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WO2015056783A1 - Composition d'huile lubrifiante - Google Patents

Composition d'huile lubrifiante Download PDF

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Publication number
WO2015056783A1
WO2015056783A1 PCT/JP2014/077707 JP2014077707W WO2015056783A1 WO 2015056783 A1 WO2015056783 A1 WO 2015056783A1 JP 2014077707 W JP2014077707 W JP 2014077707W WO 2015056783 A1 WO2015056783 A1 WO 2015056783A1
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WO
WIPO (PCT)
Prior art keywords
acid
branched
linear
lubricating oil
mass
Prior art date
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PCT/JP2014/077707
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English (en)
Japanese (ja)
Inventor
仁 小松原
紀子 菖浦
萌奈 有山
Original Assignee
Ｊｘ日鉱日石エネルギー株式会社
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Application filed by Ｊｘ日鉱日石エネルギー株式会社 filed Critical Ｊｘ日鉱日石エネルギー株式会社
Priority to US15/029,136 priority Critical patent/US20160257905A1/en
Priority to CN201480056756.6A priority patent/CN105658775B/zh
Priority to JP2015542903A priority patent/JP6373857B2/ja
Priority to MX2016004798A priority patent/MX389203B/es
Publication of WO2015056783A1 publication Critical patent/WO2015056783A1/fr
Priority to US16/591,285 priority patent/US20200032159A1/en

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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
    • 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
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular 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
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • 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
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/38—Heterocyclic nitrogen compounds
    • C10M133/44—Five-membered ring containing nitrogen and carbon 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
    • 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
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/2805—Esters 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
    • 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
    • C10M2209/086—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 polycarboxylic, e.g. maleic acid
    • 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
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon 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
    • C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
    • 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
    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
    • C10M2227/066—Organic compounds derived from inorganic acids or metal salts derived from Mo or W
    • 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
    • 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
    • C10N2030/02—Pour-point; 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
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives

Definitions

  • the present invention relates to a lubricating oil composition.
  • One way to save fuel in transmissions and final reduction gears is to reduce the viscosity of lubricating oil.
  • automatic transmissions for automobiles and continuously variable transmissions have torque converters, wet clutches, gear bearing mechanisms, oil pumps, hydraulic control mechanisms, etc.
  • manual transmissions and final reduction gears are gear bearings.
  • the present invention has been made in view of such circumstances, and has an object to provide a lubricating oil composition having extreme pressure and wear resistance capable of reducing fuel consumption and further reducing the friction coefficient between metals.
  • the present invention provides a lubricating oil composition shown in the following [1] to [4], a use of the composition shown in the following [5], and a production of the composition shown in the following [6]. Provide use for.
  • a lubricating oil composition comprising 100 to 1000 ppm by mass of an organic molybdenum compound in terms of molybdenum element, based on the total amount, and having a kinematic viscosity at 40 ° C. of 50 mm 2 / s or less.
  • composition as a hypoid gear lubricant, wherein the composition contains 0.5 to 70% by mass of an ester base oil based on the total amount of the lubricant base oil, and has a kinematic viscosity at 40 ° C. Containing a lubricating base oil having an A of 18 to 28 mm 2 / s and an organic molybdenum compound of 100 to 1000 ppm by mass in terms of molybdenum based on the total amount of the lubricating oil composition, and a kinematic viscosity at 40 ° C. of 50 mm Use that is 2 / s or less.
  • compositions for the production of a hypoid gear lubricant wherein the composition contains 0.5 to 70% by mass of an ester base oil based on the total amount of the lubricant base oil, and is 40 ° C. Containing a lubricating base oil having a kinematic viscosity of 18 to 28 mm 2 / s and an organic molybdenum compound of 100 to 1000 mass ppm in terms of molybdenum element based on the total amount of the lubricating oil composition. Use wherein the viscosity is 50 mm 2 / s or less.
  • the kinematic viscosity referred to in the present invention means the kinematic viscosity defined in ASTM D-445.
  • the viscosity index as used in the present invention means a viscosity index measured in accordance with JIS K 2283-1993.
