WO2022138852A1 - 潤滑油組成物、並びに潤滑油組成物の使用方法及び製造方法 - Google Patents

潤滑油組成物、並びに潤滑油組成物の使用方法及び製造方法 Download PDF

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WO2022138852A1
WO2022138852A1 PCT/JP2021/047982 JP2021047982W WO2022138852A1 WO 2022138852 A1 WO2022138852 A1 WO 2022138852A1 JP 2021047982 W JP2021047982 W JP 2021047982W WO 2022138852 A1 WO2022138852 A1 WO 2022138852A1
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mass
rust
lubricating oil
rust inhibitor
oil composition
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PCT/JP2021/047982
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English (en)
French (fr)
Japanese (ja)
Inventor
徳栄 佐藤
健治 後藤
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Idemitsu Kosan Co Ltd
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Idemitsu Kosan Co Ltd
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Priority to JP2022571637A priority Critical patent/JPWO2022138852A1/ja
Priority to US18/251,760 priority patent/US12180433B2/en
Priority to EP21910991.5A priority patent/EP4269545A4/en
Priority to CN202180086944.3A priority patent/CN116724104A/zh
Publication of WO2022138852A1 publication Critical patent/WO2022138852A1/ja
Anticipated expiration legal-status Critical
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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
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
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    • C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
    • C10M157/08—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential at least one of them being a phosphorus-containing compound
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    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
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    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
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    • 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
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
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    • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
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    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
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    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
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    • C10M2207/283—Esters of polyhydroxy compounds
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    • 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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    • 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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    • 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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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/10—Amides of carbonic or haloformic acids
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    • 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
    • C10M2215/26—Amines
    • C—CHEMISTRY; METALLURGY
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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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    • C10M2223/041—Triaryl phosphates
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    • C10M2229/02—Unspecified siloxanes; Silicones
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
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    • 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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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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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
    • C10N2030/18—Anti-foaming property
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    • C10N2030/24—Emulsion properties
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/135—Steam engines or turbines

Definitions

  • the present invention relates to a lubricating oil composition, and a method of using and manufacturing the lubricating oil composition.
  • Lubricating oil compositions used in equipment that may be contaminated with water or water vapor are required to have rust resistance in order to prevent the generation of rust on the surface of the equipment.
  • a hydrocarbon-based oil selected from mineral oils and synthetic oils a hydrocarbon-based oil selected from mineral oils and synthetic oils, sarcosine derivative 0.008 to 0.04% by mass, and alkenyl based on the total amount of the composition.
  • Lubricating oil composition containing 0.01 to 0.07% by mass of succinic acid ester, 0.1 to 3.0% by mass of amine-based antioxidant, and 0.1 to 3.0% by mass of phenol-based antioxidant.
  • the sarcosine derivative and the alkenyl succinic acid ester are added as rust preventives.
  • the present inventors From the viewpoint of diversification of raw material procurement, the present inventors have diligently studied a lubricating oil composition used for equipment in which water or water vapor may be mixed with various base oils. As a result, it was found that even if succinic acid ester, which is generally known as a rust preventive, is used alone, there is a small amount of base oil whose rust preventive property cannot be sufficiently ensured. The present inventors have conducted diligent studies to investigate the cause of this. As a result, it was found that the base oil contains a polar substance having an action of remarkably deteriorating the rust preventive property, so that the rust preventive property cannot be sufficiently ensured.
  • succinic acid ester which is generally known as a rust preventive
  • the present invention relates to a lubricating oil composition having excellent rust-preventive properties while containing a base oil containing a polar substance having an action of significantly deteriorating rust-proof properties, and a method of using the lubricating oil composition.
  • the subject is to provide a manufacturing method.
  • the base oil (A) satisfies the following requirement ( ⁇ ) and meets the following requirements ( ⁇ ).
  • the gas chromatogram measured according to ASTM D 7500 by a gas chromatography distillation apparatus has a peak in the range of more than 11 carbon atoms and less than 23 carbon atoms.
  • the rust inhibitor (B) is selected from the group consisting of a first rust inhibitor (B1), a second rust inhibitor (B2), a third rust inhibitor (B3), and a fourth rust inhibitor (B4).
  • the first rust inhibitor (B1) a combination of succinic acid ester (B1-1) and sorbitan fatty acid ester (B1-2)
  • the second rust inhibitor (B2) carboxylic acid amide (B2-1)
  • the third rust inhibitor (B3) neutral alkyl phosphate ester (B3-1)
  • the fourth rust inhibitor (B4) a combination of a fatty acid (B4-1) having 12 or more carbon atoms and a primary amine (B4-2), the first rust inhibitor (B1), the second rust inhibitor ( The content of B2), the third rust inhibitor (B3), and the fourth rust inhibitor (B4) is a lubricating oil composition that satisfies the following requirement ( ⁇ ) based on the total amount of the lubricating oil composition.
  • a method for producing a lubricating oil composition which comprises a step of mixing a base oil (A) and a rust preventive agent (B).
  • the base oil (A) satisfies the following requirement ( ⁇ ) and meets the following requirements ( ⁇ ).
  • the gas chromatogram measured according to ASTM D 7500 by a gas chromatography distillation apparatus has a peak in the range of more than 11 carbon atoms and less than 23 carbon atoms.
  • the rust inhibitor (B) is selected from the group consisting of a first rust inhibitor (B1), a second rust inhibitor (B2), a third rust inhibitor (B3), and a fourth rust inhibitor (B4).
  • the first rust inhibitor (B1) a combination of succinic acid ester (B1-1) and sorbitan fatty acid ester (B1-2)
  • the second rust inhibitor (B2) carboxylic acid amide (B2-1)
  • the third rust inhibitor (B3) neutral alkyl phosphate ester (B3-1)
  • Fourth rust inhibitor (B4) Combination of fatty acid (B4-1) having 12 or more carbon atoms and primary amine (B4-2)
  • the first rust inhibitor (B1), the second rust inhibitor ( B2), the third rust preventive agent (B3), and the fourth rust preventive agent (B4) are blended in a lubricating oil composition that satisfies the following requirement ( ⁇ ) based on the total amount of the lubricating oil composition.
  • a lubricating oil composition having excellent rust resistance while containing a base oil containing a polar substance having an action of significantly deteriorating rust resistance a method of using the lubricating oil composition, and a method of using the lubricating oil composition. It becomes possible to provide a manufacturing method.
  • the numerical range described herein can be combined arbitrarily.
  • the numerical ranges of "A to D” and “C to B” are also included in the scope of the present invention.
  • the numerical range “lower limit value to upper limit value” described in the present specification means that it is equal to or more than the lower limit value and equal to or less than the upper limit value unless otherwise specified.
