WO2021149323A1 - Composition d'huile lubrifiante et composition d'huile lubrifiante pour moteurs à combustion interne - Google Patents

Composition d'huile lubrifiante et composition d'huile lubrifiante pour moteurs à combustion interne Download PDF

Info

Publication number
WO2021149323A1
WO2021149323A1 PCT/JP2020/041275 JP2020041275W WO2021149323A1 WO 2021149323 A1 WO2021149323 A1 WO 2021149323A1 JP 2020041275 W JP2020041275 W JP 2020041275W WO 2021149323 A1 WO2021149323 A1 WO 2021149323A1
Authority
WO
WIPO (PCT)
Prior art keywords
lubricating oil
oil composition
acid ester
glycerin
oil
Prior art date
Application number
PCT/JP2020/041275
Other languages
English (en)
Japanese (ja)
Inventor
周次郎 大槻
宏尚 松枝
Original Assignee
Dic株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dic株式会社 filed Critical Dic株式会社
Publication of WO2021149323A1 publication Critical patent/WO2021149323A1/fr

Links

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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • 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
    • C10M129/76—Esters containing free hydroxy or carboxyl 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
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
    • C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the 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
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • C10M137/10—Thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives

Definitions

  • the present invention relates to a lubricating oil composition containing a glycerin difatty acid ester and a glycerin trifatty acid ester, and a lubricating oil composition for an internal combustion engine.
  • Reducing fuel efficiency of automobiles has become a very important issue from the viewpoint of resource protection and environmental protection, and has been carried out by reducing the weight of the vehicle body, improving the combustion of the engine, and reducing the friction of the engine and drive train.
  • engine friction has been reduced by improving the valve train mechanism, reducing the surface roughness of sliding members, and using fuel-efficient engine oil.
  • the mainstream of fuel-efficient engine oil is a combination of low viscosity engine oil and addition of a friction reducing agent, which is intended to reduce friction loss under fluid lubrication conditions such as pistons and bearings. It is expected that the viscosity of engine oil will be further reduced in the future, and it may spread to other countries where the viscosity has not been reduced so far.
  • Fuel efficiency is reduced by adding a friction reducing agent because organic molybdenum compounds containing sulfur such as dialkyl dithiocarbamate molybdenum (MoDTC) or dialkyl dithiophosphate molybdenum (MoDTP) have an excellent friction reducing effect.
  • organic molybdenum compounds containing sulfur such as dialkyl dithiocarbamate molybdenum (MoDTC) or dialkyl dithiophosphate molybdenum (MoDTP) have an excellent friction reducing effect.
  • MoDTC dialkyl dithiocarbamate molybdenum
  • MoDTP dialkyl dithiophosphate molybdenum
  • a lubricating oil composition or the like in which an organic molybdenum compound and an ashless friction modifier (for example, a polyhydric alcohol partial fatty acid ester) are used in combination is being studied.
  • an organic molybdenum compound and an ashless friction modifier for example, a polyhydric alcohol partial fatty acid ester
  • glycerin monofatty acid ester is widely used at present, and it has been reported that friction of lubricating oil can be reduced (Patent Documents 1 to 3).
  • the base oil of internal combustion engine oil is becoming more and more low in viscosity in order to reduce fuel consumption, and at the same time, it is necessary to maintain and improve heat resistance, which is one of the very important required characteristics. For this reason, there has been a shift to synthetic oils (poly- ⁇ -olefins (PAOs), ethylene- ⁇ -olefins, GTL base oils) that have both low viscosity and high heat resistance.
  • PAOs poly- ⁇ -olefins
  • GTL base oils ethylene- ⁇ -olefins
  • the glycerin monofatty acid ester has a new problem that it is difficult to use because of its low solubility in synthetic oils due to its molecular polarity and low affinity with synthetic oils.
  • An object of the present invention is to provide a lubricating oil composition having excellent frictional properties, particularly a lubricating oil composition for an internal combustion engine, which is suitable for use as a lubricating oil for an internal combustion engine.
  • the present inventors contain at least one or more glycerin fatty acid esters selected from glycerin difatty acid ester or glycerin tri-fatty acid ester, and lubricate the glycerin fatty acid ester.
  • the lubricating oil composition for an internal combustion engine which is characterized by containing 0.1 to 10.0% by mass in the oil composition, is under conditions in a wide temperature range and pressure range, and under conditions where an external force such as a shearing force is applied. Also, they have found that low friction performance and lubrication performance can be maintained for a long period of time, and have completed the present invention.
  • the present invention 1.
  • the base oil and at least one or more fatty acid esters selected from glycerin di fatty acid ester or glycerin tri fatty acid ester are contained, and the fatty acid ester is contained in the lubricating oil composition in an amount of 0.1 to 10.0% by mass.
  • a characteristic lubricating oil composition 2.
