WO2011099207A1 - 潤滑油組成物 - Google Patents

潤滑油組成物 Download PDF

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Publication number
WO2011099207A1
WO2011099207A1 PCT/JP2010/070427 JP2010070427W WO2011099207A1 WO 2011099207 A1 WO2011099207 A1 WO 2011099207A1 JP 2010070427 W JP2010070427 W JP 2010070427W WO 2011099207 A1 WO2011099207 A1 WO 2011099207A1
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WO
WIPO (PCT)
Prior art keywords
lubricating oil
mass
oil composition
kinematic viscosity
viscosity
Prior art date
Application number
PCT/JP2010/070427
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
裕 藤田
Original Assignee
出光興産株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 出光興産株式会社 filed Critical 出光興産株式会社
Priority to US13/577,532 priority Critical patent/US20120309659A1/en
Priority to KR1020127023395A priority patent/KR20120125358A/ko
Priority to CN201080063358.9A priority patent/CN102741385B/zh
Priority to EP10845798.7A priority patent/EP2535398A4/en
Publication of WO2011099207A1 publication Critical patent/WO2011099207A1/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
    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic 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
    • 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
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon 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
    • 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
    • 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
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • 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
    • C10M2215/28—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
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/046—Overbasedsulfonic acid 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • 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
    • C10M2223/047—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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/02—Unspecified siloxanes; Silicones
    • C10M2229/025—Unspecified siloxanes; Silicones 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • C10M2229/0415—Siloxanes with specific structure containing aliphatic substituents used as base material
    • 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
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/04—Molecular weight; Molecular weight distribution
    • 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
    • C10N2030/68—Shear stability
    • 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.
  • Patent Document 1 reports that a lubricating oil composition capable of maintaining the speed change characteristics for a long period of time is blended and optimized with various additives.
  • the kinematic viscosity is high, and the fatigue life when the viscosity is reduced has not been studied.
  • the viscosity index of about 150 to 250 is currently used in the market, but in order to further reduce fuel consumption, the viscosity on the low temperature side is maintained from the viewpoint of low temperature startability while maintaining the high temperature side viscosity.
  • a so-called high viscosity index that lowers the viscosity of the resin is desired.
  • the lubricating oil composition disclosed in Patent Document 2 uses polymethacrylate (PMA) as a viscosity index improver to improve the viscosity index.
  • the lubricating oil compositions disclosed in Patent Document 3 and Patent Document 4 use a high-viscosity synthetic oil (poly- ⁇ -olefin: PAO) to improve viscosity characteristics and to further improve fatigue life.
  • Copolymer (OCP) is blended.
  • an object of the present invention is to provide a lubricating oil composition that maintains the required shear stability, has excellent low-temperature viscosity characteristics, has high fuel efficiency, and can maintain a fatigue life. It is in.
  • the base oil is 5% by mass or more and 70% by mass or less based on the total amount of the composition
  • the poly- ⁇ -olefin having a kinematic viscosity at 100 ° C. of 150 mm 2 / s or more is 15% by mass or more and 30% by mass based on the total amount of the composition.
  • % Or less and a lubricating oil composition comprising:
  • lubricating oil composition wherein the kinematic viscosity at 100 ° C. of the component (A) is 0.7 mm 2 / s to 1.3 mm 2 / s, and the component (B) at 100 ° C.
  • a polymethacrylate having a kinematic viscosity of 150 mm 2 / s to 400 mm 2 / s and a mass average molecular weight of 300,000 or more is 0.1% by mass to 5.0% by mass based on the total amount of the composition, and a kinematic viscosity at 100 ° C.
  • a lubricating oil composition that maintains shear stability as before and that is excellent in low-temperature viscosity characteristics. Moreover, when this lubricating oil composition is used as a lubricating oil for a transmission or the like, fuel efficiency is high and a fatigue life can be maintained.
  • the lubricating oil composition of the present invention is characterized by blending the aforementioned components. Details will be described below.
  • the component (A) has a sulfur content of 0.03% by mass or less, and a kinematic viscosity at 100 ° C. of 0.5 mm 2 / s to 1.5 mm 2 / s, more preferably. Is formed by blending a base oil for lubricating oil of 0.7 mm 2 / s to 1.3 mm 2 / s in an amount of 5% by mass to 70% by mass based on the total amount of the composition. (A) When the sulfur content in a component exceeds 0.03 mass%, oxidation stability will worsen. If the kinematic viscosity at 100 ° C.
