WO2015045816A1 - トラクションドライブ変速機用潤滑油組成物 - Google Patents
トラクションドライブ変速機用潤滑油組成物 Download PDFInfo
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- WO2015045816A1 WO2015045816A1 PCT/JP2014/073568 JP2014073568W WO2015045816A1 WO 2015045816 A1 WO2015045816 A1 WO 2015045816A1 JP 2014073568 W JP2014073568 W JP 2014073568W WO 2015045816 A1 WO2015045816 A1 WO 2015045816A1
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- lubricating oil
- amine
- oil composition
- carbon atoms
- component
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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
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/02—Well-defined hydrocarbons
- C10M105/04—Well-defined hydrocarbons aliphatic
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/34—Esters of monocarboxylic acids
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/68—Esters
- C10M129/76—Esters containing free hydroxy or carboxyl groups
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- 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
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M133/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
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- 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
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M133/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M133/10—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms cycloaliphatic
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- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M133/12—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to a carbon atom of a six-membered aromatic ring
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- 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
- C10M2203/04—Well-defined cycloaliphatic compounds
- C10M2203/045—Well-defined cycloaliphatic compounds used as base material
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- 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
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- 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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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
- C10M2207/2815—Esters of (cyclo)aliphatic monocarboxylic acids used as base material
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
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- 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
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- 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
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- 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
- C10M2215/065—Phenyl-Naphthyl amines
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/08—Amides
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—Amides; Imides
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
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- 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
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/02—Unspecified siloxanes; Silicones
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- 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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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- 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
- C10N2030/52—Base number [TBN]
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- 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 for a traction drive transmission.
- T-CVT traction drive transmissions
- Patent Document 1 proposes a lubricating oil composition containing an antioxidant composed of a specific hindered phenol compound.
- Patent Document 2 proposes a lubricating oil composition containing an acidic phosphate ester.
- the lubricating oil composition of Patent Document 1 can improve the oxidative stability of the lubricating oil composition by using a hindered phenol compound, no study on seizure resistance has been conducted.
- the lubricating oil composition of Patent Document 2 can improve the wear resistance of the lubricating oil composition with an acidic phosphate ester, no examination has been made on seizure resistance and oxidation stability.
- an acidic phosphate ester is added to the lubricating oil composition, it is required to balance the lubricating oil composition by adding a base in order to suppress corrosion due to an increase in acidity.
- Patent Document 2 when the base (monoamine compound) disclosed in Patent Document 2 is added to the lubricating oil composition, the acid phosphate ester and the amine may react to cause precipitation. Moreover, the lubricating oil composition of Patent Document 2 is for machine tools, and is not described at all for automobile transmissions.
- a lubricating oil composition for a traction drive transmission is required to have a high traction coefficient in order to properly transmit power.
- the lubricating oil compositions of Patent Documents 1 and 2 have not studied at all about the balance between the traction coefficient and other performances.
- An object of the present invention is to provide a lubricating oil composition for a traction drive transmission that suppresses a decrease in the traction drive.
- the present invention provides the following lubricating oil composition for a traction drive transmission.
- A Base oil
- B Phosphate ester compound
- C Antioxidant
- D An amine represented by the following general formula (I) and / or an amine oxide comprising the amine Lubricating oil composition for traction drive transmission.
- R 1 and R 2 are each independently a linear, branched or cyclic alkyl group having 1 to 26 carbon atoms, a linear, branched or cyclic group having 1 to 26 carbon atoms, or A cyclic alkenyl group, (R 4 -0) m -H or (R 5 -0) n1- (R 6 -0) n2 -H, which may be the same or different.
- R 4 to R 6 each independently represents an alkylene group having 2 to 3 carbon atoms, and m, n1 and n2 each independently represents a number of 2 to 25.
- R 3 represents a substituted or unsubstituted linear, branched or cyclic alkyl group having 1 to 26 carbon atoms, or a substituted or unsubstituted linear, branched or cyclic group having 1 to 26 carbon atoms.
- An alkenyl group is shown.
- the lubricating oil composition for a traction drive transmission maintains seizure resistance while improving oxidation stability by allowing the base number to remain, prevents occurrence of precipitation due to addition of a base, and has a traction coefficient. Reduction can be suppressed.
- the lubricating oil composition for a traction drive transmission of the present invention comprises (A) a base oil, (B) a phosphoric ester compound, (C) an antioxidant and (D) an amine represented by the general formula (I) and / or Alternatively, an amine oxide composed of the amine is blended.
- a lubricating oil composition is not limited to “a composition containing components (A) to (D)”, but instead of “at least one component of components (A) to (D)”.
- a composition containing a modified product in which the component is modified and “a composition containing a reaction product in which at least some of the components (A) to (D) react with each other” are also included.
- lubricating oil composition for traction drive transmission of the present invention
- lubricating oil composition may be referred to as “lubricating oil composition”.
- Component A Base oil
- Mineral oils include paraffinic mineral oils, intermediate mineral oils and naphthenic mineral oils obtained by conventional refining methods such as solvent refining and hydrogenation refining, or waxes produced by the Fischer-Tropsch process (gas-liquid liquid wax). And those produced by isomerizing mineral oil wax.
