EP3684893A1 - Utilisation d'ester dans une composition lubrifiante pour améliorer la propreté moteur - Google Patents
Utilisation d'ester dans une composition lubrifiante pour améliorer la propreté moteurInfo
- Publication number
- EP3684893A1 EP3684893A1 EP18768908.8A EP18768908A EP3684893A1 EP 3684893 A1 EP3684893 A1 EP 3684893A1 EP 18768908 A EP18768908 A EP 18768908A EP 3684893 A1 EP3684893 A1 EP 3684893A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ester
- engine
- cleanliness
- weight
- esters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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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
- 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
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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
- 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
- C10M129/74—Esters of polyhydroxy compounds
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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
- 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
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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
- 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
- C10M129/72—Esters of polycarboxylic 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
- 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
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
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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
- 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
- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic 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
- C10M2207/283—Esters of polyhydroxy 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
- C10N2020/02—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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
-
- 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
- C10N2040/26—Two-strokes or two-cycle engines
Definitions
- ester in a lubricating composition to improve engine cleanliness
- the present invention relates to the use of esters in a lubricating composition for improving engine cleanliness, especially marine engines.
- the present invention also relates to a method for improving engine cleanliness, especially marine engines, comprising the implementation of a lubricant composition comprising esters.
- significant efforts are concentrated on the lubricant compositions to neutralize the sulfuric acid formed during the combustion of fuel oil which significantly reduces the corrosive wear of the engine parts.
- additives are used in lubricating compositions and can have adverse effects on the cleanliness of the engine parts, including the cleanliness of the housing. Indeed, when these additives are in contact with sulfuric acid and / or are subject to temperature and pressure constraints applied within the engine, they can partially or completely decompose and form deposits that clog said parts. As a result, the deposits formed induce an increase in wear and a rapid fouling of the engine parts, and therefore a faster decrease in the life of the engines.
- WO 2013/045648 discloses lubricant compositions for marine engine to reduce the consumption of fuel while improving engine cleanliness. These compositions comprise at least one base oil, at least one detergent, at least one copolymer olefin and at least one glycerol ester.
- a first object of the present invention relates to the use, in a lubricant composition comprising at least one base oil, of 2 to 12% by weight relative to the weight of the lubricating composition of an ester having a viscosity at 100. ° C between 200 and 1000 cSt, to improve the engine cleanliness, preferably the cleanliness crankcase.
- the improvement of the engine cleanliness is defined by the increase in the thermal stability of the lubricant, which then implies the reduction of the varnish on the engine parts.
- the thermal stability of the lubricant is determined by the ECBT test as described below. It should be understood that the improvement of the engine cleanliness is compared with what is observed in the absence, in the lubricating composition of the invention, of the esters according to the invention.
- the inventors have surprisingly shown that with less than 1% by weight of ester or more than 14% by weight of ester, the engine cleanliness was not improved.
- the ester is in a proportion of 2 to 1%, preferably 3 to 1%, more preferably 3 to 10%, even more preferably 4 to 10% by weight relative to the weight of the lubricating composition.
- the viscosity at 100 ° C. measured according to the ASTM D445 standard of the ester is between 200 and 900 cSt, preferably between 200 and 800, more preferably between 250 and 700 cSt.
- the esters of the present invention may be any type of ester obtained by reaction between an alcohol and an acid.
- the alcohol may be a monoalcohol or a polyhydric alcohol and the acid may be a monoacid or a polyacid.
- the esters may especially be chosen from mono-, di-, tri-, tetra- or pentaester.
- the alcohols are monoalcohols, dialcohols, trihydric alcohol or tetrahydric alcohol.
- the alcohol has a hydrocarbon chain comprising from 1 to 30 carbon atoms, more preferably comprising from 3 to 25 carbon atoms, even more preferentially from 3 to 18 carbon atoms.
- polyalcohol an alcohol carrying at least two hydroxyl functions, preferably comprising between 2 and 8 hydroxyl functions, more preferably between 2 and 6 hydroxyl functions, even more preferably between 2 and 4 hydroxyl functions.
- the polyalcohols are chosen from erythritol, trimethylolpropane and pentaerythritol, preferably trimethylolpropane or pentaerythritol.
- the polyalcohol is not glycerol.
- polyacid is meant an acid carrying at least 2 carboxylic acid functions, preferably comprising between 2 and 6 carboxylic acid functions, more preferably between 2 and 4 carboxylic acid functions.
