WO2013147150A1 - 潤滑油組成物 - Google Patents
潤滑油組成物 Download PDFInfo
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- WO2013147150A1 WO2013147150A1 PCT/JP2013/059507 JP2013059507W WO2013147150A1 WO 2013147150 A1 WO2013147150 A1 WO 2013147150A1 JP 2013059507 W JP2013059507 W JP 2013059507W WO 2013147150 A1 WO2013147150 A1 WO 2013147150A1
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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
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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
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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
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/02—Specified values of viscosity or viscosity index
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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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/003—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions used as base material
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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
- 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
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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
- 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
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- 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
- C10N2020/011—Cloud point
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- 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
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- 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
- C10N2020/065—Saturated Compounds
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- 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
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- 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
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- 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
- C10N2030/08—Resistance to extreme temperature
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- 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
- C10N2030/43—Sulfur free or low sulfur content compositions
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- 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
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- 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
- C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
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- 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
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
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- 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
- C10N2040/045—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for continuous variable transmission [CVT]
Definitions
- the present invention relates to a lubricating oil composition, and in particular, a lubricating oil composition having a low coefficient of friction (traction coefficient) and excellent low-temperature fluidity, and suitable as a lubricating oil for a transmission such as a lubricating oil for an automatic transmission.
- the present invention relates to a simple lubricating oil composition.
- lubricating oils used in transmissions such as automobile transmissions are required to have higher fuel economy than ever before.
- a method for improving the fuel economy of the lubricating oil there are known a method of reducing the stirring resistance mainly by lowering the viscosity of the lubricating oil and a method of reducing the friction coefficient by reducing the friction coefficient at the sliding portion.
- reducing the viscosity of the lubricating oil it is necessary to further reduce the friction coefficient in order to achieve further fuel saving.
- decrease of the friction coefficient the method of evaluating by the traction coefficient which is a fluid friction coefficient in the elastic fluid lubrication area
- Patent Document 1 proposes a lubricating oil composition containing a partial ester of a polyhydric alcohol and a carboxylic acid as a base oil as a lubricating oil having a low traction coefficient.
- Patent Document 2 proposes a lubricating oil in which a mineral ⁇ is blended with a poly ⁇ -olefin produced using a metallocene catalyst having a kinematic viscosity at 100 ° C. of 15 mm 2 / s to 300 mm 2 / s.
- a lubricating oil that further reduces the traction coefficient, has good low-temperature fluidity, and has no risk of degrading hydrolysis stability, etc. Yes.
- the present invention is a lubricating oil composition having a low coefficient of friction (traction coefficient) and excellent low-temperature fluidity, and an object of the present invention is to provide a lubricating oil composition suitable as a transmission oil for an automatic transmission or the like. It is.
- a lubricating oil composition comprising a base oil containing a mineral oil that satisfies the following conditions (1) to (3): (1) a kinematic viscosity of 100 ° C. is 5 mm 2 / s or more 8 mm 2 / s or less (2) a viscosity index of 130 or more (3) ring analysis (n-d-M method) According% C P is more than 80 2.
- The% C P of the mineral oil 80 more than 95 or less,% C N is 5 to 20,% C
- a lubricating oil composition according to the above 1 or 2 is 1.0 or less, 4). 4.
- the lubricating oil composition according to any one of 1 to 3 above, wherein the mineral oil has a kinematic viscosity at 100 ° C. of 5.5 mm 2 / s to 7.5 mm 2 / s, 5.
- (A) Along with the mineral oil (B) [(b1) Mineral oil having a kinematic viscosity at 100 ° C. of 1.5 mm 2 / s to 4.5 mm 2 / s and a pour point of ⁇ 25 ° C. or less] and [(b2 1) to 4 above using a base oil containing at least one selected from the group consisting of a synthetic oil having a kinematic viscosity at 100 ° C.
- a lubricating oil composition having a low friction coefficient (traction coefficient) and excellent low-temperature fluidity can be provided, which is suitable as a transmission oil.
- the lubricating oil composition of the present invention is a lubricating oil composition using a base oil containing a mineral oil with a high viscosity index having a specific property and composition.
- the high viscosity index mineral oil has the following properties and compositions (1) to (3).
- the kinematic viscosity at 100 ° C. is 5 mm 2 / s or more and 8 mm 2 / s or less.
- a mineral oil having a kinematic viscosity at 100 ° C. of less than 5 mm 2 / s is used as a base oil, a sufficient oil film cannot be formed on the sliding surface, so that a lubricating oil composition having a low friction coefficient cannot be obtained.
- mineral oil having a kinematic viscosity at 100 ° C. exceeding 8 mm 2 / s is used as the base oil, energy loss due to an increase in fluid resistance increases.
- Kinematic viscosity of 100 ° C. mineral oil having a high viscosity index from such things is preferably 5.5 mm 2 / s or more 7.5 mm 2 / s or less, 6.0 mm 2 / s or more 7.0 mm 2 / More preferably, it is s or less.
- the viscosity index is 130 or more. When the viscosity index is less than 130, it is difficult to maintain an appropriate viscosity over a wide temperature range and to maintain good wear resistance and friction coefficient. Further, sufficient low temperature fluidity may not be obtained. Therefore, the viscosity index of mineral oil having a high viscosity index is preferably 135 or more, and more preferably 140 or more.