- Examples of synthetic oils include hydrocarbon synthetic oils and ether synthetic oils.
- Examples of the hydrocarbon synthetic oil include polybutenes, polyisobutylenes, 1-octene oligomers, 1-decene oligomers, ⁇ -olefin oligomers such as ethylene-propylene copolymers or hydrides thereof, and aromatic series such as alkylbenzenes and alkylnaphthalenes.
- ether synthetic oils include polyoxyalkylene glycol and polyphenyl ether.
- the base oil only one kind of the mineral oil and / or the synthetic oil may be used, but two or more kinds may be used. Further, one or more mineral oils and one or more synthetic oils may be used in combination.
- naphthenic mineral oils or naphthenic ring-containing compounds are preferable, of which naphthenic synthetic oils are more preferable, and of these, two naphthenic rings
- the naphthenic synthetic oil having the above is more preferable.
- naphthenic synthetic oils having two or more naphthene rings bicyclo [2.2.1] heptane, bicyclo [2.2.1] heptane ring compound dimer or trimer hydride is preferable. In particular, a dimer is preferable.
- the bicyclo [2.2.1] heptane ring compound is a compound that has a bicyclo [2.2.1] heptane ring and may be substituted with one or more alkyl groups having 1 to 3 carbon atoms. And those having a molecular weight of 200 to 500.
- the blending amount of the base oil as the component (A) in the total amount of the lubricating oil composition is preferably 80 to 99% by mass from the viewpoint of maintaining a high traction coefficient while ensuring the blending ratio of the other components. 90 to 95% by mass is more preferable.
- a phosphate ester compound is used as the B component.
- the phosphate ester compound has a role of maintaining seizure resistance.
- Examples of phosphoric acid ester compounds include phosphoric acid esters such as orthophosphoric acid esters, acidic phosphoric acid esters, and phosphorous acid esters, and at least one of these can be used. Among these phosphate esters, phosphite esters are suitable, but can be appropriately selected according to the purpose.
- R 7 to R 9 are selected from an alkyl group having 4 to 24 carbon atoms, an alkenyl group having 4 to 24 carbon atoms, and an oxygen atom, a nitrogen atom and a sulfur atom in the alkyl group or alkenyl group.
- the alkyl group and alkenyl group of R 7 to R 9 may be linear, branched or cyclic, but is preferably linear.
- the alkyl group and alkenyl group of R 7 to R 9 preferably have 6 to 20 carbon atoms, more preferably 7 carbon atoms.
- R 7 to R 9 are heteroatom-containing groups, the number of heteroatoms is preferably 1 to 4, and the heteroatoms are preferably sulfur atoms.
- Examples of the alkyl group in R 7 to R 9 include octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, icosyl, Examples include a heicosyl group, a docosyl group, a tricosyl group, and a tetracosyl group, which may be linear, branched, or cyclic.
- the alkenyl group includes octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, nonadecenyl, icocenyl, heicosenyl, dococenyl Group, tricocenyl group and tetracocenyl group may be mentioned. These may be linear, branched or cyclic, and the position of the double bond is also arbitrary.
- R 10 is selected from a hydrogen atom, an alkyl group having 4 to 24 carbon atoms, an alkenyl group having 4 to 24 carbon atoms, and an oxygen atom, a nitrogen atom and a sulfur atom in the alkyl group or alkenyl group.
- R 11 represents an alkyl group having 4 to 24 carbon atoms, an alkenyl group having 4 to 24 carbon atoms, and a carbon containing an atom selected from an oxygen atom, a nitrogen atom and a sulfur atom in the alkyl group or alkenyl group.
- a hetero atom-containing group of formula 4 to 24 is shown.
- the alkyl group and alkenyl group of R 10 and R 11 may be linear, branched or cyclic, but is preferably linear. Further, the alkyl group and alkenyl group of R 10 and R 11 preferably have 6 to 20 carbon atoms. Specific examples of the alkyl group and alkenyl group for R 10 and R 11 are the same as those for R 7 to R 9 .
- the number of heteroatoms is preferably 1 to 4, and the heteroatoms are preferably sulfur atoms.
- R 12 is selected from a hydrogen atom, an alkyl group having 4 to 24 carbon atoms, an alkenyl group having 4 to 24 carbon atoms, and an oxygen atom, a nitrogen atom and a sulfur atom in the alkyl group or alkenyl group.
- R 13 represents an alkyl group having 4 to 24 carbon atoms, an alkenyl group having 4 to 24 carbon atoms, and a carbon containing an atom selected from an oxygen atom, a nitrogen atom and a sulfur atom in the alkyl group or alkenyl group.
- a hetero atom-containing group of formula 4 to 24 is shown.
- the alkyl group and alkenyl group of R 12 and R 13 may be linear, branched or cyclic, but is preferably linear. Further, the alkyl group and alkenyl group of R 12 and R 13 preferably have 6 to 20 carbon atoms, more preferably 6 to 12 carbon atoms.
- R 12 and R 13 are heteroatom-containing groups
- the number of heteroatoms is preferably 1 to 4, and the heteroatoms are preferably sulfur atoms.