- the acids are selected from acid anhydrides or fatty acids.
- the acid anhydrides are chosen from ethanoic anhydrides, propanoic anhydrides, maleic anhydrides, phthalic anhydrides, cis-1, 2,3,6-tetrahydrophthalic anhydrides and succinic anhydrides.
- the fatty acids comprise from 4 to 36 carbon atoms, preferably from 6 to 24 carbon atoms. These fatty acids can be saturated, mono and / or polyunsaturated.
- the fatty acids used for the reaction with alcohols for example are fatty acids derived from vegetable oil and can be saturated, mono and / or polyunsaturated.
- caprylic pelargonic, capric, undecylenic, lauric, tridecylenic, myristic, pentadecyl, palmitic, margaric, stearic, nonadecylic, arachic, henicosanoic, behenic, tricosanoic, lignoceric, pentacosanoic, cerotic, heptacosanoic, montanic, nonacosanoic, melissic, hentriacontanoic, laceroic, and their derivatives or unsaturated fatty acids such as palmitoleic, oleic, erucic, nervonic, linoleic, a-linolenic, c-linolenic, di-homo-c-linolenic, arachidonic, eicosapentaenoic acid , docosahexanoic
- the fatty acids are derived from the hydrolysis of triglycerides present in vegetable and animal oils, such as coconut oil, palm oil, olive oil, peanut oil, rapeseed oil, sunflower oil, soya oil, castor, wood, maize, squash, grape seed, jojoba, sesame, walnut, hazelnut, almond, shea, macadamia, alfalfa, rye, safflower, coconut , of cotton, flax, beef tallow, or any of their mixtures.
- vegetable oils such as coconut oil, palm oil, olive oil, peanut oil, rapeseed oil, sunflower oil, soya oil, castor, wood, maize, squash, grape seed, jojoba, sesame, walnut, hazelnut, almond, shea, macadamia, alfalfa, rye, safflower, coconut , of cotton, flax, beef tallow, or any of their mixtures.
- Natural oils may have been genetically modified to enrich their content of
- the carbon chain of the acid anhydrides or fatty acids may be functionalized by one or more selected groups among carboxylic acids, amides, ureas, urethanes, amines, polyisobutadienes or alcohols.
- esters according to the invention may be mixed esters, that is to say esters obtained by mixing different alcohols and / or different acids.
- esters according to the invention are preferably obtained by reaction between a monoalcohol or a polyalcohol as defined above and a monoacid or a polyacid as defined above.
- the ester according to the invention is not a glycerol ester.
- the lubricating composition further comprises at least one detergent.
- the detergents used in the lubricant compositions according to the present invention these are well known to those skilled in the art.
- the detergents commonly used in the formulation of lubricating compositions are typically anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
- the associated cation is typically a metal cation of an alkali or alkaline earth metal.
- the detergents are preferably chosen from alkali metal or alkaline earth metal salts of carboxylic acids, sulphonates, salicylates and naphthenates, as well as the salts of phenates.
- the alkaline and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
- metal salts may contain the metal in an approximately stoichiometric amount.
- neutral detergents typically have a BN (or Base Number in English, characterizing the basicity), measured according to ASTM D2896, less than 150 mg KO H / g, or less than 100, or even less than 80 mg KOH / g.
- neutral detergents can contribute in part to the BN lubricants according to the present invention.
- neutral detergents of carboxylates, sulphonates, salicylates, phenates, alkali metal and alkaline earth metal naphthenates, for example calcium, sodium, magnesium or barium will be used.
- the metal is in excess (in an amount greater than the stoichiometric amount), we are dealing with so-called overbased detergents.
- Their BN is high, higher than 150 mg KO H / g, typically between 200 and 700 mg KO H / g, generally between 250 and 450 mg KOH / g.
- the excess metal providing the overbased detergent character is in the form of oil insoluble metal salts, for example carbonate, hydroxide, oxalate, acetate, glutamate, preferably carbonate.
- the metals of these insoluble salts may be the same as those of the oil-soluble detergents or may be different. They are preferably selected from calcium, magnesium, sodium or barium.
- the overbased detergents are thus in the form of micelles composed of insoluble metal salts maintained in suspension in the lubricating composition by the detergents in the form of oil-soluble metal salts.