  • R 1 to R 5 are saturated or unsaturated alkyl groups having 1 to 30 carbon atoms, and the alkyl groups may be linear or branched.
  • a lubricating oil composition wherein the base oil contains a hydrocarbon-based synthetic oil.
  • the hydrocarbon-based synthetic oil comprises PAO2, PAO4, PAO6, PAO8, PAO9, PAO10, PAO40, PAO100, ethylene- ⁇ -olefin, GTL base oil, or a mixture thereof. Composition. 5.
  • the internal combustion engine lubricating oil further comprises 0.01 to 1% by weight of at least one or more additives selected from molybdenum dialkyldithiocarbamate or molybdenum dialkyldithiophosphate in the lubricating oil composition for internal combustion engine. Regarding the composition.
  • Lubricating oil compositions and lubricating oil compositions for internal combustion engines containing the base oil of the present invention and at least one or more fatty acid esters selected from at least glycerin di fatty acid ester or glycerin tri fatty acid ester have a wide temperature range and pressure range. It is possible to improve low friction performance and lubrication performance for a long period of time even under conditions or conditions where an external force such as shearing force is applied. Therefore, in the present invention, it is possible to provide a beneficial lubricating oil composition and a lubricating oil composition for an internal combustion engine.
  • glycerin di fatty acid ester and glycerin tri fatty acid ester are adsorbed on the metal surface, and then they form a lubricating oil film on the metal surface to prevent the metals from approaching each other, resulting in a significant decrease in the coefficient of friction. There is.
  • the present invention is a lubricating oil composition and a lubricating oil composition for an internal combustion engine.
  • the lubricating oil composition and the lubricating oil composition for an internal combustion engine of the present invention are composed of a base oil and a specific glycerin fatty acid ester.
  • the glycerin fatty acid ester of the present invention is used as a lubricating oil composition by blending with a base oil, or as a grease composition by blending with a base oil and a thickener.
  • the lubricating oil composition and the lubricating oil composition for an internal combustion engine of the present invention include a base oil.
  • the base oil may be a mineral oil or a synthetic oil.
  • the mineral oil includes atmospheric distillation oil obtained by atmospheric distillation of paraffinic and naphthenic crude oils, distillate oil obtained by further vacuum distillation of the residual oil obtained by atmospheric distillation, and the distillate.
  • Mineral oil refined by performing one or more treatments such as solvent removal, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrorefining, etc., for example, light neutral oil, medium grade. Examples thereof include neutral oil, heavy neutral oil, bright stock, and mineral oil obtained by isomerizing a wax (GTL wax) produced by the Fisher-Tropsch method or the like.
  • the mineral oil may be classified into any of groups 1, 2 and 3 in the base oil category of API (American Petroleum Institute), but sludge formation can be further suppressed, and viscosity characteristics and oxidation can be achieved. From the viewpoint of obtaining stability against deterioration and the like, hydrorefined oils classified into groups 2 and 3 are preferable.
  • the base oil may contain a hydrocarbon-based synthetic oil, and may contain a poly- ⁇ -olefin, PAO2, PAO4, PAO6, PAO8, PAO9, PAO10, PAO40, PAO100, ethylene- ⁇ -olefin, GTL (Gas). to liquids) It consists of a base oil or a mixture thereof.
  • the synthetic oil for example, poly- ⁇ -olefins such as polybutene, ethylene- ⁇ -olefin copolymer, ⁇ -olefin homopolymer or copolymer, polyol ester, dibasic acid ester, phosphoric acid ester and the like. Examples thereof include various ester oils, various ethers such as polyphenyl ethers, polyglycols, alkylbenzenes, and alkylnaphthalene.
  • the above-mentioned mineral oil and synthetic oil may be used alone or in combination of a plurality of types, or may be used in combination with one or more of the above-mentioned synthetic oils.
  • mineral oils and hydrocarbon-based synthetic oils are preferable, paraffin-based refined mineral oils, poly- ⁇ -olefins, and GTL. Base oils are more preferred.
  • the kinematic viscosity at 100 ° C. is preferably 1 mm2 / s or more, more preferably 1.5 mm2 / s or more, still more preferably 2 mm2 / s or more.
  • the upper limit is preferably 50 mm2 / s or less, more preferably 40 mm2 / s or less, and even more preferably 30 mm2 / s or less.
  • the kinematic viscosity is a value measured using a glass capillary viscometer in accordance with JIS K 2283: 2000.
  • the composition becomes more suitable as a lubricating oil composition for a transmission, and seizure resistance and copper corrosion resistance are improved.
  • the content of the base oil based on the total amount of the composition shall be appropriate, and from the viewpoint of improving seizure resistance and copper corrosion resistance, it is usually 50% by mass or more, preferably 60% by mass or more, and more preferably 65. By mass or more, more preferably 70% by mass or more.
  • the upper limit is preferably 97% by mass or less, more preferably 95% by mass or less, and further preferably 93% by mass or less.
  • the lubricating oil composition and the lubricating oil composition for an internal combustion engine of the present invention contain a specific glycerin fatty acid ester.