- Specific examples of the alkyl group and alkenyl group for R 12 and R 13 are the same as those for R 7 to R 9 .
- the blending amount of the phosphoric acid ester compound as the component B is preferably 0.05 to 10% by mass with respect to the total amount of the lubricating oil composition from the viewpoint of improving seizure resistance and suppressing reduction of the traction coefficient. More preferably, it is 0.5 to 8% by mass.
- C component antioxidant
- an antioxidant is used as the C component.
- the antioxidant include amine-based antioxidants, phenol-based antioxidants, and sulfur-based antioxidants.
- the amine-based antioxidant 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.
- the antioxidant mentioned above may be used individually by 1 type, and may be used in combination of 2 or more type. In the present invention, it is preferable to use a combination of a phenol-based antioxidant and an amine-based antioxidant or a sulfur-based antioxidant, and a combination of a phenol-based antioxidant and an amine-based antioxidant is optimal. .
- the blending amount of the antioxidant of component C is 0.1 to 1.6% by mass with respect to the total amount of the lubricating oil composition from the viewpoint of improving the oxidation stability and suppressing the decrease in the traction coefficient.
- the content is 0.5 to 1% by mass.
- the amine represented by the general formula (I) and / or amine oxide of the amine (hereinafter sometimes referred to as “amine of D component”) is used as the D component.
- Both the amine represented by the general formula (I) and the amine oxide of the amine can achieve the effects of the present invention.
- the general formula (I) The amines shown are preferred.
- R 1 and R 2 are each independently a linear, branched or cyclic alkyl group having 1 to 26 carbon atoms, a linear, branched or cyclic group having 1 to 26 carbon atoms, or A cyclic alkenyl group, (R 4 -0) m -H or (R 5 -0) n1- (R 6 -0) n2 -H, which may be the same or different.
- R 4 to R 6 each independently represents an alkylene group having 2 to 3 carbon atoms, and m, n1 and n2 each independently represents a number of 2 to 25.
- R 3 represents a substituted or unsubstituted linear, branched or cyclic alkyl group having 1 to 26 carbon atoms, or a substituted or unsubstituted linear, branched or cyclic group having 1 to 26 carbon atoms.
- An alkenyl group is shown.
- the D component amine neutralizes the acidity increased by the addition of the B component phosphoric acid ester compound, suppresses corrosion of the metal, suppresses oxidation of the lubricating oil composition, and improves oxidation stability.
- metallic detergents, primary amines and secondary amines can be considered.
- the metal detergent is too reactive, and the effect of maintaining the seizure resistance of the phosphoric acid ester compound of the B component is impaired.
- a primary amine and a secondary amine may react with a phosphate ester type compound to cause precipitation.
- R 1 to R 3 are preferably alkyl groups from the viewpoint of improving stability, and more preferably unsubstituted and linear alkyl groups.
- the total number of carbon atoms of R 1 to R 3 is preferably 10 to 40, more preferably 11 to 23, and still more preferably 12 to 22.
- R 1 and R 2 are methyl groups, and more preferably both R 1 and R 2 are methyl groups.
- R 3 is preferably a linear alkyl group having 8 to 22 carbon atoms having no substituent from the viewpoint of improving stability, and a linear alkyl group having 10 to 20 carbon atoms having no substituent. Groups are more preferred. Only 1 type may be used for the amine of D component, and 2 or more types may be mixed and used for it.
- the amine of the D component preferably has a base number that reduces the blending amount of the D component from the viewpoint of suppressing a decrease in the traction coefficient, and preferably has a base number of 50 mgKOH / g or more, more preferably 100 mgKOH / g or more.
- the base number is a value measured by the hydrochloric acid method of JIS K2501.
- the compounding amount of the amine of component D is preferably 0.05 to 4% by mass with respect to the total amount of the lubricating oil composition, from the viewpoint of appropriate neutralization and suppression of reduction in the traction coefficient, preferably 0.1 to The content is more preferably 0.8% by mass, and further preferably 0.15 to 0.5% by mass.
- the B-component phosphate ester compound and the D-component amine are preferably blended in a mass ratio of 35: 1 to 2: 1, and a mass of 20: 1 to 3: 1. It is more preferable to mix by ratio. By blending at such a mass ratio, the balance between seizure resistance and corrosion inhibition can be improved.
- a lubricating oil additive in the lubricating oil composition of the present invention, can be further blended as the E component in the composition obtained by blending the A to D components.
- the lubricating oil additive for component E include viscosity index improvers, friction modifiers and other lubricating oil additives, and one or more lubricating oil additives selected from these are blended. It is preferable.
- the partial ester compound obtained by reaction with a fatty acid and aliphatic polyhydric alcohol is mentioned.
- the fatty acid is preferably a fatty acid having a linear or branched hydrocarbon group having 6 to 30 carbon atoms, and the hydrocarbon group preferably has 8 to 24 carbon atoms, particularly preferably 10 to 10 carbon atoms. 20.
- fatty acids include saturated fatty acids such as caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, and lignoceric acid, myristoleic acid, palmitoleic acid, oleic acid, and Examples include unsaturated fatty acids such as linolenic acid, preferably oleic acid.