  • the numerical value of the embodiment is a numerical value that can be used as an upper limit value or a lower limit value.
  • the lubricating oil composition of the present invention contains a base oil (A) and a rust preventive agent (B).
  • the base oil (A) satisfies the following requirement ( ⁇ ).
  • the gas chromatogram measured according to ASTM D 7500 by a gas chromatography distillation apparatus has a peak in the range of more than 11 carbon atoms and less than 23 carbon atoms.
  • the rust inhibitor (B) is selected from the group consisting of a first rust inhibitor (B1), a second rust inhibitor (B2), a third rust inhibitor (B3), and a fourth rust inhibitor (B4). It is one or more kinds to be done.
  • the first rust inhibitor (B1) a combination of succinic acid ester (B1-1) and sorbitan fatty acid ester (B1-2)
  • the second rust inhibitor (B2) carboxylic acid amide (B2-1)
  • the third rust inhibitor (B3) neutral alkyl phosphate ester (B3-1)
  • Fourth rust inhibitor (B4) Combination of fatty acid (B4-1) having 12 or more carbon atoms and primary amine (B4-2)
  • the first rust inhibitor (B1), the second rust inhibitor ( The contents of B2), the third rust inhibitor (B3), and the fourth rust inhibitor (B4) satisfy the following requirement ( ⁇ ) based on the total amount of the lubricating oil composition.
  • the present inventors have made diligent studies to solve the above problems, and have found the above requirement ( ⁇ ) as a parameter for specifying a base oil containing a polar substance having an action of remarkably deteriorating rust prevention.
  • the present inventors have confirmed the following (1) and (2) in the process of conducting various studies. Therefore, it is clear that the substance having an action of remarkably deteriorating the rust preventive property is a polar substance, and that the polar substance remarkably lowers the rust preventive property of the lubricating oil composition.
  • the base oil satisfying the above requirement ( ⁇ ) is clay-treated to extract the polar substance, and the extracted polar substance is added to the base oil not satisfying the above requirement ( ⁇ ) to obtain the above requirement ( ⁇ ).
  • a base oil satisfying the conditions was prepared.
  • the "base oil (A)” and the “rust inhibitor (B)” are also referred to as “component (A)” and “component (B)", respectively.
  • first rust inhibitor (B1)”, “second rust inhibitor (B2)”, “third rust inhibitor (B3)”, and “fourth rust inhibitor (B4)” are “ingredients” respectively.
  • the lubricating oil composition of one aspect of the present invention may not contain components other than the component (A) and the component (B), but is an antioxidant (to the extent that the effect of the present invention is not impaired). It is preferable to further contain one or more additives selected from the group consisting of C), an abrasion resistant agent (D), and an antifoaming agent (E).
  • additives selected from the group consisting of C
  • C abrasion resistant agent
  • E antifoaming agent
  • the total content of the component (A) and the component (B) is preferably 80% by mass or more, more preferably 90% by mass or more, based on the total amount of the lubricating oil composition. , More preferably 95% by mass or more. Further, it is preferably less than 100% by mass, more preferably 99.9% by mass or less, still more preferably 99.5% by mass or less.
  • the upper and lower limits of these numerical ranges can be arbitrarily combined. Specifically, it is preferably 80% by mass to less than 100% by mass, more preferably 90% by mass to 99.9% by mass, and further preferably 95% by mass to 99.5% by mass.
  • the lubricating oil composition of the present invention contains a base oil (A).
  • the base oil (A) satisfies the following requirement ( ⁇ ).
  • the gas chromatogram measured according to ASTM D 7500 by a gas chromatography distillation apparatus has a peak in the range of more than 11 carbon atoms and less than 23 carbon atoms.
  • the base oil (A) satisfying the above requirement ( ⁇ ) contains a polar substance having an action of remarkably deteriorating the rust preventive property.
  • the peak indicating the presence of the polar substance is a peak existing in the range of more than 11 carbon atoms and less than 23 carbon atoms (hereinafter, also referred to as “first peak”) (see the base oil (A) in FIG. 1). reference).
  • first peak a peak existing in the range of more than 11 carbon atoms and less than 23 carbon atoms
  • the first peak disappears. Therefore, the substance belonging to the first peak is a polar substance having more than 11 carbon atoms and less than 23 carbon atoms, which can be removed by the white clay treatment.
  • the carbon number of the polar substance can be narrowed down to the range shown in the following ( ⁇ 1) to ( ⁇ 3) in more detail. Therefore, the range of the number of carbon atoms in which the first peak exists can also be narrowed down to the range shown in the following ( ⁇ 1) to ( ⁇ 3).
  • ( ⁇ 1) Carbon number 12 or more and 22 or less ( ⁇ 2) Carbon number 13 or more and 21 or less ( ⁇ 3) Carbon number 14 or more and 20 or less
  • the gas chromatogram is measured by adopting the apparatus and conditions described in Examples described later. be able to.
  • the content of the base oil (A) is preferably 90.0% by mass or more, more preferably 95.0% by mass or more, based on the total amount of the lubricating oil composition. More preferably, it is 97.0% by mass or more. Further, it is preferably 99.5% by mass or less, more preferably 99.2% by mass or less, and further preferably 99.0% by mass or less.
  • the upper and lower limits of these numerical ranges can be arbitrarily combined. Specifically, it is preferably 90.0% by mass to 99.5% by mass, more preferably 95.0% by mass to 99.2% by mass or less, and further preferably 97.0% by mass to 99.0% by mass. be.
  • a base oil satisfying the above requirement ( ⁇ ) can be used without particular limitation.
  • the base oil (A) satisfying the above requirement ( ⁇ ) include atmospheric pressure residual oil obtained by atmospheric distillation of crude oil such as paraffin crude oil, intermediate crude oil, and naphthen crude oil; Distillate obtained by vacuum distillation; one or more of purification treatments such as solvent desorption, solvent extraction, hydrocarbon finish, solvent dewaxing, catalytic dewaxing, isomerization dewaxing, vacuum distillation, etc.
  • purification treatments such as solvent desorption, solvent extraction, hydrocarbon finish, solvent dewaxing, catalytic dewaxing, isomerization dewaxing, vacuum distillation, etc.
  • mineral oils or waxes slack wax, GTL wax, etc.
  • hydrocarbon-based base oils such as isoparaffin polymers that have been subjected to the above treatment.
  • the base oil (A) is one or more base oils selected from paraffin-based mineral oils and hydrocarbon-based oils
  • ASTM is used by a gas chromatography distillation apparatus as specified in the above requirement ( ⁇ ).
  • a peak (hereinafter, also referred to as “second peak”) is detected even in the range of 23 or more and 50 or less carbon atoms (see the base oil (A) in FIG. 1). ).