- These micelles may contain one or more types of insoluble metal salts, stabilized by one or more detergent types.
- Overbased detergents with a single type of detergent soluble metal salt will generally be named after the nature of the hydrophobic chain of the latter detergent.
- carboxylate phenate, salicylate, sulfonate, naphthenate depending on whether the detergent is a carboxylate, phenate, salicylate, sulfonate, or naphthenate, respectively.
- the overbased detergents will be said to be of mixed type if the micelles comprise several types of detergents, different from each other by the nature of their hydrophobic chain.
- the oil-soluble metal salts will preferably be carboxylates, phenates, sulphonates, salicylates, and mixed detergents phenate-sulphonate and / or salicylates of calcium, magnesium, sodium or barium.
- the insoluble metal salts providing the overbased character are alkali and alkaline earth metal carbonates, preferentially calcium carbonate.
- the overbased detergents used in the lubricating compositions according to the present invention are preferably carboxylates, phenates, sulphonates, salicylates and mixed detergents phenates-sulphonates-salicylates, overbased with calcium carbonate.
- the lubricating composition may further comprise detergents which may especially be chosen from:
- R 1 represents a saturated or unsaturated hydrocarbon group, linear or branched, comprising at least 12 carbon atoms, and optionally at least one heteroatom selected from nitrogen, sulfur or oxygen,
- R 2 , R 4 or R 5 independently represents a hydrogen atom or a saturated or unsaturated hydrocarbon group, linear or branched, and optionally comprising at least one heteroatom chosen from nitrogen, sulfur or oxygen,
- R 3 represents a saturated or unsaturated hydrocarbon group, linear or branched, comprising one or more carbon atom (s), and optionally comprising at least one heteroatom selected from nitrogen, sulfur or oxygen, preferably oxygen,
- M is an integer greater than or equal to 1, preferably between 1 and 10, more preferably between 1 and 6, even more preferably is chosen from 1, 2 or 3, or
- R identical or different, represents a linear or branched alkyl group comprising from 8 to 22 carbon atoms
- ⁇ N and z independently of one another, represent 0, 1, 2 or 3, and
- said mixture comprising at least 3% by weight of branched compounds such that at least one of n or z is greater than or equal to 1, or of their derivatives, or
- fatty amines of formula (I) included in the lubricant composition are described in particular in applications WO 2009/153453 and WO 2014/180843 filed by the applicant.
- the fatty amine of formula (I) or the mixture of fatty amines of formulas (III) and / or (IV) or the mixture of fatty amines of formulas (I) (III) and / or (IV) is added in an amount of 0.1 to 15%, preferably 0.5 to 10%, preferably 0.5 to 8% or 3 to 10% by weight. relative to the total weight of the lubricating composition.
- fatty amine according to the invention is understood to mean an amine of formula (I), (III) or (IV) comprising one or more hydrocarbon groups, saturated or unsaturated, linear or branched, and optionally comprising at least one chosen heteroatom. from nitrogen, sulfur or oxygen, preferably oxygen.
- severe fatty amines according to the invention is meant a mixture of fatty amines of which at least one fatty amine is of formulas (I), (III) and / or (IV).
- the fatty amines of formula (I), (III) or (IV) are in particular as described in WO2017021426.
- the present invention relates to the improvement of cleanliness, marine engine, including marine engine 2-stroke or 4-stroke. More particularly the invention relates to improving the cleanliness of marine engine 2-stroke, including crankcase cleanliness.
- the lubricant composition is used in particular as a cylinder oil or system oil, preferably as a cylinder oil.
- the base oil included in the lubricating composition is selected from oils of mineral, synthetic or vegetable origin and mixtures thereof.
- the mineral or synthetic oils generally used in the application belong to one of the classes defined in the API classification as summarized in the table below.
- the Group 1 mineral oils can be obtained by distillation of selected naphthenic or paraffinic crudes and then purification of these distillates by processes such as solvent extraction, solvent or catalytic dewaxing, hydrotreating or hydrogenation.
- the oils of Groups 2 and 3 are obtained by more severe purification methods, for example a combination among hydrotreatment, hydrocracking, hydrogenation and catalytic dewaxing.
- Examples of Group 4 and 5 synthetic bases include poly-alpha olefins, polybutenes, polyisobutenes, alkylbenzenes.
- base oils can be used alone or as a mixture.
- a mineral oil can be combined with a synthetic oil.