- the aliphatic polyhydric alcohol is a divalent to hexavalent alcohol, and examples thereof include ethylene glycol, glycerin, trimethylolpropane, pentaerythritol, sorbitol, sorbitan, and the like, with sorbitan being preferred.
- partial ester compounds may be used individually by 1 type, and may be used in combination of 2 types.
- aliphatic saturated monoamines and unsaturated monoamines having about 10 to 20 carbon atoms such as stearylamine and oleylamine can be suitably used as friction modifiers.
- lubricating oil additives include antifoaming agents, metal deactivators, oil absorbers, ultraviolet absorbers, rust inhibitors and pour point depressants.
- antifoaming agents include silicone oil and fluorinated silicone oil
- metal deactivators include N- [N, N′-dialkyl (alkyl group having 3 to 12 carbon atoms).
- copper deactivator such as aminomethyl] triazole.
- the blending amount of the above-mentioned lubricating oil additive varies depending on the performance to be added and cannot be generally stated. However, it is preferably 3% by mass or less, and preferably 0.1 to 1% by mass with respect to the total amount of the lubricating oil composition. It is more preferable that The lubricating oil composition preferably contains substantially no primary or secondary aliphatic amine. “Substantially not contained” means 0.1 mass% or less, preferably 0.01 mass% or less, more preferably 0 mass%, based on the total amount of the lubricating oil composition. In addition, you may add a primary or secondary amine in the range which does not impair the effect of this invention. For example, if it is a primary amine or a secondary amine having a total carbon number exceeding 20, although it depends on the type of the base oil, it tends to hardly cause a precipitate.
- the traction drive transmission of the present invention uses the above-described lubricating oil composition for a traction drive transmission of the present invention as a lubricating oil composition contained in the traction drive transmission.
- a conventionally known traction drive transmission main body can be used.
- the lubricating oil composition contained in the traction drive transmission the above-described lubricating oil composition for a traction drive transmission of the present invention is used.
- the traction drive transmission of the present invention has sufficient oxidation stability due to excellent base number persistence, maintains seizure resistance, has no obstacles due to precipitates, has a high traction coefficient, and is excellent in power transmission. Is.
- Residual base number A base number of a lubricating oil composition subjected to an oxidation stability test at 150 ° C. for 240 hours in accordance with CEC L-48-A-00 [B] conforms to JIS K2501. Then, it was measured by the hydrochloric acid method.
- Traction coefficient The traction coefficient at 100 ° C was measured with a two-cylinder friction tester. That is, one of the cylinders of the same size in contact (diameter 40 mm, thickness 20 mm, driven type is a flat type with a curvature radius of 20 mm, and the driving side is a flat type without crowning) is continuously constant at the other rotation speed.
- the tangential force generated between the two cylinders was measured by applying a weight of 147.1 N to the contact portion of both cylinders with a weight, and the traction coefficient was obtained.
- This cylinder was made of mirror-finished chromium-molybdenum steel SCM420, the average peripheral speed was 6.8 m / s, and the maximum Hertz contact pressure was 1.24 GPa.
- the traction coefficient was measured under the condition that the slip ratio was 5%.
- (6) ⁇ decrease rate Based on the traction coefficient obtained as described above, the decrease rate of the traction coefficient of each example and the comparative example with respect to the traction coefficient of the comparative example 1 was calculated.
- Example 1 to 18 and Comparative Examples 1 to 15 The materials shown in Table 1 and Table 2 were blended and stirred at 80 ° C. for 30 minutes to prepare a lubricating oil composition, and the above evaluation and measurement were performed. In addition, the raw material symbol used in Table 1 and Table 2 shows the following.
- a component of A-1 A naphthenic synthetic oil (a dimer hydride of a bicyclo [2.2.1] heptane ring compound) (endo-2-methyl-exo-3-methyl-exo-2-[(exo-3 -Methylbicyclo [2.2.1] hept-exo-2-yl) methyl] bicyclo [2.2.1] heptane and endo-2-methyl-exo-3-methyl-exo-2-[(exo -2-Methylbicyclo [2.2.1] hept-exo-3-yl) methyl] bicyclo [2.2.1] heptane) (number of naphthene rings: 4)
- A-2 Naphthenic synthetic oil (2,4-dicyclohexyl-2-methylpentane) (Number of naphthene rings: 2)
- A-3 Naphthenic synthetic oil ((1S, 3aR, 4S, 8aS) -4,8,8-trimethyl-9-
- C component C-1: Monobutylphenyl monooctylphenylamine
- C-2 Pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate]
- C-3 Benzenepropanoic acid, 3,5-bis (1,1-dimethyl-ethyl) -4-hydroxy-C7 to C9 side chain alkyl ester
- C-4 2,6-di-tert-butyl-4- Methylphenol
- C-5 phenyl-1-naphthylamine
- C-6 bis (tridecyl) thiodipropionate
- D component D-1: N-methyldioleilamine (total carbon number of R 1 to R 3 of general formula (I): 37, base number: 107 mgKOH / g)
- D-2 N-methyldidecylamine (total carbon number of R 1 to R 3 in general formula (I
- E component E-1: detergent dispersant (long-chain calcium alkylsulfonate) E-2: detergent dispersant (polyolefin polyamine succinimide / polyol) E-3: detergent dispersant (long chain calcium salicylate) E-4: Friction modifier (8: 2: 1 mixture of long chain alkyl polyamide, thioalkyl long chain alkyl ester and oleic acid monoglyceride) E-5: Antifoaming agent (fluorinated silicone) E-6: Benzotriazole UV absorber (aliphatic primary amine or secondary amine) F-1: Oleylamine (aliphatic primary amine) F-2: Di-cured tallow alkylamine (12-20 carbon atoms of individual alkyl groups, C16: 30%, C18: 64%) (aliphatic secondary amine)
- the lubricating oil compositions of the examples were able to retain a sufficient base number even after being used for a long time in a high temperature environment. This means that a base is always present even in use under severe conditions, and oxidation stability is good. Further, the lubricating oil compositions of the examples were able to maintain seizure resistance without causing seizure even at a load of 13340 N, and did not cause precipitation due to the addition of a base. In addition, the lubricating oil compositions of the examples had little decrease in traction coefficient with respect to Comparative Example 1 as a reference, and could suppress the decrease in traction coefficient.