  • the glycerin fatty acid ester used in the present invention preferably has a di-form or a tri-form fatty acid moiety, and the glycerin fatty acid ester has extremely high solubility even when poly- ⁇ -olefin is the main component of the base oil. , It is possible to add a large amount. Therefore, the design range of the lubricating oil composition and the lubricating oil composition for an internal combustion engine is widened, and various designs are possible. Further, a thick lubricating oil film can be formed on the metal surface, and the metals can be prevented from coming close to each other. As a result, since the lubrication performance is excellent, not only the friction coefficient is lowered and the fuel efficiency is improved, but also the wear of the friction surface can be prevented.
  • Low friction performance can be obtained by containing one or more kinds of fatty acid esters selected from glycerin di fatty acid ester or glycerin tri fatty acid ester and containing 0.1 to 10.0% by mass in the lubricating oil composition. .. Further, 0.1 to 5.0% by mass is a suitable content. Equations (1) and (2).
  • R 1 to R 5 are saturated or unsaturated alkyl groups having 1 to 30 carbon atoms, and the alkyl groups may be linear or branched.
  • the alkyl group preferably has 8 to 22 carbon atoms, but is 10 to 10 to 22 in that it has an easily available fatty acid carbon number and is excellent in base oil solubility, which is commercially available in the glycerin fatty acid ester market. 20 is more preferred.
  • glycerin difatty acid ester examples include glycerin dioctylate, glycerin dinonanoic acid ester, glycerin didecanoic acid ester, glycerin didodecanoic acid ester, glycerin ditetradecanoic acid ester, glycerin dipentadecanoic acid ester, glycerin dihexadecanoic acid ester, and glycerin di.
  • glycerin trifatty acid ester examples include glycerin trioctylate, glycerin trinonanoic acid ester, glycerin tridecanoic acid ester, glycerin tridodecanoic acid ester, glycerin tritetradecanoic acid ester, glycerin tripentadecanoic acid ester, glycerin trihexadecanoic acid ester, and glycerin.
  • Tri-9-hexadecenoic acid ester Tri-9-hexadecenoic acid ester, glycerin triheptadecanoic acid ester, glycerin trioctadecanoic acid ester, glycerin trioleic acid ester, glycerin trivacene acid ester, glycerin trilinoleic acid ester, glycerin tri-9,12,15-linolenic acid Estel, glycerin tri-6,9,12-linolenic acid ester, glycerin trieleostearic acid ester, glycerin trieicosanoic acid ester, glycerin tri-8,11-eicosadienoic acid ester, glycerin trimide acid ester, glycerin triarachidonic acid Examples thereof include esters and glycerin tridocosanoic acid esters. Of these, glycerin trioleic acid ester is
  • the lubricating oil composition and the lubricating oil composition for an internal combustion engine of the present invention can be further adjusted by adding various additives.
  • the lubricating oil composition of the present invention may contain an organic molybdenum compound.
  • the organic molybdenum compound contained in the lubricating oil composition may be of a single type or two or more types.
  • the organic molybdenum compound is not particularly limited as long as it can be used in the lubricating oil industry such as molybdenum dialkyldithiocarbamate (MoDTC), molybdenum dialkyldithiophosphate (MoDTP), and molybdenum amine.
  • the low friction performance can be further improved as a lubricating oil composition for an internal combustion engine.
  • an organic molybdenum compound By adding an organic molybdenum compound to the lubricating oil composition of the present invention, it can be appropriately set in consideration of the friction reducing effect, sludge suppression, and corrosion prevention.
  • the amount of molybdenum metal is preferably 50 to 2000 mass ppm, preferably 70 to 1500 mass ppm, based on the total amount of the lubricating oil composition for internal combustion engine oil. Is more preferable, and 80 to 1000 mass ppm is further preferable.
  • a thickener can be added.
  • the thickener examples include soap-based or complex soap-based thickeners, organic non-soap-based thickeners, and inorganic non-soap-based thickeners.
  • the consistency of the grease in which the lubricating additive composition of the present invention is used varies depending on the application in which the grease is used and is not particularly limited, but is usually about 100 to 500, and the content of the thickener is 100 parts by mass of the base oil. On the other hand, it is usually about 5 to 20 parts by mass.
  • ⁇ Other additives for example, an oil-based agent, a metal-based cleaning agent, an ashless dispersant, an antioxidant, an abrasion resistant agent, an extreme pressure agent, and a rust preventive, as long as the object of the present invention is not impaired.
  • Viscosity index improver, metal inactivating agent, defoaming agent, solid lubricant, flow point lowering agent, corrosion inhibitor, anti-emulsifier, solid lubricant, etc. can be added as appropriate, and any one or two More than seeds may be added.
  • oily agent examples include aliphatic saturated and unsaturated monocarboxylic acids such as stearic acid and oleic acid; polymerized fatty acids such as dimer acid and hydrogenated dimer acid, hydroxy fatty acids such as ricinoleic acid and 12-hydroxystearic acid, and lauryl.
  • Fatty acid saturated and unsaturated monoalcohols such as alcohol and oleic alcohol, aliphatic saturated and unsaturated monoamines such as stearic acid and oleylamine, aliphatic saturated and unsaturated monocarboxylic acid amides such as laurate amide and oleic acid amide, pigs