  • the second peak is a peak attributed to one or more base oils (main components of the base oil) selected from paraffin-based mineral oils and hydrocarbon-based oils.
  • the intensity ratio [(first peak intensity) / (second peak intensity)] between the first peak and the second peak in the gas chromatogram is determined.
  • it is preferably 0.50 or less, more preferably 0.40 or less, still more preferably. It is 0.35 or less.
  • the strength ratio may be 0.10 or more, 0.20 or more, or 0.25 or more.
  • the carbon number of the second peak can be narrowed down to the range shown in the following ( ⁇ 1) to ( ⁇ 3) in more detail. ( ⁇ 1) Carbon number 25 or more and 50 or less ( ⁇ 2) Carbon number 30 or more and 45 or less ( ⁇ 3) Carbon number 35 or more and 45 or less
  • the base oil (A) preferably has a high flash point from the viewpoint of safety and handleability during storage and transportation.
  • the flash point of the base oil (A) is preferably 250 ° C. or higher.
  • the upper limit of the flash point of the base oil (A) is not particularly limited, but is usually 400 ° C. or lower.
  • the flash point of the base oil (A) means a value measured by the Cleveland opening method in accordance with JIS K2265-4: 2007 (How to obtain the flash point-Part 4: Cleveland opening method). ..
  • the density of the base oil (A) at 15 ° C. is preferably 0.9000 g / cm 3 or less, more preferably 0.8500 g / cm 3 or less, still more preferably 0.8300 g / cm 3 or less. Is. Further, it is preferably 0.8000 g / cm 3 or more. The upper and lower limits of these numerical ranges can be arbitrarily combined. Specifically, it is preferably 0.8000 g / cm 3 to 0.9000 g / cm 3 , more preferably 0.8000 g / cm 3 to 0.8500 g / cm 3 , and even more preferably 0.8000 g / cm 3 to 0. It is 8300 g / cm 3 .
  • the kinematic viscosity of the base oil (A) at 100 ° C. is preferably 3.00 mm 2 / s or more, more preferably 5.00 mm 2 / s. It is s or more, more preferably 7.50 mm 2 / s or more. Further, it is preferably 15.0 mm 2 / s or less, more preferably 10.0 mm 2 / s or less, and further preferably 9.00 mm 2 / s or less.
  • the viscosity index of the base oil (A) is preferably 100 or more, more preferably 110 or more, still more preferably 120 or more. Moreover, it is usually 150 or less.
  • the 100 ° C. kinematic viscosity and viscosity index of the base oil (A) are values measured and calculated in accordance with JIS K 2283: 2000.
  • the base oil (A) has the following requirement ( ⁇ ) in addition to the above requirement ( ⁇ ) from the viewpoint of being excellent in viscosity characteristics and facilitating the preparation of a lubricating oil composition having a high flash point. It is preferable to satisfy.
  • the lubricating oil composition of the present invention contains a rust preventive agent (B).
  • the rust inhibitor (B) is a first rust inhibitor (B1), a second rust inhibitor (B2), a third rust inhibitor (B3), and a fourth rust inhibitor.
  • B4 One or more selected from the group consisting of (B4).
  • rust inhibitor (B1) Combination of succinic acid ester (B1-1) and sorbitan fatty acid ester (B1-2) -Second rust inhibitor (B2): Carboxylic acid amide (B2-1) -Third rust inhibitor (B3): Neutral alkyl phosphate ester (B3-1)
  • the rust preventive agent (B) is a first rust preventive agent (B1) or a second rust preventive agent from the viewpoint of making the lubricating oil composition excellent in anti-emulsifying property. (B2) is preferable.
  • the contents of the first rust inhibitor (B1), the second rust inhibitor (B2), the third rust inhibitor (B3), and the fourth rust inhibitor (B4) Meets the following requirement ( ⁇ ) based on the total amount of the lubricating oil composition.
  • the first rust inhibitor (B1) is a combination of a succinic acid ester (B1-1) and a sorbitan fatty acid ester (B1-2).
  • the first rust inhibitor (B1) contains a succinic acid ester (B1-1). Even when the succinic acid ester (B1-1) is used alone, it cannot exhibit sufficient rust resistance against the base oil (A) satisfying the above requirement ( ⁇ ). However, when used in combination with the sorbitan fatty acid ester (B1-2), it exhibits excellent rust resistance against the base oil (A) satisfying the above requirement ( ⁇ ).
  • the succinic acid ester (B1-1) is not particularly limited as long as the effects of the present invention can be exhibited, and one type may be used alone or two or more types may be used in combination.
  • the succinic acid ester (B1-1) is an ester of alkenyl succinic acid and a polyhydric alcohol from the viewpoint of facilitating the effect of the present invention and the storage stability.
  • Alcohol succinic acid polyhydric alcohol ester is preferred.
  • the ester is preferably a half ester.
  • alkenyl succinic acid constituting the alkenyl succinic acid polyhydric alcohol ester alkenyl succinic acid having an alkenyl group having 8 to 28 carbon atoms, more preferably 10 to 24 carbon atoms, and further preferably 12 to 20 carbon atoms is preferable.
  • polyhydric alcohol constituting the alkenyl succinic acid polyhydric alcohol ester a polyol having about 3 to 20 hydroxyl groups or a diol is preferable.
  • diol examples include ethylene glycol, propanediol, butanediol, pentanediol, hexanediol, heptanediol, octanediol, nonanediol, decanediol, undecanediol, and dodecanediol.
  • the aliphatic hydrocarbon group constituting the diol may be linear or branched.
  • Examples of the polyol having about 3 to 20 hydroxyl groups include trimethylolethane, trimethylolpropane, trimethylolbutane, trimethylolpentane, trimethylolhexane, trimethylolheptan, di- (trimethylolpropane), and tri- (trimethylolpropane).
  • Methylolpropane) pentaerythritol, di- (pentaerythritol), tri- (pentaerythritol), glycerin, polyglycerin (2 to 20-mer of glycerin), 1,3,5-pentanetriol, sorbitol, sorbitan, sorbitol glycerin.
  • Polyhydric alcohols such as condensates, adonitol, arabitol, xylitol, mannitol; xylose, arabinose, ribose, ramnorth, glucose, fructose, galactose, mannose, sorbitol, serobiose, maltose, isomartose, trehalose, sucrose, raffinose, gentianose, Examples thereof include saccharides such as merenthoth; as well as partially etherified products thereof, and methylglucoside (saccharifier) and the like.