- the lubricating oil compositions of Comparative Examples 1 to 7, 9 to 10, and 12 to 15 were not able to retain a sufficient base number after being used for a long time in a high temperature environment. This means that when used under severe conditions, the amount of base is not sufficient and the oxidation stability cannot be satisfied.
- precipitation was caused by using a primary amine or a secondary amine.
- Comparative Examples 9 to 11 since the metallic detergent / dispersant was used, the effect of maintaining the seizure resistance of the phosphoric ester compound as the component B was impaired.
- a lubricating oil that improves oxidation stability by retaining the base number, maintains seizure resistance, prevents precipitation due to addition of a base, and suppresses a decrease in traction coefficient.
- a composition can be provided. Therefore, it can be effectively used as a lubricating oil composition for a traction drive transmission (T-CVT).
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Abstract
Description
特許文献2の潤滑油組成物は、酸性リン酸エステルにより潤滑油組成物の耐摩耗性を良好にし得るものであるが、耐焼付性および酸化安定性に関する検討が行われていない。また、潤滑油組成物に酸性リン酸エステルを添加した場合、酸性度が上昇することによる腐食を抑えるため、潤滑油組成物に塩基を添加してバランスを取ることが求められる。しかし、特許文献2に開示されている塩基(モノアミン化合物)を潤滑油組成物に添加した場合、酸性リン酸エステルと当該アミンが反応して沈殿を生じる場合があった。また、特許文献2の潤滑油組成物は工作機械用であり、自動車用変速機用に関しては全く記載されていない。
本発明は、上記事情に鑑みなされたもので、塩基価を残存させることにより酸化安定性を向上するとともに、耐焼付性を保持し、さらに塩基の添加による沈殿の発生を防止するとともに、トラクション係数の低下を抑制するトラクションドライブ変速機用潤滑油組成物を提供することを目的とする。
1.(A)基油、(B)リン酸エステル系化合物、(C)酸化防止剤及び(D)下記の一般式(I)で示されるアミン及び/又は該アミンからなるアミンオキシドを配合してなるトラクションドライブ変速機用潤滑油組成物。
R3は、置換若しくは無置換の炭素数1~26の直鎖状、分岐状、若しくは環状のアルキル基、又は置換若しくは無置換の炭素数1~26の直鎖状、分岐状、若しくは環状のアルケニル基を示す。
本発明において、例えば、「(A)基油、(B)リン酸エステル系化合物、(C)酸化防止剤及び(D)一般式(I)で示されるアミン又は該アミンからなるアミンオキシドを配合してなる潤滑油組成物」と規定された組成物は、「(A)~(D)成分を含む組成物」だけではなく、「(A)~(D)成分の少なくとも一つの成分の代わりに、当該成分が変性した変性物を含む組成物」や、「(A)~(D)成分の少なくとも一部が互いに反応した反応生成物を含む組成物」も含まれる。
[A成分:基油]
潤滑油組成物における基油としては、鉱油及び/又は合成油が用いられる。
鉱油としては、溶剤精製、水添精製等の通常の精製法により得られた、パラフィン系鉱油、中間系鉱油及びナフテン系鉱油等、あるいは、フィッシャートロプシュプロセス等により製造されるワックス(ガストゥリキッドワックス)や鉱油系ワックスを異性化することによって製造されるもの等が挙げられる。
炭化水素系合成油としては、例えばポリブテン、ポリイソブチレン、1-オクテンオリゴマー、1-デセンオリゴマー、エチレン-プロピレン共重合体等のα-オレフィンオリゴマー又はその水素化物、アルキルベンゼン、アルキルナフタレン等の芳香族系化合物、シクロペンタン、シクロヘキサン等のナフテン環を1つ有する化合物、フイヒテライト、オレアナン、2,4-ジシクロヘキシル-2メチルペンタン、ビシクロ[2.2.1]ヘプタン、ビシクロ[2.2.1]ヘプタン環化合物の2量体の水素化物、オクタヒドロメタノナフタレン、オクタヒドロメタノインダン、デカヒドロメタノアズレン等のナフテン環を2つ以上有する化合物等のナフテン環含有化合物、並びに前記ナフテン環を1つ有する化合物及びナフテン環を2つ以上有する化合物に、炭素数1~3のアルキル基又はアルキレン基が1以上置換している化合物が挙げられる。なお、橋かけ環炭化水素の場合、2環系の場合はナフテン環の数は2とし、3環系の場合はナフテン環の数は3とする。
