WO2003031544A1 - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
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- WO2003031544A1 WO2003031544A1 PCT/JP2002/010279 JP0210279W WO03031544A1 WO 2003031544 A1 WO2003031544 A1 WO 2003031544A1 JP 0210279 W JP0210279 W JP 0210279W WO 03031544 A1 WO03031544 A1 WO 03031544A1
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- lubricating 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
- C10M163/00—Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/144—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings containing hydroxy groups
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/26—Overbased carboxylic acid salts
- C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty carbon atoms]
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/086—Imides [having hydrocarbon substituents containing less than thirty carbon atoms]
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
- C10M2215/28—Amides; Imides
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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
- 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
- C10M2223/045—Metal containing thio derivatives
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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
- 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
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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
- 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
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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
- 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
- C10M2223/065—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds containing sulfur
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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
- 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
- C10N2040/045—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for continuous variable transmission [CVT]
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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
- C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
- C10N2060/14—Chemical after-treatment of the constituents of the lubricating composition by boron or a compound containing boron
Definitions
- the present invention relates to a lubricating oil composition, and more particularly, to a lubricating oil composition having excellent anti-shudder performance, maintaining the anti-shudder performance for a long period of time, and having a long fatigue life, particularly an automatic transmission and And / or a lubricating oil composition suitable for a continuously variable transmission.
- the lubricating oils used in these products have the ability to prevent pitting (defects on the lubricated surface due to damage, etc.) on the surfaces of bearings, gears, etc. while maintaining high lubrication performance, and to prolong the fatigue life. Is required.
- a control slip lock-up control
- a slip-up clutch incorporated in a torque converter is slid at a low speed.
- the engine torque can be efficiently transmitted to the transmission mechanism while improving the ride comfort by absorbing the engine torque fluctuation.
- Some continuously variable transmissions have a so-called slip control in which a wet start clutch is first slid and then engaged to smoothly start from a stopped state. Excellent anti-shudder performance for slip control of these mouth-up clutches and starting clutches and performance that maintains this anti-shudder performance for a long period of time are required.
- sulfur-based additives have excellent extreme pressure properties, but have high activity on metal surfaces, so that wear due to corrosive wear cannot be avoided, and there is a problem when used alone. .
- an object of the present invention is to provide a lubrication system that has a long fatigue life due to prevention of pitching of a transmission, a sufficient anti-shudder performance, and a performance to maintain the anti-shudder performance for a long period of time.
- An object of the present invention is to provide an oil composition, particularly a lubricating oil composition suitable for an automatic transmission and / or a continuously variable transmission.
- the present invention relates to (A) a lubricating base oil, (B) calcium salicylate having a total base number of 50 to 30 OmgKOHZg as a calcium element amount of 0.005 to 0.07 mass%, ) 0. the SP-based extreme pressure agent as the phosphorus element amount based on the total amount of the composition from 005 to 0.07 mass 0/0, (D) co Haq acid imide represented by the following general formula (3) and (4) One to two or more compounds selected from the group consisting of the compounds are 0.1 to 6 mass in terms of the total amount of the composition. /.
- (E) A lubricating oil composition comprising a boron-containing ashless dispersant in an amount of 0.001 to 0.05% by mass as a boron element based on the total amount of the composition.
- R 11 represents a linear or branched hydrocarbon group having 8 to 30 carbon atoms
- R 12 represents a hydrogen atom or a carbon atom having 1 to 30 carbon atoms.
- R 13 represents a hydrocarbon group having 1 to 4 carbon atoms
- m represents an integer of 1 to 7.
- R 14 and R 15 each independently represent a linear or branched hydrocarbon group having 8 to 30 carbon atoms
- R 16 and R 17 each represent an individual Represents a hydrocarbon group having 1 to 4 carbon atoms
- n represents an integer of 1 to 7.
- any mineral oil and Z or synthetic oil used as the base oil of ordinary lubricating oils can be used.
- mineral oils include, for example, lubricating oil fractions obtained by distilling crude oil under normal pressure and reduced pressure, and then solvent dewaxing, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrogenation.
- mineral oils include paraffinic and naphthenic oils and normal paraffins that are purified by appropriately combining one or more purification treatments such as purification, sulfuric acid washing, and clay treatment.
- Synthetic oils include, for example, poly- ⁇ -olefin (1
- (A-1) a mineral oil, a synthetic oil, or a mixture thereof having a kinematic viscosity at 100 ° C. of 2 to 6 mm 2 Zs; 2) 1 00 ° C kinematic viscosity of 1 0 ⁇ 50 mm 2 / s, preferably used in combination of two or base oils having different kinematic viscosities of heavy mineral oil of 1 5 ⁇ 45mm 2 / s Is preferred.
- 1 00 ° kinematic viscosity of the C of the base oil to a base oil obtained by mixing is preferably. 1 to 1 Omm 2 Bruno 3, more preferably. 2 to 8 mm 2 / s.
- the mixing ratio of the kinematic viscosity base oil of (A-1) and the kinematic viscosity base oil of (A_2) is 60 to 99.5 by mass ratio of (A-1): (A-2): It is preferably from 40 to 0.5, more preferably from 65 to 95:35 to 5. If the addition amount of the base oil having the kinematic viscosity of (A-2) is less than 0.5% by mass, the effect of further improving the fatigue life by mixing the heavy base oil cannot be obtained, and the addition amount is 40% by mass. Exceeding the above range may deteriorate the low-temperature fluidity of the lubricating oil and adversely affect the low-temperature startability of the transmission.