  • unsaturated animal and vegetable fats and oils such as fat (lard), beef fat, fish oil, palm oil, soybean oil, rapeseed oil, and coconut oil. One of these may be used alone, or two or more thereof may be used in combination.
  • the content of the oily agent is preferably 0.01% by weight or more, more preferably 0.1% by weight or more, and preferably 10% by weight or less, more preferably, based on the total amount of the lubricating oil composition described later. Is 5% by weight or less.
  • ⁇ Metal-based cleaning agent> As a metal-based cleaning agent, one having a TBN (total base number (Total Base Number) based on ASTM D2896) of 20 to 600 mgKOH / g is known, and the amount to be added is appropriately set according to the TBN value. ..
  • Metal-based cleaning agents are usually available on the market in a state of being diluted with a light lubricating oil base oil or the like.
  • the TBN of the metal-based cleaning agent is preferably 50 to 500 mgKOH / g, and more preferably 100 to 450 mgKOH / g.
  • the metal-based cleaning agent usually raises TBN by blending a carbonate of an alkaline earth metal, but a part of the carbonate may be a borate.
  • the content of the metal-based cleaning agent is preferably 0.1 to 10% by mass, more preferably 0.5 to 8% by mass, based on the total amount of the lubricating oil composition, from the viewpoint of sufficiently exerting the friction reducing effect. It is more preferably ⁇ 5% by mass.
  • the ashless dispersant examples include a succinic anhydride-type dispersant obtained by a condensation reaction between alkenyl succinic anhydride and a polyamine compound, and a succinic acid ester-type dispersant obtained by a condensation reaction between alkenyl succinic anhydride and a polyol compound.
  • examples thereof include a succinic anhydride type dispersant obtained by a condensation reaction of alkenyl succinic anhydride and alkanolamine, and a Mannig basic dispersant obtained by condensing alkylphenol and polyamine with formaldehyde.
  • the content of the ashless dispersant component is preferably 0.5 to 10% by mass, preferably 1 to 8% by mass, based on the total amount of the lubricating oil composition, from the viewpoint of sufficiently exerting the effect of adding the dispersant while maintaining fluidity. % Is more preferable, and 2 to 6% by mass is most preferable.
  • antioxidant examples include an aromatic amine-based antioxidant, a phenol-based antioxidant, a sub-phosphate-based antioxidant, and a thioether-based antioxidant. Above all, it is preferable to contain a phenolic antioxidant because it has high antioxidant performance and can maintain the effect of improving lubricity for a long period of time when combined with an organic molybdenum compound.
  • sulfur-based antioxidant examples include thiodipropionic acid ester, thiobis (phenol) compound, polyhydric alcohol ester of alkyl thiopropionic acid, 2-mercaptobenzimidazole, dilauryl sulfide, amylthioglycolate, olefin sulfide, and dialkyl.
  • sulfur-based antioxidant examples include polysulfide, dialkyl disulfide, and dialkyl monosulfide.
  • the content of the antioxidant is preferably 0.01 to 1% by mass, preferably 0.15 to 0% by mass, based on the total amount of the lubricating oil composition, from the viewpoint of the antioxidant effect and the suppression of decomposition of other additives. It is more preferably 95% by mass, and most preferably 0.2 to 0.9% by mass.
  • an amine-based antioxidant may be used as the antioxidant, but in the lubricating oil composition of the present invention, the organic molybdenum compound component is composed of the amine-based antioxidant component. It is preferable not to contain an amine-based antioxidant because it reduces the friction reducing effect of the above, and even if it is contained, it is preferably 0.3% by mass or less based on the total amount of the lubricating oil composition. , 0.1% by mass or less, more preferably 0.05% by mass or less.
  • the anti-wear agent examples include zinc dithiophosphate, alkyl phosphate ester, aryl phosphate ester, alkyl thiophosphate ester and the like. Since the lubricating oil composition of the present invention has a large anti-wear effect and also has an effect of improving the lubricity of the organic molybdenum compound component, it contains zinc dithiophosphate represented by the following formula (3) as an anti-wear component. It is preferable to do so.
  • R 6 to R 9 represent alkyl groups having 3 to 14 carbon atoms.
  • R 6 to R 9 represent an alkyl group having 3 to 14 carbon atoms.
  • the alkyl group having 3 to 14 carbon atoms includes a linear primary alkyl such as a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, a dodecyl group, a tridecyl group, and a tetradecyl group.
  • Isobutyl group isopentyl group, isohexyl group, isoheptyl group, isooctyl group, isononyl group, isodecyl group, isododecyl group, isotridecyl group, isotetradecyl group, 2-methylpentyl group, 2-ethylhexyl group, 2-propylheptyl group , 2-Butyl octyl group, 2-Pentyl nonyl group, 3,7-Dimethyl octyl group and other branched primary alkyl groups; isopropyl group, secondary butyl group, secondary pentyl group, secondary hexyl group, secondary heptyl group.
  • Secondary alkyl group of secondary octyl group, secondary nonyl group, secondary decyl group, secondary dodecyl group, secondary tridecyl group, secondary tetradecyl group, 1,3-dimethylbutyl group; t-butyl group, t -A tertiary alkyl group such as a pentyl group can be mentioned.
  • R 6 to R 9 improve the lubricity of the organic molybdenum compound component, a secondary alkyl group having 4 to 14 carbon atoms is preferable, a secondary alkyl group having 4 to 10 carbon atoms is more preferable, and a secondary alkyl group having 4 to 10 carbon atoms is more preferable.
