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US20100216676A1 - Lubricating oil composition - Google Patents

Lubricating oil composition Download PDF

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Publication number
US20100216676A1
US20100216676A1 US12/680,906 US68090608A US2010216676A1 US 20100216676 A1 US20100216676 A1 US 20100216676A1 US 68090608 A US68090608 A US 68090608A US 2010216676 A1 US2010216676 A1 US 2010216676A1
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US
United States
Prior art keywords
compound
mass
lubricating oil
composition
ppm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/680,906
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English (en)
Inventor
Toshihiko Ichihashi
Mitsugu Kudo
Toshiki Ikeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd
Assigned to IDEMITSU KOSAN CO., LTD. reassignment IDEMITSU KOSAN CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IKEDA, TOSHIKI, ICHIHASHI, TOSHIHIKO, KUDO, MITSUGU
Publication of US20100216676A1 publication Critical patent/US20100216676A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/08—Amides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/28—Amides; Imides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/40—Low content or no content compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C10N2040/045—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for continuous variable transmission [CVT]
    • 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 lubricant oil composition used for an automatic transmission such as a multistage transmission and a continuously variable transmission.
  • a lubricating oil composition used for an automatic transmission such as a multistage transmission and a continuously variable transmission is required to have a high power (torque) transmission volume. Accordingly, various lubricating oil compositions for an automatic transmission that can favorably transmit power with a large power transmission volume have been known (see, for instance, Patent Documents 1 and 2).
  • a lubricating oil composition disclosed in Patent Document 1 is a mixture of a sulfur extreme pressure agent, a phosphorous extreme pressure agent and an alkali earth metal detergent with a lubricating base oil so that the lubricating oil composition exhibits an excellent wear resistance and extreme-pressure property, maintains a high friction coefficient for a long period and transmits a large volume of torque.
  • a lubricating oil composition disclosed in Patent Document 2 is a mixture of an effective amount of bisimide succinate having a predetermined structure with a lubricating base oil for enhancing a power transmission volume and improving anti-shudder property.
  • Patent Document 1 JP-A-9-100487
  • Patent Document 2 JP-A-9-202890
  • An object of the present invention is to provide a lubricating oil composition balancing both of a high transmission torque at engagement of the clutch and a high transmission-shock prevention in an automatic transmission such as a multistage transmission and a continuously variable transmission.
  • a lubricating oil composition described below.
  • a lubricating oil composition including: a lubricating base oil; and an imide compound, an amide compound and an aliphatic amine compound mixed with the lubricating base oil, in which a content of the imide compound is 300 to 1000 ppm by mass of a total amount of the composition in terms of nitrogen; a content of the amide compound is 380 to 1300 ppm by mass of the total amount of the composition in terms of nitrogen; and a content of the aliphatic amine compound is 35 to 360 ppm by mass of the total amount of the composition in terms of nitrogen.
  • the lubricating oil composition according to the above aspect of the invention in which the contents of the imide compound, the amide compound and the aliphatic amine compound amount to 1000 to 2000 ppm by mass of the total amount of the composition in terms of nitrogen.
  • the imide compound is a succinimide compound.
  • the lubricating oil composition according to the above aspect of the invention in which the lubricating oil composition is used for a multistage transmission or a continuously variable transmission.
  • the continuously variable transmission is a belt-type continuously variable transmission equipped with a metallic belt.
  • the lubricating oil composition of the aspect of the invention since the predetermined amounts of three specified organic nitrogen compounds (the imide compound, the amide compound and the aliphatic amine compound) are mixed with the base oil, the coefficient of static friction ( ⁇ s) is high, resulting in a high transmission torque. Further, when used for an automatic transmission such as a multistage transmission and a continuously variable transmission, the lubricating oil composition of the aspect of the invention exhibits an excellent anti-shock transmission property (anti-shudder property) without decreasing transmission torque. Particularly, the lubricating oil composition of the aspect of the invention is preferably used for a belt-type continuously variable transmission equipped with a metallic belt.
  • a lubricating oil composition of an aspect of the invention is provided by mixing at least an imide compound, amide compound and aliphatic amine compound with a lubricating base oil. The invention will be described below in detail.
  • a mineral oil and a synthetic oil may be used alone or in a combination of two types or more, or a combination of the mineral oil and the synthetic oil may be used.
