pour prevenir ou diminuer le pre-allumage dans un moteur |
| PCT/EP2016/068719 WO2017021521A1 (fr) | 2015-08-06 | 2016-08-05 | Compositions lubrifiantes pour prevenir ou diminuer le pre-allumage dans un moteur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3331974A1 true EP3331974A1 (fr) | 2018-06-13 |
| EP3331974B1 EP3331974B1 (fr) | 2021-04-14 |
Family
ID=54186199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16750763.1A Active EP3331974B1 (fr) | 2015-08-06 | 2016-08-05 | Utilisation des compositions lubrifiantes pour prevenir ou diminuer le pre-allumage dans un moteur |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20180223217A1 (fr) |
| EP (1) | EP3331974B1 (fr) |
| CN (1) | CN107922871A (fr) |
| FR (1) | FR3039834B1 (fr) |
| WO (1) | WO2017021521A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111448294B (zh) * | 2017-12-25 | 2022-11-18 | 陶氏环球技术有限责任公司 | 改性的油溶性聚亚烷基二醇 |
| FR3092335B1 (fr) | 2019-02-04 | 2021-04-30 | Total Marketing Services | Composition lubrifiante pour prévenir le pré-allumage |
| FR3092337B1 (fr) | 2019-02-04 | 2021-04-23 | Total Marketing Services | Composition lubrifiante pour prévenir le pré-allumage |
| FR3093110B1 (fr) | 2019-02-25 | 2021-05-21 | Total Marketing Services | Composition lubrifiante pour prévenir ou diminuer le pré-allumage dans un moteur |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3211652A (en) * | 1962-12-03 | 1965-10-12 | Ethyl Corp | Phenolic compositions |
| EP2456845B2 (fr) | 2009-07-23 | 2020-03-25 | Dow Global Technologies LLC | Polyalkylène glycols utiles comme additifs lubrifiants pour des huiles hydrocarbonées des groupes i-iv |
| FR2968011B1 (fr) * | 2010-11-26 | 2014-02-21 | Total Raffinage Marketing | Composition lubrifiante pour moteur |
| US20140303053A1 (en) * | 2011-11-01 | 2014-10-09 | Dow Global Technologies Llc | Oil soluble polyalkylene glycol lubricant compositions |
| FR2990213B1 (fr) | 2012-05-04 | 2015-04-24 | Total Raffinage Marketing | Composition lubrifiante pour moteur |
| WO2015023559A1 (fr) * | 2013-08-12 | 2015-02-19 | Shell Oil Company | Procédés pour modifier les propriétés d'auto-allumage d'une composition d'huile de base ou de lubrifiant |
| US11034912B2 (en) * | 2014-04-29 | 2021-06-15 | Infineum International Limited | Lubricating oil compositions |
| US9944877B2 (en) * | 2014-09-17 | 2018-04-17 | Exxonmobil Research And Engineering Company | Composition and method for preventing or reducing engine knock and pre-ignition in high compression spark ignition engines |
-
2015
- 2015-08-06 FR FR1557591A patent/FR3039834B1/fr not_active Expired - Fee Related
-
2016
- 2016-08-05 CN CN201680046018.2A patent/CN107922871A/zh active Pending
- 2016-08-05 WO PCT/EP2016/068719 patent/WO2017021521A1/fr not_active Ceased
- 2016-08-05 US US15/748,239 patent/US20180223217A1/en not_active Abandoned
- 2016-08-05 EP EP16750763.1A patent/EP3331974B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20180223217A1 (en) | 2018-08-09 |
| WO2017021521A1 (fr) | 2017-02-09 |
| EP3331974B1 (fr) | 2021-04-14 |
| FR3039834B1 (fr) | 2018-08-31 |
| FR3039834A1 (fr) | 2017-02-10 |
| CN107922871A (zh) | 2018-04-17 |
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