- Examples of the calcium salicylate which is the component (B) of the present invention include neutral calcium salicylate, basic calcium salicylate, carbonate overbased (super-base) calcium salicylate, borate overbased ( (Ultrabasic) calcium salicylate and mixtures thereof.
- the method for producing calcium salicylate is not particularly limited.
- the neutral (normal salt) calcium salicylate is an alkylsalicylic acid having one or two alkyl groups having 10 to 30, preferably 12 to 20, and more preferably 14 to 18 carbon atoms. It can be produced by, for example, a method of reacting with a calcium base (calcium oxide or hydroxide) in the presence or absence of sulfur element.
- alkyl group of the alkylsalicylic acid examples include a decyl group, a pendecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecyl group, an icosyl group, a henycosyl group, Examples include a docosyl group, a tricosinole group, a tetracosinole group, a pentacosyl group, a hexacosyl group, a heptacosyl group, an octacosyl group, a nonacosyl group, and a triacontyl group.
- the basic calcium salicylate can be produced by, for example, heating the neutral (normal salt) calcium salicylate and excess calcium salt or base in the presence of water.
- the carbonate overbased (ultrabasic) calcium salicylate can be produced by, for example, a method of reacting the neutral (normal salt) calcium salicylate with a calcium base in the presence of carbon dioxide gas.
- the method of reacting the neutral (normal salt) calcium salicylate with a calcium base and a boric acid compound such as boric acid or anhydrous boric acid comprises: Can be produced by a method of reacting the above-mentioned carbonate overbased (ultrabasic) calcium salicylate with a boric acid compound such as boric acid or anhydrous boric acid.
- the basicity of the component (B) is desirably a basic calcium salicylate having a total base number of 50 to 30 Omg KOHZg, preferably 70 to 25 Omg KO HZg.
- total base number means the total base number by the perchloric acid method, which is measured in accordance with JISK2501, “Petroleum products and lubricating oils-Neutralization value test method”.
- the lower limit of the content of the component (B) is 0.005% by mass, preferably 0.01% by mass, based on the total amount of the composition, while the upper limit is 0.07% by mass. , preferably, 0.06 mass 0/0.
- the content of the component (B) is less than 0.005% by mass, the friction adjusting function is insufficient, shudder prevention and maintenance life are shortened.
- the content exceeds 0.07% by mass, the calcium salt produced when the component (B) calcium salicylate is decomposed is wet friction cracking.
- the component (C) in the lubricating oil composition of the present invention is an SP type extreme pressure agent, and specifically, a phosphorus compound represented by the following general formula (1) and a phosphorus compound represented by the following general formula (2) Compounds and their salts can be mentioned. 1 1 2 2
- XR In the general formula (1), at least one of X 1 , X 2 and X 3 represents a sulfur atom and the others represent an oxygen atom.
- RR 2 and R 3 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms.
- X 4 , X 5 and X 6 each independently represent an oxygen atom or a sulfur atom.
- R 4 , R 5 and R 6 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms. .
- hydrocarbon group having 1 to 30 carbon atoms represented by R 1 to R 6 include an alkyl group, a cycloalkyl group, an alkyl group, an alkyl-substituted cycloalkyl group, an aryl group, Examples thereof include an alkyl-substituted aryl group and an arylalkyl group.
- alkyl group examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, a pendecyl group, a dodecyl group, a tridecyl group, and a tetradecyl group.
- alkyl groups such as a pentadecyl group, a hexadecyl group, a heptadecyl group, and an octadecyl group (the alkyl groups may be linear or branched).
- Examples of the cycloalkyl group include cycloalkyl groups having 5 to 7 carbon atoms, such as a cyclopentyl group, a cyclohexyl group, and a cycloheptyl group.
- Examples of the alkylcycloalkyl group include a methylcyclopentyl group, a dimethylenocyclopentyl group, a methylethylcyclopentyl group, a getylcyclopentyl group, a methylcyclohexyl group, a dimethyl / recyclohexyl group, and a methylethylopenhexyl group.
- a methylhexyl hexyl group, a methylcyclohexyl group examples of the alkyl group having 6 to 11 carbon atoms such as dimethinolecycloheptinol group, methinoleethynolecycloheptinol group, and ethynolecycloheptyl group (the substitution position of the anorecyl group with the cycloalkyl group is also arbitrary) be able to.
- alkenyl group examples include a butenyl group, a pentenyl group, a hexenyl group, a hepturyl group, an otaturyl group, a nonenyl group, a decenyl group, a pendenyl group, a dodecel group, a tridecenyl group, a tetradecenyl group, a pentadecenyl group, and a hexadecenyl group.
- alkenyl groups such as a heptadecenyl group and an octadecenyl group (the alkenyl groups may be linear or branched, and the position of the double bond is also arbitrary).
- aryl group examples include aryl groups such as a phenyl group and a naphthyl group.
- alkylaryl group examples include, for example, a trinole group, a xylyl group, an ethynolephenine group, a propinolephene-nole group, a ptinolephenine group, a pentinolephele group, a hexylphenyl group, a heptylphenyl group, and an octylphenyl group.