  • a lubricating oil composition that has sufficient extreme pressure and wear resistance and further reduces the coefficient of friction between metals. Therefore, when applied to a manual transmission, an automatic transmission, a continuously variable transmission, or an industrial gear system for automobiles, the fuel consumption is achieved while maintaining the necessary characteristics as gear oil, particularly hypoid gear oil. Can do.
  • the lubricating oil composition according to this embodiment comprises (A) 0.5 to 70% by mass of an ester base oil based on the total amount of the lubricating base oil, and a kinematic viscosity at 40 ° C. is 18 to 28 mm 2 / s.
  • the lubricating oil composition of the present embodiment comprises (A) 0.5 to 70% by mass of an ester base oil based on the total amount of the lubricating base oil, and has a kinematic viscosity at 40 ° C. of 18 to 28 mm 2 / s. Contains lubricating base oil.
  • the alcohol constituting the ester base oil may be a monohydric alcohol or a polyhydric alcohol (polyol), and the acid constituting the ester base oil may be a monobasic acid or a polybasic acid. Moreover, if it is a base oil containing an ester bond, a complex ester compound may be used.
  • the monohydric alcohol those having 1 to 24 carbon atoms, preferably 1 to 12 carbon atoms, more preferably 1 to 8 carbon atoms are usually used. Such alcohols may be linear or branched, It may be saturated or unsaturated. Specific examples of the alcohol having 1 to 24 carbon atoms include methanol, ethanol, linear or branched propanol, linear or branched butanol, and linear or branched pentanol.
  • polyhydric alcohol those having 2 to 10 valences, preferably 2 to 6 valences are usually used.
  • divalent to 10-valent polyhydric alcohol include, for example, ethylene glycol, diethylene glycol, polyethylene glycol (ethylene glycol tri- to 15-mer), propylene glycol, dipropylene glycol, polypropylene glycol (propylene glycol 3- 15-mer), 1,3-propanediol, 1,2-propanediol, 1,3-butanediol, 1,4-butanediol, 2-methyl-1,2-propanediol, 2-methyl-1, Dihydric alcohols such as 3-propanediol, 1,2-pentanediol, 1,3-pentanediol, 1,4-pentanediol, 1,5-pentanediol, neopentylglycol; glycerin, polyglycerin (glycerin (glycerin (g
  • Polysaccharides such as xylose, arabinose, ribose, rhamnose, glucose, fructose, galactose, mannose, sorbose, cellobiose, maltose, isomaltose, trehalose, sucrose, and the like, and mixtures thereof. It is.
  • a fatty acid having 2 to 24 carbon atoms is usually used as the monobasic acid.
  • the fatty acid may be linear or branched, and may be saturated or unsaturated. Specifically, for example, acetic acid, propionic acid, linear or branched butanoic acid, linear or branched pentanoic acid, linear or branched hexanoic acid, linear or branched Branched heptanoic acid, linear or branched octanoic acid, linear or branched nonanoic acid, linear or branched decanoic acid, linear or branched undecanoic acid, Linear or branched dodecanoic acid, linear or branched tridecanoic acid, linear or branched tetradecanoic acid, linear or branched pentadecanoic acid, linear or branched Hexadecanoic acid, linear or branched heptadecanoic acid, linear or branched octade
  • polybasic acid examples include dibasic acids having 2 to 16 carbon atoms and trimellitic acid.
  • the dibasic acid having 2 to 16 carbon atoms may be linear or branched, and may be saturated or unsaturated.
  • ethanedioic acid propanedioic acid, linear or branched butanedioic acid, linear or branched pentanedioic acid, linear or branched hexanedioic acid, Linear or branched heptanedioic acid, linear or branched octanedioic acid, linear or branched nonanedioic acid, linear or branched decanedioic acid, linear Linear or branched undecanedioic acid, linear or branched dodecanedioic acid, linear or branched tridecanedioic acid, linear or branched tetradecanedioic acid, linear or Branched
  • the combination of the alcohol and the acid forming the ester is arbitrary and is not particularly limited.
  • Examples of the ester that can be used in the present invention include the following esters. These esters may be used alone, or 2 You may combine seeds or more.
