WO2016157956A1 - Composition d'huile lubrifiante pour boîte à vitesses automatique - Google Patents

Composition d'huile lubrifiante pour boîte à vitesses automatique Download PDF

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Publication number
WO2016157956A1
WO2016157956A1 PCT/JP2016/051861 JP2016051861W WO2016157956A1 WO 2016157956 A1 WO2016157956 A1 WO 2016157956A1 JP 2016051861 W JP2016051861 W JP 2016051861W WO 2016157956 A1 WO2016157956 A1 WO 2016157956A1
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Prior art keywords
lubricating oil
oil composition
acid
automatic transmission
group
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English (en)
Japanese (ja)
Inventor
啓之 知念
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Eneos Corp
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JX Nippon Oil and Energy Corp
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Priority to JP2017509323A priority Critical patent/JPWO2016157956A1/ja
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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
    • 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
    • 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
    • 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
    • C10M129/78—Complex esters, i.e. compounds containing at least three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compound: monohydroxy compounds, polyhydroxy compounds, monocarboxylic acids, polycarboxylic acids, hydroxy carboxylic acids
    • C10M129/82—Complex esters, i.e. compounds containing at least three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compound: monohydroxy compounds, polyhydroxy compounds, monocarboxylic acids, polycarboxylic acids, hydroxy carboxylic acids derived from the combination of monohydroxy compounds, dihydroxy compounds and dicarboxylic acids only and having no 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
    • 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
    • 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 for a transmission, and more particularly, an automatic transmission for an automobile, continuously variable, having excellent fatigue life and extreme pressure even with low viscosity, and does not deteriorate extreme pressure performance even after long-term use.
  • the present invention relates to a lubricating oil composition for a transmission suitable for a transmission, a final reduction gear, and the like.
  • One way to save fuel in transmissions and final reduction gears is to reduce the viscosity of lubricating oil.
  • automotive automatic transmissions and continuously variable transmissions have torque converters, wet clutches, gear bearing mechanisms, oil pumps, hydraulic control mechanisms, etc.
  • final reduction gears have gear bearing mechanisms.
  • Viscosity index improvers can improve the viscosity characteristics of lubricating oils at low or practical temperatures, but are generally not expected to improve fatigue life and extreme pressure properties. When used, it is known to cause a decrease in viscosity due to shear over a long period of use.
  • compositions that can solve such problems have not been sufficiently studied so far.
  • the present invention has been made in view of such circumstances, and the purpose of the present invention is to provide a transmission (manual transmission) having a long fatigue life even with a low viscosity and sufficient extreme pressure even after initial and long-term use. Excluding lubricating oil compositions suitable for automobile automatic transmissions, continuously variable transmissions, final reduction gears, etc., having both fuel saving performance and sufficient durability such as gears and bearings It is to provide.
  • the present invention comprises (A) a lubricating base oil having a kinematic viscosity at 100 ° C. of 3.0 mm 2 / s or less, and (B) an ester having a kinematic viscosity at 100 ° C. of 500 mm 2 / s or more and 5000 mm 2 / s or less.
  • a lubricating oil composition for an automatic transmission comprising a compound in an amount of 0.1% by mass to 12.0% by mass based on the total amount of the composition.
  • the present invention is the above-mentioned lubricating oil composition for an automatic transmission, further comprising (C) a poly (meth) acrylate having a weight average molecular weight of 10,000 to 50,000.
  • the present invention is also the above automatic transmission characterized in that the kinematic viscosity at 40 ° C. is 30.0 mm 2 / s or less, the kinematic viscosity at 100 ° C. is 6.5 mm 2 / s or less, and the viscosity index is 180 or more.
  • Lubricating oil composition is also the above automatic transmission characterized in that the kinematic viscosity at 40 ° C. is 30.0 mm 2 / s or less, the kinematic viscosity at 100 ° C. is 6.5 mm 2 / s or less, and the viscosity index is 180 or more.
  • Lubricating oil composition is also the above automatic transmission characterized in that the kinematic viscosity at 40 ° C. is 30.0 mm 2 / s or less, the kinematic viscosity at 100 ° C. is 6.5 mm 2 / s or less, and the viscosity index is 180 or more.
