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
  • 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
  • C10M169/041—Mixtures of base-materials and additives the additives being macromolecular compounds only
• • 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
  • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
  • C10M125/14—Water
• • 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
  • C10M145/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C10M145/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
  • C10M145/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate monocarboxylic
  • C10M145/14—Acrylate; Methacrylate
• • 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
  • C10M145/22—Polyesters
• • 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
  • C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/722—Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/02—Water
• • 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
  • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
  • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
  • C10M2203/102—Aliphatic fractions
  • C10M2203/1025—Aliphatic fractions 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
  • 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
  • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
  • C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/02—Hydroxy compounds
• • 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
  • C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
• • 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
  • C10M2207/10—Carboxylix acids; Neutral salts thereof
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/26—Overbased carboxylic acid salts
  • C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
• • 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
  • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
  • C10M2209/084—Acrylate; Methacrylate
• • 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
• • 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
  • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
  • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
  • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
  • C10M2215/064—Di- and triaryl amines
• • 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
  • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
  • C10M2215/28—Amides; Imides
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
  • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
  • C10M2219/066—Thiocarbamic type compounds
  • C10M2219/068—Thiocarbamate metal salts
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
  • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
  • C10M2223/04—Phosphate esters
  • C10M2223/045—Metal containing thio derivatives
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
  • C10M2229/02—Unspecified siloxanes; Silicones
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2010/00—Metal present as such or in compounds
  • C10N2010/04—Groups 2 or 12
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2010/00—Metal present as such or in compounds
  • C10N2010/12—Groups 6 or 16
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
  • C10N2030/04—Detergent property or dispersant property
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
  • C10N2030/08—Resistance to extreme temperature
• • 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
  • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
  • C10N2030/24—Emulsion properties
• • 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
  • C10N2040/252—Diesel engines
  • C10N2040/253—Small diesel engines

Definitions

• the invention relates to the field of lubricants and provides a lubricating composition comprising a base oil, a surfactant system and a phase change material, especially water.
• the lubricant composition according to the invention is used for the lubrication of a vehicle engine. It has improved thermal performance compared to the lubricant compositions of the state of the art. It also reduces clogging of engine parts.
• the conditions of use of gasoline engines and diesel engines include extremely short journeys as well as long journeys. In fact, 80% of the journeys of Western European cars are less than 12 kilometers while vehicles cover annual mileages of up to 300 000 km.
• the emptying intervals are also very variable, from 5,000 km for some small diesel engines to up to 100,000 km on modern commercial diesel engines.
• Lubricating compositions and especially lubricating compositions for motor vehicles must therefore have improved properties and performance.
• a problem encountered when using known lubricating compositions is the degradation and coking of the oils or additives used. These phenomena of degradation and coking can lead to fouling of the lubricated parts, in particular within a vehicle engine.
• a problem encountered when using known lubricating compositions is the degradation and coking of the oils or additives used. These phenomena of degradation and coking can lead to fouling of the lubricated parts, in particular within a vehicle engine.
• lubricating compositions for improving the cleanliness of an engine. Improving the cleanliness of an engine generally involves reducing the formation of deposits, including the formation of high temperature deposits such as varnishes, lacquers or deposits of carbon or coke. Such deposits may be formed on the hot surfaces of the engine parts such as throat bottoms of the pistons or the axes of the turbos.
• the substances present in the lubricating compositions can oxidize in contact with the hot surfaces of the engine and generate the formation of insoluble products forming deposits. These deposits can foul the engine and cause problems of wear, seizing, scrubbing segments and turbo rotation problems for example.
• detergent type additives are used to improve the cleanliness of an engine.
• lubricating compositions for reducing the temperature of the epilamen film or skin of lubricating composition
• Lubricating compositions that make it possible to absorb a portion of the heat produced during the operation of an engine are therefore necessary.
• phase change material in combination with an oil and a surfactant system can absorb some of the heat produced during lubrication, particularly during an engine, and therefore lower the temperature experienced by the oil and the additives used.
• the stability of the lubricating compositions must also be ensured, in particular when they are used for lubricating an engine. Indeed, besides the heat Engine lubricating compositions undergo significant mechanical stresses, in particular shear stresses.
• oils and additives of the lubricating compositions can separate or degrade and lose all or part of their properties.
• lubricating compositions comprising different phases, for example emulsions, can be degraded and lead to the separation of oils and additives.
• certain elements or additives may be deposited, for example in the lower parts of the engine.