  • the first rust inhibitor (B1) contains a sorbitan fatty acid ester (B1-2). Even when the sorbitan fatty acid ester (B1-2) is used alone, it cannot exhibit sufficient rust resistance against the base oil (A) satisfying the above requirement ( ⁇ ). However, when used in combination with the succinic acid ester (B1-1), it exhibits excellent rust resistance against the base oil (A) satisfying the above requirement ( ⁇ ).
  • the sorbitan fatty acid ester (B1-2) is not particularly limited as long as the effects of the present invention can be exhibited, and one type may be used alone or two or more types may be used in combination.
  • the sorbitan fatty acid ester (B1-2) is an ester compound of sorbitan and a fatty acid having 12 or more and 30 or less carbon atoms from the viewpoint of facilitating the effect of the present invention. Is preferable.
  • sorbitan laurate sorbitan tridecanoate
  • sorbitan myristate sorbitan pentadecanoate
  • sorbitan palmitate sorbitan margarate
  • sorbitan stearate sorbitan oleate
  • examples thereof include sorbitan nonadecanate, sorbitan arachidate, sorbitan eicosenoate, sorbitan henicosylate, sorbitan behenate, sorbitan erucate, sorbitan tricosylate, and sorbitan lignoserate.
  • the aliphatic hydrocarbon group contained in the fatty acid constituting the sorbitan fatty acid ester (B1-2) may be linear or branched.
  • the sorbitan fatty acid ester (B1-2) is preferably an ester compound with a fatty acid having 12 or more and 20 or less carbon atoms, and more preferably 16 or more carbon atoms. It is an ester compound with 20 or less fatty acids, and more preferably sorbitan oleate.
  • the ester valence number of the sorbitan fatty acid ester is not particularly limited, but is preferably 1, 2, or 3.
  • the content of the first rust inhibitor (B1) is the lubricating oil composition as defined by the above requirement ( ⁇ ). It is more than 0.02% by mass and less than 0.16% by mass based on the total amount of.
  • the content of the first rust inhibitor (B1) is 0.02% by mass or less and 0.16% by mass or more based on the total amount of the lubricating oil composition, the above requirement ( ⁇ ) is satisfied. Sufficient rust resistance cannot be exhibited against the filling base oil (A).
  • the content of the first rust preventive agent (B1) defined in the above requirement ( ⁇ ) is a lubricating oil composition excellent in anti-emulsifying property from the viewpoint of making it easier to improve the rust preventive property. From this point of view, it is preferably 0.03% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.07% by mass or more, still more preferably 0.08 based on the total amount of the lubricating oil composition. It is mass% or more. Further, it is preferably 0.15% by mass or less, more preferably 0.14% by mass or less, still more preferably 0.13% by mass or less, still more preferably 0.12% by mass or less.
  • the upper and lower limits of these numerical ranges can be arbitrarily combined. Specifically, it is preferably 0.03% by mass to 0.15% by mass, more preferably 0.05% by mass to 0.14% by mass or less, and further preferably 0.07% by mass to 0.13% by mass. Even more preferably, it is 0.08% by mass to 0.12% by mass.
  • the lubricating oil composition according to one aspect of the present invention has a content ratio of succinic acid ester (B1-1) and sorbitan fatty acid ester (B1-2) [(B1-B1-)) from the viewpoint of facilitating the effect of the present invention.
  • 1) / (B1-2)] is preferably 0.1 or more and 5.0 or less in terms of mass ratio. From the viewpoint of making it easier to exert the effect of the present invention, [(B1-1) / (B1-2)] is preferably 0.2 or more, more preferably 0.5 or more, still more preferably 0. 8 or more.
  • it is preferably 4.0 or less, more preferably 2.0 or less, still more preferably 1.2 or less.
  • the upper and lower limits of these numerical ranges can be arbitrarily combined. Specifically, it is preferably 0.2 to 4.0, more preferably 0.5 to 2.0, and even more preferably 0.8 to 1.2.
  • the content of the succinic acid ester (B1-1) is preferably 0 based on the total amount of the lubricating oil composition from the viewpoint of facilitating the effect of the present invention. It is more than 0.01% by mass, more preferably 0.02% by mass or more, still more preferably 0.03% by mass or more, still more preferably 0.04% by mass or more. Further, it is preferably less than 0.08% by mass, more preferably 0.07% by mass or less, still more preferably 0.06% by mass or less. The upper and lower limits of these numerical ranges can be arbitrarily combined.
  • it is preferably more than 0.01% by mass to less than 0.08% by mass, more preferably 0.02% by mass to 0.07% by mass, and further preferably 0.03% by mass to 0.07% by mass. , Even more preferably 0.04% by mass to 0.06% by mass.
  • the content of the sorbitan fatty acid ester (B1-2) is preferably 0 based on the total amount of the lubricating oil composition from the viewpoint of facilitating the effect of the present invention. It is more than 0.01% by mass, more preferably 0.02% by mass or more, still more preferably 0.03% by mass or more, still more preferably 0.04% by mass or more. Further, it is preferably less than 0.08% by mass, more preferably 0.07% by mass or less, still more preferably 0.06% by mass or less. The upper and lower limits of these numerical ranges can be arbitrarily combined.
  • it is preferably more than 0.01% by mass to less than 0.08% by mass, more preferably 0.02% by mass to 0.07% by mass, and further preferably 0.03% by mass to 0.07% by mass. , Even more preferably 0.04% by mass to 0.06% by mass.
  • the second rust inhibitor (B2) is a carboxylic acid amide (B2-1).
  • the carboxylic acid amide (B2-1) is not particularly limited as long as the effects of the present invention can be exhibited, and one type may be used alone or two or more types may be used in combination.
  • the carboxylic acid amide (B2-1) is preferably a carboxylic acid amide having an acid value of 80 mgKOH / g or less from the viewpoint of facilitating the effect of the present invention. ..
  • the acid value is more preferably 70 mgKOH / g or less, still more preferably 65 mgKOH / g or less.
  • the lower limit of the acid value is not particularly limited, but is usually 10 mgKOH / g or more.
  • the acid value of the carboxylic acid amide is a value measured in accordance with JIS K2501: 2003 5 (indicator titration method).
  • Specific examples of the preferred compound as the carboxylic acid amide (B2-1) are caproic acid, capric acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, araquinic acid, behenic acid, lignoseric acid and zomarinic acid.
  • the carbon number of the alkenyl group of the alkenyl succinic anhydride and the carbon number of the alkyl group of the alkyl succinic anhydride are preferably 11 to 13 in consideration of the solubility in the base oil and the rust prevention performance.
  • Preferred examples of the amine include polyalkylene polyamines. Examples of polyalkylene polyamines include diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, hexaethyleneheptamine, hexaethyleneoctamine and the like. Among these, triethylenetetramine is preferable.