- the upper limit of the viscosity index is not particularly limited, but is preferably 160 or less from the viewpoint of maintaining good dissolution stability of the composition. If dissolution stability is good, the effect which can fully exhibit the performance which each base oil which comprises a composition has is acquired.
- % C P by ring analysis (ndM method) is 80 or more.
- % CP is less than 80, a composition having a required high viscosity index, a low coefficient of friction (traction coefficient), and excellent low temperature fluidity cannot be obtained. Therefore,% C P is preferably 83 or more, and more preferably 85 or more.
- the upper limit value of% C P is preferably 95 or less. % If C P is 95 or less,% sum of C N and% C A is with the presence of 5 or more, dissolution stability of the composition by its keeping preferable. Therefore,% C P is more preferably 90 or less.
- % C A is more preferably be 1.0 or less from the viewpoint of enhancing the oxidation stability is preferably 0.5 or less. Therefore, the composition of the mineral oil of high viscosity index is used in the present invention,% C P is 80 or more 95 or less,% C N is 5 to 20,% is preferably a C A is 1.0 or less,% C P There 80 and 90, inclusive,% C N 10 to 20,% C A is more preferably not more than 1.0.
- a high viscosity index mineral oil having such a composition a composition having a high viscosity index, a low traction coefficient, excellent low temperature fluidity, and good dissolution stability can be obtained.
- the mineral oil having a high viscosity index preferably further has the following properties.
- -Pour point is -12.5 ° C or lower, further -15.0 ° C or lower-Flash point is 240 ° C or higher-Sulfur content is 20 mass ppm or lower, further 10 mass ppm or lower
- the mineral oil having the high viscosity index used in the present invention can be produced by isomerizing a wax.
- a wax fraction such as wax or slack wax is used as a raw material wax, and this is an isomerization catalyst, for example, a catalyst in which Pt or Pd is supported on a carrier mainly composed of silica, alumina or zeolite.
- an isomerization catalyst for example, a catalyst in which Pt or Pd is supported on a carrier mainly composed of silica, alumina or zeolite.
- a catalyst in which one or more metal components selected from Ni, Co, Mo, W and the like are supported on a support mainly composed of alumina or silica.
- This isomerized product is usually further distilled under reduced pressure and, if necessary, dewaxed.
- the base oil used in the present invention is a base oil containing the above-described high viscosity index mineral oil (hereinafter referred to as “base oil A”).
- the base oil A is preferably contained in an amount of 20% by mass or more, more preferably 30% by mass or more, and particularly preferably 40% by mass or more based on the total amount of the base oil. That is, the base oil which consists only of base oil A may be sufficient.
- a composition that satisfies the effects of the base oil A described above, such as a high viscosity index and a low low friction coefficient can be obtained.
- base oil B a base oil other than the base oil A
- base oil B a base oil other than the base oil A
- one or more mineral oils may be used, one or more synthetic oils may be used, and one or more mineral oils and one or more synthetic oils may be mixed and used.
- the base oil B it is preferable to use one or more selected from (b1) a low-viscosity mineral oil and (b2) a low-viscosity synthetic oil.
- the low-viscosity mineral oil (b1) has a kinematic viscosity at 100 ° C. of 1.5 mm 2 / s to 4.5 mm 2 / s, and more preferably 2.0 mm 2 / s to 4.0 mm 2 / s.
- the low-viscosity mineral oil (b1) more preferably has a viscosity index of 90 or more, a flash point of 140 ° C. or more, and a sulfur content of 20 mass ppm or less.
- Specific examples of the low viscosity mineral oil (b1) include mineral oils such as so-called 60 neutral mineral oil and 70 neutral mineral oil. Of these, 60 neutral mineral oil is preferred because of its low pour point.
- the low viscosity synthetic oil (b2) has a kinematic viscosity at 100 ° C. of 1.5 mm 2 / s to 6.5 mm 2 / s, and more preferably 1.7 mm 2 / s to 6.2 mm 2 / s.
- the pour point is preferably ⁇ 30 ° C. or lower, more preferably ⁇ 40 ° C. or lower, and particularly preferably ⁇ 50 ° C. or lower.
- the low-viscosity synthetic oil preferably further has a viscosity index of 100 or higher and a flash point of 140 ° C. or higher.
- low viscosity synthetic oils include poly ⁇ -olefins which are ⁇ -olefin oligomers having 8 to 14 carbon atoms such as 1-decene.
- poly ⁇ -olefin a hydrogenated poly ⁇ -olefin is usually used.
- the poly ⁇ -olefin includes a poly ⁇ -olefin oligomerized using a metallocene catalyst and a hydride thereof.
- a poly ⁇ -olefin (hydride) which is an oligomer of 1-decene is preferable because it has a high viscosity index and is easily available, and particularly a poly ⁇ -olefin (hydride) obtained using a metallocene catalyst. Is preferred.
- the mixture ratio of base oil A and base oil B is a base oil whole quantity reference
- the base oil A is preferably 40% to 75% by mass
- the base oil B is preferably 25% to 60% by mass
- the base oil A is 45% to 72% by mass
- the base oil B is 28%. More preferably, the content is set in the range of mass% to 55 mass%.
- the mixing ratio is not particularly limited and can be blended at an arbitrary ratio.