- C 7-18 alkylaryl groups such as phenolic groups, phenolic groups, decylfuel groups, decylphenyl groups, dodecylphenyl groups, etc.
- the alkyl group may be linear or branched, and substitution with aryl groups The position is also arbitrary).
- arylalkyl group examples include an arylalkyl group having 7 to 12 carbon atoms, such as a benzyl group, a phenylethyl group, a phenylpropynole group, a phenylbutynole group, a phenylphenolyl group, and a phenylhexynole group.
- the group may be linear or branched).
- the hydrocarbon group having 1 to 30 carbon atoms represented by R 1 ! ⁇ 6 is preferably an alkyl group having 1 to 30 carbon atoms or an aryl group having 6 to 24 carbon atoms, and more preferably.
- Preferred are alkyl groups having 4 to 20 carbon atoms, and more preferred are alkynole groups having 6 to 18 carbon atoms.
- Examples of the SP extreme pressure agent represented by the general formula (1) include the following phosphorus compounds.
- Dialkyl thiophosphites (the alkyl group may be linear or branched);
- Di ((alkyl) arinole) esters of thiophosphorus such as diphenylthiophosphite and dicresylthiophosphite;
- tripropyl thiophosphite triptyl thiophosphite, tripentyl thiophosphite, trihexyl thiophosphite, triptyl thiophosphite, triotatyl thiophosphite, trilauryl thiophosphite, etc.
- Trialkyl phosphite alkyl groups may be linear or branched
- tri (phosphoryl) aryl esters such as triphenylthiophosphite, tricresylthiophosphite, etc. ;
- Monoalkyl esters of trithiophosphoric acid such as monolauryl trithiophosphite (the alkyl group may be linear or branched); monoethyl trithiophosphite, monocresyl trithiophosphite, etc.
- two or more of X i X 3 in the above general formula (1) are preferably sulfur atoms, and more preferably all three are sulfur atoms.
- Examples of the SP type extreme pressure agent represented by the general formula (2) include the following phosphorus compounds.
- Monothiophosphoric acid monophosphates such as monopropinorethiophosphate, monopetit / rethiophosphate, monopentinorethiophosphate, monohexinorethiophosphate, monopeptinolethiophosphate, monooctylthiophosphate, monolaurinorethiophosphate, etc.
- Alkyl esters (the alkyl group may be linear or branched); mono ((alkyl) aryl) esters of thiophosphoric acid such as monophenylthiophosphate and monocresylthiophosphate;
- Alkyl group may be linear or branched
- di ((alkyl) aryl) thiophosphate such as diphenylthiophosphate and dicresylthiophosphate;
- Thiophosphoric acid such as tripropyl thiophosphate, triptyl thiophosphate, tripentyl thiophosphate, trihexyl thiophosphate, tribeptinolethiophosphate, trioctyl thiophosphate, trilauryl thiophosphate, etc.
- Trialkyl esters (the alkyl group may be linear or branched); trithiophosphoric acid such as triphenylthiophosphate, tricresylthiophosphate, etc.
- Dithiophosphoric acids such as dipropy / regiophosphate, dibuti / regiophosphate, dipentinoresithiophosphate, dihexyldithiophosphate, dibutyldithiophosphate, dioctyldithiophosphate, dilauryldithiophosphate, etc.
- Dialkyl esters alkyl groups may be linear or branched; dithiophosphoric acid dithiophosphoric acid, dicresyldithiophosphoric acid, etc.
- Alkyl groups may be linear or branched
- dithiophosphoric tri ((alkyl) aryl) esters such as triphenyldithiophosphate and tricresyldithiophosphate;
- Monoalkyl esters of trithiophosphoric acid (the alkyl group may be linear or branched); mono ((alkyl) aryl) dithiophosphates such as monophenyltrithiophosphate and monocretyltrithiophosphate;
- Dithiophosphoric acid such as dipropylate / retrithiophosphate, dibutyltrithiophosphate, dipentyltrithiophosphate, dihexynoletrithiophosphate, dibutyltrithiophosphate, dioctyltrithiophosphate, dilauryltrithiophosphate, etc.
- Dialkyl esters (the alkyl group may be linear or branched); dithio (trialkyl) aryl esters such as diphenyltrithiophosphate and dicresyltrithiophosphate;
- Trialkyl trithiophosphates such as tiltrithiophosphate, trioctyltrithiophosphate, and trilauryl trithiophosphate (the alkyl group may be linear or branched);
- trithiophosphoric acids such as trifuel trithiophosphate and tricresyl trithiophosphate Tri ((alkyl) aryl) acid;
- Dialkyl dithiophosphates (the alkyl group may be linear or branched); di ((alkyl) aryl) tetrathiophosphates such as diphenyltetrathiophosphate and dicresyltetrathiophosphate; tripropyltetrathiophosphate , Triptyl tetrathiophosphoate, tripentinole tetrathiophosphoate, trihexyl tetrathiophosphoate, triptyl tetrathiophosphoate, trioctyl tetrathiophosphoate, trila Trialkylesters such as peryltetrathiophosphate (the alkyl group may be linear or branched); tetraalkyls such as triphenyltetrathiophosphate and tricresyltetrathiophosphate Trithiophosphoric acid
- 1 to 3 of X 4 to X 6 in the general formula (2) are sulfur mosquitoes, and it is more preferable that 1 or 2 is a sulfur atom.