  • the secondary alkyl group of ⁇ 8 is more preferable.
  • R 6 to R 9 may be the same group or a combination of different groups.
  • Examples of the phosphorus-based wear resistant agent include organic phosphine, organic phosphine oxide, organic phosphinite, organic phosphonite, organic phosphinate, organic phosphite, organic phosphonate, organic phosphate, and organic phosphoramidate. These also have a function as a phosphorus-based antioxidant.
  • the content of the anti-wear component is preferably 0.001 to 3% by mass, preferably 0.005 to 2% by mass, in terms of the amount of phosphorus derived from the anti-wear component, based on the total amount of the lubricating oil composition. It is more preferable, and most preferably 0.01 to 1% by mass.
  • Examples of the sulfur-based extreme pressure agent include sulfide fats and oils, sulfide esters, polysulfides, sulfide olefins, sulfide fatty acids, sulfide ore oils, sulfides of polyolefins, 1,3,4-thiathiol derivatives, thiuram disulfides, dithiocarbamic acid esters and the like. Be done.
  • Examples of the thiophosphate-based extreme pressure agent include organic trithiophosphate and organic thiophosphate.
  • sulfide fat and oil examples include sulfides of unsaturated animal and vegetable fats and oils such as pork fat (lard), beef tallow, fish oil, palm oil, soybean oil, rapeseed oil, and coconut oil.
  • specific examples of the sulfide oil and fat include lard sulfide, rapeseed sulfide oil, castor oil sulfide, soybean sulfide oil, fish sulfide oil, and whale sulfide oil.
  • polysulfide examples include a compound having a structure of the formula (4), which is classified into a primary type polysulfide, a secondary type polysulfide, and a tertiary type polysulfide based on the structure. May be used.
  • R 10- Sx-R 11 (4) (In the formula, R 10 and R 11 independently represent a linear or branched alkyl group or alkenyl group having 2 to 24 carbon atoms, respectively, and x represents an integer of 1 to 8.)
  • Typical methods for producing polysulfide are a method of sulfurizing an olefin and a method of sulfur-crosslinking a mercaptan, but the polysulfide of the present invention may be produced by any method.
  • Examples of the polysulfide obtained by the method of sulfurizing an olefin include a sulfide of a hydrocarbon having at least one ethylene-based unsaturated bond, and is also called a sulfide olefin.
  • the monoolefins are not particularly limited, and are, for example, isobutylene, 2-methyl-2-pentene, 2-methyl-2-butene, 2-methyl-1-butene, diisobutylene, triisobutylene, and tripropylene.
  • diene having 4 to 10 carbon atoms include 1,3-butadiene, 2-methyl-1,3-butadiene (isoprene), 1,3-pentadiene (piperylene), cyclopentadiene, and 1,5.
  • cyclohexadiene 1,6-heptadiene, cycloheptadiene, 1,7-octadiene, cyclooctadiene and the like
  • these may be used alone or in combination of two or more, and sulfides thereof. Can be mentioned.
  • the polysulfide obtained by the method of sulfur-crosslinking mercaptans is a sulfide obtained by reacting mercaptans with powdered sulfur and molten sulfur using a basic catalyst, such as dibutyl polysulfide, dipentyl polysulfide, dihexyl polysulfide, and dicyclohexyl polysulfide. , Diheptyl polysulfide, dioctyl polysulfide, dibenzyl polysulfide, dinonyl polysulfide, didodecyl polysulfide, diundecyl polysulfide and the like.
  • polysulfide examples include dibutyl polysulfide, dipentyl polysulfide, dihexyl polysulfide, dicyclohexyl polysulfide, diheptyl polysulfide, dioctyl polysulfide, dibenzyl polysulfide, dinonyl polysulfide, didodecyl polysulfide, and diundecyl polysulfide.
  • the sulfur cross-linking length x of the polysulfide and the sulfide olefin is preferably 1 to 4 and more preferably 1 to 3 because it is necessary to maintain oxidative stability.
  • sulfide fatty acids include unsaturated fatty acids such as mini-strain acid, palmitere acid, sapienoic acid, oleic acid, elaidic acid, bacenoic acid, gadrainic acid, eicosenoic acid, erucic acid, nervonic acid, linoleic acid, eikosazienoic acid, docosazienoic acid, etc.
  • Linolenic acid pinolenic acid, eleostearic acid, meadic acid, dihomo- ⁇ -linolenic acid, eikosatrienic acid, stearidonic acid, arachidonic acid, eikosatetraenoic acid, adrenoic acid, boseopentaenoic acid, osbondic acid, sardine acid,
  • Examples include sulfides of unsaturated fatty acids such as tetracosapentaenoic acid, docosahexaenoic acid, heric acid, beef fatty acids and palm kernel fatty acids.
  • rust preventive agent examples include calcium oxide paraffin wax calcium salt, paraffin wax magnesium oxide salt, beef fat fatty acid alkali metal salt, alkaline earth metal salt or amine salt, alkenyl succinic acid or alkenyl succinic acid half ester (the molecular weight of the alkenyl group is Approximately 100 to 300), sorbitan monoester, pentaerythritol monoester, glycerin monoester, nonylphenolethoxylate, lanolin fatty acid ester, lanolin fatty acid calcium salt and the like.
  • the amount of the rust preventive component blended is preferably about 0.1 to 15% by mass with respect to the lubricating oil composition within a range in which the rust preventive effect is sufficiently exhibited.
  • Viscosity index improver examples include poly (C1-18) alkyl methacrylate, (C1-18) alkyl acrylate / (C1-18) alkyl methacrylate copolymer, and diethylaminoethyl methacrylate / (C1-18) alkyl methacrylate copolymer.
  • ethylene / (C1-18) alkyl methacrylate copolymer polyisobutylene, polyalkylstyrene, ethylene / propylene copolymer, styrene / maleic acid ester copolymer, styrene / maleic acid amide copolymer, styrene / butadiene