  • the present invention is the above-mentioned lubricating oil composition for an automatic transmission, wherein (B) the ester compound is a polyester of polyhydric alcohol and polybasic acid.
  • the present invention provides the above-mentioned lubricating oil composition for an automatic transmission, wherein (B) the ester compound is a neopentyl glycol type polyester.
  • the pitching prevention life F (50) by the Unisteel fatigue life test (1.8 GPa, 120 ° C., 1410 rpm, needle bearing) is 4500 or more. It is a thing.
  • the present invention contains at least one of a cleaning dispersant, an antioxidant, an antiwear agent, a friction modifier, a rust inhibitor, a metal deactivator, a pour point depressant, and an antifoaming agent.
  • a cleaning dispersant for an automatic transmission.
  • the lubricating oil composition for an automatic transmission ensures fuel savings by lowering the viscosity in the normal temperature range (20 to 80 ° C.) and has excellent anti-pitching properties, resulting in improved component durability. Excellent. Furthermore, since it has a high viscosity index and excellent shear stability, it has excellent reliability. This is particularly effective for continuously variable transmissions.
  • the lubricating oil composition of the present invention contains a lubricating base oil having a kinematic viscosity at 100 ° C. of 3.0 mm 2 / s or less as the component (A).
  • a lubricating base oil having a kinematic viscosity at 100 ° C. of 3.0 mm 2 / s or less.
  • the lubricating base oil include a mineral lubricating base oil and a synthetic lubricating base oil.
  • a mineral oil base oil a lubricating oil fraction obtained by subjecting crude oil to atmospheric distillation and vacuum distillation is subjected to solvent removal, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrorefining.
  • paraffinic and naphthenic mineral oil base oils, normal paraffins, isoparaffins, and the like which are refined by appropriately combining purification treatments such as sulfuric acid washing and clay treatment, and the like.
  • a lubricating oil fraction obtained by subjecting crude oil to atmospheric distillation and reduced pressure distillation can be subjected to solvent removal, solvent extraction, hydrocracking, solvent removal.
  • Oils such as paraffinic and naphthenic oils that are refined by a single or a combination of two or more purification treatments such as wax, catalytic dewaxing, hydrorefining, sulfuric acid washing, and clay treatment can be used.
  • These base oils may be used alone or in combination of two or more at any ratio.
  • Preferred mineral oil base oils include the following base oils.
  • the normal refining method here is not particularly limited, and a refining method used in the production of the lubricating base oil can be arbitrarily employed.
  • conventional purification methods include (a) hydrorefining such as hydrocracking and hydrofinishing, (b) solvent purification such as furfural solvent extraction, and (c) dewaxing such as solvent dewaxing and catalytic dewaxing. And (d) white clay refining with acid clay and activated clay, and (e) chemical (acid or alkali) purification such as sulfuric acid washing and caustic soda washing. In the present invention, one or more of these can be used in any combination and in any order.
  • the mineral oil base oil used in the present invention is particularly preferably a base oil obtained by subjecting a base oil selected from the above [1] to [8] to the following treatment. That is, the base oil selected from the above [1] to [8] is used as it is, or the lubricating oil fraction recovered from this base oil is hydrocracked or wax-isomerized, and the product is used as it is or from now on.
  • Hydrocracked mineral oil and / or wax isomerized isoparaffinic base oil produced by treatment is preferably used.
  • the hydrocracked mineral oil and / or wax isomerized isoparaffin base oil is preferably 30% by mass or more, more preferably 50% by mass or more, particularly preferably 70% by mass or more, and most preferably 90% by mass based on the total amount of the base oil. % Or more is desirable.
  • Synthetic lubricating base oils include, for example, poly ⁇ -olefins or hydrides thereof, isobutene oligomers or hydrides thereof, isoparaffins, alkylbenzenes, alkylnaphthalenes, diesters (eg, ditridecylglutarate, di-2-ethylhexyl adipate, Diisodecyl adipate, ditridecyl adipate, di-2-ethylhexyl sebacate, etc.), polyol esters (eg, trimethylolpropane caprylate, trimethylolpropane pelargonate, pentaerythritol 2-ethylhexanoate, pentaerythritol pelargonate, etc.), Polyoxyalkylene glycol, dialkyl diphenyl ether, polyphenyl ether and the like can be mentioned.