• Lubricating compositions thus degraded can lose their properties and lead to accelerated degradation of the oils and additives and lead to increased fouling of the engine parts.
• the invention provides a lubricating composition that provides a solution to all or part of the problems of the lubricant compositions of the state of the art.
• the present invention relates to the use of a monophasic lubricating composition comprising
• At least one nonionic surfactant derivative of fatty alcohols or
• phase change material ⁇ up to 5% by weight of a phase change material.
• the composition is monophasic, this is reflected in the composition by a low content of phase change material, especially water, which is 5% by weight at most. It therefore comprises a single phase and is different from an emulsion.
• the monophasic lubricating composition according to the invention can undergo constraints mechanical, including shear stresses, without risk of separation of the oil, the surfactant system and the phase change material.
• the lubricating composition according to the invention comprises a surfactant system comprising at least one polyalkoxylated fatty alcohol derivative comprising a saturated or unsaturated, linear or branched C 12 -C 60 -alkyl group.
• the lubricating composition according to the invention comprises a surfactant system comprising at least one derivative chosen from
• derivatives of polyalkoxylated fatty alcohols in particular polyethoxylated fatty alcohols, comprising a linear or branched, saturated or unsaturated C 1 -C 6 o -alkyl group, for example derivatives of polyalkoxylated fatty alcohols, in particular polyethoxylated alcohols, comprising a Ci 6 - group;
• Linear or branched saturated C 6 -alkyl for example derivatives of polyalkoxylated fatty alcohols, in particular polyethoxylated fatty alcohols, comprising a linear or branched C 6 -C 6 o-alkyl unsaturated group;
• a fatty alcohol alkoxylate in particular a fatty alcohol ethoxylate, especially a fatty alcohol ethoxylate ⁇ C 2 -C 30, in particular a fatty alcohol ethoxylate C 16 ⁇ C 24, preferably an ethoxylate fatty alcohol in C 18 ⁇ C 24 ;
• ⁇ a derivative of an oleyl alcohol C 16 -C 18 groups comprising C 16 -C 18 saturated, unsaturated groups 18 C and 2 to 5 alkoxy groups, particularly ethoxy groups.
• the lubricant composition according to the invention comprises a surfactant system comprising a mixture of at least two nonionic surfactant derivatives of fatty alcohol.
• the nonionic surfactant derivatives of fatty alcohol may then be chosen from polyalkoxylated fatty alcohol derivatives comprising a linear or branched, saturated or unsaturated C 1 -C 60 -alkyl group. They can also be selected from
• derivatives of polyalkoxylated fatty alcohols comprising an array Ci 2 -C 60 saturated alkyl or unsaturated, linear or branched, e.g. derivatives of polyalkoxylated fatty alcohols, in particular polyethoxylated fatty acids, comprising a linear or branched, saturated C 16 -C 60 -alkyl group, for example derivatives of polyalkoxylated fatty alcohols, in particular polyethoxylated fatty alcohols, comprising a C 16 -C 60 unsaturated alkyl group; linear or branched;
• a fatty alcohol alkoxylate in particular a fatty alcohol ethoxylate, especially a fatty alcohol ethoxylate C 12 -C 30, in particular a fatty alcohol ethoxylate C 16 -C 2 4, preferably a fatty alcohol ethoxylate C 18 -C 2 4;
• ⁇ a derivative of an oleyl alcohol -C 6 -C 8 comprising groups Ci 6 -C 8 saturated, unsaturated groups Ci 8 and 2 to 5 alkoxy groups, particularly ethoxy groups.
• the lubricating composition according to the invention comprises a surfactant system comprising a mixture
• a fatty alcohol alkoxylate in particular a fatty alcohol ethoxylate, in particular a C 12 -C 30 fatty alcohol ethoxylate, in particular a C 16 -C 24 fatty alcohol ethoxylate, preferably a C 18 -C 24 fatty alcohol ethoxylate; and (b) a derivative of oleic alcohol C 16 -C 18 groups comprising C 16 - C 18 saturated, unsaturated groups 18 C and 2 to 5 alkoxy groups, particularly ethoxy groups.
• the lubricant composition according to the invention comprises a phase change material.
• the phase change material is a liquid-gas phase change material.
• the phase change material has a vaporization enthalpy or a latent heat of vaporization, measured at 100 ° C and under 0.101 MPa, ranging from 800 to 3500 kJ / kg, preferably from 1000 to 2 500 kJ / kg.