- Cylinder oils for 2-stroke marine diesel engines have a SAE-40 SAE-40 viscometric grade, typically SAE-50 equivalent to a kinematic viscosity at 100 ° C of between 16.3 and 21.9 mm 2 / s.
- Grade 40 oils have a kinematic viscosity at 100 ° C of between 12.5 and 16.3 mm 2 / s.
- Grade 50 oils have a kinematic viscosity at 100 ° C of between 16.3 and 21.9 mm 2 / s.
- Grade 60 oils have a kinematic viscosity at 100 ° C of between 21, 9 and 26.1 V.
- This viscosity can be obtained by mixing additives and base oils, for example containing Group 1 mineral bases such as Neutral Solvent (for example 500NS or 600 NS) and Brightstock bases. Any other combination of mineral, synthetic or vegetable bases having, in admixture with the additives, a viscosity compatible with the grade SAE-50 may be used.
- Group 1 mineral bases such as Neutral Solvent (for example 500NS or 600 NS) and Brightstock bases.
- Neutral Solvent for example 500NS or 600 NS
- Brightstock bases for example 500NS or 600 NS
- Any other combination of mineral, synthetic or vegetable bases having, in admixture with the additives, a viscosity compatible with the grade SAE-50 may be used.
- a conventional cylinder lubricant formulation for slow 2-cycle marine diesel engines is SAE 40 to SAE60, preferably SAE50 (SA37 J300) and includes at least 50% by weight of original lubricating base oil.
- mineral and / or synthetic, suitable for use in a marine engine for example of API Group 1, that is to say obtained by distillation of selected crudes and purification of these distillates by processes such as solvent extraction , solvent or catalytic dewaxing, hydrotreatment or hydrogenation.
- Their Viscosity Index (VI) is between 80 and 120; their sulfur content is greater than 0.03% and their saturated content is less than 90%.
- the lubricant composition may further comprise one or more thickening additives whose role is to increase the viscosity of the composition, hot or cold, or by improving additives of index viscosity (VI).
- thickening additives whose role is to increase the viscosity of the composition, hot or cold, or by improving additives of index viscosity (VI).
- these additives are most often polymers of low molecular weight, of the order of 2000 to 50 000 dalton (Mn). They may be chosen from PIBs (of the order of 2000 daltons), polyacrylate or poly methacrylates (in the order of 30000 daltons), olefin-copolymers, olefin and alpha olefin copolymers, EPDM, Polybutenes, poly-alphaolefins with a high molecular weight (viscosity 100 ° C.> 150), styrene-olefin copolymers, hydrogenated or otherwise.
- PIBs of the order of 2000 daltons
- polyacrylate or poly methacrylates in the order of 30000 daltons
- olefin-copolymers olefin and alpha olefin copolymers
- EPDM Polybutenes
- poly-alphaolefins with a high molecular weight viscosity 100
- the base oil (s) included in the lubricating composition according to the invention may be partially or totally substituted by these additives.
- the polymers used to partially or totally substitute one or more of the base oils are preferably the aforementioned thickeners of the PIB type (for example marketed under the name Indopol H2100).
- the lubricating composition may further comprise at least one antiwear additive.
- the anti-wear additive is zinc di thiophosphate or DTPZn.
- This category also contains various phosphorus, sulfur, nitrogen, chlorine and boron compounds.
- phospho-sulfur-containing additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or DTPZn.
- Amine phosphates, polysulfides, especially sulfur-containing olefins are also commonly used antiwear additives.
- Lubricant compositions are also usually encountered with antiwear and extreme pressure additives of the nitrogen and sulfur type, such as, for example, metal dithiocarbamates, in particular molybdenum dithiocarbamate.
- Glycerol esters are also anti-wear additives. Mention may be made, for example, of mono, di and trioleates, monopalmitates and monomyristates.
- the lubricating composition may further comprise at least one dispersant.
- Dispersants are well known additives used in the formulation of lubricating composition, especially for application in the marine field. Their primary role is to maintain in suspension the particles present initially or appearing in the lubricant composition during its use in the engine. They prevent their agglomeration by playing on steric hindrance. They can also have a synergistic effect on the neutralization.
- the dispersants used as lubricant additives typically contain a polar group, associated with a relatively long hydrocarbon chain, generally containing from 50 to 400 carbon atoms. The polar group typically contains at least one nitrogen, oxygen or phosphorus element.