  • a preferred synthetic lubricating base oil is poly ⁇ -olefin.
  • the poly ⁇ -olefin is typically an ⁇ -olefin oligomer or co-oligomer having 2 to 32 carbon atoms, preferably 6 to 16 carbon atoms (eg, 1-octene oligomer, 1-decene oligomer, ethylene-propylene co-oligomer). And hydrides thereof.
  • poly ⁇ -olefin there is no particular limitation on the production method of poly ⁇ -olefin, but for example, aluminum trichloride, boron trifluoride or boron trifluoride and water, alcohol (eg ethanol, propanol or butanol), carboxylic acid, or ester (eg acetic acid) And polymerization of ⁇ -olefin in the presence of a polymerization catalyst such as a Friedel-Crafts catalyst containing a complex with ethyl or ethyl propionate).
  • a polymerization catalyst such as a Friedel-Crafts catalyst containing a complex with ethyl or ethyl propionate.
  • the lubricating base oil may be a mixture of two or more mineral oil base oils or a mixture of two or more synthetic oil base oils. Even a mixture of these can be used. And the mixing ratio of 2 or more types of base oil in the said mixture can be chosen arbitrarily.
  • a kinematic viscosity at 100 ° C. of the lubricating base oil is required to be less 3.0 mm 2 / s, preferably not more than 2.8 mm 2 / s, more preferably at most 2.6 mm 2 / s .
  • the kinematic viscosity at 100 ° C. of (A) the lubricating base oil is preferably 0.5 mm 2 / s or higher, more preferably at least 1.0mm 2 / s, 1.2mm 2 / s or more preferable.
  • a lubricating base oil having a kinematic viscosity at 100 ° C. of 0.5 mm 2 / s or more is sufficient to form an oil film, to improve lubricity, and to reduce the base oil evaporation loss under high temperature conditions. It becomes possible to obtain a composition.
  • the viscosity index of the lubricating base oil is not particularly limited, but is preferably 80 or more, more preferably 90 or more, and particularly preferably 95 or more. By setting the viscosity index to 80 or more, it is possible to obtain a composition that is more excellent in fatigue life, extreme pressure after initial use and long-term use.
  • the upper limit is not particularly limited, but is preferably 150 or less, more preferably 140 or less, and particularly preferably 130 or less. When it exceeds 150, normal paraffin increases in the base oil, and thus low temperature fluidity tends to deteriorate, which is not preferable.
  • the lubricating oil composition of the present invention contains an ester compound having a kinematic viscosity at 100 ° C. of 500 to 5000 mm 2 / s as the component (B).
  • Component ester compounds include polyesters of polyhydric alcohols and polybasic acids.
  • the ester compound may be composed of only one type, or may be composed of a mixture of two or more types.
  • the ester compound may be a complete ester in which all the hydroxyl groups in the polyhydric alcohol are esterified, or a partial ester in which some of the hydroxyl groups are not esterified and remain as hydroxyl groups. Moreover, the complete ester by which all the carboxyl groups in a polybasic acid were esterified may be sufficient, or the partial ester which a part of carboxyl group is not esterified and remains with the carboxyl group may be sufficient.
  • Complete esters include those obtained by esterifying a hydroxyl group at the end of a polyester with a monobasic acid and those obtained by esterifying a carboxyl group with a monohydric alcohol.
  • polyhydric alcohol constituting the ester compound those having 2 to 10 valences, preferably 2 to 6 valences are usually used, which may be linear or branched, and may be saturated. It may be saturated.
  • polyhydric alcohols include ethylene glycol, propylene glycol, neopentyl glycol, glycerin, trimethylol ethane, trimethylol propane, pentaerythritol, sorbitan, and the like.
  • polyhydric alcohols having a neopentyl structure such as neopentyl glycol, trimethylolpropane, and pentaerythritol are preferable, and neopentyl glycol is particularly preferable.