  • the carboxylic acid amide (B2-1) a carboxylic acid alkanolamide is also suitable.
  • carboxylic acid alkanolamide examples include lauric acid diethanolamide, oleic acid diethanolamide, stearic acid diethanolamide, oleic acid monoethanolamide, oleic acid monopropanol amide, and oleic acid dipropanol amide.
  • the content of the second rust inhibitor (B2) is the lubricating oil composition as defined by the above requirement ( ⁇ ). It is more than 0.05% by mass and 0.5% by mass or less on the basis of the total amount of.
  • the content of the second rust preventive agent (B2) is 0.05% by mass or less and more than 0.5% by mass based on the total amount of the lubricating oil composition, the above requirement ( ⁇ ) is satisfied. Sufficient rust resistance cannot be exhibited against the filling base oil (A).
  • the content of the second rust preventive agent (B2) defined in the above requirement ( ⁇ ) is a lubricating oil composition excellent in anti-emulsifying property from the viewpoint of making it easier to improve the rust preventive property.
  • it is preferably 0.06% by mass or more, more preferably 0.08% by mass or more, and further preferably 0.10% by mass or more based on the total amount of the lubricating oil composition.
  • it is preferably 0.40% by mass or less, more preferably 0.30% by mass or less, still more preferably 0.25% by mass or less, still more preferably 0.20% by mass or less.
  • the upper and lower limits of these numerical ranges can be arbitrarily combined.
  • it is preferably 0.06% by mass to 0.40% by mass, more preferably 0.08% by mass to 0.30% by mass or less, and further preferably 0.08% by mass to 0.25% by mass. Even more preferably, it is 0.10% by mass to 0.20% by mass.
  • the third rust inhibitor (B3) is a neutral alkyl phosphate ester (B3-1).
  • the neutral alkyl phosphate ester (B3-1) is not particularly limited as long as the effects of the present invention can be exhibited, and one type may be used alone or two or more types may be used in combination.
  • R1 to R3 are independently alkyl groups having 3 to 14 carbon atoms.
  • the alkyl group having 3 to 14 carbon atoms that can be selected as R 1 to R 3 include a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group and an undecyl group. Examples thereof include a dodecyl group, a tridecyl group and a tetradecyl group.
  • These alkyl groups may be linear or branched.
  • the content of the third rust inhibitor (B3) is the lubricating oil composition as defined by the above requirement ( ⁇ ). Based on the total amount of the above, it is 0.005% by mass or more and less than 0.05% by mass. When the content of the third rust inhibitor (B3) is less than 0.005% by mass and 0.05% by mass or more based on the total amount of the lubricating oil composition, the above requirement ( ⁇ ) is satisfied. Sufficient rust resistance cannot be exhibited against the filling base oil (A).
  • the content of the third rust preventive agent (B3) defined in the above requirement ( ⁇ ) is a lubricating oil composition excellent in anti-emulsifying property from the viewpoint of making it easier to improve the rust preventive property.
  • the total amount of the lubricating oil composition is preferably 0.006% by mass to 0.04% by mass, more preferably 0.01% by mass to 0.03% by mass or less, and further preferably 0.01. It is from% by mass to 0.02% by mass.
  • the fourth rust inhibitor (B4) is a combination of a fatty acid (B4-1) having 12 or more carbon atoms and a primary amine (B4-2).
  • the fourth rust inhibitor (B4) contains a fatty acid (B4-1) having 12 or more carbon atoms. Even when the fatty acid (B4-1) having 12 or more carbon atoms is used alone, it cannot exhibit sufficient rust resistance against the base oil (A) satisfying the above requirement ( ⁇ ). However, when used in combination with the primary amine (B4-2), it exhibits excellent rust resistance against the base oil (A) satisfying the above requirement ( ⁇ ).
  • the fatty acid (B4-1) having 12 or more carbon atoms is not particularly limited as long as the effect of the present invention can be exhibited, and one type may be used alone or two or more types may be used in combination.
  • the fatty acid (B4-1) having 12 or more carbon atoms has 12 to 20 carbon atoms from the viewpoint of facilitating the effect of the present invention and suppressing the generation of sludge. It is preferably a fatty acid.
  • fatty acid examples include lauric acid, tridecanoic acid, myristic acid, pentadecanoic acid, palmitic acid, margaric acid, stealic acid, oleic acid, nonadecanic acid, arachidic acid, eicosenoic acid, henicosyl acid, bechenic acid, erucic acid, tricosyl acid, and the like. Lignoceric acid and the like can be mentioned.
  • the aliphatic hydrocarbon group constituting the fatty acid (B4-1) having 12 or more carbon atoms may be linear or branched.
  • the fourth rust inhibitor (B4) contains a primary amine (B4-2). Even when the primary amine (B4-2) is used alone, it cannot exhibit sufficient rust resistance against the base oil (A) satisfying the above requirement ( ⁇ ). However, when used in combination with a fatty acid (B4-1) having 12 or more carbon atoms, it exhibits excellent rust resistance against the base oil (A) satisfying the above requirement ( ⁇ ).
  • the primary amine (B4-2) is not particularly limited as long as the effect of the present invention can be exhibited, and one type may be used alone or two or more types may be used in combination.
  • the primary amine (B4-2) is a hydrocarbon group having 3 to 20 carbon atoms from the viewpoint of facilitating the effect of the present invention and suppressing the generation of sludge.
  • a primary amine having a hydrocarbon group having 6 to 12 carbon atoms is preferable, and a primary amine having a hydrocarbon group having 6 to 12 carbon atoms is more preferable.
  • Preferred examples of the hydrocarbon group include an alkyl group and an alkenyl group.
  • alkyl group examples include a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group and the like. These alkyl groups may be linear or branched.
  • alkenyl group examples include a hexenyl group, a heptenyl group, an octenyl group, a nonenyl group, a decenyl group, an undecenyl group, a dodecenyl group and the like. These alkenyl groups may be linear or branched chain.
  • the primary amine (B4-2) includes, for example, hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, dodecylamine, hexenylamine, heptenylamine, octenylamine, nonenylamine, decenylamine, and the like. Examples thereof include undecenylamine and dodecenylamine.
  • the content of the fourth rust inhibitor (B4) is the lubricating oil composition as defined by the above requirement ( ⁇ ). It is more than 0.05% by mass and less than 0.20% by mass based on the total amount of.
  • the content of the fourth rust inhibitor (B4) is 0.05% by mass or less and 0.20% by mass or more based on the total amount of the lubricating oil composition, the above requirement ( ⁇ ) is satisfied. Sufficient rust resistance cannot be exhibited against the filling base oil (A).
