WO2012132055A1 - Composition d'huile lubrifiante - Google Patents

Composition d'huile lubrifiante Download PDF

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Publication number
WO2012132055A1
WO2012132055A1 PCT/JP2011/070814 JP2011070814W WO2012132055A1 WO 2012132055 A1 WO2012132055 A1 WO 2012132055A1 JP 2011070814 W JP2011070814 W JP 2011070814W WO 2012132055 A1 WO2012132055 A1 WO 2012132055A1
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WIPO (PCT)
Prior art keywords
lubricating oil
group
mass
composition
oil
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PCT/JP2011/070814
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English (en)
Japanese (ja)
Inventor
靖之 大沼田
紀子 阿部
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 CA2820519A priority Critical patent/CA2820519A1/fr
Priority to EP11862708.2A priority patent/EP2692841A4/fr
Priority to CN201180069358.4A priority patent/CN103443256B/zh
Priority to US14/007,120 priority patent/US20140018271A1/en
Publication of WO2012132055A1 publication Critical patent/WO2012132055A1/fr

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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
    • 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
    • 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
    • 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
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/102—Aliphatic fractions
    • C10M2203/1025—Aliphatic fractions used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids 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
    • C10M2209/084—Acrylate; Methacrylate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/08—Amides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/28—Amides; Imides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/043—Ammonium or amine salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/047—Thioderivatives not containing metallic elements
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/049—Phosphite
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • 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
    • C10N2030/06—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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/40—Low content or no content compositions
    • 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
    • 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
    • C10N2040/14—Electric or magnetic purposes
    • C10N2040/16—Dielectric; Insulating oil or insulators

Definitions

  • the present invention relates to a lubricating oil composition having excellent insulation and lubricity.
  • Various electronic control devices are used for automobile equipment. In some cases, it is used in lubricating oil, and the insulating properties of the lubricating oil are becoming important.
  • transmission lubricating oil mounted on fuel cell vehicles, electric vehicles, or hybrid vehicles, transmission / electric motor combined oil, or transmissions for devices that share a transmission and electric motor lubrication system are used. Since the applied voltage is high, the insulating properties of the lubricating oil used in these are required to be higher. Furthermore, in order to improve fuel economy performance in recent years, improvement in power transmission efficiency and reduction in size and weight have been demanded, and a higher load is applied to the transmission. For this reason, high wear resistance and seizure resistance as well as insulation have been demanded.
  • the lubricating oil for transmissions has a friction characteristic that matches the characteristics of the clutch, and a viscosity characteristic from low to high temperature, that is, a viscosity that is not affected by temperature as much as possible, so that proper hydraulic control is possible. Oxidation stability and clean dispersibility are required so that the inside of the apparatus can be kept clean so that the maintenance and control apparatus can operate properly. Furthermore, these performances generally need to be maintained over the lifetime of the device. For this reason, various additives are used in transmission lubricating oil.
  • a transmission lubricating oil a base oil selected from the group consisting of mineral oil, synthetic oil, and mixtures thereof, and 0.1 to 15.0% by mass of carbonization based on the total amount of the composition.
  • a phosphorus compound selected from the group consisting of hydrogen group-containing zinc dithiophosphate, triaryl phosphate, triaryl thiophosphate and mixtures thereof, and a volume resistivity at 80 ° C.
  • a transmission oil composition for automobiles (Patent Document 1), a group consisting of mineral oil, poly- ⁇ -olefin, hydride of poly- ⁇ -olefin, alkylbenzene, ester compounds, and mixtures thereof more selected, a base oil kinematic viscosity of 1.5 ⁇ 4.0mm 2 / s at 80 ° C., from 0.1 to 4.0 mass% in total composition weight basis, containing hydrocarbon group Zinc thiophosphate, and contains a phosphorus compound selected from the group consisting of triaryl thiophosphate, and mixtures thereof, and ashless dispersants, and the volume resistivity at 80 ° C. is at 1 ⁇ 10 8 ⁇ ⁇ m or more
  • a transmission oil composition (Patent Document 2) characterized by this is reported.
  • An object of the present invention is to provide a lubricating oil composition with improved insulation performance, wear resistance, and seizure resistance, which is superior to the prior art, while maintaining the performance required for the transmission.
  • a lubricating base oil is blended with (B) at least one phosphorus compound selected from phosphorus compounds having at least one hydroxyl group and / or thiol group, and (C) nitrogen.