  • the lubricating base oil preferably has a kinematic viscosity of 1 mm 2 /s to 50 mm 2 /s, more preferably 2 mm 2 /s to 15 mm 2 /s at 100 degrees C.
  • the lubricating base oil preferably has the kinematic viscosity of 1 mm 2 /s to 50 mm 2 /s, more preferably 2 mm 2 /s to 15 mm 2 /s at 100 degrees C.
  • a pour point which is an index of a low temperature fluidity of the lubricating base oil, is not limited, but is preferably minus 10 degrees C. or lower, particularly minus 15 degrees C. or lower.
  • the lubricating base oil is not particularly limited, but preferably has a saturated hydrocarbon component of 90 mass % or more, a sulfur component of 0.03 mass % or less and a viscosity index of 100 or more.
  • a saturated hydrocarbon component is less than 90 mass %, degraded products may be increased.
  • the sulfur component is more than 0.03 mass %, degraded products may be increased.
  • the viscosity index is less than 100, wear at a high temperature may be increased. Consequently, the mineral oil and synthetic oil having the saturated hydrocarbon component of 90 mass % or more, the sulfur component of 0.03 mass % or less and the viscosity index of 100 or more may be preferably used.
  • the mineral oil examples include a paraffinic mineral oil, an intermediate base mineral oil and a naphthenic mineral oil.
  • the mineral oil is exemplified by a light neutral oil, a medium neutral oil, a heavy neutral oil, bright stock and the like that are produced by solvent purification or hydrogenation purification.
  • Examples of the synthetic oil include poly- ⁇ -olefins, ⁇ -olefin copolymers, polybutene, alkyl benzene, polyol esters, diacid esters, polyoxyalkylene glycol, polyoxyalkylene glycol esters, polyoxyalkylene glycol ethers, hindered esters, silicone oil and the like. Polyolefins and polyol esters are particularly preferable.
  • a succinimide is preferable in terms of an increase in ⁇ ratio and consequent excellent anti-shudder property.
  • the succinimide preferably has an alkyl group or an alkenyl group of a number average molecular weight of 500 to 3000 in a side chain.
  • Various succinimides can be listed as the above succimide, examples of which include a succinimide having a polybutenyl group and a succinimide having a polyisobutenyl group.
  • the polybutenyl group means polymerized mixture of 1-butene and isobutene, polymerized highly-pure isobutene or a hydrogenerated polyisobutenyl group.
  • the succinimide may be so-called mono-type alkenylsuccinimide or alkylsuccinimide, or so-called bis-type alkenylsuccinimide or alkylsuccinimide.
  • Succinimides having a side chain may be manufactured by any conventional methods.
  • polybutenyl succinimide for instance, polybutene or chlorinated polybutene having a number average molecular weight of approximately 500 to 3,000 is reacted with maleic anhydride at approximately 100 to 200 degrees C. to form polybutenyl succinic acid, and the obtained polybutenyl succinic acid is reacted with polyamine.
  • polyamine examples include diethylene triamine, triethylene tetramine, tetraethylene pentamine, pentaethylene hexamine and the like.
  • the alkyl or alkenyl-succinimide may be an alkylphenol derivative or a sulfurized alkylphenol derivative in which the alkyl or alkenyl-succinimide is fused with an aromatic compound such as alkylphenol or sulfurized alkylphenol by Mannich condensation.
  • the alkyl group of the alkylphenol typically has 3 to 30 carbon atoms.
  • the succinimide which has in the side chain an alkyl or alkenyl group having a number average molecular weight of 500 to 3,000, unfavorably exhibits deteriorated dispersibility into the base oil when the number average molecular weight of the side chain is less than 500.
  • the number average molecular weight of the side chain is more than 3000, the handleability in preparing the lubricating oil composition is deteriorated.
  • the composition having an excessively increased viscosity is applied to, for instance, a wet clutch, a friction property of the composition may be deteriorated.
  • the above succinimide is also preferably boron-modified in use.
  • an organic solvent such as alcohols, hexane or xylene is added with polyamine, polybutenyl succinic acid (anhydride) and a boron compound such as boracic acid, and is subsequently heated under suitable conditions.
  • the boron compound include boric anhydride, boron halogenide, borate ester, amide borate, boric oxide and the like.