- low-viscosity mineral oil in a range of 25% by mass to 75% by mass and (b2) low-viscosity synthetic oil in a range of 75% by mass to 25% by mass based on the total amount of B.
- base oil A or a base oil containing base oil A and other base oil B is used, and the composition of the base oil, that is, the base oil as a whole, is% C P 80 or more 95 or less,% C N is 5 to 20,% C A is preferably not less than 1.0. Therefore, when using base oil containing other base oil B with base oil A, it is preferable to select other base oil B so that it may become such a composition.
- the composition of the base oil,% C P 80 90, inclusive,% C N 10 to 20,% C A is more preferably 1.0 or less.
- another base oil other than the base oil A and the base oil B may be blended with the base oil containing the base oil A or the base oil A and the other base oil B.
- a lubricating oil additive can be blended as the component (C).
- the lubricating oil additive of component (C) include (c1) antioxidants, (c2) extreme pressure agents or antiwear agents, (c3) dispersants, and (c4) metallic detergents. It is preferable to blend one or more lubricating oil additives selected from among the above.
- antioxidant (c1) examples include amine-based antioxidants, phenol-based antioxidants, and sulfur-based antioxidants.
- examples of amine-based antioxidants include dialkyl (alkyl group having 1 to 20 carbon atoms) diphenylamine, phenyl, such as 4,4′-dibutyldiphenylamine, 4,4′-dioctyldiphenylamine, and 4,4′-dinonyldiphenylamine.
- naphthylamines such as - ⁇ -naphthylamine, octylphenyl- ⁇ -naphthylamine, and nonylphenyl- ⁇ -naphthylamine.
- phenolic antioxidant examples include monophenolic antioxidants such as 2,6-di-tert-butyl-4-methylphenol and 2,6-di-tert-butyl-4-ethylphenol, Examples thereof include diphenol antioxidants such as 4′-methylenebis (2,6-di-tert-butylphenol) and 2,2′-methylenebis (4-ethyl-6-tert-butylphenol).
- sulfur-based antioxidant examples include phenothiazine, pentaerythritol-tetrakis- (3-laurylthiopropionate), bis (3,5-tert-butyl-4-hydroxybenzyl) sulfide, thiodiethylenebis (3- (3,5-di-tert-butyl-4-hydroxyphenyl)) propionate, 2,6-di-tert-butyl-4- (4,6-bis (octylthio) -1,3,5-triazine-2 -Methylamino) phenol and the like.
- antioxidants may be used alone or in combination of two or more.
- the blending amount is usually selected from 0.01% by mass to 10% by mass, preferably 0.03% by mass to 5% by mass, based on the total amount of the lubricating oil composition.
- Examples of the extreme pressure agent or anti-wear agent of (c2) include sulfur-based extreme pressure agents, phosphorus-based anti-wear agents, SP-based extreme pressure agents, zinc dihydrocarbyl dithiophosphate, and thiazole-based extreme pressure agents.
- sulfur-based extreme pressure agents include sulfurized fats and oils, sulfurized fatty acids, sulfurized esters, sulfurized olefins, dihydrocarbyl polysulfides, thiadiazole compounds, alkylthiocarbamoyl compounds, thiocarbamate compounds, thioterpene compounds, and dialkylthiodipropionate compounds.
- Examples of the phosphorus-based antiwear agent include phosphate esters such as phosphate esters, acid phosphate esters, phosphite esters, and acid phosphite esters, and amine salts of these phosphate esters.
- phosphate esters such as phosphate esters, acid phosphate esters, phosphite esters, and acid phosphite esters, and amine salts of these phosphate esters.
- the SP extreme pressure agent may be one containing sulfur and phosphorus in one compound, such as a thiophosphate such as triphenylthiophosphate and lauryl trithiophosphite. You may mix and use an extreme pressure agent. When a sulfur-based extreme pressure agent and a phosphorus-based extreme pressure agent are mixed, as the sulfur-based extreme pressure agent and the phosphorus-based extreme pressure agent, those exemplified for the sulfur-based extreme pressure agent and the phosphorus-based antiwear agent are respectively used. That's fine.
- the hydrocarbyl group is a linear or branched alkyl group having 1 to 24 carbon atoms, or a linear or branched alkenyl group having 3 to 24 carbon atoms.
- the alkyl group or alkenyl group may be any of primary, secondary, and tertiary.
- Examples of the thiadiazole extreme pressure agent include 2,5-bis (n-hexyldithio) -1,3,4-thiadiazole, 2,5-bis (n-octyldithio) -1,3,4-thiadiazole, 2,5-bis (n-nonyldithio) -1,3,4-thiadiazole, 2,5-bis (1,1,3,3-tetramethylbutyldithio) -1,3,4-thiadiazole, 3,5 -Bis (n-hexyldithio) -1,2,4-thiadiazole, 3,6-bis (n-octyldithio) -1,2,4-thiadiazole, 3,5-bis (n-nonyldithio) -1, 2,4-thiadiazole, 3,5-bis (1,1,3,3-tetramethylbutyldithio) -1,2,4-thiadiazole, 4,5-bis (n-octyld
- One of these extreme pressure agents or antiwear agents may be used alone, or two or more thereof may be used in combination.