  • the amount of nitrogen is less than 0.001% by mass based on the total amount of the composition, or not contained at all, and the volume resistivity at 80 ° C. is 5 ⁇ 10 8 ⁇ ⁇
  • a lubricating oil composition that is at least m.
  • the present invention also provides the lubricating oil composition as described above, wherein the hydrocarbon group of the phosphorus compound (B) has 16 or less carbon atoms.
  • the present invention is for an electric motor lubricating oil, a transmission / electric motor combined oil mounted in a fuel cell vehicle, an electric vehicle or a hybrid vehicle, or a device in which a lubricating system for a transmission and an electric motor is shared.
  • the lubricating oil composition as described above, which is used in a transmission is used in a transmission.
  • the lubricating oil composition of the present invention can improve the insulation performance, wear resistance, and seizure resistance further superior to those of the prior art while maintaining the performance necessary for lubricating transmissions and other equipment.
  • a mineral base oil and / or a synthetic base oil can be used, and two or more mineral base oils or a mixture of synthetic oil base oils can be used.
  • it may be a mixture of a mineral base oil and a synthetic base oil.
  • the mixing ratio of 2 or more types of base oil in the said mixture can be chosen arbitrarily.
  • 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 alone or in appropriate combination of two or more purification treatments such as sulfuric acid washing and clay treatment, can be mentioned. 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.
  • Distilled oil obtained by atmospheric distillation of paraffin-based crude oil and / or mixed-base crude oil obtained by atmospheric distillation of paraffin-based crude oil and / or mixed-base crude oil;
  • Vacuum distillation distillate (WVGO) of paraffin-based crude oil and / or mixed-base crude oil at atmospheric distillation residue obtained by a lubricant dewaxing step and / or a Fischer-Tropsch wax produced by a GTL process or the like
  • Mild hydrocracking treatment oil (MHC) of one or more mixed oils selected from (1) to (3) (5) A mixed oil of two or more oils selected from (1) to (4); (6) Dried oil (DAO) of (1), (2), (3), (4) or (5); (7) Mild hydrocracking treatment oil (MHC) of (6);
  • a mixed oil of two or more oils selected from (1) to (7) is used as a feedstock, and this feedstock and / or a lubricating oil fraction recovered from
  • 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 adopted.
  • 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. Collect the fraction, and then perform dewaxing treatment such as solvent dewaxing or contact dewaxing, and then solvent refining treatment, or after solvent refining treatment, dewaxing such as solvent dewaxing or contact dewaxing Hydrocracked mineral oil and / or wax isomerized isoparaffinic base oil produced by treatment is preferably used.
  • dewaxing treatment such as solvent dewaxing or contact dewaxing
  • dewaxing such as solvent dewaxing or contact dewaxing Hydrocracked mineral oil and / or wax isomerized iso
  • the hydrocracked mineral oil and / or wax isomerized isoparaffin base oil is preferably used in an amount of 30% by mass or more, more preferably 50% by mass or more, and particularly preferably 70% by mass or more based on the total amount of the base oil.
  • the lubricating base oil (A) in the lubricating oil composition of the present invention is preferably a lubricating base oil whose kinematic viscosity at 100 ° C. is adjusted to 1.5 to 4.5 mm 2 / s.
  • the component (A) specifically, one or more selected from the following (Aa) to (Ac) are preferably used in combination.
  • the kinematic viscosity at 100 ° C. is less than 1.5 to 7 mm 2 / s, preferably Is a synthetic base oil of 3.8 to 4.5 mm 2 / s
  • (A-a) ⁇ it is preferred that the% C A of the mineral base oil (A-b) is 2 or less, preferably further 1 or less, further not more than 0.5 It is particularly preferable that it is substantially 0. (A-c)% C A of substantially zero.
  • (A) a% C A of the lubricating base oil can be obtained more lubricating oil composition excellent in oxidative stability by 2 or less.
  • % C A indicates the percentage of the total number of aromatic carbon atoms determined by a method based on ASTM D 3238-85.
  • the lubricating base oils (Aa) to (Ac) are not particularly limited in their viscosity index, but the viscosity index is preferably 80 or more, more preferably 100 or more, and particularly preferably 120 or more. It is usually 200 or less, preferably 160 or less. By setting the viscosity index to 80 or more, it is possible to obtain a composition exhibiting good viscosity characteristics from a low temperature to a high temperature. On the other hand, if the viscosity index is too high, the amount of normal paraffin increases in composition and the low temperature fluidity deteriorates.