  • dibasic acid and trimellitic acid having 2 to 16 carbon atoms are used, which may be linear or branched, and saturated or unsaturated. It may be.
  • polybasic acids include oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, azelaic acid, sebacic acid, dodecane-1,12-dicarboxylic acid, plasylic acid, dimer acid, phthalic acid Dibasic acids such as isophthalic acid and terephthalic acid, propylene-1,2,3-tricarboxylic acid, propane-1,2,3-tricarboxylic acid, 2-oxypropane-1,2,3-tricarboxylic acid, 4- Tribasic acids such as oxypentane-1,3,4-tricarboxylic acid, 2-oxyheptadecane-1,2,3-tricarboxylic acid, hemimellitic acid, trimelli
  • the monohydric alcohol used when esterifying the carboxyl group at the terminal of the ester compound those having 1 to 24 carbon atoms, preferably 1 to 12 carbon atoms are used, which may be linear or branched. It may be saturated or unsaturated.
  • Examples of such monohydric alcohols include methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol and the like.
  • the monohydric alcohol is preferably a monoalkyl alcohol.
  • the monobasic acid used for esterifying the hydroxyl group at the end of the ester compound is usually a fatty acid having 2 to 24 carbon atoms, which may be linear or branched, and saturated. However, it may be unsaturated.
  • monobasic acids include saturated fatty acids such as acetic acid, propionic acid, butanoic acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid and decanoic acid; acrylic acid, methacrylic acid, butenoic acid and pentenoic acid.
  • unsaturated fatty acids such as hexenoic acid.
  • the ester compound is most preferably a polyester of neopentyl glycol and a polybasic acid (neopentyl glycol type polyester).
  • the ester compound may be a complete ester or a partial ester, but a complete ester is preferred.
  • the terminal carboxyl group of the partial ester may be esterified to make a complete ester.
  • the monohydric alcohol used at this time is preferably a monoalkyl alcohol.
  • ester compound production method for example, one or more polyhydric alcohols and a mixture of a monobasic acid and a polybasic acid or a mixture of a monobasic acid ester and a polybasic acid ester are esterified.
  • a method of obtaining an ester compound by performing a transesterification and adjusting the degree of polymerization so that the kinematic viscosity at 100 ° C. is 500 to 5000 mm 2 / s can be mentioned.
  • These may contain, for example, alkylene oxide or polyalkylene oxide in the molecule.
  • the reaction is performed at 100 to 250 ° C., preferably 140 to 240 ° C. in one step or two or more steps, the unreacted substances are distilled off, the catalyst is removed, And purification by dehydration by heating under reduced pressure.
  • toluene, benzene, xylene or the like may be used as an azeotropic dehydration solvent, or an inert gas such as nitrogen may be introduced for the purpose of removing reaction water, or the reaction may be performed under reduced pressure.
  • an acidic catalyst such as sulfuric acid or paratoluenesulfonic acid
  • an alkaline catalyst such as potassium hydroxide, lithium hydroxide, or lithium acetate
  • a metal oxide such as zinc oxide
  • Kinematic viscosity at 100 ° C. of (B) an ester compound is required to be 500 ⁇ 5000mm 2 / s, preferably 600 ⁇ 4500mm 2 / s, more preferably 800 ⁇ 4000mm 2 / s, 1000 ⁇ 3500mm 2 / S is more preferable.
  • an ester compound having a kinematic viscosity at 100 ° C. in the above range excellent fatigue life, extreme pressure after initial use and long-term use can be imparted.
  • the viscosity index of the ester compound is not particularly limited, but is preferably 150 or more, more preferably 160 or more, preferably 400 or less, more preferably 300 or less, and particularly preferably 280 or less.
  • the content of the (B) ester compound needs to be 0.1% by mass or more based on the total amount of the composition in order to impart excellent fatigue life, extreme pressure after initial and long-term use, and 0 0.5 mass% or more is preferable, 1.0 mass% or more is more preferable, and 2.0 mass% or more is more preferable.