  • (A) ester of monohydric alcohol and monobasic acid (b) ester of polyhydric alcohol and monobasic acid (c) ester of monohydric alcohol and polybasic acid (d) polyhydric alcohol and polybasic acid (E) Mixed ester of monohydric alcohol, mixture of polyhydric alcohol and polybasic acid (f) Mixed ester of polyhydric alcohol with monobasic acid, polybasic acid (g) Monohydric alcohol , Mixtures of polyhydric alcohols with monobasic acids and polybasic acids
  • an ester of a monohydric alcohol and a polybasic acid is preferable because of excellent friction resistance and oxidation stability, and a dibasic acid which is an ester of a monohydric alcohol and a dibasic acid More preferably, it is an ester.
  • the content of the ester base oil is 0.5 to 70% by mass, preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably based on the total amount of the lubricating base oil. 3% by mass or more. Moreover, Preferably it is 60 mass% or less, More preferably, it is 55 mass% or less. When the content of the ester base oil is 0.5% by mass or more, extreme pressure properties, wear resistance, seizure resistance, and friction resistance tend to be excellent. Moreover, it exists in the tendency which is excellent in oxidation stability as ester base oil is 70 mass% or less.
  • the kinematic viscosity at 40 ° C. of the ester base oil is not particularly limited, but is preferably 5 mm 2 / s or more, more preferably 6 mm 2 / s or more, and further preferably 7 mm 2 / s or more. Moreover, Preferably it is 50 mm ⁇ 2 > / s or less, More preferably, it is 30 mm ⁇ 2 > / s or less, More preferably, it is 20 mm ⁇ 2 > / s or less.
  • the kinematic viscosity at 40 ° C. is 5 mm 2 / s or more, or 50 mm 2 / s or less, extreme pressure properties, wear resistance, and seizure resistance tend to be excellent.
  • the viscosity index of the ester base oil is not particularly limited, but is preferably 125 or more, more preferably 130 or more, and further preferably 135 or more. When the viscosity index is 125 or more, the low temperature fluidity tends to be excellent.
  • the pour point of the ester base oil is not particularly limited, but is preferably ⁇ 30 ° C. or less, more preferably ⁇ 50 ° C. or less, still more preferably ⁇ 60 ° C. or less, and particularly preferably ⁇ 70 ° C. It is as follows.
  • the flash point of the ester base oil is not particularly limited, but is preferably 200 ° C or higher, more preferably 250 ° C or higher, and further preferably 300 ° C or higher.
  • the lubricating base oil according to this embodiment may contain a base oil component other than the ester base oil as long as the ester base oil is 0.5 to 70% by mass based on the total amount of the lubricating base oil. it can.
  • Base oil components other than the ester base oil are not particularly limited, and base oils used for ordinary lubricating oils can be used. Specifically, a mineral base oil, a synthetic base oil, or a mixture obtained by mixing two or more base oils selected from these at an arbitrary ratio can be used.
  • mineral base oils lubricating oil fractions obtained by subjecting crude oil to atmospheric distillation and reduced pressure distillation are subjected to solvent deburring, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrorefining, sulfuric acid
  • Mineral oil base oils such as paraffinic and naphthenic oils refined by combining purification treatments such as washing and clay treatment alone or in combination of two or more, base oils produced by catalytic dewaxing of normal paraffins, isoparaffins, petroleum waxes, etc. Is mentioned. These base oils may be used alone or in combination of two or more at any ratio.
  • Mineral oil base oils are base oils classified as Group II or Group III defined in API (American Petroleum Institute) Base Stock Categories from the viewpoint of lowering viscosity and sulfur content. Are preferred, and base oils classified in Group III are more preferred.
  • Synthetic base oils are produced from poly ⁇ -olefins or their hydrides, isobutene oligomers or their hydrides, isoparaffins, alkylbenzenes, alkylnaphthalenes, polyoxyalkylene glycols, dialkyldiphenyl ethers, polyphenyl ethers, and Fischer-Tropsch processes.
  • Base oils produced by catalytic dewaxing of the wax.
  • the synthetic base oil is preferably a base oil produced by catalytic dewaxing of a wax produced from a poly ⁇ -olefin or a Fischer-Tropsch process.
  • the poly ⁇ -olefin include oligomers or co-oligomers of 2 to 32 carbon atoms, preferably 6 to 16 carbon atoms (for example, 1-octene oligomer, 1-decene oligomer, 1-dodecene oligomer). , Ethylene-propylene co-oligomer and the like) and hydrides thereof.