  • the content of the fourth rust preventive agent (B4) defined in the above requirement ( ⁇ ) is a lubricating oil composition excellent in anti-emulsifying property from the viewpoint of making it easier to improve the rust preventive property.
  • it is preferably 0.06% by mass or more, more preferably 0.08% by mass or more, and further preferably 0.10% by mass or more based on the total amount of the lubricating oil composition.
  • it is preferably 0.19% by mass or less, more preferably 0.17% by mass or less, and further preferably 0.15% by mass or less.
  • the upper and lower limits of these numerical ranges can be arbitrarily combined. Specifically, it is preferably 0.06% by mass to 0.19% by mass, more preferably 0.08% by mass to 0.17% by mass or less, and further preferably 0.10% by mass to 0.15% by mass. be.
  • the lubricating oil composition according to one aspect of the present invention has a content ratio of a fatty acid (B4-1) having 12 or more carbon atoms and a primary amine (B4-2) from the viewpoint of facilitating the effect of the present invention.
  • (B4-1) / (B4-2)] is preferably 0.03 or more and 3.0 or less in terms of mass ratio. From the viewpoint of making it easier to exert the effect of the present invention, [(B4-1) / (B4-2)] is preferably 0.10 or more, more preferably 0.15 or more, still more preferably 0. 20 or more.
  • it is preferably 2.0 or less, more preferably 1.0 or less, and further preferably 0.40 or less.
  • the upper and lower limits of these numerical ranges can be arbitrarily combined. Specifically, it is preferably 0.10 to 2.0, more preferably 0.20 to 1.0, and even more preferably 0.20 to 0.40.
  • the content of the fatty acid (B4-1) having 12 or more carbon atoms is based on the total mass of the lubricating oil composition from the viewpoint of facilitating the effect of the present invention. It is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, and further preferably 0.025% by mass or more. Further, it is preferably 0.05% by mass or less, more preferably 0.04% by mass or less, and further preferably 0.035% by mass or less. The upper and lower limits of these numerical ranges can be arbitrarily combined. Specifically, it is preferably 0.01% by mass to 0.05% by mass, more preferably 0.02% by mass to 0.04% by mass, and further preferably 0.025% by mass to 0.035% by mass. ..
  • the content of the primary amine (B4-2) is preferably 0 based on the total amount of the lubricating oil composition from the viewpoint of facilitating the effect of the present invention. It is 0.05% by mass or more, more preferably 0.07% by mass or more, still more preferably 0.09% by mass or more. Further, it is preferably 0.19% by mass or less, more preferably 0.15% by mass or less, and further preferably 0.11% by mass or less. The upper and lower limits of these numerical ranges can be arbitrarily combined. Specifically, it is preferably 0.05% by mass to 0.19% by mass, more preferably 0.07% by mass to 0.15% by mass, and further preferably 0.09% by mass to 0.11% by mass. ..
  • the lubricating oil composition of one aspect of the present invention may contain a rust preventive agent (B') other than the rust preventive agent (B), but the rust preventive agent (B') is the above requirement ( ⁇ ). ) Sufficient rust resistance cannot be exhibited against the base oil (A). Therefore, it is preferable that the content of the rust preventive agent (B') is small. Specifically, the content of the rust preventive agent (B') is preferably less than 0.01% by mass, more preferably less than 0.008% by mass, and more preferably 0. It is less than 001% by mass, most preferably does not contain a rust inhibitor (B').
  • Examples of the rust preventive agent (B') include benzotriazole compounds, acidic phosphoric acid esters, amine salts of acidic phosphoric acid esters, phosphite esters, amine salts of sulphate esters, hydrogen phosphite esters, and subsistences.
  • Examples include amine salts of hydrogen phosphate esters, fatty acids with less than 12 carbon atoms, and sarcosine derivatives.
  • the lubricating oil composition according to one aspect of the present invention preferably contains an antioxidant (C) from the viewpoint of improving oxidative stability. Further, the lubricating oil composition according to one aspect of the present invention preferably contains a wear resistant agent (D) from the viewpoint of improving wear resistance. Further, the lubricating oil composition according to one aspect of the present invention preferably contains a defoaming agent (E) from the viewpoint of preventing foaming of the lubricating oil composition.
  • the lubricating oil composition of one aspect of the present invention contains one or more additives selected from the group consisting of an antioxidant (C), an abrasion resistant agent (D), and an antifoaming agent (E). It is more preferable to contain two or more kinds of additives, and it is further more preferable to contain all three kinds of additives.
  • the lubricating oil composition of one aspect of the present invention one or more additions selected from the group consisting of the component (A) and the component (B), and the component (C), the component (D), and the component (E).
  • the total content of the agent is preferably 90% by mass to 100% by mass, more preferably 95% by mass to 100% by mass, and further preferably 99% by mass to 100% by mass based on the total amount of the lubricating oil composition.
  • antioxidant (C) any antioxidant having an effect of suppressing the oxidation of the lubricating oil composition can be used without particular limitation.
  • one or more selected from the group consisting of a phenol-based antioxidant and an amine-based antioxidant can be mentioned. Of these, phenolic antioxidants are preferred.
  • phenolic antioxidant any compound that does not contain an amino group and has a phenol structure and has an effect of suppressing the oxidation of the lubricating oil composition can be used without particular limitation.
  • the phenol-based antioxidant include monocyclic phenol-based antioxidants and polycyclic phenol-based antioxidants.
  • monocyclic phenolic antioxidant include 2,6-di-t-butyl-4-methylphenol, 2,6-di-t-butyl-4-ethylphenol, and 2,4,6-tri-.
  • polycyclic phenolic antioxidant examples include 4,4'-methylenebis (2,6-di-t-butylphenol), 4,4'-isopropyridenebis (2,6-di-t-butylphenol), and the like.
  • the amine-based antioxidant (B) may be a compound in which at least one hydrogen atom of ammonia (NH 3 ) is substituted with a hydrocarbon group and has an effect of suppressing oxidation of the lubricating oil composition. If so, it can be used without any particular limitation.
  • Examples of the amine-based antioxidant include diphenylamine compounds and naphthylamine-based compounds.
  • diphenylamine-based compound examples include monoalkyldiphenylamine-based compounds such as monooctyldiphenylamine and monononyldiphenylamine; 4,4'-dibutyldiphenylamine, 4,4'-dipentyldiphenylamine, 4,4'-dihexyldiphenylamine, 4,4.
  • Dialkyldiphenylamine compounds such as'-diheptyldiphenylamine, 4,4'-dioctyldiphenylamine, 4,4'-dinonyldiphenylamine; polyalkyldiphenylamine-based compounds such as tetrabutyldiphenylamine, tetrahexyldiphenylamine, tetraoctyldiphenylamine, tetranonyldiphenylamine. ; 4,4'-Bis ( ⁇ , ⁇ -dimethylbenzyl) diphenylamine and the like can be mentioned.