  • examples thereof include hydride copolymers and styrene / isoprene hydride copolymers.
  • the average molecular weight is about 10,000 to 1,500,000.
  • the blending amount of the viscosity index improver component is preferably about 0.1 to 20% by mass with respect to the lubricating oil composition.
  • Metal inactivating agent examples include N, N'-salicylidene-1,2-propanediamine, alizarin, tetraalkylthiuram disulfide, benzotriazole, benzimidazole, 2-alkyldithiobenzoimidazole, and 2-alkyldithiobenzothiazole. , 2- (N, N-dialkylthiocarbamoyl) benzothiazole, 2,5-bis (alkyldithio) -1,3,4-thiadiazole, 2,5-bis (N, N-dialkylthiocarbamoyl) -1, Examples thereof include 3,4-thiadiazole.
  • the blending amount of the metal inactivating agent component is preferably about 0.01 to 5% by mass with respect to the lubricating oil composition.
  • defoaming agent examples include polydimethylsilicone, trifluoropropylmethylsilicone, colloidal silica, polyalkyl acrylate, polyalkyl methacrylate, alcohol ethoxy / propoxylate, fatty acid ethoxy / propoxylate, and sorbitan partial fatty acid ester.
  • the blending amount of the defoaming agent component is preferably about 1 to 1000 mass ppm with respect to the lubricating oil composition.
  • Solid lubricant examples include graphite, molybdenum disulfide, polytetrafluoroethylene, fatty acid alkaline earth metal salts, mica, cadmium dichloride, cadmium diiodide, calcium fluoride, lead iodide, lead oxide, and titanium carbide. , Titanium nitride, aluminum silicate, antimony oxide, cerium fluoride, polyethylene, diamond powder, silicon nitride, boron nitride fluorocarbon, melamine isocyanurate and the like.
  • the blending amount of the solid lubricant component is preferably about 0.005 to 2% by mass with respect to the lubricating oil composition.
  • the phosphorus-containing compound is contained in the lubricating oil composition because it may poison the exhaust gas purification catalyst when the lubricating oil composition of the present invention is used as the engine oil. It is preferable to use the oil in a range in which the total phosphorus content does not exceed 1000 mass ppm and the total sulfur content does not exceed 5000 mass ppm.
  • the lubricating oil composition of the present invention can be used for lubrication for various purposes.
  • engine oils such as gasoline engine oils and diesel engine oils, industrial lubricating oils, turbine oils, machine oils, bearing oils, compressor oils, hydraulic oils, hydraulic oils, internal combustion engine oils, refrigerating machine oils, gear oils, automatic transmissions.
  • engine oils such as gasoline engine oils and diesel engine oils, industrial lubricating oils, turbine oils, machine oils, bearing oils, compressor oils, hydraulic oils, hydraulic oils, internal combustion engine oils, refrigerating machine oils, gear oils, automatic transmissions.
  • oils such as gasoline engine oils and diesel engine oils, industrial lubricating oils, turbine oils, machine oils, bearing oils, compressor oils, hydraulic oils, hydraulic oils, internal combustion engine oils, refrigerating machine oils, gear oils, automatic transmissions.
  • oils such as gasoline engine oils and diesel engine oils, industrial lubricating oils, turbine oils, machine oils, bearing oils, compressor oils, hydraulic oils, hydraulic oils, internal combustion engine oils, refrigerating machine oils, gear oils, automatic transmissions.
  • Low friction performance is a typical characteristic of the lubricating oil composition of the present invention and the lubricating oil composition for internal combustion engines.
  • a method for measuring the friction performance there is a friction coefficient measuring method, and in the present invention, the measurement is performed by the SRV measurement test and the pendulum friction test.
  • Example 1 200 mL of glass containing 1.00 g of glycerin dioleic acid ester (Poem OL-200VM (RIKEN Vitamin Co., Ltd.)) and 99.00 g of commercially available engine oil (synthetic oil PAO (polyalphaolefin) base, Toyota genuine OW-16) Weighed in a beaker. Then, using a three-one motor with a glass anchor type stirring blade, stirring and mixing was performed at 350 rpm for 30 minutes to prepare lubricating oil 1.
  • the order and method of addition of the glycerin partial fatty acid ester and the base oil are not particularly limited, and the method of blending the glycerin partial fatty acid ester with the base oil or the method of adding the base oil to the glycerin partial fatty acid ester may be used.
  • Lubricating oils 2 to 6 were prepared in the same manner as in Example 1 based on the formulations shown in Table 1 below.
  • Glycerin dioleic acid ester Poem OL-200VM (RIKEN Vitamin Co., Ltd.)
  • Glycerin trioleic acid ester Actor OL-1 (RIKEN Vitamin Co., Ltd.)
  • Commercial engine oil (synthetic oil PAO base, Toyota genuine 0W-16): TOYOTA GENUINE MOTOR OIL DASTLE SN 0W-16 SYNTHETIC Commercial engine oil (synthetic oil PAO base, Nissan genuine 0W-16): Nissan Strong Save X 0W-16
  • Commercial engine oil (synthetic oil PAO base, Nissan genuine 0W-16): Nissan Ultra Green SN 0W-16
  • Lubricants 7-9 were prepared using only commercially available synthetic oil-based engine oils without the addition of glycerin partial fatty acid esters.
  • the obtained lubricating oil was subjected to various tests by the following methods, and its coefficient of friction was measured. The evaluation results are shown in Table 1.
  • the lubricating oil in which glycerinji or trifatty acid ester was added to the base oil showed excellent low friction characteristics.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