- the salt of the phosphorus compound represented by the general formula (1) or (2) only ammonia or a hydrocarbon group having 1 to 8 carbon atoms or a hydrocarbon group containing a hydroxy group in a phosphorus compound is contained in the molecule.
- a salt obtained by reacting a nitrogen compound such as an amine compound having the above with the compound to neutralize a part or all of the remaining oxyhydrogen can be mentioned.
- nitrogen compound examples include ammonia; monomethylamine, monoethynoleamine, monopropylamine, monobutynoleamine, monopentynoleamine, monohexylamine, monohepti / reamine, and monooctylamine.
- One or more of these components (C) can be arbitrarily compounded.
- component (C) When the component (C) is used as a lubricating oil composition for a transmission, it is possible to impart not only abrasion resistance but also optimized friction characteristics in a wet clutch at the same time.
- the content of the component (C) is at least 0.05% by mass, preferably 0.08% by mass, as a phosphorus element concentration based on the total amount of the composition.
- the content thereof is 0. and 0 7 wt% or less, preferably 0. 0 6 mass 0/0 It is as follows. The content of component (C), if less than 0.00 5 mass% elemental phosphorus, no effect on the abrasion resistance, if it exceeds 0.07% by mass,
- the component (D) in the lubricating oil composition of the present invention is a succinimide compound represented by the following general formula (3) or (4).
- R 11 represents a linear or branched hydrocarbon group having 8 to 30 carbon atoms.
- R 12 represents a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms.
- R 13 represents a hydrocarbon group having 1 to 4 carbon atoms.
- m is an integer of 1 to 7.
- R 14 and R 15 each independently represent a linear or branched hydrocarbon group having 8 to 30 carbon atoms.
- R 16 and R 17 each independently represent a hydrocarbon group having 1 to 4 carbon atoms.
- n is an integer of 1 to 7.
- R 14 ⁇ Pi R 15 of R 11 and the formula of the general formula (3) (4) these are individually 8 carbon atoms 30, preferably linear or branched C 1 2 to 25 carbon atoms Represents a branched hydrocarbon group.
- Examples of such a hydrocarbon group include an alkyl group and an alkenyl group, and an alkyl group is preferable.
- alkyl group examples include an octyl group, an otatur group, a noel group, a nonyl group, a decyl group, a decenyl group, a dodecyl group, a dodecenyl group, an octadecyl group, an otatadecenyl group, and a linear group having up to 30 carbon atoms. Or a branched alkyl group. When the number of carbon atoms of the hydrocarbon group is less than 8 or more than 30, it is difficult to obtain a sufficient shudder mono-vibration prevention effect.
- the carbon number of 8-30 A branched alkyl group is more preferred, and a branched alkyl group having 10 to 25 carbon atoms is particularly preferred.
- a lubricating oil composition exhibiting a higher torque capacity can be obtained as compared with a case where a linear alkyl group is used.
- R 13 in the general formula (3) and R 16 and R 17 in the general formula (4) each independently represent a hydrocarbon group having 1 to 4 carbon atoms.
- the hydrocarbon group having 1 to 4 include an alkylene group having 1 to 4 and preferably an alkylene group having 2 or 3 carbon atoms (an ethylene group or a propylene group).
- R 12 in the general formula (3) represents a hydrogen atom or a linear or branched hydrocarbon group having 1 to 30 carbon atoms.
- the linear or branched hydrocarbon group with carbon number 1 to 30 represented by R 12, for example, include a linear or branched alkyl group or Arukeeru group of from 1 to 30 carbon Can be.
- it is a branched alkyl or alkenyl group having 1 to 30 carbon atoms, more preferably 8 to 30 carbon atoms, and more preferably 10 to 25 carbon atoms.
- Particularly preferred is a branched alkyl group.
- n and m each represent an integer of 1 to 7, and in order to obtain a lubricating oil composition having a higher torque capacity, n and m are preferably Each is 1, 2 or 3, and particularly preferably 1.
- the succinic acid imid compound represented by the general formula (3) or (4) can be produced by a known method. For example, it can be obtained by reacting an alkyl or alkenyl succinic anhydride with a polyamine.
- a polyamine such as diethylenetriamine, triethylenetetramine, and tetraethylenepentamine is used.
- the polyamine can be obtained by gradually dropping at a temperature of preferably 140 to 175 ° C., reacting for 1 to 10 hours, preferably 2 to 6 hours, and distilling off unreacted polyamine.
- a temperature of preferably 140 to 175 ° C. reacting for 1 to 10 hours, preferably 2 to 6 hours, and distilling off unreacted polyamine.
- R 12 is a hydrocarbon group having 1 to 30 carbon atoms
- N-octadecyl-1,3-propanediamine and the above succinic anhydride may be used. React in the same way as Can be obtained by Furthermore, in the bissuccinic acid imid represented by the general formula (4), 0.5 mol of the above polyamine is added dropwise to 1 mol of the above succinic anhydride under the same conditions as above. By removing the generated water.
- a lubricating oil composition having a higher torque transmission capacity can be obtained as the component (D) as compared with the monotype succinic acid imide represented by the general formula (3).
- a bis-type succinic acid imid represented by the formula:
- the content of the component (D) is at least 0.1% by mass, and preferably at least 0.2% by mass, based on the total amount of the lubricating oil composition.
- the content of the component (D) is at most 6% by mass, preferably at most 4% by mass, based on the total amount of the lubricating oil composition.