  • naphthylamine-based compounds include 1-naphthylamine, phenyl-1-naphthylamine, butylphenyl-1-naphthylamine, pentylphenyl-1-naphthylamine, hexylphenyl-1-naphthylamine, heptylphenyl-1-naphthylamine, and octylphenyl-1.
  • the content of the antioxidant (C) is appropriately adjusted within a range capable of exerting the effect of suppressing the oxidation of the lubricating oil composition.
  • the content of the antioxidant (C) is preferably 0.3% by mass to 1.0% by mass, more preferably 0.4% by mass to 0% by mass based on the total amount of the lubricating oil composition. It is 8% by mass, more preferably 0.5% by mass to 0.7% by mass.
  • examples of the wear resistant agent (D) include a neutral aromatic phosphoric acid ester represented by the following general formula (d-1).
  • R 11 to R 13 are independently alkyl groups having 1 to 12 carbon atoms.
  • the alkyl group is the same as the alkyl group that can be selected as R 1 to R 3 in the above general formula (b3-1) of the neutral alkyl phosphoric acid ester (B3-1), and further, a methyl group and a methyl group. Ethyl group is mentioned.
  • the alkyl group which can be selected as R 11 to R 13 has 1 to 12 carbon atoms, preferably 1 to 10, more preferably 1 to 8, still more preferably 1 to 6, and even more preferably. It is 1 to 3, and even more preferably 1. Further, p1 to p3 are independently integers of 1 to 5, preferably an integer of 1 to 2, and more preferably 1.
  • the neutral aromatic phosphoric acid ester represented by the general formula (d-1) has a similar molecular skeleton to the neutral alkyl phosphoric acid ester used as the rust preventive agent (B3), the above requirements are required.
  • the rust preventive property cannot be sufficiently exhibited with respect to the base oil (A) satisfying ( ⁇ ). That is, both the neutral alkyl phosphate ester and the neutral aromatic phosphate ester are compounds included in the normal phosphate ester, but they sufficiently exhibit rust resistance against the base oil satisfying the above requirement ( ⁇ ). It is important to use a positive phosphate ester in which the substituent is an alkyl group rather than an aromatic group.
  • the content of the wear resistant agent (D) is appropriately adjusted within a range in which the wear resistance improving effect can be exhibited.
  • the content of the wear resistant agent (D) is preferably 0.1% by mass to 0.7% by mass, more preferably 0.2% by mass to 0.% based on the total amount of the lubricating oil composition. It is 6% by mass, more preferably 0.3% by mass to 0.5% by mass.
  • the defoaming agent (E) a compound having an effect of suppressing foaming of the lubricating oil composition can be used without particular limitation.
  • examples of the defoaming agent (E) include silicone-based defoaming agents, fluorosilicone oils, fluorosilicone-based defoaming agents such as fluoroalkyl ethers, and polyacrylate-based defoaming agents.
  • the content of the defoaming agent (E) in terms of resin content is preferably 0.0001% by mass to 0.20% by mass, more preferably 0.20% by mass, based on the total amount of the lubricating oil composition. It is 0.0005% by mass to 0.10% by mass.
  • the lubricating oil composition according to one aspect of the present invention comprises a rust preventive agent (B), an antioxidant (C), an abrasion resistant agent (D), and an antifoaming agent (E) as long as the effects of the present invention are not impaired.
  • Other additives for lubricating oil may be contained. Examples of the additive for lubricating oil include an extreme pressure agent, a friction modifier, and a metal inactivating agent. These lubricant additives may be used alone or in combination of two or more.
  • the 100 ° C. kinematic viscosity of the lubricating oil composition according to one aspect of the present invention is preferably 5.0 mm 2 / s to 10.0 mm 2 / s, more preferably 6.0 mm 2 / s to 9.0 mm 2 / s. More preferably, it is 6.4 mm 2 / s to 8.6 mm 2 / s.
  • the viscosity index of the lubricating oil composition according to one aspect of the present invention is preferably 100 or more, more preferably 110 or more, and even more preferably 120 or more. In the present specification, the 100 ° C. kinematic viscosity and the viscosity index of the lubricating oil composition are values measured or calculated in accordance with JIS K 2283: 2000.
  • the lubricating oil composition according to one aspect of the present invention preferably has a flash point of 250 ° C. or higher from the viewpoint of safety and handleability during storage and transportation.
  • the flash point of the lubricating oil composition means a value measured by the Cleveland opening method in accordance with JIS K2265-4: 2007 (How to obtain the flash point-Part 4: Cleveland opening method).
  • the lubricating oil composition of one aspect of the present invention does not generate rust in the test according to JIS K2510: 1998 (method B, artificial seawater method) described in Examples described later.
  • the lubricating oil composition according to one aspect of the present invention preferably takes 20 minutes or less to be separated in the water separability test based on JIS K2520: 2000 described in Examples described later. It is more preferably minutes or less, and even more preferably 10 minutes or less.
  • the method for producing the lubricating oil composition of the present invention is not particularly limited.
  • the method for producing a lubricating oil composition according to one aspect of the present invention is a method for producing a lubricating oil composition, which comprises a step of mixing a base oil (A) and a rust preventive agent (B).
  • the base oil (A) satisfies the following requirement ( ⁇ ) and meets the following requirements ( ⁇ ).
  • the gas chromatogram measured according to ASTM D 7500 by a gas chromatography distillation apparatus has a peak in the range of more than 11 carbon atoms and less than 23 carbon atoms.
  • the rust inhibitor (B) is selected from the group consisting of a first rust inhibitor (B1), a second rust inhibitor (B2), a third rust inhibitor (B3), and a fourth rust inhibitor (B4). It is more than one kind to be done, -The first rust inhibitor (B1): a combination of succinic acid ester (B1-1) and sorbitan fatty acid ester (B1-2) -The second rust inhibitor (B2): carboxylic acid amide (B2-1) -The third rust inhibitor (B3): neutral alkyl phosphate ester (B3-1) Fourth rust inhibitor (B4): Combination of fatty acid (B4-1) having 12 or more carbon atoms and primary amine (B4-2) The first rust inhibitor (B1), the second rust inhibitor ( B2), the third rust preventive agent (B3), and the fourth rust preventive agent (B4) are blended in a lubricating oil composition that satisfies the following requirement ( ⁇ ) based on
  • a method of mixing the above components Is not particularly limited, and examples thereof include a method having a step of blending the rust preventive agent (B) with the base oil (A).
  • each component may be blended after adding a diluted oil or the like to form a solution (dispersion). After blending each component, it is preferable to stir and uniformly disperse by a known method.