- the blending amount is usually selected from 0.01% by mass to 10% by mass, preferably 0.05% by mass to 5% by mass, based on the total amount of the lubricating oil composition.
- Examples of the dispersant (c3) include imide dispersants, amide dispersants, and ester dispersants. Specifically, for example, alkenyl group-substituted alkenyl succinimide having an average molecular weight of 1000 or more and 3500 or less and its borate, benzylamine, alkylpolyamine, and alkenyl succinate are exemplified. One of these dispersants may be used alone, or two or more thereof may be used in combination. Further, the blending amount is generally selected from 0.05% by mass to 10% by mass, preferably from 0.1% by mass to 5% by mass, based on the total amount of the lubricating oil composition.
- Examples of the metal detergent (c4) include alkaline earth metal sulfonates such as Ca, Mg, Ba, alkaline earth metal phenates, alkaline earth metal salicylates, alkaline earth metal phosphonates, and the like. These may be neutral, basic, or overbased. These metal detergents may be used alone or in combination of two or more.
- the blending amount is usually 0.05% by mass or more and 30% by mass or less, preferably 0.1% by mass or more and 10% by mass or less, based on the total amount of the lubricating oil composition.
- an oil agent a rust inhibitor, a metal deactivator, a corrosion inhibitor, a pour point depressant, an antifoaming agent, and the like can be appropriately blended.
- the total amount of the lubricating oil additive in the present invention is preferably 1 part by mass or more and 20 parts by mass or less with respect to 100 parts by mass of the total amount of the component (A) and the component (B). More preferably, it is 15 parts by mass or less.
- the lubricating oil composition of the present invention is a composition containing a lubricating oil additive as required in a base oil containing the base oil A, particularly a base oil containing the base oil A and the base oil B. .
- the viscosity index of the lubricating oil composition is preferably 160 or more, and more preferably 165 or more. Although there is no restriction
- the lubricating oil composition is an automotive automatic transmission lubricating oil composition
- the kinematic viscosity of 100 ° C. is not more than 5.58mm 2 / s or more 8mm 2 / s, 6.08mm 2 / More preferably, it is s or more and 7.0 mm 2 / s or less.
- the lubricating oil composition of the present invention is used as a lubricating oil in automobile transmissions and other transmissions.
- Other transmissions include manual transmissions, automotive gears, continuously variable transmissions, industrial gears, and the like.
- Example 1 demonstrates this invention further in detail, this invention is not limited at all by these examples.
- Example 1 to 3 and Comparative Examples 1 and 2 A lubricating oil composition having the composition shown in Table 1 was prepared using the base oil shown in Table 1, and the properties, traction coefficient and low-temperature viscosity were measured.
- the properties and performances of the mineral oil, synthetic oil and lubricating oil composition were measured by the following methods.
- ⁇ Method for measuring properties of mineral oil, synthetic oil and lubricating oil composition> (1) Kinematic viscosity Measured according to JIS K2283. (2) Viscosity index Measured according to JIS K2283. (3) Pour point Measured according to JIS K2269.
- CCS viscosity The viscosity at -30 ° C (CCS viscosity, unit: mPa ⁇ s) was measured according to JIS K2010.
- Low temperature viscosity The viscosity at -40 ° C. (BF viscosity, unit: mPa ⁇ s) was measured in accordance with ASTM D2983.
- Traction coefficient The traction coefficient was measured with the following tester and measurement conditions.
- Base oil A-1 150 neutral mineral oil, 100 ° C. kinematic viscosity: 6.4 mm 2 / s, 40 ° C. kinematic viscosity: 34.07 mm 2 / s, viscosity index: 143,% C P : 86.3,% (C N : 13.3,% C A : 0.4, pour point: -15.0 ° C, flash point: 244 ° C, sulfur content: less than 10 ppm by mass) 2) Base oil B-1 (150 neutral mineral oil, 100 ° C. kinematic viscosity: 6.5 mm 2 / s, 40 ° C.
- the lubricating oil composition using the base oil of the present invention has a high viscosity index of 160 or higher and a very low friction coefficient (traction coefficient) of 0.035 or less. Moreover, the low temperature viscosity (CCS viscosity at ⁇ 30 ° C. and BF viscosity at ⁇ 40 ° C.) is low. Therefore, it can be seen that the friction coefficient is small, the wear resistance is good, and the low temperature fluidity is also excellent (Examples 1 to 3).
- the lubricating oil composition of Comparative Example 1 using a mineral oil whose% C P does not satisfy 80 and the lubricating oil composition of Comparative Example 2 using a mineral oil that does not satisfy both% C P and the viscosity index are , Both have a high traction coefficient (0.039 and 0.042) and a low temperature viscosity. Therefore, none can achieve the object of the present invention.
- a lubricating oil composition having a low friction coefficient (traction coefficient) and excellent low-temperature fluidity can be provided. Therefore, it can be effectively used as a lubricating oil composition for transmission oil, such as an energy-saving automatic transmission oil, which can be used in a wide area including cold regions.