  • the evaporating property is significantly increased, and there is a possibility that the amount of lubricating oil consumption increases.
  • the viscosity index decreases.
  • the blending amount is less than 5% by mass, the viscosity index decreases, and when it exceeds 70% by mass, the viscosity of the lubricating oil composition decreases, and wear of mechanical parts increases when used for a transmission. Because there is a fear, it is not preferable.
  • both mineral oil and synthetic oil can be used, but mineral oil is preferred because a lower viscosity base material can be used.
  • the mineral oil is not particularly limited as long as it is generally used as a base oil for transmission lubricants.
  • a lubricating oil fraction obtained by subjecting crude oil to atmospheric distillation and reduced pressure distillation is subjected to solvent removal.
  • a paraffin type or a naphthene type that is appropriately combined with refining treatment such as solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrorefining, sulfuric acid washing, or clay treatment can be suitably used.
  • a mineral oil or a synthetic oil having a kinematic viscosity at 100 ° C. within the above range may be used alone, or two or more selected from these may be used in an arbitrary ratio. You may mix and use.
  • the lubricating oil composition of the present invention comprises, as component (B), a poly- ⁇ -olefin having a kinematic viscosity at 100 ° C. of 150 mm 2 / s or higher, more preferably 150 mm 2 / s or higher and 400 mm 2 / s or lower. 15 mass% or more and 30 mass% or less are mix
  • the kinematic viscosity at 100 ° C. is lower than 150 mm 2 / s, the viscosity index is lowered, and when used for a transmission, there is a possibility that the wear of machine parts may increase.
  • the blending amount is less than 15% by mass, the viscosity of the finished oil is lowered, and when used for a transmission, there is a possibility that wear of machine parts may increase, which is not preferable. Moreover, when there are more compounding quantities than 30 mass%, a viscosity raises and the problem that a friction loss increases may arise.
  • the lubricating oil composition of the present invention is a lubricating oil composition having excellent low-temperature viscosity characteristics while maintaining shear stability as before by blending the aforementioned component (A) and component (B). Can provide.
  • the lubricating oil composition of the present invention can be further improved in its low-temperature viscosity characteristics by further blending the following components with the aforementioned components (A) and (B).
  • silicone oil it is preferable to use one having a kinematic viscosity at 100 ° C. of 0.5 mm 2 / s to 4 mm 2 / s. If the kinematic viscosity at 100 ° C. is smaller than 0.5 mm 2 / s, the flash point of the lubricating oil composition may be significantly reduced. If it is larger than 4 mm 2 / s, the viscosity index may be lowered. This is undesirable.
  • a preferable blending amount of the silicone oil is 5% by mass or more and 50% by mass or less based on the total amount of the composition.
  • silicone oil has a high viscosity index, but has a problem in solubility.
  • the viscosity index can be improved without causing problems in solubility by blending each component in the aforementioned blending amount.
  • it is more than 50% by mass the solubility is lowered and the silicone oil may be separated or precipitated.
  • the lubricating oil composition of the present invention further contains a polymethacrylate having a mass average molecular weight of 100,000 or more.
  • Polymethacrylate is blended for the purpose of improving the viscosity index, but if the mass average molecular weight is less than 100,000, the ability to improve the viscosity index may be insufficient.
  • a preferable blending amount of the polymethacrylate is 0.1% by mass or more and 5.0% by mass or less based on the total amount of the composition. When it is less than 0.1% by mass, the viscosity index improving ability is insufficient, and when it is more than 5.0% by mass, the shear stability of the lubricating oil composition may be lowered.
  • the lubricating oil composition of the present invention further has a kinematic viscosity at 100 ° C. of 1.5 mm 2 / s to 2.5 mm 2 / s, more preferably 1.7 mm 2 / s to 2.1 mm 2 / s. It is preferable to blend the poly- ⁇ -olefin. If the kinematic viscosity at 100 ° C. is smaller than 1.5 mm 2 / s, there may be a problem that the evaporability becomes higher. If it is larger than 2.5 mm 2 / s, the viscosity of the lubricating oil composition becomes higher and the friction is increased. Loss may increase.
  • the blending amount of this PAO is preferably 0.1% by weight or more and 60% by weight or less based on the total amount of the composition, and particularly when blending more than 60% by weight, the viscosity index of the lubricating oil composition may be lowered. There is.
  • the lubricating oil composition of the present invention may further contain other additives such as detergents, ashless dispersants, antiwear agents, friction modifiers, anti-proofing agents as necessary, as long as the effects of the present invention are not impaired. You may mix
  • a preferable blending amount is about 0.01% by mass or more and 10% by mass or less based on the total amount of the composition.