エーテル系合成油としては、ポリオキシアルキレングリコール、ポリフェニルエーテル等が挙げられる。
基油としては、上記鉱油及び/又は上記合成油の一種のみを用いても良いが、二種以上を用いても良い。さらには、鉱油一種以上と合成油一種以上とを組み合わせて用いてもよい。
また、ナフテン環を2つ以上有するナフテン系合成油の中でも、ビシクロ[2.2.1]ヘプタン、ビシクロ[2.2.1]ヘプタン環化合物の2量体または3量体の水素化物が好適であり、特に2量体が好ましい。
本発明では、B成分として、リン酸エステル系化合物を用いる。リン酸エステル系化合物は、耐焼付性を保持する役割を有する。
リン酸エステル系化合物としては、正リン酸エステル、酸性リン酸エステル及び亜リン酸エステル等のリン酸エステルが挙げられ、これらの少なくとも一種を用いることができる。これらリン酸エステルの中でも、亜リン酸エステルが好適であるが、目的に応じて適宜選択することができる。
R7~R9のアルキル基及びアルケニル基は、直鎖状、分岐状、環状のいずれであってもよいが、直鎖状であることが好ましい。さらに、R7~R9のアルキル基及びアルケニル基は、好ましくは炭素数6~20であり、より好ましくは炭素数7である。
R7~R9がヘテロ原子含有基である場合、ヘテロ原子の数は1~4が好ましく、ヘテロ原子は硫黄原子であることが好ましい。
R10及びR11のアルキル基及びアルケニル基は、直鎖状、分岐状、環状のいずれであってもよいが、直鎖状であることが好ましい。さらに、R10及びR11のアルキル基及びアルケニル基は、好ましくは炭素数6~20である。
R10及びR11のアルキル基及びアルケニル基の具体例は、R7~R9と同様である。
R10及びR11がヘテロ原子含有基である場合、ヘテロ原子の数は1~4が好ましく、ヘテロ原子は硫黄原子であることが好ましい。
R12及びR13のアルキル基及びアルケニル基は、直鎖状、分岐状、環状のいずれであってもよいが、直鎖状であることが好ましい。さらに、R12及びR13のアルキル基及びアルケニル基は、好ましくは炭素数6~20であるが、より好ましくは炭素数6~12である。
R12及びR13がヘテロ原子含有基である場合、ヘテロ原子の数は1~4が好ましく、ヘテロ原子は硫黄原子であることが好ましい。
R12及びR13のアルキル基及びアルケニル基の具体例は、R7~R9と同様である。
本発明では、C成分として酸化防止剤を用いる。酸化防止剤としては、アミン系酸化防止剤、フェノール系酸化防止剤及び硫黄系酸化防止剤が挙げられる。
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等のジアルキル(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-ナフチルアミン等のナフチルアミンが挙げられる。
上述した酸化防止剤は、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。本発明においては、フェノール系酸化防止剤と、アミン系酸化防止剤又は硫黄系酸化防止剤とを組み合わせて用いることが好ましく、フェノール系酸化防止剤とアミン系酸化防止剤との組み合わせが最適である。
本発明では、D成分として一般式(I)で示されるアミン及び/又は該アミンのアミンオキシド(以下、「D成分のアミン」と称する場合がある。)を用いる。一般式(I)で示されるアミンと、該アミンのアミンオキシドは何れも本発明の効果をなし得るが、塩基価を残存させやすく、酸化安定性の維持に優れる観点から一般式(I)で示されるアミンが好適である。
R3は、置換若しくは無置換の炭素数1~26の直鎖状、分岐状、若しくは環状のアルキル基、又は置換若しくは無置換の炭素数1~26の直鎖状、分岐状、若しくは環状のアルケニル基を示す。
また、一般式(I)において、R1~R3の炭素数の合計は10~40であることが好ましく、11~23であることがより好ましく、12~22であることがさらに好ましい。炭素数の合計を10以上とすることにより、D成分のアミンを有効成分として長期間残存させることができ、炭素数の合計を40以下とすることにより、塩基性の有効成分を一定の割合で確保して、D成分のアミンの添加量を抑えることができる。
また、一般式(I)において、R1及びR2のうちの1つ又2つがメチル基であることが好ましく、R1及びR2の両方がメチル基であることがより好ましい。R3は、安定性を向上する観点から、置換基を有さない炭素数8~22の直鎖状のアルキル基が好ましく、置換基を有さない炭素数10~20の直鎖状のアルキル基がより好ましい。
D成分のアミンは1種のみを用いても良いし、2種以上を混合して用いてもよい。
また、潤滑油組成物において、B成分のリン酸エステル系化合物とD成分のアミンとは、35:1~2:1の質量比で配合することが好ましく、20:1~3:1の質量比で配合することがより好ましい。このような質量比で配合することにより、耐焼付性と腐食の抑制とのバランスを良好にすることができる。