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Abstract
Description
潤滑油の省燃費性を高める方法は、主として潤滑油の低粘度化によって撹拌抵抗を低減する方法と摺動部分における摩擦係数を低減して摩擦損失を低減する方法が知られている。しかし、潤滑油の低粘度化には限界があることから、さらなる省燃費を実現するためには、摩擦係数をさらに低減することが必要である。そして、その摩擦係数の低減に関しては、弾性流体潤滑領域における流体摩擦係数であるトラクション係数によって評価する方法が広く行われている。つまり、トラクション係数がさらに低い潤滑油が求められている。
また、自動車用変速機などの変速機用潤滑油は、通常寒冷地など低温下でも使用されるため、低温流動性にも優れることが必要である。
また、特許文献2には、鉱油に100℃における動粘度が15mm2/s以上300mm2/s以下のメタロセン触媒を用いて製造されたポリα-オレフィンを配合した潤滑油が提案されている。しかしながら、このような潤滑油は、トラクション係数や低温流動性などに関し、さらなる改良が必要であった。
また、上記に例示した従来の潤滑油は、いずれも高粘度の合成油を使用するものであるため、潤滑油が高価格になる。したがって、比較的低価格であり、鉱油を主成分として用いる潤滑油の出現が期待されている。
1.下記の(1)~(3)の条件を満たす鉱油を含む基油を用いることを特徴とする潤滑油組成物、
(1)100℃の動粘度が5mm2/s以上8mm2/s以下
(2)粘度指数が130以上
(3)環分析(n-d-M法)による%CPが80以上
2.前記鉱油の粘度指数が160以下である上記1に記載の潤滑油組成物、
3.前記鉱油の%CPが80以上95以下、%CNが5以上20以下、%CAが1.0以下である上記1又2に記載の潤滑油組成物、
4.前記鉱油の100℃の動粘度が5.5mm2/s以上7.5mm2/s以下である上記1~3のいずれかに記載の潤滑油組成物、
5.(A)前記鉱油とともに、(B)〔(b1)100℃の動粘度が1.5mm2/s以上4.5mm2/s以下、かつ流動点が-25℃以下の鉱油〕及び〔(b2)100℃の動粘度が1.5mm2/s以上6.5mm2/s以下、かつ流動点が-30℃以下の合成油〕から選ばれる1種以上を含む基油を用いる上記1~4のいずれかに記載の潤滑油組成物、
6.基油全量基準で、(A)成分を40質量%以上75質量%以下、(B)成分を25質量%以上60質量%以下含む基油を用いる上記5に記載の潤滑油組成物、
7.基油全体の%CPが80以上95以下、%CNが5以上20以下、%CAが1.0以下である上記1~6のいずれかに記載の潤滑油組成物、
8.酸化防止剤、極圧剤もしくは摩耗防止剤、分散剤、金属系清浄剤、油性剤、防錆剤、金属不活性化剤、腐食防止剤、流動点降下剤及び消泡剤の中から選ばれる少なくとも1種の潤滑油添加剤を含む上記1~7のいずれかに記載の潤滑油組成物、
9.自動変速機用潤滑油組成物である上記1~8のいずれかに記載の潤滑油組成物、
を提供するものである。
前記高粘度指数の鉱油は、以下の(1)~(3)の性状及び組成を有するものである。
(1)100℃の動粘度が5mm2/s以上8mm2/s以下である。
100℃の動粘度が5mm2/s未満の鉱油を基油に用いた場合、摺動面に充分な油膜を形成できないため、低摩擦係数を有する潤滑油組成物が得られない。一方、100℃の動粘度が8mm2/sを超える鉱油を基油に用いた場合、流体抵抗の増大によるエネルギー損失が大きくなる。このようなことから高粘度指数の鉱油の100℃の動粘度は、5.5mm2/s以上7.5mm2/s以下であることが好ましく、6.0mm2/s以上7.0mm2/s以下であることがより好ましい。
い。
(2)粘度指数が130以上である。
粘度指数が130未満では、広い温度範囲に亘って適正な粘度を維持し、耐摩耗性や摩擦係数を良好に保つことが困難になる。また、充分な低温流動性が得られない恐れがある。したがって、高粘度指数の鉱油の粘度指数は135以上が好ましく、140以上がより好ましい。一方、粘度指数の上限に関しては、特に制限はないが、組成物の溶解安定性を良好に保つ観点から、160以下であること好ましい。溶解安定性が良好であれば、組成物を構成する各基油が有する性能を充分に発揮することができる効果が得られる。
本発明で用いる潤滑油基油の組成については、%CPが80以上であることが必要である。%CPが80未満では、必要とする高い粘度指数を有し、低い摩擦係数(トラクション係数)を示し、優れた低温流動性を有する組成物を得ることができない。したがって、%CPは83以上であることが好ましく、85以上であることがより好ましい。
一方、%CPの上限値は、95以下であることが好ましい。%CPが95以下であれば、%CNと%CAの合計が5以上存在することとなり、そのことによって組成物の溶解安定性が良好に保たれる。したがって%CPは90以下であることがより好ましい。
また、%CAは、酸化安定性を高める観点から1.0以下であることが好ましく0.5以下であることがより好ましい。
したがって、本発明で用いる高粘度指数の鉱油の組成は、%CPが80以上95以下、%CNが5以上20以下、%CAが1.0以下であるものが好ましく、%CPが80以上90以下、%CNが10以上20以下、%CAが1.0以下であるものがさらに好ましい。
このような組成を有する高粘度指数鉱油を含むことによって、粘度指数が高く、トラクション係数が低く、低温流動性に優れ、かつ良好な溶解安定性を有する組成物を得ることができる。
・流動点が、-12.5℃以下、さらには-15.0℃以下
・引火点が、240℃以上
・硫黄分が、20質量ppm以下、さらには10質量ppm以下