  • polystyrene resin there is no particular limitation on the production method of the poly ⁇ -olefin, but, for example, aluminum trichloride, boron trifluoride, or boron trifluoride and water, alcohol (for example, ethanol, propanol, or butanol), carboxylic acid, or ester (for example, polymerization of ⁇ -olefin in the presence of a polymerization catalyst such as a Friedel-Crafts catalyst containing a complex with ethyl acetate or ethyl propionate) may be mentioned.
  • a polymerization catalyst such as a Friedel-Crafts catalyst containing a complex with ethyl acetate or ethyl propionate
  • the kinematic viscosity of the lubricating base oil at 40 ° C. is 18 to 28 mm 2 / s, preferably 20 mm 2 / s or more, more preferably 22 mm 2 / s or more. Moreover, Preferably it is 27 mm ⁇ 2 > / s or less, More preferably, it is 26 mm ⁇ 2 > / s or less.
  • kinematic viscosity at 40 ° C. to 28 mm 2 / s or less, it is possible to obtain a lubricating oil composition having excellent low-temperature fluidity and low fluid resistance, and thus having a smaller rotational resistance.
  • the kinematic viscosity at 100 ° C. of the lubricating base oil is not particularly limited, but is preferably 1 mm 2 / s or more, more preferably 3 mm 2 / s or more, and further preferably 4 mm 2 / s or more. Moreover, it is preferably 10 mm 2 / s or less, more preferably 8 mm 2 / s or less, and further preferably 6 mm 2 / s or less.
  • the viscosity index of the lubricating base oil is not particularly limited, but is preferably 120 or more, more preferably 125 or more, and further preferably 130 or more. By setting the viscosity index to 120 or more, it is possible to obtain a lubricating oil composition that exhibits good viscosity characteristics from low temperature to high temperature and is excellent in oxidation stability.
  • the lubricating oil composition according to this embodiment contains 100 to 1000 ppm by mass of an organic molybdenum compound in terms of molybdenum element, based on the total amount of the lubricating oil composition, as a friction modifier.
  • the metal friction coefficient can be reduced and the fuel economy can be improved.
  • organic molybdenum compound according to the present embodiment examples include sulfur-containing organic molybdenum compounds such as molybdenum dithiophosphate and molybdenum dithiocarbamate (MoDTC), molybdenum compounds (for example, molybdenum oxide such as molybdenum dioxide and molybdenum trioxide, and orthomolybdic acid.
  • sulfur-containing organic molybdenum compounds such as molybdenum dithiophosphate and molybdenum dithiocarbamate (MoDTC)
  • molybdenum compounds for example, molybdenum oxide such as molybdenum dioxide and molybdenum trioxide
  • orthomolybdic acid examples include sulfur-containing organic molybdenum compounds such as molybdenum dithiophosphate and molybdenum dithiocarbamate (MoDTC), molybdenum compounds (for example, molybdenum oxide such as molybdenum dioxide and molybdenum trioxid
  • Molybdate such as paramolybdic acid, (poly) sulfurized molybdate, metal salts of these molybdates, molybdate such as ammonium salt, molybdenum disulfide, molybdenum trisulfide, molybdenum pentasulfide, molybdenum sulfide such as polysulfide molybdenum , Sulfurized molybdic acid, metal salts or amine salts of sulfurized molybdic acid, molybdenum halides such as molybdenum chloride, etc.) and sulfur-containing organic compounds (eg, alkyl (thio) xanthate, thiadiazole, mercaptothiadi) Sol, thiocarbonate, tetrahydrocarbyl thiuram disulfide, bis (di (thio) hydrocarbyl dithiophosphonate) disulfide, organic (poly) sulfide, s
  • organic molybdenum compound an organic molybdenum compound that does not contain sulfur as a constituent element can be used.
  • organic molybdenum compounds that do not contain sulfur as a constituent element include molybdenum-amine complexes, molybdenum-succinimide complexes, molybdenum salts of organic acids, and molybdenum salts of alcohols. Complexes, molybdenum salts of organic acids and molybdenum salts of alcohols are preferred.