- the content of the component is 0.1 mass. /. When the content is less than 10%, the effect of maintaining shudder prevention performance and maintaining good shifting characteristics is inferior. On the other hand, when the content of component (D) exceeds 6% by mass, the effect corresponding to the addition amount cannot be obtained. .
- the component (E) in the lubricating oil composition of the present invention is a boron-containing ashless dispersant. It is important that the component (E) of the present invention contains boron. When an ashless dispersant containing no boron is used as the component (E), fatigue such as pitting and flaking is prevented even when used in combination with the components (B), (C) and (D). However, the performance of preventing shudder cannot be sufficiently exhibited, and the object of the present invention cannot be achieved because the lubricating oil composition is inferior in wear resistance and oxidation stability.
- component (E) examples include a boron compound such as a nitrogen compound having at least one alkyl group or alkyl group having 40 to 400 carbon atoms in the molecule or a derivative thereof, such as a nitrogen compound. One or two or more arbitrarily selected from these can be blended.
- the alkyl group or the alkenyl group may be linear or branched, but is preferably, specifically, an oligomer of an olefin such as propylene, 1-butene, isobutylene, or the like, or a mixture of ethylene and propylene.
- Examples include a branched alkyl group and a branched alkenyl group derived from a co-oligomer.
- the alkyl or alkenyl group may have any number of carbon atoms, but preferably has 40 to 400, more preferably 60 to 350.
- the solubility of the compound in the lubricating base oil may decrease.
- the alkyl or alkenyl group has more than 400 carbon atoms, the lubricating oil Since the low-temperature fluidity of the composition may deteriorate, each is not preferable.
- Specific examples of the nitrogen compound or its derivative include, for example, one or more compounds selected from the following.
- (E-3) a polyamine having at least one alkyl or alkenyl group having 40 to 400 carbon atoms in the molecule, or a derivative thereof
- examples of the succinic acid imide include compounds represented by the following general formulas (5) and (6).
- R 21 represents an alkyl group or an alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350 carbon atoms, and a represents an integer of 1 to 5, preferably 2 to 4.
- R 22 and R 23 each independently represent an alkyl group or an alkenyl group having 40 to 4 ° C., preferably 60 to 350, and b represents 0 to 4 It preferably represents an integer of 1 to 3.
- the mono-type succinic acid imide represented by the general formula (5) or the bis-type succinic acid imide represented by the general formula (6) can be used alone or in combination. .
- the benzylamine includes, more specifically, a compound represented by the general formula (7).
- R 24 represents an alkyl group or alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350 carbon atoms, and c represents an integer of 1 to 5, preferably 2 to 4.
- the method for producing the benzylamine represented by the general formula (7) is not limited at all.
- a reaction of a polyolefin such as a propylene oligomer, a polybutene, or an ethylene- ⁇ -olefin copolymer with a phenol is performed. It is obtained by reacting formaldehyde with a polyamine such as diethylenetriamine, triethylenetetramamine, tetraethylenepentamine, pentaethylenehexamine or the like by Mannich reaction.
- the polyamine includes, for example, a compound represented by the general formula (8).
- R 25 represents an alkyl group or an alkyl group having 40 to 400, preferably 60 to 350 carbon atoms, and d represents 1 to 5, preferably 2 to 4 Indicates the integer of.
- the production method of the polyamine represented by the general formula (8) is not limited at all.
- a polyolefin such as propylene oligomer, polybutene, and ethylene- ⁇ -olefin copolymer
- This is obtained by reacting with ammonia, polyamines such as ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine and pentaethylenehexamine. be able to.
- the derivatives of the nitrogen compounds represented by the above (E-1) to (E-3) include, for example, monocarboxylic acids having 2 to 30 carbon atoms (such as fatty acids) )
- a polycarboxylic acid having 2 to 30 carbon atoms such as oxalic acid, phthalic acid, trimellitic acid, and pyromellitic acid is allowed to act to neutralize a part or all of the remaining amino and / or imino groups.
- amidated, so-called carboxylic acid-modified compounds sulfur-modified compounds obtained by reacting a sulfur compound with a nitrogen compound as described above, and mixtures thereof.
- the component (E) of the present invention is obtained by modifying the above-mentioned nitrogen compound or a derivative thereof with a boron compound.
- the method for modifying a nitrogen compound or a derivative thereof with a boron compound is not limited at all, and any method is possible.
- the above-mentioned nitrogen compound or a derivative thereof may be added to boric acid, borate or Examples thereof include a method in which a boron compound such as a borate ester is allowed to act to neutralize or amidate a part or all of the amino group and the Z or imino group remaining in the nitrogen compound or a derivative thereof.
- the boron compound include orthoboric acid, metaboric acid, and tetraboric acid.
- the borate include alkali metal salts, alkaline earth metal salts, and ammonium salts of boric acid. More specifically, lithium metaborate and lithium tetraborate Lithium borates such as sodium pentaborate, lithium perborate; sodium borate such as sodium metaborate, sodium diborate, sodium tetraborate, sodium pentaborate, sodium hexaborate, sodium octaborate Potassium borate such as potassium metaborate, potassium tetraborate, potassium pentaborate, potassium hexaborate, potassium octaborate; calcium metaborate, calcium diborate, tricalcium tetraborate, tetraborate (5) Calcium borate such as cane resium and calcium hexaborate; magnesium metaborate and magnesia diborate Magnesium borate such as sodium, trimagnesium te
- borate esters include Esters of an acid and preferably an alkyl alcohol having 1 to 6 carbon atoms are mentioned. More specifically, monomethyl borate, dimethyl borate, trimethyl borate, monoethyl borate, getyl borate, triethyl borate, Monopropyl borate, dipropyl borate, tripropyl borate, monobutyl borate, dibutyl borate, tributyl borate and the like.