本発明の潤滑油組成物においては、A~D成分を配合してなる組成物に、さらにE成分として潤滑油添加剤を配合することができる。
E成分の潤滑油添加剤としては、粘度指数向上剤、摩擦調整剤及びその他の潤滑油添加剤等が挙げられ、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。
また、ステアリルアミン、オレイルアミン等の炭素数10~20程度の脂肪族飽和モノアミン及び不飽和モノアミンも摩擦調整剤として好適に使用できる。
潤滑油組成物は、1級又は2級の脂肪族アミンを実質的に含有しないことが好ましい。実質的に含有しないとは、潤滑油組成物の全量基準で0.1質量%以下を意味し、好ましくは0.01質量%以下、より好ましくは0質量%を意味する。なお、1級又は2級アミンでも、本発明の効果を害さない範囲で添加してもよい。例えば、合計炭素数が20を超える1級アミン又は2級アミンであれば、基油の種類にもよるが、沈殿物を生じにくい傾向にある。
本発明のトラクションドライブ変速機は、トラクションドライブ変速機に含まれる潤滑油組成物として、上述した本発明のトラクションドライブ変速機用潤滑油組成物を用いてなるものである。
トラクションドライブ変速機の本体は、従来公知のものを用いることができる。トラクションドライブ変速機に含まれる潤滑油組成物として、上述した本発明のトラクションドライブ変速機用潤滑油組成物を用いる。
本発明のトラクションドライブ変速機は、塩基価の残存性に優れることにより十分な酸化安定性を有するとともに、耐焼付性を保持し、沈殿物による障害もなく、トラクション係数が高く動力の伝達に優れるものである。
(1)塩基価
JIS K2501に準拠して、潤滑油組成物(新油)の塩基価を塩酸法により測定した。
(2)耐焼付性
ASTM D3233(A法)に準拠するファレックス試験(回転数:290rpm、油温100℃)において、試験片が焼付きを生じた時の荷重(N)を測定した。荷重が大きいほど耐焼付性能に優れていることを示す。なお、荷重13340Nでも焼付きが生じなかったものは「>13340」と表記した。
CEC L-48-A-00[B]に準拠して、150℃240時間の条件で酸化安定性試験を行った潤滑油組成物の塩基価を、JIS K2501に準拠して、塩酸法により測定した。
配合直後の潤滑油組成物(新油)の外観を目視で観察した。外観の変化が観察されないものを「〇」、曇りが生じたものを「△」、沈殿が生じたものを「×」とした。
100℃のトラクション係数の測定は、二円筒摩擦試験機にて行った。すなわち、接している同じサイズの円筒(直径40mm、厚さ20mmで被駆動側は曲率半径20mmのタイコ型、駆動側はクラウニングなしのフラット型)の一方を一定速度で、他方の回転速度を連続的に変化させ、両円筒の接触部分に錘により147.1Nの荷重を与えて、両円筒間に発生する接線力、すなわち、トラクション力を測定し、トラクション係数を求めた。この円筒はクロムモリブデン鋼SCM420の鏡面仕上げでできており、平均周速6.8m/s、最大ヘルツ接触圧は1.24GPaであった。また、トラクション係数の測定は、すべり率が5%の条件で行った。
(6)μ低下率
上記のように得られたトラクション係数を元に、比較例1のトラクション係数に対する、各実施例及び比較例のトラクション係数の低下率を算出した。
表1及び表2に示す材料を配合し、80℃で30分間撹拌して潤滑油組成物を作製し、上記の評価及び測定を行った。
なお、表1及び表2において用いている原材料記号は、以下のものを示す。
A-1:ナフテン系合成油(ビシクロ[2.2.1]ヘプタン環化合物の2量体の水素化物)(endo-2-メチル-exo-3-メチル-exo-2-〔(exo-3-メチルビシクロ[2.2.1]ヘプト-exo-2-イル)メチル〕ビシクロ[2.2.1]ヘプタンと、endo-2-メチル-exo-3-メチル-exo-2-〔(exo-2-メチルビシクロ[2.2.1]ヘプト-exo-3-イル)メチル〕ビシクロ[2.2.1]ヘプタンとの混合物)(ナフテン環の数:4)
A-2:ナフテン系合成油(2,4-ジシクロヘキシル-2メチルペンタン)(ナフテン環の数:2)
A-3:ナフテン系合成油((1S,3aR,4S,8aS)-4,8,8-トリメチル-9-メチレン-デカヒドロ-1,4-メタノアズレン)
A-4:エステル系合成油(3,5,5-トリメチルヘキサン酸3,5,5-トリメチルヘキシルエステル)
(B成分)
リン酸エステル系化合物(リン含有量920ppm、全酸価1.95mgKOH/g)。
C-1:モノブチルフェニルモノオクチルフェニルアミン
C-2:ペンタエリトリトールテトラキス[3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニル)プロピオナート]
C-3:ベンゼンプロパン酸,3,5-ビス(1,1-ジメチル-エチル)-4-ヒドロキシ-C7~C9側鎖アルキルエステル
C-4:2,6-ジ-tert-ブチル-4-メチルフェノール
C-5:フェニル-1-ナフチルアミン
C-6:チオジプロピオン酸ビス(トリデシル)
(D成分)
D-1:N-メチルジオレイルアミン(一般式(I)のR1~R3の合計炭素数37、塩基価107mgKOH/g)