  • the ashless dispersant include succinimides, boron-containing succinimides, benzylamines, boron-containing benzylamines, succinic esters, monovalent or divalent typified by fatty acids or succinic acid. Examples thereof include amides of carboxylic acids.
  • a preferable blending amount of the ashless dispersant is about 0.1% by mass or more and 20% by mass or less based on the total amount of the composition.
  • the antiwear agent examples include sulfur type antiwear agents such as thiophosphate metal salts (Zn, Pb, Sb, etc.) and thiocarbamic acid metal salts (Zn, etc.), phosphate esters (tricresyl phosphate), and the like. And phosphorus-based antiwear agents.
  • a preferable blending amount of the antiwear agent is about 0.05% by mass or more and 5% by mass or less based on the total amount of the composition.
  • the friction modifier examples include polyhydric alcohol partial esters such as neopentyl glycol monolaurate, trimethylolpropane monolaurate, and glycerin monooleate (oleic acid monoglyceride).
  • a preferable blending amount of the friction modifier is about 0.05% by mass or more and 4% by mass or less based on the composition.
  • the rust inhibitor examples include fatty acid, alkenyl succinic acid half ester, fatty acid soap, alkyl sulfonate, polyhydric alcohol fatty acid ester, fatty acid amide, oxidized paraffin, alkyl polyoxyethylene ether, and the like.
  • a preferable blending amount of the rust inhibitor is about 0.01% by mass or more and 3% by mass or less based on the total amount of the composition.
  • the metal deactivator examples include benzotriazole, benzotriazole derivatives, triazole, triazole derivatives, imidazole, imidazole derivatives, thiadiazole, and the like, and these are used alone or in combination of two or more.
  • a preferable blending amount of the metal deactivator is about 0.01% by mass or more and 5% by mass or less based on the total amount of the composition.
  • the antifoaming agent for example, a silicone compound, an ester compound, or the like is used alone or in combination of two or more.
  • a preferable blending amount of the antifoaming agent is about 0.05% by mass or more and 5% by mass or less based on the total amount of the composition.
  • the antioxidant hindered phenol-based or amine-based, zinc alkyldithiophosphate (ZnDTP) or the like is preferably used.
  • ZnDTP zinc alkyldithiophosphate
  • the phenol type bisphenol type and ester group-containing phenol type are particularly suitable.
  • As the amine system a dialkyldiphenylamine system or a naphthylamine system is suitable.
  • a preferable blending amount of the antioxidant is about 0.05% by mass or more and 7% by mass or less.
  • the lubricating oil composition of the present invention formed by blending the above components maintains the viscosity at high temperature and the viscosity after shearing at the low temperature by satisfying the above-mentioned components, blending amount, and viscosity. Viscosity can be greatly reduced. Therefore, when used as a lubricating oil composition for a transmission, the fuel consumption is high and the fatigue life can be maintained, and the durability and reliability of the machine are not impaired.
  • Example 1 The lubricating oil composition was prepared with the composition shown in Table 1, and the kinematic viscosity at 100 ° C. and ⁇ 40 ° C. and the viscosity after shearing of the prepared composition were measured by the following methods.
  • the components described in Table 1 are as follows.
  • Mineral oil-1 Mineral oil mineral oil having a sulfur content of 0.03% by mass or less, a kinematic viscosity at 100 ° C. of 1.0 mm 2 / s, and a kinematic viscosity at 40 ° C.
  • PAO-1 100 kinematic viscosity at ° C. of 300 mm 2 / s
  • PAO PAO having a kinematic viscosity at 100 ° C. of 1.8 mm 2 / s
  • PAO-3 PAO having a kinematic viscosity at 100 ° C.
  • polydimethylsiloxane PMA-1 polymethacrylate PMA-2 having a weight average molecular weight of 500,000: polymethacrylate having a weight average molecular weight of 20,000
  • additives detergent (Ca sulfonate, etc.), dispersant (succinimide, etc.) , Extreme pressure additives and antiwear agents (sulfides, phosphate compounds, phosphorus sulfide compounds, etc.), antifoaming agents, copper deactivators, etc.
  • the present invention can be used as a lubricating oil composition, and in particular, can be suitably used as a transmission lubricating oil.
PCT/JP2010/070427 2010-02-09 2010-11-17 潤滑油組成物 WO2011099207A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/577,532 US20120309659A1 (en) 2010-02-09 2010-11-17 Lubricating oil composition
KR1020127023395A KR20120125358A (ko) 2010-02-09 2010-11-17 윤활유 조성물
CN201080063358.9A CN102741385B (zh) 2010-02-09 2010-11-17 润滑油组合物
EP10845798.7A EP2535398A4 (en) 2010-02-09 2010-11-17 OIL COMPOSITION

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010026545A JP5638256B2 (ja) 2010-02-09 2010-02-09 潤滑油組成物
JP2010-026545 2010-02-09

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WO2011099207A1 true WO2011099207A1 (ja) 2011-08-18

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US (1) US20120309659A1 (ko)
EP (1) EP2535398A4 (ko)
JP (1) JP5638256B2 (ko)
KR (1) KR20120125358A (ko)
CN (1) CN102741385B (ko)
WO (1) WO2011099207A1 (ko)

Cited By (4)

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EP2535398A1 (en) 2012-12-19
CN102741385A (zh) 2012-10-17
EP2535398A4 (en) 2013-08-14
CN102741385B (zh) 2016-04-13
JP2011162652A (ja) 2011-08-25
KR20120125358A (ko) 2012-11-14
JP5638256B2 (ja) 2014-12-10
US20120309659A1 (en) 2012-12-06

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