  • boracic acid is particularly preferable.
  • the boron-modified succinimide can increase a coefficient of kinetic friction because of its bulky structure when mixed in the composition, thereby preferably providing increased transmission torque.
  • a boron content is preferably 50 to 3,000 ppm by mass of a total amount of the composition, more preferably 50 to 2,500 ppm by mass.
  • the boron content is 50 ppm by mass or more, heat resistance of the prepared lubricating oil composition is enhanced.
  • the boron content is 3,000 ppm by mass or less, it is preferable that hydrolysis of boron portions can be restrained and manufacturing cost can also be reduced.
  • a nitrogen content derived from the imide compound mixed in the lubricating oil composition of the aspect of the invention is necessarily 300 to 1000 ppm by mass of the total amount of the composition, preferably 400 to 800 ppm by mass.
  • the prepared lubricating oil composition provides insufficient transmission torque.
  • the nitrogen content derived from the imide compound is more than 1000 ppm by mass, the prepared lubricating oil composition exhibits large transmission shock.
  • the mineral oil is used as the base oil, solubility of the composition is deteriorated.
  • An amide compound mixed in the lubricating oil composition of the aspect of the invention is exemplified by fatty acid amide obtained by fusing a fatty acid to an amine (including ammonia).
  • the fatty acid is preferably a saturated/unsaturated or linear/branched fatty acid having 8 to 30 carbon atoms.
  • the fatty acid may be a monobasic acid or polybasic acid.
  • examples of the fatty acid include caprylic acid, pelargonic acid, capric acid, lauric acid (lauryl acid), isolauric acid, myristic acid, isomyristic acid, pentadecyl acid, palmitic acid, palmitoyl acid, margaric acid, stearic acid, isostearic acid, oleic acid, vaccenic acid, linoleic acid, malonic acid, succinic acid, sebacic acid and the like.
  • amine examples include: ammonia; alkyl amines (an alkyl group may be linear or branched) such as monomethylamine, monoethylamine, monopropylamine, monobutylamine, monopentylamine, monohexylamine, monoheptylamine, monooctylamine, dimethylamine, methylethylamine, diethylamine, methylpropylamine, ethylpropylamine, dipropylamine, methylbutylamine, ethylbutylamine, propylbutylamine, dibutylamine, dipentylamine, dihexylamine, diheptylamine and dioctylamine; alkanol amines (an alkanol group may be linear or branched) such as monomethanolamine, monoethanolamine, monopropanolamine, monobutanolamine, monopentanolamine, monohexanolamine, monoheptanolamine
  • a so-called polyamine having a plurality of amino groups in a molecule is suitable as the amine.
  • the polyamine include diethylene triamine, triethylene tetramine, tetraethylene pentamine, pentaethylene hexamine and the like.
  • Suitable examples of the amide compound obtained by fusing the fatty acid to the amine as described above include: a polyamide obtained by fusing isostearic acid to polyamines such as triamine, tetraamine and pentamine; a polyamide obtained by fusing oleic acid to a polyamine; and a polyamide obtained by fusing lauric acid to a polyamine.
  • a nitrogen content derived from the amide compound mixed in the lubricating oil composition of the aspect of the invention is necessarily 380 to 1300 ppm by mass of the total amount of the composition, preferably 500 to 1000 ppm by mass.
  • the prepared lubricating oil composition exhibits insufficient anti-shock transmission property.
  • the nitrogen content derived from the amide compound is more than 1300 ppm by mass, the prepared lubricating oil composition is deficient in transmission torque.
  • an aliphatic amine compound mixed in the lubricating oil composition of the aspect of the invention preferably has a relatively high molecular weight.
  • examples of the aliphatic amine compound include oleylamine, stearylamine and isostearylamine.
  • the aliphatic amine compound may not be used singularly, but preferably used in a form such as a mixed fatty acid amine and beef tallow propylenediamine.
  • a nitrogen content derived from the aliphatic amine compound mixed in the lubricating oil composition of the aspect of the invention is necessarily 35 to 360 ppm by mass of the total amount of the composition, preferably 100 to 300 ppm by mass.
  • the prepared lubricating oil composition exhibits insufficient initial anti-shock transmission property.