  • the content of the organomolybdenum compound is 100 to 1000 ppm by mass in terms of molybdenum element, preferably 200 ppm by mass or more, based on the total amount of the lubricating oil composition.
  • it is 300 mass ppm or more.
  • it is 900 mass ppm or less preferably, More preferably, it is 800 mass ppm or less.
  • the content is 100 mass ppm or more, the wear resistance and the friction resistance tend to be excellent, and when the content is 1000 mass ppm or less, the seizure resistance tends to be excellent.
  • the molybdenum element conversion amount of the organic molybdenum compound can be obtained by, for example, ICP elemental analysis.
  • the lubricating oil composition according to the present embodiment includes, as a viscosity modifier, 2 wt% or more of co-polymerized ⁇ -olefin and an ester monomer having a polymerizable unsaturated bond, based on the total amount of the lubricating oil composition.
  • a coalescence may be further contained.
  • the copolymer preferably has a weight average molecular weight of 2000 to 20000. By further containing such a copolymer, oil film retention and extreme pressure can be further improved.
  • the ester monomer having a polymerizable unsaturated bond is not particularly limited as long as it is a compound having a polymerizable unsaturated bond and an ester bond, but at least one of the ⁇ carbon and ⁇ carbon of the carboxy group is ethylenically unsaturated.
  • An ⁇ , ⁇ -ethylenically unsaturated dicarboxylic acid diester which is a diester of an unsaturated dicarboxylic acid forming a saturated bond (ie, C ⁇ C double bond) is preferred.
  • the ⁇ , ⁇ -ethylenically unsaturated dicarboxylic acid forms an ethylenically unsaturated bond with respect to both carboxy groups such as maleic acid, fumaric acid, citraconic acid, and mesaconic acid.
  • ⁇ , ⁇ -ethylenically unsaturated bonds are not limited to compounds present in the main chain, and only one carboxy group such as glutaconic acid has ⁇ and ⁇ carbons that are ethylenic. It is a concept that includes a compound having an unsaturated bond, and also includes a compound in which an ⁇ , ⁇ -ethylenically unsaturated bond is found in the side chain, such as itaconic acid.
  • the structure of the copolymer of the ⁇ -olefin and the ester monomer having a polymerizable unsaturated bond is not particularly limited as long as the weight average molecular weight is 2000 to 20000. Further, the production method is not particularly limited, and those produced by a known method can be used.
  • the weight average molecular weight (Mw) of the copolymer of an ⁇ -olefin and an ester monomer having a polymerizable unsaturated bond is 2000 to 20000, preferably 4000 or more, more preferably 6000 or more. Moreover, Preferably it is 15000 or less, More preferably, it is 12000 or less.
  • the weight average molecular weight means that two columns of GHSHR-M (7.8 mm ID ⁇ 30 cm) manufactured by Tosoh Corporation are used in series in a 150-C ALC / GPC apparatus manufactured by Waters, and tetrahydrofuran is used as a solvent.
  • RI differential refractometer
  • the copolymer content is preferably 2% by mass or more, more preferably 2.5% by mass or more, based on the total amount of the lubricating oil composition. More preferably, it is 3.5 mass% or more.
  • the upper limit of the content is not particularly limited, but is preferably 25% by mass or less, more preferably 24% by mass or less, and further preferably 22% by mass or less.
  • the content of the component (D) is 25% by mass or less, sufficient extreme pressure property, abrasion resistance, seizure resistance, friction resistance and oxidation stability tend to be exhibited.
  • the lubricating oil composition according to this embodiment may further contain 100 to 500 mass ppm of a boron-containing dispersant in terms of boron element based on the total amount of the lubricating oil composition. Thereby, oil film retainability and extreme pressure property can be further improved.
  • Boron-containing dispersant is a borated ashless dispersant.
  • the ashless dispersant include a nitrogen-containing compound having at least one linear or branched alkyl group or alkenyl group having 40 to 400 carbon atoms or a derivative thereof, a modified product of alkenyl succinimide, and the like. Can be mentioned. One or more kinds arbitrarily selected from these can be blended.
  • the succinimide includes a so-called monotype succinimide represented by the general formula (3) in which succinic anhydride is added to one end of the polyamine, and a general formula in which succinic anhydride is added to both ends of the polyamine ( And so-called bis-type succinimide represented by 4).