  • the lubricating oil composition of the present invention preferably contains poly (meth) acrylate (PMA) having a weight average molecular weight of 10,000 to 60,000 as the component (C).
  • poly (meth) acrylate (PMA) having a weight average molecular weight of 10,000 to 60,000
  • the (meth) acrylate here is a general term for acrylate and methacrylate
  • the poly (meth) acrylate is preferably a (meth) acrylate monomer represented by the following general formula (1) (hereinafter referred to as “monomer M-1”). ").).
  • R 1 represents hydrogen or a methyl group
  • R 2 represents a linear or branched hydrocarbon group having 1 to 750 carbon atoms.
  • the poly (meth) acrylate obtained by one kind of homopolymer of the monomer represented by the general formula (1) or copolymerization of two or more kinds is a so-called non-dispersed poly (meth) acrylate.
  • the poly (meth) acrylate is composed of the monomer M-1 represented by the general formula (1) and one or more monomers selected from the following general formulas (2) and (3) (hereinafter referred to as “monomer M-2”, respectively). And a so-called dispersed poly (meth) acrylate obtained by copolymerization of “monomer M-3”).
  • R 3 represents a hydrogen atom or a methyl group
  • R 4 represents an alkylene group having 1 to 18 carbon atoms
  • E 1 represents 1 to 2 nitrogen atoms and 0 to 2 oxygen atoms.
  • Each represents an amine residue or a heterocyclic residue
  • a represents 0 or 1.
  • R 5 represents a hydrogen atom or a methyl group
  • E 2 represents an amine residue or a heterocyclic residue containing 1 to 2 nitrogen atoms and 0 to 2 oxygen atoms.
  • hydrocarbon group having 1 to 750 carbon atoms represented by R 2 in the general formula (1) include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, and a heptyl group.
  • Octyl group nonyl group, decyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, and octadecyl group (these alkyl groups may be linear or branched) And an alkyl group such as hydride of a polymer of butadiene or isoprene.
  • alkylene group having 1 to 18 carbon atoms represented by R 4 in the general formula (2) include an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, a heptylene group, and an octylene group.
  • Specific examples of the groups represented by E 1 and E 2 in the general formulas (2) and (3) include a dimethylamino group, a diethylamino group, a dipropylamino group, a dibutylamino group, an anilino group, and a toluidino group.
  • Preferable examples of the monomer M-2 and the monomer M-3 are specifically dimethylaminomethyl methacrylate, diethylaminomethyl methacrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, 2-methyl-5-vinylpyridine, morpholinomethyl methacrylate. Morpholinoethyl methacrylate, N-vinylpyrrolidone, and mixtures thereof.
  • the weight average molecular weight of the (C) poly (meth) acrylate used in the present invention is required to be 10,000 to 60,000, preferably 15,000 to 59,000, and preferably 20,000 to 58,000. More preferred. When the weight average molecular weight is less than 10,000, it is difficult to increase the viscosity index, and when it exceeds 60,000, the viscosity is significantly lowered due to shearing, and both lead to a decrease in reliability as a lubricating oil.
  • the lubricating oil composition of the present invention contains (C) poly (meth) acrylate
  • its content is 0.5 to 20% by mass, preferably 1 to 15% by mass, based on the total amount of the composition.
  • the content exceeds 20% by mass, it is not preferable because it is difficult to maintain the initial extreme pressure property for a long period of time.
  • the lubricating oil composition of the present invention can contain any additive generally used in lubricating oils for the purpose of further improving the performance.
  • additives include metal detergents, ashless dispersants, extreme pressure agents, antioxidants, corrosion inhibitors, friction modifiers, rubber swelling agents, rust inhibitors, pour point depressants, antifoaming agents, and coloring. You may mix
  • any compound usually used as a metal detergent for lubricating oil can be used.
  • alkali metal or alkaline earth metal sulfonate, phenate, salicylate, naphthenate, etc. These compositions can be used alone or in combination of two or more.
  • alkali metal include sodium and potassium
  • examples of the alkaline earth metal include calcium and magnesium.
  • calcium or magnesium sulfonates, phenates, and salicylates are preferably used as specific metal detergents.