  • the nitrogen content derived from the aliphatic amine compound is more than 360 ppm by mass, the prepared lubricating oil composition is deficient in transmission torque and exhibits unfavorable durability due to sludge generation.
  • the contents of the imide compound, amide compound and aliphatic amine compound described above preferably amount to 1000 to 2000 ppm by mass of the total amount of the composition in terms of nitrogen, more preferably 1100 to 1900 ppm by mass.
  • the lubricating oil composition of the aspect of the invention may be added with an additive as long as an object of the invention to reliably provide less transmission shock and high transmission torque is achieved.
  • the additive examples include an antioxidant, a metal deactivator, an antifoaming agent, a viscosity index improver, a pour point depressant, a surfactant, a coloring agent and the like.
  • antioxidant examples include an amine antioxidant, a phenolic antioxidant, a sulfuric antioxidant and the like.
  • amine antioxidant examples include: monoalkyldiphenylamines such as monooctyldiphenylamine and monononyldiphenylamine; dialkyldiphenylamines such as 4,4′-dibutyldiphenylamine, 4,4′-dipentyldiphenylamine, 4,4′-dihexyldiphenylamine, 4,4′-diheptyldiphenylamine, 4,4′-dioctyldiphenylamine and 4,4′-dinonyldiphenylamine; polyalkyldiphenylamines such as tetrabutyldiphenylamine, tetrahexyldiphenylamine, tetraoctyldiphenylamine and tetranonyldiphenylamine; and naphthylamines such as ⁇ -naphthylamine, phenyl- ⁇ -naphthylamine, butylphen
  • phenolic antioxidant examples include 2,6-di-t-butylphenol, 2,6-di-t-butyl-4-methylphenol, 4,4′-methylene-bis(2,6-di-t-butylphenol), 4,4′-butylidene-bis(3-methyl-6-t-butylphenol), 2,2′-methylene-bis(4-ethyl-6-t-butylphenol), 2,2′-methylene-bis(4-methyl-6-t-butylphenol), 4,4′-isopropylidene-bisphenol, 2,4-dimethyl-6-t-butylphenol, tetrakis[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane, 1,1,3-tris(2-methyl-4-hydroxy-5-t-butylphenyl)butane, 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzil)benz
  • sulfuric antioxidant examples include, dialkylthiodipropionate, a derivative of dialkyldithio-carbamic acid (except a metal salt), bis(3,5-di-t-butyl-4-hydroxybenzil)sulfide, mercaptobenzothiazole, a reactant of phosphorus pentasulfide and olefin, dicetyl sulfide and the like.
  • One of the above various antioxidants may be used alone or a combination of two or more thereof may be used.
  • the amine antioxidant, phenolic antioxidant or zinc alkyldithiophosphate are preferably used.
  • a content of such an antioxidant is preferably in a range from 0.05 to 3 mass % of the total amount of the composition.
  • the metal deactivator is exemplified by benzotriazole and thiadiazole, which may be used alone or in a combination of two or more.
  • a content of such a metal deactivator is preferably in a range from 0.01 to 5 mass % of the total amount of the composition.
  • antifoaming agent examples include a silicone compound and an ester compound, which may be used alone or in a combination of two or more.
  • a content of such an antifoaming agent is preferably in a range from 0.05 to 5 mass % of the total amount of the composition.
  • the viscosity index improver examples include polymethacrylate, an olefin copolymer such as an ethylene-propylene copolymer, a dispersed olefin copolymer, a styrene copolymer such as a hydrogenated styrene-diene copolymer, which may be used alone or in a combination of two or more thereof.
  • a content of such a viscosity index improver is preferably in a range from 0.01 to 10 mass % of the total amount of the composition.
  • the pour point depressant may be exemplified by polymethacrylate.
  • a content of such a pour point depressant is preferably in a range from 0.01 to 10 mass % of the total amount of the composition.
  • the surfactant may be exemplified by polyoxyethylene alkylphenyl ether.
  • a content of such a surfactant is preferably in a range from 0.01 to 10 mass % of the total amount of the composition.
  • the lubricating oil composition of the above aspect of the invention can be used for various automatic transmissions such as a multistage transmission, a chain type continuously variable transmission equipped with a chain, a belt-type continuously variable transmission equipped with a metallic belt or a traction-drive type continuously variable transmission equipped with a traction-drive.