  • R 9 represents an alkyl group or alkenyl group having 40 to 400 carbon atoms, preferably an alkyl group or alkenyl group having 60 to 350 carbon atoms, and p is 1 to 5, preferably 2 to 4. Indicates an integer.
  • R 10 and R 11 may be the same or different and each represents an alkyl group or alkenyl group having 40 to 400 carbon atoms, preferably an alkyl group or alkenyl group having 60 to 350 carbon atoms, A polybutenyl group is preferred.
  • q represents an integer of 0 to 4, preferably 1 to 3.
  • the lubricating oil composition according to this embodiment may contain one of mono-type or bis-type succinimides, or may contain both.
  • the production method of the succinimide is not particularly limited.
  • an alkyl succinic acid or alkenyl succinic acid obtained by reacting a compound having an alkyl group or alkenyl group having 40 to 400 carbon atoms with maleic anhydride at 100 to 200 ° C. is used as a polyamine. It can obtain by making it react.
  • Specific examples of the polyamine include diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and pentaethylenehexamine.
  • the content of the boron-containing dispersant is preferably 100 to 500 ppm by mass in terms of boron element, more preferably 150 ppm by mass, based on the total amount of the lubricating oil composition. It is above, More preferably, it is 200 mass ppm or more. More preferably, it is 450 mass ppm or less, More preferably, it is 400 mass ppm or less.
  • the content is 100 ppm by mass or more, extreme pressure properties, wear resistance, seizure resistance, and friction resistance tend to be excellent. Moreover, it exists in the tendency for it to be excellent with friction resistance as the content is 500 mass ppm or less.
  • the boron element conversion amount of a boron containing dispersing agent can be calculated
  • the lubricating oil composition according to this embodiment may contain any additive generally used in lubricating oils depending on the purpose in order to further improve its performance.
  • additives include viscosity modifiers other than the above-mentioned copolymers, metal-based detergents, ashless dispersants other than boron-containing dispersants, antiwear agents (or extreme pressure agents), antioxidants, and corrosion.
  • additives such as an inhibitor, a rust inhibitor, a demulsifier, a metal deactivator, an antifoaming agent, and a friction modifier other than the component (B).
  • the viscosity modifier other than the copolymer is specifically a non-dispersed or dispersed ester group-containing viscosity modifier, such as a non-dispersed or dispersed poly (meth) acrylate viscosity modifier, non-dispersed.
  • a non-dispersed or dispersed poly (meth) acrylate viscosity modifier non-dispersed.
  • Type or dispersion type olefin- (meth) acrylate copolymer-based viscosity modifier styrene-maleic anhydride copolymer-based viscosity modifier, and mixtures thereof.
  • An acrylate viscosity modifier is preferred.
  • non-dispersed or dispersed polymethacrylate viscosity modifiers are preferred.
  • viscosity modifiers other than the above-mentioned copolymers include non-dispersed or dispersed ethylene- ⁇ -olefin copolymers or hydrides thereof, polyisobutylene or hydrides thereof, styrene-diene hydrogenated copolymers, Examples thereof include polyalkylstyrene.
  • metal detergents include sulfonate detergents, salicylate detergents, phenate detergents, and the like, including any of normal salts, basic normal salts, and overbased salts with alkali metals or alkaline earth metals. Can be blended. In use, one kind or two or more kinds arbitrarily selected from these can be blended.
  • any non-boron ashless dispersant used in lubricating oils can be used.
  • a linear or branched alkyl group or alkenyl group having 40 to 400 carbon atoms can be used.
  • Examples include polyamines having at least one, modified products of these carboxylic acids, phosphoric acids, and the like. In use, one kind or two or more kinds arbitrarily selected from these can be blended.
  • any antiwear agent / extreme pressure agent used in lubricating oils can be used.
  • sulfur-based, phosphorus-based, sulfur-phosphorus extreme pressure agents and the like can be used.
  • zinc dialkyldithiophosphate (ZnDTP) phosphites, thiophosphites, dithiophosphites Acid esters, trithiophosphites, phosphate esters, thiophosphate esters, dithiophosphate esters, trithiophosphate esters, amine salts thereof, metal salts thereof, derivatives thereof, dithiocarbamate, zinc dithio Carbamate, MoDTC, disulfides, polysulfides, sulfurized olefins, sulfurized fats and oils, and the like can be given.