- the boron content in the component (E) is optional, but is 0.2 mass in order to obtain a long fatigue life and good wear resistance. / 0 or more, more preferably 0.4 % by mass or more, while the content is preferably 4% by mass or less, more preferably 2.5% by mass. is there.
- the above-mentioned (E-1) an alkyl group or an alkenyl group having 40 to 400 carbon atoms in the molecule is particularly preferred because of its excellent effect of improving fatigue life and improving wear resistance.
- a succinic acid imid having at least one or a derivative thereof is used as a nitrogen-containing compound, which is modified with a boron compound, or a mixture thereof.
- the content of the component (E) is 0.001% by mass or more, preferably 0.002% by mass, as a boron element amount based on the total amount of the lubricating oil composition. / 0 or more.
- the content is 0.05% by mass or less, preferably 0.03% by mass or less, as the boron element amount based on the total amount of the lubricating oil composition.
- the content of the component is 0.001 mass. /. If the content is less than 30, the effect of preventing the pitching and flaking by the component (E) is poor, while the content of the component (E) is 0.0.
- Known lubricating oil additives can be added to the lubricating oil composition of the present invention for the purpose of further enhancing the performance as a lubricating oil.
- additives that can be added include, for example,
- (L) antifoaming agents (M) antistatic agents, (N) corrosion inhibitors, (O) pour point depressants, and (P) rubber swelling agents. These can be used alone or in combination Can be.
- Examples of the phosphorus-based extreme pressure agent include zinc alkyldithiophosphate, phosphoric acid, phosphorous acid, phosphoric acid monoesters, phosphoric diesters, phosphoric acid triesters, phosphorous acid monoesters, and phosphorous acid monoesters. Phosphoric diesters, phosphite triesters, salts of (sub) phosphoric esters, and mixtures thereof.
- those excluding phosphoric acid and phosphorous acid are compounds containing a hydrocarbon group having usually 2 to 30 carbon atoms, preferably 3 to 20 carbon atoms.
- hydrocarbon group having 2 to 30 carbon atoms examples include an ethyl group, a propyl group, a butyl group, a pentyl group, a hexynole group, a heptyl group, an octynole group, a nor group, a decyl group, and a decyl group.
- methylcyclopentyl group dimethinolecyclopentyl group, pentinole group in methinoleethynolec mouth, pentinole group in getylsick mouth, meth / lecyclohexyl group, dimethylcyclohexyl group, methinolethynolecyclohexynole Alkyl groups having 6 to 11 carbon atoms (e.g., alkyl groups) such as a group, a ethynolecyclohexyl group, a methylcycloheptyl group, a dimethylcycloheptyl group, a methylenoethynolecycloheptyl group, and a ethynolecycloheptinol group.
- alkyl groups such as a group, a ethynolecyclohexyl group, a methylcycloheptyl group, a dimethylcycloheptyl group, a
- Aryl groups such as phenyl, naphthyl, etc .: tolyl, xylyl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, pentylphenyl, etc.
- An alkylaryl group of the formulas 7 to 18 (the alkyl group may be linear or branched, and the substitution position on the aryl group is arbitrary); benzyl group, phenylethyl group, phenylpropyl group, Aralkyl groups having 7 to 12 carbon atoms, such as a phenylbutyl group, a phenylpentyl group, and a phenylhexyl group (the alkyl groups may be linear or branched); and the like.
- Examples of preferred compounds as the phosphorus-based extreme pressure agent include phosphoric acid; phosphorous acid; zinc dipropyldithiophosphate, zinc dibutyldithiophosphate, zinc dipentyldithiophosphate, zinc dihexyldithiophosphate, Zinc alkyldithiophosphates such as zinc heptyldithiophosphate and zinc octyldithiophosphate (the alkyl group may be linear or branched); monopropyl phosphate, monobutyl phosphate, mono-pentinole Monoalkyl phosphates such as phosphate, monohexynolephosphate, monopeptinolephosphate and monooctyl phosphate (the alkyl group may be linear or branched); phosphorus such as monophenyl phosphate and monocresyl phosphate Acid mono (alkyl) aryl esters; dipropylphosphine Dialkyl
- Trialkyl phosphates such as phosphates (the alkyl group may be linear or branched); Tri (alkyl) aryl phosphates such as triphenyl phosphate and tricresyl phosphate; monopropynole phosphates , Thing Monoalkyl phosphites such as tinolephosphite, monopentinophosphite, monohexynolephosphite, monobutylphosphite, and monooctylphosphite (the alkyl group may be linear or branched) ); Mono (alkyl) aryl esters of phosphite such as monophenyl phosphite and monomethyl resyl phosphite; dipropyl phosphite, dibutinole phosphite, dipentinole phosphite, dihexinole phosphite Dialkyl phos
- salts of the above-mentioned (sub) phosphoric acid esters include, for example, monoester phosphate, diester phosphate, monoester phosphite, diester phosphite, etc. Salts in which a part or all of the remaining acidic hydrogen is neutralized by the action of a nitrogen compound such as an amine compound containing only a hydrocarbon group or a hydroxyl group-containing hydrocarbon group of 8 in the molecule can be exemplified.