- the compounds derived from succinic acid are dispersants particularly used as lubrication additives.
- succinimides obtained by condensation of succinic anhydrides and amines
- succinic esters obtained by condensation are used in particular.
- These compounds can then be treated with various compounds including sulfur, oxygen, formaldehyde, carboxylic acids and compounds containing boron or zinc to produce, for example, borated succinimides or zinc-blocked succinimides.
- Mannich bases obtained by polycondensation of phenols substituted with alkyl groups, formaldehyde and primary or secondary amines, are also compounds used as dispersants in lubricants. It is possible to use a dispersant in the family of succinimide PIBs, for example borated or blocked with zinc.
- the lubricating composition may furthermore comprise all types of functional additives adapted to their use, for example anti-foam additives to counteract the effect of detergents, which may be, for example, polar polymers such as polymethylsiloxanes, polyacrylates, anti-oxidant and / or anti-rust additives, for example metal organo-detergents or thiadiazoles. These are known to those skilled in the art.
- compositions of the lubricants described refer to the compounds taken separately before mixing, it being understood that said compounds may or may not retain the same chemical form before and after mixing.
- the lubricants according to the present invention obtained by mixing the compounds taken separately are not in the form of emulsion or microemulsion.
- the base oil of the composition according to the invention is a Group 2 base oil.
- the subject of the present invention is also the use of a lubricating composition comprising at least one base oil and from 2 to 12% by weight relative to the weight of the lubricating composition of an ester compound having a viscosity at 100 ° C. measured according to ASTM D445 between 100 and 1000 cSt to improve engine cleanliness.
- the amounts of ester, the esters, the base oil and the lubricating composition and its possible additives are as defined above.
- the present invention also relates to a lubricant composition
- a lubricant composition comprising at least one base oil and from 2 to 12% by weight relative to the weight of the lubricating composition of an ester having a viscosity at 100 ° C. measured according to ASTM D445 between 100 and 1000 cSt to improve engine cleanliness.
- Quantities of ester, the esters, the base oil and the lubricating composition and its possible additives are as defined above.
- esters of Table 1 were used in the lubricant compositions tested below.
- compositions (Cl: composition according to the invention and CC: comparative composition) were prepared:
- the viscosity at 40 ° C is measured according to ASTM D7279.
- Viscosity at 100 ° C is measured according to ASTM D7279.
- the VI corresponds to the viscosity index and is calculated according to the NF ISO 2909 standard.
- the BN corresponds to the Base Number measured according to the ASTM standard
- compositions according to the invention have good thermal resistance and thus make it possible to improve engine cleanliness.
- Table 4 As regards the measurement of the quotation at 280 ° C, if the surface is without varnish then the quotation is 100. In other words, the lower the quotation, the more the surface presents the varnish.
- the critical temperature is the temperature at which the surface has a rating of 50.
- esters having a viscosity according to the invention advantageously make it possible to improve engine cleanliness compared with lubricating compositions free of such esters and with respect to lubricating compositions comprising esters of different viscosity.
- the varnish rating is much closer to 100 for the esters according to the invention.