具体的には例えば、原料ワックスとして、ワックスもしくはスラックワックスなどのワックス留分を用い、これを異性化触媒、例えば、シリカ、アルミナ又はゼオライトを主成分とする担体にPtやPdを担持させた触媒や、アルミナやシリカを主成分とする担体にNi、Co、Mo及びW等から選択される1種以上の金属成分を担持させた触媒を用いて、通常の方法で異性化することによって得ることができる。この異性化生成物は、通常さらに減圧蒸留を行い、必要に応じて脱ろう処理を行う。
具体的には、基油全量基準で基油Aを20質量%以上含むことが好ましく、30質量%以上含むことがより好ましく、40質量%以上含むことが特に好ましい。すなわち基油Aのみからなる基油であってもよい。基油Aを基油の20質量%以上含むことによって、高粘度指数が高くや、低摩擦係数が小さいなど前記した基油Aが有する効果を満たす組成物を得ることができる。
本発明の基油は、基油Aとともに、基油A以外の他の基油(以下、「基油B」と称する)を用いることができる。基油Bとしては1種以上の鉱油を用いてもよく、1種以上の合成油を用いてもよく、1種以上の鉱油と1種以上の合成油とを混合して用いてもよい。
前記(b1)の低粘度鉱油としては、100℃の動粘度が1.5mm2/s以上4.5mm2/s以下、さらには2.0mm2/s以上4.0mm2/s以下であり、流動点が-25℃以下、さらには-27.5℃以下、特に-30℃以下の鉱油が好ましい。
(b1)の低粘度鉱油は、さらに粘度指数が90以上、引火点が140℃以上、硫黄分が20質量ppm以下であるものがより好ましい。
(b1)の低粘度鉱油の具体例としては、いわゆる60ニュートラル鉱油、70ニュートラル鉱油などの鉱油が挙げられる。中でも、流動点が低いことから60ニュートラル鉱油が好ましい。
前記低粘度合成油は、さらに粘度指数が100以上、引火点が140℃以上であるものが好ましい。
このような低粘度合成油の具体例としては、1-デセンなど炭素数8から14のα-オレフィンオリゴマーであるポリα-オレフィンが挙げられる。このポリα-オレフィンは、通常水素化したポリα-オレフィンが用いられる。
また、ポリα-オレフィンには、メタロセン触媒を用いてオリゴマー化したポリα-オレフィン及びその水素化物が含まれる。
中でも、粘度指数が高く、入手が容易である点で、1-デセンのオリゴマーであるポリα-オレフィン(水素化物)が好ましく、特にメタロセン触媒を用いて得られたポリα-オレフィン(水素化物)が好ましい。
さらに基油Bとして、(b1)低粘度鉱油と(b2)低粘度合成油とを混合して用いる場合は、その混合割合は特に制限はなく任意の割合で配合することができるが、基油B全量基準で(b1)低粘度鉱油を25質量%以上75質量%以下、(b2)低粘度合成油を75質量%以上25質量%の範囲で含むことが好ましい。
基油の組成は、%CPが80以上90以下、%CNが10以上20以下、%CAが1.0以下であることがより好ましい。
(C)成分の潤滑油添加剤としては、(c1)酸化防止剤、(c2)極圧剤もしくは摩耗防止剤、(c3)分散剤、及び(c4)金属系清浄剤などが挙げられ、これらの中から選ばれる1種又は2種以上の潤滑油添加剤を配合することが好ましい。
アミン系酸化防止剤としては、例えば、4,4’-ジブチルジフェニルアミン、4,4’-ジオクチルジフェニルアミン、4,4’-ジノニルジフェニルアミンなどのジアルキル(アルキル基の炭素数1~20)ジフェニルアミン、フェニル-α-ナフチルアミン、オクチルフェニル-α-ナフチルアミン、ノニルフェニル-α-ナフチルアミンなどのナフチルアミンなどが挙げられる。
硫黄系極圧剤としては、硫化油脂、硫化脂肪酸、硫化エステル、硫化オレフィン、ジヒドロカルビルポリサルファイド、チアジアゾール化合物、アルキルチオカルバモイル化合物、チオカーバメート化合物、チオテルペン化合物、ジアルキルチオジプロピオネート化合物などを挙げることができる。
リン系摩耗防止剤としては、リン酸エステル、酸性リン酸エステル、亜リン酸エステル、酸性亜リン酸エステルなどのリン酸エステル類、これらのリン酸エステル類のアミン塩が挙げられる。
これら極圧剤もしくは摩耗防止剤は、1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。また、その配合量は、潤滑油組成物全量基準で、通常0.01質量%以上10質量%以下、好ましくは0.05質量%以上5質量%以下で選定される。
具体的には、例えば、平均分子量1000以上3500以下のアルケニル基置換アルケニルコハク酸イミド及びそのホウ素化物、ベンジルアミン、アルキルポリアミン、アルケニルコハク酸エステルが挙げられる。
これらの分散剤は、1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。また、その配合量は、潤滑油組成物全量基準で、通常0.05質量%以上10質量%以下、好ましくは0.1質量%以上5質量%以下で選定される。
これらの金属系清浄剤は、1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。その配合量は、潤滑油組成物全量基準で、通常0.05質量%以上30質量%以下、好ましくは0.1質量%以上10質量%以下で選定される。
本発明の潤滑油組成物は、上記のとおり、基油Aを含む基油、特に基油Aと基油Bとを含む基油に必要に応じて潤滑油添加剤を含有する組成物である。
その潤滑油組成物の粘度指数は、160以上であることが好ましく、165以上であることがより好ましい。粘度指数の上限については特に制限はないが、190以下が好ましく180以下がより好ましい。
また、本発明の潤滑油組成物の動粘度については、特に制限はなく、潤滑油組成物の用途や使用条件によって、適宜選択すればよい。
例えば、潤滑油組成物が自動車用自動変速機用潤滑油組成物の場合は、100℃の動粘度が5.58mm2/s以上8mm2/s以下であることが好ましく、6.08mm2/s以上7.0mm2/s以下であることがより好ましい。
〔実施例1~3及び比較例1、2〕