En ce qui concerne cette composition d'huile lubrifiante, un ester de dioléate de glycérol et un ester de trioléate de glycérol présentent une solubilité extrêmement élevée dans une huile synthétique et peuvent être ajoutés sans aucune limitation, tout en étant en mesure de former un film d'huile lubrifiante sur une surface métallique et d'empêcher les métaux de se rapprocher l'un de l'autre. Par conséquent, cette composition d'huile lubrifiante présente d'excellentes performances de lubrification et permet l'amélioration de l'efficacité du carburant en diminuant le coefficient de frottement sans dégrader les autres caractéristiques d'huiles de moteur à combustion interne existantes. De plus, cette composition d'huile lubrifiante est capable d'empêcher l'usure d'une surface de frottement, ce qui a pour effet d'améliorer les performances de lubrification et similaire.　L'invention concerne une composition d'huile lubrifiante qui est caractérisée en ce qu'elle contient une huile de base et un ou plusieurs acides gras choisis au moins parmi des esters de diacide gras de glycérol et des esters de triacide gras de glycérol, et qui est en outre caractérisée en ce que les acides gras sont contenus dans la composition d'huile lubrifiante en une quantité de 0,1 à 10,0 % en masse
PCT/JP2020/041275 2020-01-20 2020-11-05 Composition d'huile lubrifiante et composition d'huile lubrifiante pour moteurs à combustion interne WO2021149323A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-006805 2020-01-20
JP2020006805 2020-01-20