  • the mineral base oils (Aa) to (Ab) in the present invention are not particularly limited in the sulfur content, but are preferably 0.05% by mass or less, and 0.02 The content is more preferably no more than mass%, and particularly preferably no more than 0.005 mass%.
  • the sulfur content of (Ac) is substantially 0%. By reducing the sulfur content of the component (A), it is possible to obtain a composition that is more excellent in oxidative stability of the composition.
  • each of the above (Aa) to (Ac) can be used alone, but can be arbitrarily mixed and used. Among them, it is preferable to use (Aa) in combination with (Ab) and / or (Ac).
  • the content of the component (Ac) when the component (Aa) and / or the component (Ab) and the component (Ac) are used in combination is preferably 1 to It is 50% by mass, more preferably 3 to 20% by mass, still more preferably 3 to 10% by mass.
  • the kinematic viscosity at 100 ° C. of the (A) lubricating base oil in the present invention is preferably 1.5 to 4.5 mm 2 / s, more preferably 2.8 to 4.0 mm 2 / s, particularly preferably. 3.6 to 3.9 mm 2 / s.
  • the Brookfield viscosity at ⁇ 40 ° C. is 20,000 mPa ⁇ s or less).
  • the kinematic viscosity is 100 ° C. to 1.5 mm 2 / s or more, the oil film formation is sufficient, the lubricity is excellent, and the lubricating oil composition has a smaller evaporation loss of the base oil under high temperature conditions. Can be obtained.
  • Component synthetic oils include poly- ⁇ -olefins (1-octene oligomers, 1-decene oligomers, ethylene-propylene oligomers, etc.) and their hydrides, isobutene oligomers and their hydrides, isoparaffins, alkylbenzenes, Alkylnaphthalene, alkyldiphenylethane, monoisopropylbiphenyl, dimethyl silicone, diester (ditridecyl glutarate, di2-ethylhexyl adipate, diisodecyl adipate, ditridecyl adipate, di-2-ethylhexyl sebacate, etc.), polyol ester (trimethylolpropane capri Rate, trimethylolpropane pelargonate, pentaerythritol 2-ethylhexanoate, pentaerythritol pelarg
  • poly- ⁇ -olefin and its hydride, isobutene oligomer and its hydride, isoparaffin, alkylbenzene, alkylnaphthalene, alkyldiphenylethane, monoisopropylbiphenyl, dimethylsilicone, etc. have a volume resistivity of 1 ⁇ 10 at 80 ° C. It is 13 ⁇ ⁇ m or more, and can be preferably used for enhancing the insulating performance of the lubricating oil composition.
  • the ester compound generally has a volume resistivity of about 1 ⁇ 10 9 to 1 ⁇ 10 13 ⁇ ⁇ m at 80 ° C., and preferably has a remaining water and impurities sufficiently removed.
  • the volume resistivity at 80 ° C. means 24. JIS C 2101. What was measured based on (volume resistivity test) is shown.
  • synthetic oil in the present invention among the above synthetic oils, those selected from the group consisting of poly- ⁇ -olefins, poly- ⁇ -olefin hydrides, alkylbenzenes, ester compounds and mixtures thereof are preferable.
  • synthetic oils those selected from the group consisting of poly- ⁇ -olefins, poly- ⁇ -olefin hydrides, alkylbenzenes, ester compounds and mixtures thereof are preferable.
  • low temperature fluidity and low volatility can be maintained in a well-balanced condition under use conditions.
  • 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.
  • the viscosity is not particularly limited, but those having different viscosities may be combined so that the kinematic viscosity at 100 ° C. is preferably adjusted to 1.5 to 4.5 mm 2 / s. This is because a higher base oil viscosity index can be obtained by combining a high viscosity and a low viscosity.
  • (A) the lubricant base oil in the present invention is as described above, if there is a problem in fatigue life of the lubricating oil composition, solvent kinematic viscosity 20mm 2 / s ⁇ 50mm 2 / s to the base oil It is preferable to use a mixture of refined base oils. Further, (A)% C A is preferably 2 or less, and it is preferably used by mixing within a range in which the kinematic viscosity at 100 ° C. is adjusted to 1.5 to 4.5 mm 2 / s.