  • addition of a sulfur-based extreme pressure agent is preferable, and sulfurized fats and oils are particularly preferable.
  • antioxidants examples include ashless antioxidants such as phenols and amines, and metal antioxidants such as copper and molybdenum.
  • phenol-based ashless antioxidants include 4,4′-methylenebis (2,6-di-tert-butylphenol), 4,4′-bis (2,6-di-tert-
  • amine-based ashless antioxidants include phenyl- ⁇ -naphthylamine, alkylphenyl- ⁇ -naphthylamine, and dialkyldiphenylamine.
  • corrosion inhibitor examples include benzotriazole, tolyltriazole, thiadiazole, and imidazole compounds.
  • rust preventive examples include petroleum sulfonate, alkylbenzene sulfonate, dinonylnaphthalene sulfonate, alkenyl succinic acid ester, and polyhydric alcohol ester.
  • demulsifier examples include polyalkylene glycol nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, and polyoxyethylene alkyl naphthyl ether.
  • metal deactivator examples include imidazoline, pyrimidine derivatives, alkylthiadiazole, mercaptobenzothiazole, benzotriazole or derivatives thereof, 1,3,4-thiadiazole polysulfide, 1,3,4-thiadiazolyl-2,5-bis.
  • metal deactivator examples include dialkyldithiocarbamate, 2- (alkyldithio) benzimidazole, ⁇ - (o-carboxybenzylthio) propiononitrile.
  • antifoaming agent examples include silicone oil having a kinematic viscosity at 25 ° C. of 1,000 to 100,000 mm 2 / s, alkenyl succinic acid derivative, ester of polyhydroxy aliphatic alcohol and long chain fatty acid, methyl salicylate and o- Examples thereof include esters with hydroxybenzyl alcohol.
  • Examples of the friction modifier other than the component (B) include ashless friction modifiers, and any compound usually used as an ashless friction modifier for lubricating oils can be used. Having at least one hydrocarbon group, preferably an alkyl group or an alkenyl group, particularly a straight-chain alkyl group or straight-chain alkenyl group having 6 to 30 carbon atoms in the molecule, amine-based, imide-based, fatty acid ester-based, fatty acid amide Ashless friction modifiers such as those based on fatty acids, fatty alcohols, aliphatic alcohols, and aliphatic ethers.
  • the content of each additive is preferably 0.01 to 20% by mass based on the total amount of the lubricating oil composition.
  • the kinematic viscosity at 40 ° C. of the lubricating oil composition according to this embodiment is 50 mm 2 / s or less, preferably 48 mm 2 / s or less, more preferably 45 mm 2 / s or less.
  • the lower limit value of the kinematic viscosity at 40 ° C. of the lubricating oil composition according to the present embodiment is not particularly limited, but is preferably 20 mm 2 / s or more, more preferably 30 mm 2 / s or more, and still more preferably.
  • the lubricating oil composition according to the present embodiment has sufficient extreme pressure and wear resistance capable of reducing fuel consumption, and further can reduce the coefficient of friction between metals. It can be suitably used as gear oil for a transmission, continuously variable transmission or industrial gear system, particularly as a hypoid gear oil for driving systems of automobiles and railway vehicles.
  • Examples 1 to 18 and Comparative Examples 1 to 4 As shown in Tables 1 and 2, lubricating oil compositions of Examples 1 to 18 and Comparative Examples 1 to 4 were prepared, respectively. The resulting lubricating oil composition was measured for extreme pressure properties, abrasion resistance, seizure resistance, friction resistance and oxidation stability, and the results are also shown in Tables 1 and 2.
  • Base oil A-1 Poly ⁇ -olefin [Group IV, kinematic viscosity at 40 ° C .: 19 mm 2 / s, kinematic viscosity at 100 ° C .: 4.1 mm 2 / s, viscosity index: 126, pour point: ⁇ 66 ° C., flash point : 220 ° C]
  • Base oil A-2 Poly ⁇ -olefin [Group IV, kinematic viscosity at 40 ° C .: 30.3 mm 2 / s, kinematic viscosity at 100 ° C .: 5.9 mm 2 / s, viscosity index: 142, pour point: ⁇ 54 ° C.