  • the total base number and addition amount of these metal detergents can be arbitrarily selected according to the required performance of the lubricating oil.
  • the ashless dispersant include nitrogen-containing compounds having at least one alkyl group or alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350 carbon atoms, or derivatives thereof.
  • the alkyl group or alkenyl group may be linear or branched, but is preferably a branch derived from an olefin oligomer such as propylene, 1-butene and isobutylene or a co-oligomer of ethylene and propylene.
  • An alkyl group and a branched alkenyl group One of these compounds may be used alone, or a mixture of two or more compounds in an arbitrary mixing ratio may be used.
  • Succinimide having at least one alkyl group or alkenyl group having 40 to 400 carbon atoms in the molecule, or a derivative thereof
  • At least one alkyl group or alkenyl group having 40 to 400 carbon atoms in the molecule examples include benzylamine having a derivative thereof, or (iii) a polyamine having at least one alkyl group or alkenyl group having 40 to 400 carbon atoms in the molecule, or one or more compounds selected from derivatives thereof. it can.
  • examples of the succinimide include compounds represented by the following general formula (4) or (5).
  • R 6 to R 8 each independently represents an alkyl group or an alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350 carbon atoms, and b is 1 to 5, Preferably, it represents a number from 2 to 4, and c represents a number from 0 to 4, preferably from 1 to 3.
  • the method for producing this succinimide is not limited in any way.
  • a polyolefin such as propylene oligomer, polybutene, ethylene-propylene copolymer or the like
  • maleic anhydride to obtain alkenyl succinic anhydride
  • diethylenetriamine is obtained.
  • polyamines such as triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, and the like.
  • the succinimide is added with a so-called monotype succinimide represented by the general formula (4) in which succinic anhydride is added to one end of the polyamine and succinic anhydride is added to both ends of the polyamine.
  • monotype succinimide represented by the general formula (4)
  • succinic anhydride is added to one end of the polyamine
  • succinic anhydride is added to both ends of the polyamine.
  • bis-type succinimides represented by the general formula (5), any of which can also be used as a mixture thereof.
  • examples of benzylamine include compounds represented by the following general formula (6).
  • R 9 represents an alkyl group or alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350 carbon atoms, and d represents a number of 1 to 5, preferably 2 to 4, respectively.
  • a polyolefin such as a propylene oligomer, polybutene, or ethylene-propylene copolymer is reacted with phenol to form an alkylphenol, followed by formaldehyde, diethylenetriamine, or triethylene. It can be obtained by reacting polyamines such as tetramine, tetraethylenepentamine, pentaethylenehexamine and the like by Mannich reaction.
  • examples of the polyamine include compounds represented by the following general formula (7).
  • R 10 represents an alkyl group or alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350 carbon atoms, and e represents a number of 1 to 5, preferably 2 to 4, respectively. Yes.
  • the production method of this polyamine is not limited in any way.
  • a polyolefin such as propylene oligomer, polybutene, or ethylene-propylene copolymer
  • ammonia ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylene are added thereto. It can be obtained by reacting a polyamine such as pentamine or pentaethylenehexamine.
  • any compound usually used as an extreme pressure additive for lubricating oils can be used, and examples thereof include sulfur compounds such as disulfides, sulfurized olefins, and sulfurized fats and oils. .
  • sulfur compounds such as disulfides, sulfurized olefins, and sulfurized fats and oils.
  • One or two or more compounds arbitrarily selected from these can be contained in any amount, but the content is usually 0.01 to 5.0 based on the total amount of the lubricating oil composition. It is desirable that it is mass%.
  • any phenolic compound or amine compound that is generally used in lubricating oils can be used.
  • alkylphenols such as 2,6-di-tert-butyl-4-methylphenol and bisphenols such as methylene-4,4-bisphenol (2,6-di-tert-butyl-4-methylphenol)
  • Naphthylamines such as phenyl- ⁇ -naphthylamine, dialkyldiphenylamines, zinc dialkyldithiophosphates such as zinc di-2-ethylhexyldithiophosphate, (3,5-di-tert-butyl-4-hydroxyphenyl) fatty acid
  • an ester of monovalent or polyhydric alcohol such as methanol, octadecanol, 1,6 hexadiol, neopentyl glycol, thiodiethylene glycol, triethylene glycol, pentaerythritol and the like.