  • the lubricating oil composition of the present invention contains (B) at least one phosphorus compound selected from phosphorus compounds having at least one hydroxyl group and / or thiol group.
  • Examples of the (B) phosphorus compound in the present invention include a phosphorus compound represented by the general formula (1), a phosphorus compound represented by the general formula (2), an amine salt thereof, or a group thereof. It is at least one compound selected from the above.
  • X 1 , X 2 and X 3 each independently represent an oxygen atom or a sulfur atom, preferably at least one of which is oxygen, and R 1 , R 2 and R 3 are at least One is a hydrogen atom, and the other is a hydrocarbon group having 1 to 30 carbon atoms.
  • X 4 , X 5 , X 6 and X 7 are each independently an oxygen atom or a sulfur atom (one or two of X 4 , X 5 and X 6 are a single bond or (poly) oxy And at least one of them is preferably oxygen, and at least one of R 4 , R 5 and R 6 is a hydrogen atom, and the other is a hydrocarbon group having 1 to 30 carbon atoms. Show.
  • hydrocarbon group having 1 to 30 carbon atoms represented by R 1 to R 6 include an alkyl group, a cycloalkyl group, an alkenyl group, an alkyl-substituted cycloalkyl group, an aryl group, and an alkyl-substituted aryl group.
  • an arylalkyl group preferably an alkyl group having 1 to 30 carbon atoms or an aryl group having 6 to 24 carbon atoms, more preferably 3 to 18 carbon atoms, still more preferably 4 to carbon atoms. 12 alkyl groups.
  • phosphorus compound represented by General formula (1) the following phosphorus compounds can be mentioned, for example.
  • two or more of X 1 to X 3 in the general formula (1) are preferably oxygen atoms in order to further improve performance such as high-temperature cleanliness and oxidation stability.
  • Particularly preferred is an oxygen atom.
  • phosphorus compound represented by General formula (2) the following phosphorus compounds can be mentioned, for example.
  • phosphoric acid monoester having one hydrocarbon group having 1 to 30 carbon atoms, monothiophosphoric acid monoester, dithiophosphoric acid monoester, trithiophosphoric acid monoester, Tetrathiophosphoric acid monoester;
  • phosphoric acid diester having two hydrocarbon groups having 1 to 30 carbon atoms, monothiophosphoric acid diester, dithiophosphoric acid diester, trithiophosphoric acid diester, tetrathiophosphoric acid diester;
  • Phosphonic acid having 1 to 2 groups, phosphonic acid monoester, phosphonic acid diester
  • phosphorus compound having a (poly) oxyalkylene group having 1 to 4 carbon atoms
  • two or more of X 4 to X 7 in the general formula (2) are preferably oxygen atoms, and three or more More preferably, they are oxygen atoms, and it is particularly preferable that all of them are oxygen atoms.
  • One or two of X 4 , X 5 and X 6 may be a single bond or a (poly) oxyalkylene group.
  • Examples of the salt of the phosphorus compound represented by the general formula (1) or (2) include an amine compound having only ammonia, a hydrocarbon group having 1 to 30 carbon atoms or a hydroxyl group-containing hydrocarbon group in the molecule.
  • the salt which neutralized one part or all part of the remaining acidic hydrogen by making this nitrogen compound act can be mentioned.
  • Specific examples of the nitrogen compound include ammonia, monoamine, diamine, and polyamine.
  • aliphatic amines having an alkyl or alkenyl group having 10 to 20 carbon atoms such as decylamine, dodecylamine, dimethyldodecylamine, tridecylamine, heptadecylamine, octadecylamine, oleylamine, and stearylamine (these Can be straight-chain or branched).
  • At least one compound selected from the group consisting of amine salts of phosphorus compounds in which 7 is an oxygen atom one or two of X 4 , X 5 and X 6 may be a single bond or a (poly) oxyalkylene group) It is preferable that it is excellent in oxidation stability.
  • the phosphorus compound is such that all of X 4 , X 5 , X 6 and X 7 in the general formula (2) are oxygen atoms (one or two of X 4 , X 5 and X 6 are single bonds or ( A poly) oxyalkylene group), and at least one of R 4 , R 5 and R 6 is hydrogen, and the other is a phosphorus compound each independently a hydrocarbon group having 1 to 30 carbon atoms, Preferred for oxidation stability.