- nitrogen compound examples include: ammonia; monomethylamine, monoethynoleamine, monopropynoleamine, monobutylamine, monopentylamine, monohexylamine, monoheptylamine, monooctylamine, dimethylamine, methinolethinoamine.
- Alkylamines such as Reamine, Detinoleamine, Methylpropynoleamine, Ethylpropynoleamine, Dipropylamine, Methylbutyl / reamine, Ethylptylamine, Poutine pinolebutylamine, Diptylamine, Dipentylamine, Dihexylamine, Diheptylamine, Dioctylamine (The alkyl group may be linear or branched); monomethanolamine, monoethanolamine, monopropanolenoamine, monobutanolenoamine, monopen Nonoleamine, monohexanolamine, monoheptananolamine, monooctanolamine, monononanolamine, dimethanolamine, methanolethanolamine, diethanolamine, methanolpropanolamine, ethanolpropanolamine, dipropanol Nonoleamine, methanolbutanol / reamine, ethanolanolbutan
- the (F) phosphorus-based extreme pressure agent is contained in the lubricating oil composition of the present invention, its content is not particularly limited, but it is 0.005 to 0.2 as phosphorus element based on the total amount of the lubricating oil composition. mass is preferably 0/0. If the phosphorus element content is less than 0.05 mass% / 0 , there is no effect on wear resistance, and if it exceeds 0.2 mass%, oxidation stability deteriorates, which is not preferable.
- a boron-free ashless dispersant may be used in combination to provide wet friction characteristics, friction characteristics of a wet clutch, antioxidative deterioration during use of lubricating oil, and insoluble matter dispersibility. Is desirable from the viewpoint of improving
- the ashless dispersant containing no boron that can be used in combination include the ashless dispersant before modifying this compound with the boron compound in the boron-containing ashless dispersant of the component (E).
- one kind or two or more kinds of compounds arbitrarily selected from them can be used together in an arbitrary amount.
- the content is usually 0.1 to 10% by mass based on the total amount of the lubricating oil composition.
- any compound usually used as a metal-based detergent for lubricating oils can be used.
- alkali metal or alkaline earth metal sulfonates, phenates, naphthenates and the like can be mentioned. These can be used alone or in combination of two or more.
- examples of the alkali metal include sodium and potassium, and examples of the alkaline earth metal include calcium and magnesium.
- sulfonate or phenate of calcium or magnesium is preferably used. The total base number and the amount of these metal-based detergents can be arbitrarily selected according to the required lubricating oil performance.
- any compound usually used as a friction modifier for lubricating oils can be used.
- Examples of the amine compound include linear or branched, preferably linear aliphatic monoamines having 6 to 30 carbon atoms, linear or branched, preferably linear aliphatic polyamines, or these. Examples thereof include an alkylene oxide adduct of an aliphatic amine.
- Examples of the fatty acid ester include esters of a linear or branched, preferably linear, fatty acid having 7 to 31 carbon atoms and an aliphatic monohydric alcohol or an aliphatic polyhydric alcohol.
- Examples of the fatty acid amide include an amide of a linear or branched, preferably linear, fatty acid having 7 to 31 carbon atoms and an aliphatic monoamine or an aliphatic polyamine.
- Examples of the fatty acid metal salt include an alkaline earth metal salt (such as a magnesium salt and a calcium salt) and a zinc salt of a linear or branched, preferably linear, fatty acid having 7 to 31 carbon atoms.
- one or two or more compounds arbitrarily selected from these friction modifiers can be contained in an arbitrary amount. It is 0.01 to 5.0% by mass, preferably 0.03 to 3.0% by mass on the basis.
- any one commonly used in lubricating oils such as a phenolic compound and a diamine compound can be used.
- anole quinolephenolenes such as 2-6-di ter't-butyl-1-4-methinolephenol, methylene-1,4,4-bisphenone ((2,6-di-tert-butyl-1-4) Bisphenols such as —methinolephenone), naphthylamines such as phenylenol ⁇ -naphthylamine, dialkyldiphenylamines, zinc dialkyldithiophosphates such as zinc di-2-ethylhexyldithiophosphate, (3,5-g tert-butyl-4-hydroxyphenyl) fatty acid (propionic acid, etc.) and a monohydric or polyhydric alcohol such as methanol, octadecanol, 1,6-hexadiol, neopentinoleglyconele, thiojetyleneglyconele, triethylene glycol And esters with pentaerythri
- One or two or more compounds selected arbitrarily from among these antioxidants can be contained in an arbitrary amount, but the content is usually the total amount of the lubricating oil composition. It is 0.01 to 5.0% by mass based on the amount.
- the (K) viscosity index improver that can be used in combination with the lubricating oil composition of the present invention include homopolymers or copolymers of one or more monomers selected from various methacrylates. Examples thereof include a so-called non-dispersion type viscosity index improver such as a hydrogenated product thereof, and a so-called dispersion type viscosity index improver for copolymerizing various methacrylic esters further containing a nitrogen compound.