  • Lubricating oil compositions as shown in Tables 1 and 2 were prepared.
  • the prepared lubricating oil compositions were evaluated on coefficient of kinetic friction ( ⁇ d) and coefficient of static friction ( ⁇ o) when being dynamic and coefficient of static friction ( ⁇ s) when being static with use of SAE No. 2 friction testing machine under the following experimental conditions (based on JASOM348-2002).
  • the evaluation was carried out with a cellulose clutch material used for a practical transmission under the conditions of surface pressure being 0.2 to 0.3 N/mm 2 , oil temperature being 100 degrees C., dynamic rotation speed being 3000 rpm and static rotation speed being 0.7 rpm.
  • Lubricating base oil Paraffinic base oil having a pour point of minus 30 degrees C., a kinematic viscosity at 100 degrees C. of 3.5 mm 2 /s and % C A being 0.1 mass % or less
  • Example 1 Example 2
  • Example 3 Example 4
  • Example 5 Lubricating oil Lubricating base oil remainder remainder remainder remainder remainder composition
  • Additive Component A1 540 — — 540 540 (ppm by A (Imide) A2 — 300 — — — mass)
  • Component B B1 650 650 — — (Amide)
  • Component C C1 170 170 170 170 170 — (Aliphatic C2 — — — — 35 amine) C3 — — — — — A + B + C (Total) 1360 1120 1770 1090 1875
  • ⁇ s is 0.1 or more (i.e., transmission torque is large) and ⁇ ratio ( ⁇ o/ ⁇ d) is small at 1 or less (i.e., anti-shock transmission property is excellent).
  • Comparative 1 is extremely small since the content of the imide compound is low although the contents of the amide compounds and the aliphatic amine compounds are sufficient. Consequently, transmission torque becomes quite deficient.
  • ⁇ s is not sufficient since the imide compound and the amide compound each are less contained although the content of the aliphatic amine compound is sufficient. Consequently, transmission torque becomes deficient.
  • the aliphatic amine compound is not contained, so that ⁇ ratio is large and anti-shock transmission property is poor.
  • Comparative 4 since the imide compound is excessively contained, ⁇ ratio is large and anti-shock transmission property is considerably poor although ⁇ s is large.
  • the invention is applicable as a lubricating oil composition for an automatic transmission used for a multistage transmission and a continuously variable transmission of a metallic belt type, a chain type, a traction drive type and the like.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
US12/680,906 2007-11-16 2008-10-29 Lubricating oil composition Abandoned US20100216676A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2007297923A JP5280668B2 (ja) 2007-11-16 2007-11-16 潤滑油組成物
JP2007-297923 2007-11-16
PCT/JP2008/069626 WO2009063752A1 (ja) 2007-11-16 2008-10-29 潤滑油組成物

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JP (1) JP5280668B2 (ja)
CN (1) CN101861378A (ja)
WO (1) WO2009063752A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
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US8400030B1 (en) * 2012-06-11 2013-03-19 Afton Chemical Corporation Hybrid electric transmission fluid
EP2502976A4 (en) * 2009-11-19 2015-06-17 Jtekt Corp LUBRICATING OIL, FRICTION ELEMENT AND DIFFERENTIAL GEARBOX WITH LIMITED LOCK
EP2826846A4 (en) * 2012-03-14 2015-11-18 Idemitsu Kosan Co LUBRICANT COMPOSITION
EP3530719A4 (en) * 2016-10-19 2020-06-17 Idemitsu Kosan Co., Ltd. Lubricant composition, lubricating method and transmission

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Publication number Priority date Publication date Assignee Title
JP5385830B2 (ja) 2010-03-16 2014-01-08 Ｊｘ日鉱日石エネルギー株式会社 潤滑油添加剤および潤滑油組成物
JP6693033B2 (ja) * 2015-03-31 2020-05-13 出光興産株式会社 電気自動車又はハイブリッド車用潤滑油組成物
KR101659318B1 (ko) * 2015-11-24 2016-09-23 주식회사 루브캠코리아 윤활 그리스 조성물 및 이의 제조 방법
WO2018043495A1 (ja) * 2016-08-31 2018-03-08 Ｊｘｔｇエネルギー株式会社 潤滑油組成物
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