  • the hydrocarbon group of the phosphorus compound preferably has 16 or less carbon atoms. This is based on the fact that the volume resistivity increases as the number of carbon atoms decreases as shown in Table 1.
  • the volume resistivity is 24. of JIS C 2101. The value measured at an oil temperature of 80 ° C. in accordance with (Volume Resistivity Test) is shown. About the measurement example, all are added and dissolved in mineral oil base oil so that it may become 100 mass ppm in phosphorus element amount.
  • the content of the phosphorus compound (B) is not particularly limited, but is 0.01% by mass or more, preferably 0.02% by mass in terms of phosphorus element based on the total amount of the composition. %, Particularly preferably 0.03% by mass or more, while the content thereof is preferably 0.1% by mass or less, more preferably 0.08% by mass or less, particularly preferably 0.05% by mass or less. It is.
  • content of a phosphorus compound is less than 0.01 mass% as a phosphorus element, an effect is insufficient with respect to wear prevention property.
  • the content exceeds 0.1% by mass as the phosphorus element the insulating performance is inferior, the oxidation stability is lowered, and the aggressiveness to the sealing material is increased.
  • the lubricating oil composition of the present invention contains (C) an ashless dispersant having a functional group containing nitrogen as a dispersing group and a nitrogen content of less than 0.001% by mass based on the total amount of the composition, or not at all.
  • the lubricating oil composition of the present invention contains (B) at least one phosphorus compound selected from phosphorus compounds having at least one hydroxyl group and / or thiol group.
  • the abrasion resistance and seizure resistance of the composition are greatly improved.
  • this type of phosphorus compound coexists with (C) an ashless dispersant having a functional group containing nitrogen as a dispersing group in comparison with a phosphorus compound having no hydroxyl group and / or thiol group, the volumetric efficiency is greatly reduced. Therefore, an ashless dispersant having a functional group containing nitrogen as a dispersing group may contain less than 0.001% by mass of nitrogen based on the total amount of the composition or may contain no ash. Essential for improvement and volume resistivity.
  • Examples of the ashless dispersant having a functional group containing nitrogen as a dispersing group include succinimide, benzylamine, and polyamine having a hydrocarbon group having 40 to 400 carbon atoms.
  • these compounds do not include those in which nitrogen is modified to a structure that cannot take a salt structure with the phosphorus compound of component (B).
  • an amino group is acylated or modified with a boron compound or a sulfur compound, and does not include a structure that cannot take a salt structure with the phosphorus compound of component (B).
  • an ashless dispersant having a functional group containing nitrogen as a dispersing group contains less than 0.001% by mass of nitrogen based on the total amount of the composition
  • the phosphorus compound of component (B) and an amino group capable of taking a salt structure remain.
  • the level of the added amount is a structure or amount that gives a lubricating oil composition having a volume resistivity of 5 ⁇ 10 8 ⁇ ⁇ m or more at 80 ° C. as a composition.
  • the amount of nitrogen is less than 0.001% by mass based on the total amount of matter. More preferably, the nitrogen content is less than 0.0008% by mass based on the total amount of the composition.
  • the volume resistivity at 80 ° C. of the lubricating oil composition of the present invention is preferably 5 ⁇ 10 8 ⁇ ⁇ m or more, more preferably 6 ⁇ 10 8 ⁇ ⁇ m or more, 10 ⁇ 10 8 ⁇ . -It is especially preferable that it is m or more.
  • a viscosity index improver for the purpose of further improving the performance of the lubricating oil composition of the present invention, a viscosity index improver, an extreme pressure agent, a dispersant other than the above-described compounds, as necessary, in order to impart necessary performance, Various additives such as metal detergents, friction modifiers, antioxidants, corrosion inhibitors, rust inhibitors, anti-emulsifiers, metal deactivators, pour point depressants, seal swelling agents, antifoaming agents, and colorants May be blended alone or in combination.
  • Viscosity index improvers include non-dispersed or dispersed poly (meth) acrylate, non-dispersed or dispersed ethylene- ⁇ -olefin copolymer or hydride thereof, polyisobutylene or hydride thereof, styrene-diene Hydrogenated copolymer, styrene-maleic anhydride ester copolymer, polyalkylstyrene and (meth) acrylate monomer represented by structural formula (1) and unsaturated monomer such as ethylene / propylene / styrene / maleic anhydride And a viscosity index improver such as a copolymer can be further used.