  • any compound usually used as a corrosion inhibitor for lubricating oils can be used, and examples thereof include benzotriazole, tolyltriazole, and imidazole compounds.
  • any compound usually used as a friction modifier for lubricating oils can be used, but an alkyl group or alkenyl group having 6 to 30 carbon atoms, particularly a linear alkyl group having 6 to 30 carbon atoms.
  • amine compounds, fatty acid esters, fatty acid amides, fatty acid metal salts, and the like having at least one linear alkenyl group in the molecule are included.
  • succinimide and the like which are a reaction product with polyamine are also included. These include those modified with boron compounds and phosphorus compounds.
  • Examples of the amine compound include linear or branched, preferably linear aliphatic monoamines having 6 to 30 carbon atoms, linear or branched, preferably linear aliphatic polyamines, or fatty acids thereof.
  • An alkylene oxide adduct of a group amine can be exemplified.
  • Examples of the fatty acid ester include esters of linear or branched, preferably linear, fatty acids having 7 to 31 carbon atoms with aliphatic monohydric alcohols or aliphatic polyhydric alcohols.
  • Examples of the fatty acid amide include amides of linear or branched, preferably linear fatty acids having 7 to 31 carbon atoms, and aliphatic monoamines or aliphatic polyamines.
  • the fatty acid metal salt examples include an alkaline earth metal salt (magnesium salt, calcium salt, etc.) or zinc salt of a linear or branched, preferably linear fatty acid having 7 to 31 carbon atoms.
  • an alkaline earth metal salt magnesium salt, calcium salt, etc.
  • one kind or two or more kinds of compounds arbitrarily selected from these friction modifiers can be contained in any amount, but usually the content thereof is a lubricating oil composition. It is desirable that the content is 0.01 to 5.0% by mass, preferably 0.03 to 3.0% by mass.
  • any compound usually used as a seal swelling agent for lubricating oils can be used, and examples thereof include ester-based, sulfur-based, aromatic-based seal swelling agents.
  • rust inhibitor examples include alkenyl succinic acid ester, polyhydric alcohol ester, petroleum sulfonate, alkylbenzene sulfonate, dinonylnaphthalene sulfonate, and the like.
  • any compound usually used as a pour point depressant for lubricating oils can be used, but polymethacrylate pour point depressants are particularly preferred.
  • the weight average molecular weight of the pour point depressant is preferably 10,000 to 300,000, more preferably 50,000 to 200,000.
  • the content of the pour point depressant is preferably 0.05 to 20% by mass based on the total amount of the lubricating oil composition.
  • any compound that is usually used as an antifoaming agent for lubricating oils can be used.
  • silicones such as dimethyl silicone and fluorosilicone can be used. Can be mentioned.
  • One or two or more compounds arbitrarily selected from these can be contained in any amount, but the content is usually 0.001 to 0.00 on the basis of the total amount of the lubricating oil composition. It is desirable that it is 05 mass%.
  • the colorant that can be used in combination with the lubricating oil composition of the present invention is arbitrary and can be contained in any amount, but the content is usually 0.001 to 1.% based on the total amount of the lubricating oil composition. It is preferably 0% by mass.
  • Kinematic viscosity at 40 ° C. of the lubricating oil composition of the present invention is not particularly limited, it is preferably 30.0 mm 2 / s or less, more preferably 29.0mm 2 / s, 28.0mm 2 / s The following is more preferable, and 27.0 mm 2 / s or less is particularly preferable. Further preferably 13.0mm at 2 / s or greater, more preferably at least 15.0 mm 2 / s.
  • Kinematic viscosity at 100 ° C. of the lubricating oil composition of the present invention is not particularly limited, preferably not more than 6.5 mm 2 / s, more preferably not more than 6.4mm 2 / s, 6.3mm 2 / s
  • the following is more preferable, and 6.2 mm 2 / s or less is particularly preferable.