第1表に示す基油を用いて第1表に示す組成の潤滑油組成物を調製し、その性状及びトラクション係数と低温粘度の測定を行った。
<鉱油、合成油及び潤滑油組成物の性状の測定方法>
(1)動粘度
JIS K2283に準拠して測定した。
(2)粘度指数
JIS K2283に準拠して測定した。
(3)流動点
JIS K2269に準拠して測定した。
<鉱油、合成油及び潤滑油組成物の性能の評価方法>
(4)組成分析
ASTM D3238に準拠して環分析(n-d-M法)による%CP、%CN、及び%CAを測定した。
JIS K2010に準拠して、-30℃における粘度(CCS粘度、単位:mPa・s)を測定した。
(6)低温粘度(BF粘度)
ASTM D2983に準拠して、-40℃における粘度(BF粘度、単位:mPa・s)を測定した。
(7)トラクション係数
下記の試験機及び測定条件で、トラクション係数を測定した。
(試験機)
Mini Traction Machine(PCS Instruments社製)
(測定条件)
・ボール :直径19.05mm、AISI 52100軸受鋼
・ディスク :直径50mm、AISI 52100軸受鋼
・転がり速度:2.0m/s
・荷重 :45N
・油温 :100℃
・すべり率(SRR):50%
1)基油A-1(150ニュートラル鉱油、100℃動粘度:6.4mm2/s、40℃動粘度:34.07mm2/s、粘度指数:143、%CP:86.3、%CN:13.3、%CA:0.4、流動点:-15.0℃、引火点:244℃、硫黄分:10質量ppm未満)
2)基油B-1(150ニュートラル鉱油、100℃動粘度:6.5mm2/s、40℃動粘度:36.82mm2/s、粘度指数:131、%CP:77.0、%CN:23.0、%CA:0.0、流動点:-12.5℃、引火点:240℃、硫黄分:10質量ppm未満)
3)基油B-2(70ニュートラル鉱油、100℃動粘度:3.1mm2/s、40℃動粘度:12.53mm2/s、粘度指数:109、%CP:77.4、%CN:22.6、%CA:0.0、流動点:-27.5℃、引火点:196℃、硫黄分:10質量ppm未満)
4)基油B-3(150ニュートラル鉱油、100℃動粘度:6.3mm2/s、40℃動粘度:35.52mm2/s、粘度指数:129、%CP:78.1、%CN:21.1、%CA:0.8、流動点:-20.0℃、引火点:252℃、硫黄分:10質量ppm未満)
5)基油B-4(60ニュートラル鉱油、100℃動粘度:2.2mm2/s、40℃動粘度:7.12mm2/s、粘度指数:109、%CP:76.2、%CN:23.7、%CA:0.1、流動点:-37.5℃、引火点:158℃、硫黄分:10質量ppm未満)
6)基油B-5(メタロセン触媒による1-デセンオリゴマー水素化物、100℃動粘度:6.0mm2/s、40℃動粘度:31.0mm2/s、粘度指数:143、%CP:100)
7)基油B-6(1-デセンオリゴマー水素化物、100℃動粘度:1.8mm2/s、40℃動粘度:5.10mm2/s、粘度指数:128、%CP:100、流動点:-70.0℃)
8)アフトンケミカル社製添加剤(製品名:「HiTEC3491K」、S系極圧剤とP系耐摩耗剤を含むパッケージ添加剤)
9)アフトンケミカル社製添加剤(製品名:「HiTEC3491A」、S系極圧剤とP系耐摩耗剤を含むパッケージ添加剤)
10)赤色着色剤
本発明の基油を用いた潤滑油組成物は、粘度指数が160以上であって高く、摩擦係数(トラクション係数)も0.035以下で極めて小さい。しかも低温粘度(-30℃のCCS粘度及び-40℃のBF粘度)が低い。したがって、摩擦係数が小さく耐摩耗性が良好であるとともに、低温流動性においても優れていることが分かる(実施例1~3)。
これに対して、%CPが80を満たさない鉱油を用いた比較例1の潤滑油組成物、及び%CP、粘度指数をともに満たさない鉱油を用いた比較例2の潤滑油組成物は、いずれもトラクション係数が高く(0.039と0.042)、低温粘度も高い。したがっていずれも本発明の目的を達成することができない。
Claims (9)
- 下記の(1)~(3)の条件を満たす鉱油を含む基油を用いることを特徴とする潤滑油組成物。
(1)100℃の動粘度が5mm2/s以上8mm2/s以下
(2)粘度指数が130以上
(3)環分析(n-d-M法)による%CPが80以上 - 前記鉱油の粘度指数が160以下である請求項1に記載の潤滑油組成物。
- 前記鉱油の%CPが80以上95以下、%CNが5以上20以下、%CAが1.0以下である請求項1又2に記載の潤滑油組成物。
- 前記鉱油の100℃の動粘度が5.5mm2/s以上7.5mm2/s以下である請求項1~3のいずれかに記載の潤滑油組成物。
- (A)前記鉱油とともに、(B)〔(b1)100℃の動粘度が1.5mm2/s以上4.5mm2/s以下、かつ流動点が-25℃以下の鉱油〕及び〔(b2)100℃の動粘度が1.5mm2/s以上6.5mm2/s以下、かつ流動点が-30℃以下の合成油〕から選ばれる1種以上を含む基油を用いる請求項1~4のいずれかに記載の潤滑油組成物。
- 基油全量基準で、前記(A)成分を40質量%以上75質量%以下、前記(B)成分を25質量%以上60質量%以下含む基油を用いる請求項5に記載の潤滑油組成物。
- 基油全体の%CPが80以上95以下、%CNが5以上20以下、%CAが1.0以下である請求項1~6のいずれかに記載の潤滑油組成物。
- 酸化防止剤、極圧剤もしくは摩耗防止剤、分散剤、金属系清浄剤、油性剤、防錆剤、金属不活性化剤、腐食防止剤、流動点降下剤、及び消泡剤の中から選ばれる少なくとも1種の潤滑油添加剤を含む請求項1~7のいずれかに記載の潤滑油組成物。
- 自動変速機用潤滑油組成物である請求項1~8のいずれかに記載の潤滑油組成物。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13768022.9A EP2837677B1 (en) | 2012-03-30 | 2013-03-29 | Lubricating oil composition |