- specific examples of other viscosity index improvers include non-dispersed or dispersed ethylene-polyolefin copolymers (one olefin includes propylene, 1-butene, 1-pentene, etc.) or hydrides thereof.
- Examples thereof include polyisobutylene or a hydrogenated product thereof, a copolymer of styrene and hydrogenated styrene, a copolymer of styrene and maleic anhydride, and a polyalkylstyrene.
- the viscosity index improver may have a number average molecular weight of, for example, 5,000 to 150,000, preferably 5,000 to 35,000 in the case of dispersible and non-dispersible polymethacrylates. Is from 800 to 5,000 when polyisobutylene or a hydride thereof is used, preferably 800 to 5,000 when polyisobutylene or a hydride thereof is used. 1150,000, preferably 3,000-12,000.
- one or two or more compounds arbitrarily selected from these viscosity index improvers can be contained in an arbitrary amount. It is 0.1 to 40% by mass based on the composition.
- any compound that is usually used as an antifoaming agent for lubricating oils can be used.
- examples thereof include dimethyl silicone and fluorosilicone. And the like.
- One or two or more compounds selected arbitrarily from these can be contained in any amount, but usually the content is 0.001 to 0.001 based on the total amount of the lubricating oil composition. 0 5 quality %.
- Examples of the detergency agent include alcohol succinic acid, alcohol succinic acid ester, polyhydric alcohol ester, petroleum snorrephonate, and dinoninolephthalene sulfonate.
- Examples of the corrosion inhibitor include benzotriazole, tolyltriazole, and imidazole compounds.
- Pour point depressants include, for example, polymethacrylate-based polymers that are compatible with the lubricating base oil used.
- Examples of the rubber swelling agent include aromatic compounds.
- the content of the additives of these components (M), (N), (O) and (P) is optional, but the content of the corrosion inhibitor based on the total amount of the composition is usually 0.005 to 0.2 mass%, the content of other additives is 0.005 to 10 mass, respectively. /. Degree.
- lubricating oil compositions for transmissions of the present invention (Examples 1 to 8) and lubricating oil compositions for comparison as shown in Tables 2-1 and 2_2 (Comparative Examples 1 to 8) were prepared. These lubricating oil compositions were evaluated by performing the following (1) life test of anti-shudder performance and (2) fatigue life test. The results of these evaluations are also shown in Table 11-1, Table 1-2, Table 2-1 and Table 2-2.
- a low-speed sliding test was conducted by changing only the oil temperature during the durability test from 120 ° C to 140 ° C based on the “Test method for preventing oil shudder in automatic transmissions” specified in JASO M349-98. Life of reference oil specified in test method and examples or comparative examples The retention of the anti-shudder performance was evaluated based on the ratio to the life of the composition.
- the performance was measured at 0, 6, 12, 24, and every 24 hours thereafter.
- the lubricating oil composition was judged to have an excellent anti-shudder performance life. The test was aborted if it exceeded four times the reference oil (288 h), and was marked as four or more.
- the time required for surface damage such as pitting to occur on the cylindrical surface was defined as the fatigue life. If the fatigue life was 5 Oh or more, the composition was judged to have a long fatigue life.
- Antioxidants amines, phenols
- seal swelling agents alomas
- friction modifiers amines + esters
- viscosity index improvers and pour point depressants (polymethacrylates)
- Antioxidants amines, phenols
- seal swelling agents alomas
- friction modifiers amines + esters
- viscosity index improvers and pour point depressants (polymethacrylates)
- Base oil Refined mineral oil base oil viscosity (100 ° C) 4.0mmVs) l) 100 100 100 100 100 100 100
- Antioxidants amines, phenols
- seal swelling agents asromas
- friction modifiers amines + esters
- viscosity index improvers and pour point depressants (polymethacrylate)
- the lubricating oil composition of the present invention has excellent properties such as excellent shudder prevention life and long fatigue life. Accordingly, the lubricating oil composition of the present invention is suitably used as a transmission oil, particularly as a lubricating oil composition for an automatic transmission and a Z or continuously variable transmission, or a transmission having a wet clutch and / or a wet brake. It can be used as a lubricating oil that is required to improve fatigue life by preventing pitting, such as gear oil, lubricating oil for internal combustion engines, hydraulic oil for shock absorbers, compressor oil, etc. .
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Description
Claims
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| US10/816,274 US20040192562A1 (en) | 2001-10-02 | 2004-04-01 | Lubricating oil composition |
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| JP7563935B2 (ja) * | 2020-10-09 | 2024-10-08 | Eneos株式会社 | 潤滑油組成物 |
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| EP2248879A4 (en) * | 2008-02-13 | 2012-03-21 | Idemitsu Kosan Co | LUBRICANT COMPOSITION FOR CONTINUOUSLY CHANGED GEARBOX |
| JP5563832B2 (ja) * | 2008-02-13 | 2014-07-30 | 出光興産株式会社 | チェーン式無段変速機用潤滑油組成物 |
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| WO2016170813A1 (ja) * | 2015-04-22 | 2016-10-27 | 出光興産株式会社 | 自動変速機油 |
| JP2016204519A (ja) * | 2015-04-22 | 2016-12-08 | 出光興産株式会社 | 自動変速機油 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20040192562A1 (en) | 2004-09-30 |
| JP2003113391A (ja) | 2003-04-18 |
| JP4199945B2 (ja) | 2008-12-24 |
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