  • the blending amount of the viscosity index improver in the lubricating oil composition of the present invention is such that the kinematic viscosity at 100 ° C. of the composition is 5 to 10 mm 2 / s, preferably 6 to 9 mm 2 / s, and the viscosity index of the composition is The amount is from 120 to 270, preferably from 150 to 250, more preferably from 170 to 220. More specifically, the blending amount is 15% by mass or less, preferably 10% by mass based on the total amount of the composition. Hereinafter, it is more preferably 8% by mass or less, 2% by mass or more, preferably 4% by mass or more, and more preferably 5% by mass or more. If it exceeds 15% by mass, the viscosity becomes too high, and if it is less than 2% by mass, a sufficient composition viscosity cannot be ensured.
  • the metal detergent examples include metal detergents such as alkaline earth metal sulfonate, alkaline earth metal phenate, and alkaline earth metal salicylate.
  • metal detergents such as alkaline earth metal sulfonate, alkaline earth metal phenate, and alkaline earth metal salicylate.
  • one or two or more compounds arbitrarily selected from the above metal-based detergents can be contained in any amount, but the content is usually 0 based on the total amount of the composition. 0.01 to 10% by mass, preferably 0.1 to 5% by mass.
  • 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, imide 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 preferably used.
  • one kind or two or more kinds of compounds arbitrarily selected from the above friction modifiers can be contained in any amount, but the content is usually 0.00 on the basis of the total amount of the composition. The content is from 01 to 5.0% by mass, preferably from 0.03 to 3.0% by 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 ( Propionic acid etc.) or (3-methyl-5-tertbutyl-4-hydroxyphenyl) fatty acid (propionic acid etc.) and mono- or polyhydric alcohols such as methanol, octanol, octadecanol, 1,6-hexadi
  • corrosion inhibitor examples include benzotriazole, tolyltriazole, thiadiazole, and imidazole compounds.
  • rust preventive examples include petroleum sulfonate, alkylbenzene sulfonate, dinonylnaphthalene sulfonate, alkenyl succinate, 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 deactivators include imidazoline, pyrimidine derivatives, alkylthiadiazoles, mercaptobenzothiazoles, benzotriazoles or derivatives thereof, 1,3,4-thiadiazole polysulfide, 1,3,4-thiadiazolyl-2,5-bis.
  • metal deactivators include imidazoline, pyrimidine derivatives, alkylthiadiazoles, mercaptobenzothiazoles, benzotriazoles or derivatives thereof, 1,3,4-thiadiazole polysulfide, 1,3,4-thiadiazolyl-2,5-bis.
  • Examples thereof include dialkyldithiocarbamate, 2- (alkyldithio) benzimidazole, and ⁇ - (o-carboxybenzylthio) propiononitrile.
  • a known pour point depressant can be arbitrarily selected as the pour point depressant depending on the lubricating base oil, but the weight average molecular weight is preferably 20,000 to 500,000, more preferably 50,000.
  • a poly (meth) acrylate of from ⁇ 300,000, particularly preferably from 80,000 to 200,000 is preferred.
  • any compound usually used as an antifoaming agent for lubricating oil can be used, and examples thereof include silicones such as dimethyl silicone and fluorosilicone. One or two or more compounds arbitrarily selected from these can be blended in any amount.
  • any compound usually used as a seal swelling agent for lubricating oils can be used, and examples thereof include ester-based, sulfur-based and aromatic-based seal swelling agents.
  • the colorant any compound that is usually used can be used, and any amount can be blended.
  • the blending amount is 0.001 to 1.0% by mass based on the total amount of the composition. is there.
  • the content is based on the total amount of the composition, and 0.005 to 5% by mass for the corrosion inhibitor, the rust inhibitor, and the demulsifier, respectively.
  • the point depressant and metal deactivator are usually selected in the range of 0.005 to 2% by mass, the seal swelling agent in the range of 0.01 to 5% by mass, and the antifoaming agent in the range of 0.0005 to 1% by mass.
  • the lubricating oil composition of the present invention is a composition having excellent anti-seizure performance and excellent insulating performance.
  • Lubricating oil, electric motor oil, transmission / electric motor in an electric motor-equipped vehicle such as an electric vehicle or a hybrid vehicle.