• phase change material has a vaporization enthalpy of 2257 kJ / kg measured at 100 ° C and 0.101 MPa.
• the phase change material has a boiling point at normal pressure of 50 to 150 ° C, preferably 90 to 120 ° C.
• phase change material it is preferred to use a material chosen from water, carboxylic acids, ethers, alcohols, especially short chain alcohols and particularly C 1 -C 8 alcohols.
• the preferred phase change material is water.
• the lubricating composition according to the invention can comprise up to 1.7%, up to 1.8%, up to 2% or up to 3% by weight of lubricating composition of phase.
• Proportions of phase change material within the lubricating composition according to the invention may be from 0.1 to 5%, from 0.1 to 3%, from 0.1 to 2%, from 0.1 to 1%. , 8%, from 0.1 to 1.7%, from 0.1 to 1.5%, from 0.1 to 1.2% or from 0.1 to 1% by weight of lubricating composition of material to be changed phase. They may also be 0.2 to 5%, 0.2 to 3%, 0.2 to 2%, 0.2 to 1.8%, 0.2 to 1.7%, , 2 to 1.5%, 0.2 to 1.2% or 0.2 to 1% by weight of lubricant composition of phase change material. Or else be 0.5 to 5%, 0.5 to 3%, 0.5 to 2%, 0.5 to 1.8%, 0.5 to 1.7%, 0, 5 to 1.5%, 0.5 to 1.2% or 0.5 to 1% by weight of lubricant composition of phase change material.
• the lubricating composition according to the invention can therefore comprise up to 5% by weight of water. It may also comprise up to 1.7%, up to 1.8%, up to 2% or up to 3% by weight of water lubricating composition. Water proportions within the lubricating composition according to the invention may be from 0.1 to 5%, from 0.1 to 3%, from 0.1 to 2%, from 0.1 to 1.8%. 0.1 to 1.7%, 0.1 to 1.5%, 0.1 to 1.2% or 0.1 to 1% by weight of water lubricating composition.
• They may also be 0.2 to 5%, 0.2 to 3%, 0.2 to 2%, 0.2 to 1.8%, 0.2 to 1.7%, , 2 to 1.5%, 0.2 to 1.2% or 0.2 to 1% by weight of water lubricating composition. Or else be 0.5 to 5%, 0.5 to 3%, 0.5 to 2%, 0.5 to 1.8%, 0.5 to 1.7%, 0, 5 to 1.5%, 0.5 to 1.2% or 0.5 to 1% by weight of water lubricating composition.
• the lubricant composition according to the invention may comprise from 1 to 30% by total weight of lubricating composition of a mixture of phase change material and surfactant system.
• the lubricating composition according to the invention may comprise from 2 to 20% by total weight of lubricating composition of mixture of phase change material and surfactant system. More preferably, the lubricating composition according to the invention may comprise from 5 to 15% by total weight of lubricant composition of mixture of phase change material and surfactant system.
• the lubricant composition according to the invention comprises a particular surfactant system and a phase change material. It also includes a base oil.
• the lubricating composition according to the invention may comprise any type of mineral lubricating base stock, synthetic or natural, animal or vegetable adapted to its use.
• the base oils used in the lubricant compositions according to the invention can therefore 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 that can be used for the lubricating composition according to the invention include all types of bases obtained by atmospheric distillation and vacuum of crude oil, followed by refining operations such as solvent extraction, desalting, dewaxing with solvent, hydrotreatment, hydrocracking, hydroisomerization and hydrofinishing. Mixtures of synthetic and mineral oils can also be used.
• the base oils of the lubricating compositions according to the invention may also be chosen from synthetic oils, such as certain carboxylic acid esters and alcohols, as well as from polyalphaolefins.
• the polyalphaolefins used as base oils are, for example, obtained from monomers comprising from 4 to 32 carbon atoms, for example from octene or decene, and whose viscosity at 100 ° C. is between 1, 5 and 15 mm 2 .
• s "1 according to the ASTM D445 standard their average molecular mass is generally between 250 and 3000 according to the ASTM D5296 standard.
• the base oil can be chosen from Group III oils, Group IV oils and Group V oils.
• the lubricating composition according to the invention may also comprise another base oil.
• This other base oil can be selected from Group III oils, Group IV oils and Group V oils.
• the lubricating composition according to the invention comprises at least 50% by weight of base oil relative to the total mass of the composition. More advantageously, the lubricant composition according to the invention comprises at least 60% by weight, or even at least 70% by weight, of base oil relative to the total mass of the composition. More particularly advantageously, the lubricant composition according to the invention comprises from 50, 60 or 70 to 99.9% by weight, or 50, 60 or 70 to 90% by weight, of one or more base oils per relative to the total mass of the composition.