| CN201380017622.9A CN104220573A (zh) | 2012-03-30 | 2013-03-29 | 润滑油组合物 |
| US14/389,614 US9458402B2 (en) | 2012-03-30 | 2013-03-29 | Lubricating oil composition |
| BR112014024353-0A BR112014024353B1 (pt) | 2012-03-30 | 2013-03-29 | composição de óleo lubrificante para uma transmissão automática de um automóvel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-083135 | 2012-03-30 | ||
| JP2012083135A JP5872946B2 (ja) | 2012-03-30 | 2012-03-30 | 潤滑油組成物 |
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| WO2013147150A1 true WO2013147150A1 (ja) | 2013-10-03 |
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| PCT/JP2013/059507 Ceased WO2013147150A1 (ja) | 2012-03-30 | 2013-03-29 | 潤滑油組成物 |
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| Country | Link |
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| US (1) | US9458402B2 (ja) |
| EP (1) | EP2837677B1 (ja) |
| JP (1) | JP5872946B2 (ja) |
| CN (1) | CN104220573A (ja) |
| BR (1) | BR112014024353B1 (ja) |
| WO (1) | WO2013147150A1 (ja) |
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| CN105038932A (zh) * | 2015-07-27 | 2015-11-11 | 南京巨鲨显示科技有限公司 | 润滑油及其制备方法 |
| CN106190437A (zh) * | 2016-06-30 | 2016-12-07 | 中蓝晨光化工有限公司 | 一种汽车变速箱用齿轮油 |
| WO2019118331A1 (en) | 2017-12-11 | 2019-06-20 | Valvoline Licensing And Intellectual Property Llc | Scalable synthesis of hydrogenated alpha styrene dimer |
| US10894930B2 (en) | 2019-03-13 | 2021-01-19 | Valvoline Licensing And Intellectual Property Llc | Traction fluid with improved low temperature properties |
| JP7492426B2 (ja) * | 2020-10-07 | 2024-05-29 | Eneos株式会社 | 潤滑油組成物 |
| EP4267707A1 (en) | 2020-12-23 | 2023-11-01 | The Lubrizol Corporation | Benzazepine compounds as antioxidants for lubricant compositions |
| WO2023058440A1 (ja) * | 2021-10-04 | 2023-04-13 | 出光興産株式会社 | 潤滑油組成物、潤滑方法及び変速機 |
| MX2024007550A (es) * | 2022-01-06 | 2024-07-04 | Tesla Inc | Formulaciones de fluidos de motores y cajas de cambios y usos de las mismas. |
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Also Published As
| Publication number | Publication date |
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| JP2013213116A (ja) | 2013-10-17 |
| EP2837677A1 (en) | 2015-02-18 |
| CN104220573A (zh) | 2014-12-17 |
| US20150051124A1 (en) | 2015-02-19 |
| JP5872946B2 (ja) | 2016-03-01 |
| BR112014024353B1 (pt) | 2020-12-01 |
| US9458402B2 (en) | 2016-10-04 |
| EP2837677B1 (en) | 2019-09-18 |
| EP2837677A4 (en) | 2015-11-18 |
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