  • it is preferable that it is 4.0 mm ⁇ 2 > / s or more, and 4.5 mm ⁇ 2 > / s or more is more preferable.
  • the viscosity index of the lubricating oil composition of the present invention is not particularly limited, but is preferably 180 or more, more preferably 185 or more, still more preferably 190 or more, and particularly preferably 200 or more. As an upper limit, it is preferable that it is 500 or less, and 450 or less is more preferable.
  • the pitching prevention life F (50) by the unisteel fatigue life test of the lubricating oil composition of the present invention is preferably 4500 or more, more preferably 4550 or more, and further preferably 4600 or more.
  • the unisteel fatigue life test according to the test method defined in IP305 / 79 is performed under the conditions of a load of 1.8 GPa, a temperature of 120 ° C., a rotational speed of 1410 rpm, and a needle bearing.
  • Lubricating oil compositions having the compositions shown in Table 1 were prepared.
  • the added amount (volume%) of the base oil is based on the total amount of the base oil, and the added amount (mass%) of each additive is based on the total amount of the composition.
  • the properties of each lubricating oil composition were evaluated by the following test and listed in Table 1.

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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)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne une composition d'huile lubrifiante pour boîte à vitesses automatique qui garantit des économies en carburant par le biais d'une réduction de la viscosité dans une plage de températures normales (20 à 80 °C), et qui présente d'excellentes propriétés de prévention de la corrosion par piqûres et une excellente durabilité des composants, et présente en outre un indice de viscosité élevé et une excellente stabilité au cisaillement, la composition d'huile lubrifiante pour boîte à vitesses automatique étant caractérisée en ce qu'elle contient, par rapport à la quantité totale de la composition, de 0,1 à 12,0 % en poids de (A) une huile de base pour huile lubrifiante ayant une viscosité cinétique à 100 °C de 3,0 mm2/s ou moins et (B) un composé d'ester ayant une viscosité cinétique à 100 °C de 500 mm2/s à 5000 mm2/s.
PCT/JP2016/051861 2015-03-31 2016-01-22 Composition d'huile lubrifiante pour boîte à vitesses automatique Ceased WO2016157956A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023554047A (ja) * 2020-12-17 2023-12-26 シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ トランスミッション流体

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004069967A1 (fr) * 2003-02-07 2004-08-19 Nippon Oil Corporation Composition d'huile lubrifiante utilisee dans la transmission
JP2008208212A (ja) * 2007-02-26 2008-09-11 Nippon Oil Corp 潤滑油組成物
WO2009125551A1 (fr) * 2008-04-07 2009-10-15 新日本石油株式会社 Composition lubrifiante
JP2010037421A (ja) * 2008-08-04 2010-02-18 Nippon Oil Corp 潤滑油組成物
WO2014013975A1 (fr) * 2012-07-20 2014-01-23 Ｊｘ日鉱日石エネルギー株式会社 Composition d'huile lubrifiante pour transmission qui varie en continu
JP2014058694A (ja) * 2014-01-07 2014-04-03 Jx Nippon Oil & Energy Corp 潤滑油組成物

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0822256D0 (en) * 2008-12-05 2009-01-14 Croda Int Plc Gear oil additive

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004069967A1 (fr) * 2003-02-07 2004-08-19 Nippon Oil Corporation Composition d'huile lubrifiante utilisee dans la transmission
JP2008208212A (ja) * 2007-02-26 2008-09-11 Nippon Oil Corp 潤滑油組成物
WO2009125551A1 (fr) * 2008-04-07 2009-10-15 新日本石油株式会社 Composition lubrifiante
JP2010037421A (ja) * 2008-08-04 2010-02-18 Nippon Oil Corp 潤滑油組成物
WO2014013975A1 (fr) * 2012-07-20 2014-01-23 Ｊｘ日鉱日石エネルギー株式会社 Composition d'huile lubrifiante pour transmission qui varie en continu
JP2014058694A (ja) * 2014-01-07 2014-04-03 Jx Nippon Oil & Energy Corp 潤滑油組成物

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023554047A (ja) * 2020-12-17 2023-12-26 シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ トランスミッション流体

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