- the critical temperature is much higher for the esters 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)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1758648A FR3071252B1 (fr) | 2017-09-19 | 2017-09-19 | Utilisation d'ester dans une composition lubrifiante pour ameliorer la proprete moteur |
| PCT/EP2018/075223 WO2019057718A1 (fr) | 2017-09-19 | 2018-09-18 | Utilisation d'ester dans une composition lubrifiante pour améliorer la propreté moteur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3684893A1 true EP3684893A1 (fr) | 2020-07-29 |
| EP3684893B1 EP3684893B1 (fr) | 2024-11-06 |
Family
ID=60627783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18768908.8A Active EP3684893B1 (fr) | 2017-09-19 | 2018-09-18 | Utilisation d'ester dans une composition lubrifiante pour améliorer la propreté moteur |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US11136521B2 (fr) |
| EP (1) | EP3684893B1 (fr) |
| JP (2) | JP2020534404A (fr) |
| CN (1) | CN111133083A (fr) |
| DK (1) | DK3684893T3 (fr) |
| ES (1) | ES3002734T3 (fr) |
| FR (1) | FR3071252B1 (fr) |
| SG (1) | SG11202002373TA (fr) |
| WO (1) | WO2019057718A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3164220A1 (fr) * | 2024-07-05 | 2026-01-09 | Totalenergies Onetech | Utilisation d’esters pour l’amélioration de la propreté de moteurs marins |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3390083A (en) * | 1965-05-11 | 1968-06-25 | Exxon Research Engineering Co | Polyester additives for hydrocarbon oil compositions and process of preparing the same |
| FR2144559B1 (fr) * | 1971-07-05 | 1974-09-06 | Inst Francais Du Petrole | |
| US5942475A (en) * | 1996-09-06 | 1999-08-24 | Exxon Chemical Patents Inc. | Engine oil lubricants formed from complex alcohol esters |
| US6573224B2 (en) * | 1997-01-03 | 2003-06-03 | Bardahl Manufacturing Corporation | Two-cycle engine lubricant composition comprising an ester copolymer and a diester |
| DE69816843T2 (de) * | 1997-10-01 | 2004-04-15 | Unichema Chemie B.V. | Komplexaster, diese enthaltende zusammensetzungen und ihre verwendung |
| US6844299B2 (en) | 2002-03-13 | 2005-01-18 | Bp Corporation North America Inc. | Polyol ester derivatives of polyamines and use in turbine oils to improve cleanliness |
| GB0404535D0 (en) * | 2004-03-01 | 2004-03-31 | Ici Plc | Antiwear automotive formulations |
| US8703677B2 (en) * | 2007-12-21 | 2014-04-22 | Chevron Japan Ltd | Lubricating oil compositions for internal combustion engines |
| FR2932813B1 (fr) | 2008-06-18 | 2010-09-03 | Total France | Lubrifiant cylindre pour moteur marin deux temps |
| KR101659099B1 (ko) * | 2008-07-31 | 2016-09-22 | 더루우브리졸코오포레이션 | 신규 공중합체 및 이의 윤활 조성물 |
| FR2974111B1 (fr) * | 2011-04-14 | 2013-05-10 | Total Raffinage Marketing | Lubrifiant cylindre pour moteur marin deux temps |
| FR2980799B1 (fr) | 2011-09-29 | 2013-10-04 | Total Raffinage Marketing | Composition lubrifiante pour moteur marin |
| CN104220570A (zh) * | 2012-02-17 | 2014-12-17 | 卢布里佐尔公司 | 用于传动系统应用的包含酯化共聚物和低分散剂含量的润滑组合物 |
| FR3005474B1 (fr) | 2013-05-07 | 2016-09-09 | Total Raffinage Marketing | Lubrifiant pour moteur marin |
| FR3039835B1 (fr) | 2015-08-03 | 2019-07-05 | Total Marketing Services | Utilisation d'une amine grasse pour prevenir et/ou reduire les pertes metalliques des pieces dans un moteur |
-
2017
- 2017-09-19 FR FR1758648A patent/FR3071252B1/fr active Active
-
2018
- 2018-09-18 CN CN201880060009.8A patent/CN111133083A/zh active Pending
- 2018-09-18 ES ES18768908T patent/ES3002734T3/es active Active
- 2018-09-18 WO PCT/EP2018/075223 patent/WO2019057718A1/fr not_active Ceased
- 2018-09-18 JP JP2020515869A patent/JP2020534404A/ja not_active Ceased
- 2018-09-18 US US16/646,229 patent/US11136521B2/en active Active
- 2018-09-18 EP EP18768908.8A patent/EP3684893B1/fr active Active
- 2018-09-18 DK DK18768908.8T patent/DK3684893T3/da active
- 2018-09-18 SG SG11202002373TA patent/SG11202002373TA/en unknown
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2023
- 2023-10-13 JP JP2023177522A patent/JP2023174812A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3071252A1 (fr) | 2019-03-22 |
| DK3684893T3 (da) | 2025-01-02 |
| ES3002734T3 (en) | 2025-03-07 |
| JP2020534404A (ja) | 2020-11-26 |
| JP2023174812A (ja) | 2023-12-08 |
| EP3684893B1 (fr) | 2024-11-06 |
| CN111133083A (zh) | 2020-05-08 |
| US20200270542A1 (en) | 2020-08-27 |
| US11136521B2 (en) | 2021-10-05 |
| FR3071252B1 (fr) | 2020-04-03 |
| SG11202002373TA (en) | 2020-04-29 |
| WO2019057718A1 (fr) | 2019-03-28 |
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