  • the lubricating oil composition according to one aspect of the present invention can be suitably used as a lubricating oil composition used for equipment in which water or water vapor may be mixed.
  • equipment that may be mixed with water or steam include turbine equipment such as a steam turbine.
  • the lubricating oil composition of one aspect of the present invention can be suitably used as a turbine oil used for lubricating turbine equipment. Therefore, according to the lubricating oil composition of the present invention, there is provided a method of using the lubricating oil composition for turbine equipment.
  • the antioxidant (C) blended in the lubricating oil composition is preferably a phenolic antioxidant, and an amine. It is preferable that the content of the system antioxidant is small. Specifically, the content of the amine-based antioxidant is preferably less than 0.1% by mass, more preferably less than 0.01% by mass, and most preferably amine-based antioxidant based on the total amount of the lubricating oil composition. It does not contain any agent.
  • the base oil (A) satisfies the following requirement ( ⁇ ) and meets the following requirements ( ⁇ ).
  • the gas chromatogram measured according to ASTM D 7500 by a gas chromatography distillation apparatus has a peak in the range of more than 11 carbon atoms and less than 23 carbon atoms.
  • the rust inhibitor (B) is selected from the group consisting of a first rust inhibitor (B1), a second rust inhibitor (B2), a third rust inhibitor (B3), and a fourth rust inhibitor (B4). It is more than one kind to be done, -The first rust inhibitor (B1): a combination of succinic acid ester (B1-1) and sorbitan fatty acid ester (B1-2) -The second rust inhibitor (B2): carboxylic acid amide (B2-1) -The third rust inhibitor (B3): neutral alkyl phosphate ester (B3-1)
  • the first rust inhibitor The lubricating oil composition according to the above [1], wherein the succinic acid ester (B1-1) contains an alkenyl succinic acid polyvalent alcohol ester in the agent (B1).
  • the sorbitan fatty acid ester (B1-2) contains an ester compound of sorbitan and a fatty acid having 12 or more and 30 or less carbon atoms, according to the above [1] or [2].
  • the lubricating oil composition according to. [4] The lubrication according to any one of [1] to [3] above, wherein in the second rust preventive agent (B2), the carboxylic acid amide (B2-1) has an acid value of 80 mgKOH / g or less.
  • Oil composition. [5] The lubricating oil composition according to any one of the above [1] to [4], wherein the base oil (A) further satisfies the following requirement ( ⁇ ).
  • a method for producing a lubricating oil composition which comprises a step of mixing a base oil (A) and a rust preventive agent (B).
  • the base oil (A) satisfies the following requirement ( ⁇ ) and meets the following requirements ( ⁇ ).
  • the gas chromatogram measured according to ASTM D 7500 by a gas chromatography distillation apparatus has a peak in the range of more than 11 carbon atoms and less than 23 carbon atoms.
  • the rust inhibitor (B) is selected from the group consisting of a first rust inhibitor (B1), a second rust inhibitor (B2), a third rust inhibitor (B3), and a fourth rust inhibitor (B4). It is more than one kind to be done, -The first rust inhibitor (B1): a combination of succinic acid ester (B1-1) and sorbitan fatty acid ester (B1-2) -The second rust inhibitor (B2): carboxylic acid amide (B2-1) -The third rust inhibitor (B3): neutral alkyl phosphate ester (B3-1) Fourth rust inhibitor (B4): Combination of fatty acid (B4-1) having 12 or more carbon atoms and primary amine (B4-2) The first rust inhibitor (B1), the second rust inhibitor ( B2), the third rust preventive agent (B3), and the fourth rust preventive agent (B4) are blended in a lubricating oil composition that satisfies the following requirement ( ⁇ ) based on
  • Examples 1 to 5, Comparative Examples 1 to 24, and Reference Example 1 The base oils and various additives shown below were sufficiently mixed in the blending amounts (% by mass) shown in Tables 1 to 7 to prepare lubricating oil compositions. Details of the base oil and various additives used in Examples 1 to 5, Comparative Examples 1 to 24, and Reference Example 1 are as shown below.
  • ⁇ Rust inhibitor (B)> First rust inhibitor (B1)) "Succinic acid ester (B1-1)”: Alkenyl succinic acid polyhydric alcohol ester "Sorbitan fatty acid ester (B1-2)”: Sorbitan monooleate (second rust preventive agent (B2)) "Carboxylic acid amide (B2-1)”: Carboxylic acid amide having an acid value of 60 mgKOH / g (carboxylic acid amide consisting of 3-dodecenyldihydro-2,5-furandion and triethylenetetramine) (Third rust inhibitor (B3)) "Adipose phosphate ester (B3)”: Alkyl phosphate ester (12 carbon atoms) (Fourth rust inhibitor (B4)) "Fatile with 12 or more carbon atoms (B4-1)”: Lauric acid "Primary amine (B4-2)”: Octylamine (rust inhibitor (B'))
  • Silicone-based defoaming agent The content of the silicone-based defoaming agent shown in Tables 1 to 7 is the content including the diluted oil, and the content of the silicone-based defoaming agent in terms of resin content is the lubricating oil composition. It is 0.001% by mass based on the total amount of.
  • a Capacity of oil layer (unit: mL)
  • b Capacity of water layer (unit: mL)
  • c Capacity of emulsified layer (unit: mL)
  • d Time required for separation (unit: minutes)
  • the evaluation result of anti-emulsifying property shows that a is close to 40 mL, b is close to 40 mL, c is close to 0 mL, and d is short, the better the anti-emulsifying property is.
  • the chromatogram of the base oil (A) has a peak (first peak) in the range of more than 11 carbon atoms and less than 23 carbon atoms, and satisfies the requirement ( ⁇ ). Therefore, it can be seen that the base oil (A) is a base oil containing a polar substance having an action of remarkably deteriorating the rust preventive property. Further, the chromatogram of the base oil (A) has a peak (second peak) in the range of 23 or more and 50 or less carbon atoms.
  • the intensity ratio [(first peak intensity) / (second peak intensity)] between the first peak and the second peak in the gas chromatogram of the base oil (A) was 0.31.
  • the chromatogram of the base oil (A') does not have a peak (first peak) in the range of more than 11 carbon atoms and less than 23 carbon atoms, and does not satisfy the above requirement ( ⁇ ). Therefore, it can be seen that the base oil (A') is a base oil that does not substantially contain a polar substance having an action of remarkably deteriorating the rust preventive property.

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PCT/JP2021/047982 2020-12-25 2021-12-23 潤滑油組成物、並びに潤滑油組成物の使用方法及び製造方法 Ceased WO2022138852A1 (ja)

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