D-2:N-メチルジデシルアミン(一般式(I)のR1~R3の合計炭素数21、塩基価184mgKOH/g)
D-3:ジメチルドデシルアミン(一般式(I)のR1~R3の合計炭素数14、塩基価261mgKOH/g)
D-4:トリオクチルアミン(一般式(I)のR1~R3の合計炭素数24、塩基価154mgKOH/g)
D-5:ジシクロヘキシルメチルアミン(一般式(I)のR1~R3の合計炭素数13、塩基価297mgKOH/g)
D-6:N,N-ジメチルオクチルアミン(一般式(I)のR1~R3の合計炭素数10、塩基価327mgKOH/g)
E-1:清浄分散剤(長鎖アルキルスルホン酸カルシウム)
E-2:清浄分散剤(ポリオレフィンポリアミンコハク酸イミド・ポリオール)
E-3:清浄分散剤(長鎖アルキルサリチル酸カルシウム)
E-4:摩擦調整剤(長鎖アルキルポリアミド、チオアルキル長鎖アルキルエステル及びオレイン酸モノグリセライドの8:2:1混合物)
E-5:消泡剤(フッ素化シリコーン)
E-6:ベンゾトリアゾール系紫外線吸収剤
(脂肪族1級アミン又は2級アミン)
F-1:オレイルアミン(脂肪族1級アミン)
F-2:ジ硬化牛脂アルキルアミン(個々のアルキル基の炭素数12~20、C16:30%、C18:64%) (脂肪族2級アミン)
一方、比較例1~7、9~10及び12~15の潤滑油組成物は、高温環境下で長時間使用した後に塩基価を十分に残存させることができないものであった。このことは、苛酷な条件での使用において、塩基の量が十分ではなく、酸化安定性を満足できないことを意味している。また、比較例7及び8は、第1級アミン又は第2級アミンを用いていることから沈殿を生じるものであった。また、比較例9~11は、金属系清浄分散剤を用いていることから、B成分のリン酸エステル系化合物の耐焼付性を保持する効果を損なうものであった。
Claims (6)
- (A)基油、(B)リン酸エステル系化合物、(C)酸化防止剤及び(D)下記の一般式(I)で示されるアミン及び/又は該アミンからなるアミンオキシドを配合してなるトラクションドライブ変速機用潤滑油組成物。
R3は、置換若しくは無置換の炭素数1~26の直鎖状、分岐状、若しくは環状のアルキル基、又は置換若しくは無置換の炭素数1~26の直鎖状、分岐状、若しくは環状のアルケニル基を示す。 - (A)成分の基油が、ナフテン系合成油である請求項1に記載のトラクションドライブ変速機用潤滑油組成物。
- 前記一般式(I)のアミンのR1~R3の炭素数の合計が10~40である請求項1又は2に記載のトラクションドライブ変速機用潤滑油組成物。
- 前記一般式(I)のアミンのR1及び/又はR2がメチル基であり、R3が置換基を有さない炭素数8~22のアルキル基である請求項1~3のいずれかに記載のトラクションドライブ変速機用潤滑油組成物。
- (B)成分のリン酸エステル系化合物と、(D)成分の一般式(I)で示されるアミン及び/又は該アミンからなるアミンオキシドとを、35:1~2:1の質量比で配合してなる請求項1~4のいずれかに記載のトラクションドライブ変速機用潤滑油組成物。
- (A)成分の基油を80~99質量%、(B)成分のリン酸エステル系化合物を0.05~10質量%、(C)成分の酸化防止剤を0.1~1.6質量%、(D)成分の一般式(I)で示されるアミン及び/又は該アミンからなるアミンオキシドを0.05~4質量%配合してなる請求項1~5のいずれかに記載のトラクションドライブ変速機用潤滑油組成物。
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CN201480052716.4A CN105579563A (zh) | 2013-09-25 | 2014-09-05 | 牵引传动变速器用润滑油组合物 |
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WO2019176569A1 (ja) * | 2018-03-13 | 2019-09-19 | 出光興産株式会社 | 潤滑油組成物、潤滑油組成物の製造方法及び無段変速機 |
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CN111032613B (zh) * | 2017-08-28 | 2023-03-28 | 埃克森美孚化学专利公司 | 酯化合物、含有它的润滑油组合物及其制造方法 |
JP2020066682A (ja) * | 2018-10-25 | 2020-04-30 | 出光興産株式会社 | 潤滑油基油、潤滑油組成物、及び潤滑油組成物の使用方法 |
EP3878930A4 (en) * | 2018-11-06 | 2022-08-10 | ENEOS Corporation | LUBRICATING OIL COMPOSITION |
FR3093729A1 (fr) * | 2019-03-13 | 2020-09-18 | Total Marketing Services | Utilisation d’un ester dans une composition de refroidissement |
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