• the lubricating composition according to the invention may also comprise at least one additive. Many additives can be used for the lubricant composition according to the invention.
• the preferred additives for the lubricant composition according to the invention are chosen from detergent additives, anti-wear additives, friction modifying additives, extreme pressure additives, dispersants, pour point improvers, anti-wear agents and anti-wear agents. foam, thickeners and mixtures thereof. So preferred, the lubricating composition according to the invention comprises at least one antiwear additive, at least one extreme pressure additive or mixtures thereof. 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 1 ) (OR 2 )) 2 , in which R 1 and R 2 , 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.
• these effects can be minimized by partially substituting amine phosphates with 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, anti-wear 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 in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, diphenylamines substituted by at least one C 12 -C 12 alkyl group, ⁇ , ⁇ ' 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 aromatic amines, for example aromatic amines of formula NR a R b R c wherein R a represents an optionally substituted aliphatic or aromatic group, R b represents an aromatic group, optionally substituted, R c represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R d S (O) z R e in which R d represents an alkylene group or an alkenylene group, R e represents an alkyl group, an alkenyl group or an aryl group and z represents 0, 1 or 2.
• Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
• antioxidant additives 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 may be used in the lubricant composition according to the invention may be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
• the associated cation may be a metal cation of an alkali 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. These metal salts generally comprise the metal in stoichiometric amount or in excess, therefore in an amount greater than the stoichiometric amount.
• 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 .
• 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.
• pour point depressant additives 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 may also comprise at least one additional polymer improving the viscosity index.
• additional viscosity index improving polymers there may be mentioned polymeric esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, styrene, butadiene and isoprene, polymethacrylates (PMA).
• the lubricating composition according to the invention may comprise from 1 to 15% by weight relative to the total weight of the additional viscosity index improving lubricant composition.
• the lubricating composition according to the invention may be prepared according to a process (A) comprising
• a surfactant system comprising at least one nonionic surfactant derivative of fatty alcohols or a mixture of at least two surfactant derivatives nonionic fatty alcohols or a condensate of at least two nonionic surfactant derivatives of fatty alcohols or a combination thereof, and o a phase change material;
• the lubricating composition of the invention may be prepared according to a process (B) comprising
• a surfactant system comprising at least one nonionic surfactant derivative of fatty alcohols or a mixture of at least two nonionic surfactant derivatives of fatty alcohols or a condensate of at least two surfactant derivatives; nonionic fatty alcohol actives or a combination thereof, and o a phase change material;
• the lubricating composition of the invention may be prepared according to a process (C) comprising
• a surfactant system comprising at least one nonionic surfactant derivative of fatty alcohols or a mixture of at least two nonionic surfactant derivatives of fatty alcohols or a condensate of at least two surfactant derivatives; nonionic fatty alcohol actives or a combination thereof, and o a base oil;
• the lubricating composition according to the invention may be prepared according to a process (D) comprising
• a surfactant system comprising at least one nonionic surfactant derivative of fatty alcohols or a mixture of at least two nonionic surfactant derivatives of fatty alcohols or a condensate of at least two surfactant derivatives; nonionic fatty alcohol actives or a combination thereof, and o a base oil;
• the process (A) according to the invention comprises
• a surfactant system comprising at least one nonionic surfactant derivative of fatty alcohols or a mixture of at least two nonionic surfactant derivatives of fatty alcohols or a condensate of at least two surfactant derivatives; nonionic fatty alcohol actives or a combination thereof, and o a phase change material;
• the process (B) according to the invention comprises
• a surfactant system comprising at least one nonionic surfactant derivative of fatty alcohols or a mixture of at least two nonionic surfactant derivatives of fatty alcohols or a condensate of at least two surfactant derivatives; nonionic fatty alcohol actives or a combination thereof, and o a phase change material;
• process (C) according to the invention comprises
• a surfactant system comprising at least one nonionic surfactant derivative of fatty alcohols or a mixture of at least two nonionic surfactant derivatives of fatty alcohols or a condensate of at least two surfactant derivatives; nonionic fatty alcohol actives or a combination thereof, and o a base oil;
• the process (D) according to the invention comprises
• a surfactant system comprising at least one nonionic surfactant derivative of fatty alcohols or a mixture of at least two nonionic surfactant derivatives of fatty alcohols or a condensate of at least two surfactant derivatives; nonionic fatty alcohol actives or a combination thereof, and o a base oil;
• the lubricant composition of the invention is particularly advantageous for the lubrication of mechanical parts undergoing significant heating, hence its use for engine lubrication. It can in particular be used for the lubrication of automobile engines.