Publications (1)

Publication Number Publication Date
WO2021149323A1 true WO2021149323A1 (fr) 2021-07-29

Family

ID=76992139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/041275 WO2021149323A1 (fr) 2020-01-20 2020-11-05 Composition d'huile lubrifiante et composition d'huile lubrifiante pour moteurs à combustion interne

Country Status (1)

Country Link
WO (1) WO2021149323A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113881482A (zh) * 2021-09-24 2022-01-04 亚培烯科技（杭州）有限公司 一种齿轮箱变速器润滑剂组合物及其制备方法和应用
CN114591778A (zh) * 2022-02-15 2022-06-07 黄国帮 一种节能减排的柴、汽机油配方

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08176579A (ja) * 1994-12-27 1996-07-09 Asahi Denka Kogyo Kk 潤滑油組成物
JP2000169871A (ja) * 1998-12-08 2000-06-20 Nippon Mitsubishi Oil Corp 潤滑油組成物
JP2005082709A (ja) * 2003-09-09 2005-03-31 Nissan Motor Co Ltd 内燃機関用潤滑油組成物
JP2005307202A (ja) * 2004-03-25 2005-11-04 Nippon Oil Corp 潤滑油組成物
JP2007146090A (ja) * 2004-11-01 2007-06-14 Infineum Internatl Ltd 潤滑組成物
JP2015521685A (ja) * 2012-06-29 2015-07-30 トータル・マーケティング・サービシーズ 潤滑剤組成物

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08176579A (ja) * 1994-12-27 1996-07-09 Asahi Denka Kogyo Kk 潤滑油組成物
JP2000169871A (ja) * 1998-12-08 2000-06-20 Nippon Mitsubishi Oil Corp 潤滑油組成物
JP2005082709A (ja) * 2003-09-09 2005-03-31 Nissan Motor Co Ltd 内燃機関用潤滑油組成物
JP2005307202A (ja) * 2004-03-25 2005-11-04 Nippon Oil Corp 潤滑油組成物
JP2007146090A (ja) * 2004-11-01 2007-06-14 Infineum Internatl Ltd 潤滑組成物
JP2015521685A (ja) * 2012-06-29 2015-07-30 トータル・マーケティング・サービシーズ 潤滑剤組成物

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113881482A (zh) * 2021-09-24 2022-01-04 亚培烯科技（杭州）有限公司 一种齿轮箱变速器润滑剂组合物及其制备方法和应用
CN114591778A (zh) * 2022-02-15 2022-06-07 黄国帮 一种节能减排的柴、汽机油配方

Similar Documents

Publication Publication Date Title
CN109415646B (zh) 润滑性组合物及包含该润滑性组合物的机油组合物
JP5350583B2 (ja) 潤滑油組成物及びそれを用いた自動車変速機の金属疲労の向上方法
CA2163206C (fr) Composition d'huile lubrifiante
JP4936692B2 (ja) 潤滑組成物
EP2537914B1 (fr) Composition lubrifiante pour transmission à variation continue
JP6370293B2 (ja) 潤滑剤組成物
RU2612803C2 (ru) Композиции смазки для трансмиссий
CN104204170A (zh) 润滑油组合物
WO2021149323A1 (fr) Composition d'huile lubrifiante et composition d'huile lubrifiante pour moteurs à combustion interne
JP2016506996A (ja) アミン化合物をベースとする潤滑剤組成物
US11767486B2 (en) Sulfur-based extreme-pressure agent and metalworking fluid
KR20150099556A (ko) 폴리글리세롤 에테르로 제조된 윤활유 조성물
JP2021031577A (ja) 潤滑油組成物
JP6951316B2 (ja) 潤滑油組成物、及び潤滑方法
US11739281B2 (en) Use of a lubricant composition for transmission
WO2018061466A1 (fr) Composition d'huile lubrifiante pour machine industrielle, et procédé de lubrification
JP2018070721A (ja) 潤滑油組成物
JP7168342B2 (ja) モリブデンジチオカルバメート組成物及びモリブデンジチオカルバメートの製造方法
JP6857317B2 (ja) 潤滑油組成物
JP2019147920A (ja) 潤滑油組成物
JP2019532157A (ja) 潤滑剤組成物
JP2021075582A (ja) 潤滑油組成物
JP2021080339A (ja) 潤滑油組成物
JP2001200282A (ja) 潤滑性組成物
JP2016537454A (ja) 中速ディーゼルエンジン中の銀軸受の保護用潤滑油組成物

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20915645

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: JP

122 Ep: pct application non-entry in european phase

Ref document number: 20915645

Country of ref document: EP

Kind code of ref document: A1