  • the oil can be used for a motor oil or a device oil in which a transmission and an electric motor are packaged, that is, a lubrication system for the transmission and the electric motor is shared.
  • the present invention provides the above transmission, electric motor, and apparatus including the lubricating oil composition of the present invention, or the above-described transmission, electric motor, apparatus lubrication method, and insulation by using the lubricating oil composition of the present invention.
  • a method and a cooling method can be provided.

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

Abstract

L'invention concerne, en tant que composition d'huile lubrifiante qui conserve les propriétés nécessaires pour la lubrification d'une transmission ou d'une autre machinerie tout en améliorant en outre l'état de la technique pour obtenir une excellente performance d'isolement, de résistance à la friction et de résistance au grippage, une composition d'huile lubrifiante dans laquelle (A) une base d'huile lubrifiante est mélangée avec (B) au moins un composé de phosphore sélectionné parmi les composés de phosphore ayant au moins un groupe hydroxyle et/ou un groupe thiol et (C) un dispersant sans cendre ayant des groupes fonctionnels contenant de l'azote comme base de dispersion tels que soit la teneur en azote est nulle soit la teneur en azote en termes de la quantité totale de composition est de 0,001% en masse ou moins, et la résistivité volumique électrique à 80ºC est de 5 x 108 Ω·m ou plus.
PCT/JP2011/070814 2011-03-29 2011-09-13 Composition d'huile lubrifiante WO2012132055A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2820519A CA2820519A1 (fr) 2011-03-29 2011-09-13 Composition d'huile lubrifiante
EP11862708.2A EP2692841A4 (fr) 2011-03-29 2011-09-13 Composition d'huile lubrifiante
CN201180069358.4A CN103443256B (zh) 2011-03-29 2011-09-13 润滑油组合物
US14/007,120 US20140018271A1 (en) 2011-03-29 2011-09-13 Lubricating oil composition

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JP2011-072464 2011-03-29
JP2011072464A JP5779376B2 (ja) 2011-03-29 2011-03-29 潤滑油組成物

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WO (1) WO2012132055A1 (fr)

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JP6693033B2 (ja) * 2015-03-31 2020-05-13 出光興産株式会社 電気自動車又はハイブリッド車用潤滑油組成物
US20180100120A1 (en) * 2016-10-07 2018-04-12 Exxonmobil Research And Engineering Company Method for preventing or minimizing electrostatic discharge and dielectric breakdown in electric vehicle powertrains
FR3072685B1 (fr) * 2017-10-20 2020-11-06 Total Marketing Services Composition pour refroidir et lubrifier un systeme de motorisation d'un vehicule
JP2019163407A (ja) * 2018-03-20 2019-09-26 出光興産株式会社 潤滑油用基油、及び潤滑油組成物
JP7274277B2 (ja) * 2018-10-24 2023-05-16 出光興産株式会社 潤滑油組成物
JPWO2020095969A1 (ja) 2018-11-06 2021-10-07 Ｅｎｅｏｓ株式会社 潤滑油組成物
US10819342B2 (en) 2018-12-20 2020-10-27 Samsung Electronics Co., Ltd. Low-power low-setup integrated clock gating cell with complex enable selection
FR3097872B1 (fr) * 2019-06-28 2022-01-14 Total Marketing Services Utilisation d’un composé phosphoré à titre d’additif anti-usure et extrême-pression non-corrosif dans un lubrifiant pour système de propulsion de véhicule électrique ou hybride.
US11066622B2 (en) 2019-10-24 2021-07-20 Afton Chemical Corporation Synergistic lubricants with reduced electrical conductivity
US20240101923A1 (en) * 2020-09-14 2024-03-28 Chevron Japan Ltd. Lubricating oil containing alkyl phosphonic acid
JP2022074416A (ja) * 2020-11-04 2022-05-18 Ｅｎｅｏｓ株式会社 潤滑油組成物
CN112694938A (zh) * 2020-12-28 2021-04-23 广东南油石化有限公司 一种用于电动汽车的电机油及其制备方法
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EP2692841A4 (fr) 2014-08-27
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US20140018271A1 (en) 2014-01-16
EP2692841A1 (fr) 2014-02-05
CN103443256A (zh) 2013-12-11
CN103443256B (zh) 2016-05-25
CA2820519A1 (fr) 2012-10-04

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