• the lubricant composition according to the invention is therefore brought into contact with at least one of the engine parts.
• a lubricant composition according to the invention makes it possible to reduce engine fouling. It can also reduce the amount of coking products within the engine.
• This use of a lubricant composition according to the invention is therefore particularly advantageous for improving the cleanliness of the engine, in particular to improve the cleanliness of the engine pistons.
• the invention also relates to the use of a phase change material defined according to the invention as a thermal agent in a lubricant composition for an engine.
• a phase change material defined according to the invention as a thermal agent in a lubricant composition for an engine.
• the use as a thermal agent in a lubricant composition of a phase change material according to the invention is also part of the invention.
• the invention also relates to the use of a mixture or solution of a surfactant system defined according to the invention and of a phase-change material, defined according to the invention, as a thermal agent within a lubricating composition for an engine or as a thermal agent in a lubricant composition defined according to the invention.
• Example 1 Preparation of Monophasic Lubricating Compositions According to the Invention Comprising a Base Oil (1)
• Three single-phase lubricating compositions according to the invention are prepared according to the method of the invention.
• a solution is prepared by adding two surfactant compounds with a base oil.
• this solution is mixed in water.
• Surfactant compounds are known products.
• Emulsogen MTP070 nonionic emulsifying agent comprising a fatty alcohol of plant origin - Clariant company
• Viscosogen MTP070 nonionic emulsifying agent comprising a fatty alcohol of plant origin - Clariant company
• Viscosogen MTP070 nonionic emulsifying agent comprising a fatty alcohol of plant origin - Clariant company
• Genapol O 020 CAS 68920-66-1, polyethoxylated oleic alcohol
• density measured at 50 ° C according to DIN 51757 of 0.88 g / cm 3 dynamic viscosity measured at 50 ° C according to DIN 53015 standard of 12 mPa.s, pour point measured according to DIN ISO 3016 of 1 1, 7 ° C).
• the base oil (1) is a PAO Group IV oil (Yubase 4+ product - SK company).
• compositions according to the invention are prepared according to the proportions (% by weight) presented in Table (1).
• compositions according to the invention are evaluated and makes it possible to show that they are stable at ambient temperature and that they do not have separate phases that can be distinguished visually.
• Two single-phase lubricating compositions according to the invention are prepared analogously to the monophasic lubricating composition of Example 1 and replacing the base oil (1) with an additive base oil (2).
• compositions according to the invention are prepared according to the proportions (% by weight) presented in Table (2).
• Three monophasic lubricating compositions according to the invention are prepared analogously to the single-phase lubricating composition of Example 2 and replacing the base oil (2) additive with an additive base oil (3).
• compositions according to the invention are prepared according to the proportions (% by weight) presented in Table (3).
• composition (6) Composition (7)
• compositions according to the invention are evaluated and makes it possible to show that they are stable at ambient temperature and that they do not have separate phases that can be distinguished visually.
• a comparative composition (1) according to Example 1 is prepared. This comparative composition does not include water.
• It comprises base oil (1) (95% by weight), Genapol O 020 (1.0% by weight) and Emulsogen MTP 70 (4.0% by weight).
• This comparative composition is stable.
• the heat capacity of the single-phase lubricating compositions according to the invention is measured by differential scanning calorimetry (DSC) at different temperatures according to the ASTM E1269 standard.
• the differential calorimetry of the monophasic lubricating compositions according to the invention is also evaluated by DSC under the following conditions:
• composition composition composition composition composition composition (2) (3) (4) (5) (6)
• the heat capacity of the single-phase lubricating compositions according to the invention is particularly advantageous. It increases with the temperature.
• Differential calorimetry (or latent heat of vaporization) demonstrates the ability of monophasic lubricating compositions according to the invention to evacuate thermal energy during their use for the lubrication of an automobile engine.

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• 2014
  • 2014-12-23 FR FR1463188A patent/FR3030569B1/fr not_active Expired - Fee Related
• 2015
  • 2015-12-22 EP EP15813457.7A patent/EP3237589A1/fr not_active Withdrawn
  • 2015-12-22 US US15/538,947 patent/US20170369814A1/en not_active Abandoned
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