  • Base oil A-3 poly ⁇ -olefin [Group IV, kinematic viscosity at 40 ° C .: 48 mm 2 / s, kinematic viscosity at 100 ° C .: 8.0 mm 2 / s, viscosity index: 139, pour point: ⁇ 48 ° C., flash point : 260 ° C]
  • Base oil A-4 Poly ⁇ -olefin [Group IV, kinematic viscosity at 40 ° C .: 396 mm 2 / s, kinematic viscosity at 100 ° C .: 39 mm 2 / s, viscosity index: 147, pour point: ⁇ 36 ° C., flash point: 281 ° C]
  • Base oil A-5 hydrorefined mineral oil [Group III, kinematic viscosity at 40 ° C .: 33.97 mm 2 / s, kinematic viscosity at
  • kinematic viscosity 10.3 mm 2 / s, 100 ° C.
  • kinematic viscosity 2.9 mm 2 / s, viscosity index: 138, flow Point: -72 ° C, flash point: 220 ° C]
  • Organic molybdenum compound F-1 Molybdenum dithiocarbamate (MoDTC) [Molybdenum element conversion: 10% by mass]
  • Boron-containing dispersant G-1: Boronated succinimide [in terms of boron element: 2.0% by mass, nitrogen in terms of element: 2.3% by mass, weight average molecular weight: 1000]
  • Non-boron dispersant H-1 Succinimide [nitrogen element conversion: 2.3 mass%, weight average molecular weight: 1000]
  • Performance additive C-1 Additive package containing phosphorus-based antiwear agent, sulfur-based extreme pressure agent, metal deactivator, friction modifier, antifoaming agent, etc.
  • Viscosity modifier J-1 Copolymer of ⁇ -olefin and ⁇ , ⁇ -ethylenically unsaturated dicarboxylic acid diester [weight average molecular weight: 10,000]
  • Viscosity modifier J-2 Copolymer of ⁇ -olefin and ⁇ , ⁇ -ethylenically unsaturated dicarboxylic acid diester [weight average molecular weight: 7000]
  • Viscosity modifier J-3 oligomer of ethylene and ⁇ -olefin [number average molecular weight: 3700]
  • the molybdenum element equivalent amount in the organic molybdenum compound, the boron element equivalent amount in the boron-containing dispersant, the phosphorus element equivalent amount and the sulfur element equivalent amount in the performance additive were determined by ICP elemental analysis.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne une composition d'huile lubrifiante présentant une viscosité cinématique de 50 mm2/s à 40°C et renfermant: une huile de base d'huile lubrifiante renfermant entre 0,5% et 70% en masse d'une huile de base à base d'ester par rapport au volumer entier de l'huile de base d'huile lubrifiante, et présentant une viscosité cinématique de 18 à 28 mm2/s à 40°; et entre 100 et 1000 ppm en masse d'une composé de molybdène organique, par rapport au volume entier de la composition d'huile lubrifiante.
PCT/JP2014/077707 2013-10-18 2014-10-17 Composition d'huile lubrifiante WO2015056783A1 (fr)

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CN201480056756.6A CN105658775B (zh) 2013-10-18 2014-10-17 润滑油组合物
JP2015542903A JP6373857B2 (ja) 2013-10-18 2014-10-17 潤滑油組成物
MX2016004798A MX389203B (es) 2013-10-18 2014-10-17 Composición de aceite lubricante.
US16/591,285 US20200032159A1 (en) 2013-10-18 2019-10-02 Lubricating oil composition

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JP2021098762A (ja) * 2019-12-19 2021-07-01 Ｅｎｅｏｓ株式会社 ギヤ油組成物
WO2024019027A1 (fr) 2022-07-20 2024-01-25 Ｅｎｅｏｓ株式会社 Composition d'huile lubrifiante

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CA3112718A1 (fr) * 2020-03-20 2021-09-20 Chevron Japan Limited Composition d`huile de lubrification a faible viscosite

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WO2024019027A1 (fr) 2022-07-20 2024-01-25 Ｅｎｅｏｓ株式会社 Composition d'huile lubrifiante

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