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WO2018180826A1 - Composition de graisse lubrifiante, palier à roulement et roulement de moyeu - Google Patents

Composition de graisse lubrifiante, palier à roulement et roulement de moyeu Download PDF

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Publication number
WO2018180826A1
WO2018180826A1 PCT/JP2018/011255 JP2018011255W WO2018180826A1 WO 2018180826 A1 WO2018180826 A1 WO 2018180826A1 JP 2018011255 W JP2018011255 W JP 2018011255W WO 2018180826 A1 WO2018180826 A1 WO 2018180826A1
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WO
WIPO (PCT)
Prior art keywords
grease composition
thickener
grease
bearing
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/011255
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English (en)
Japanese (ja)
Inventor
佐藤　洋司
三上　英信
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Publication of WO2018180826A1 publication Critical patent/WO2018180826A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M115/00—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof
    • C10M115/08—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • C10M169/02—Mixtures of base-materials and thickeners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • 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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation

Definitions

  • the present invention relates to a grease composition.
  • the present invention also relates to a rolling bearing and a hub bearing in which the grease composition is enclosed.
  • a hub bearing is a bearing for a vehicle of an automobile, and is designed to reduce the number of parts and reduce the weight by unitizing with a hub wheel and a housing which are peripheral parts of the bearing.
  • carbon steel for mechanical structures such as S53C (high frequency heat treatment is used for the raceway part) is used. Lubrication specifications are important.
  • JP 2011-178824 A Japanese Unexamined Patent Publication No. 2016-50234
  • Patent Document 1 does not consider a decrease in the viscosity of grease due to shearing. Although most greases decrease in viscosity when subjected to shearing, they are not formulated to aggressively target them, so a sufficient decrease in viscosity cannot be expected, and the bearing torque may be difficult to decrease. In Patent Document 2, various waxes are added, but attention is not paid to a decrease in the viscosity of grease due to shearing, and the viscosity does not actually decrease.
  • the behavior of grease includes a charring property in which the grease is always thick on the rolling element and the raceway surface, and a channeling property in which the grease is eliminated and the rolling element and the raceway surface are only thinly present.
  • channeling properties low torque is likely to occur, but there is a risk of poor lubrication due to the small amount of lubricant.
  • the present invention has been made to cope with such problems, and when encapsulated in a rolling bearing or a hub bearing, when used under shear, the viscosity is surely lowered and torque can be reduced. It is an object of the present invention to provide a grease composition that can be reduced in behavior due to its churning behavior and a rolling bearing and a hub bearing in which the grease composition is enclosed.
  • the grease composition of the present invention is a grease composition containing a base oil and a thickener, wherein the base oil is at least one selected from mineral oil and synthetic oil, and the thickener is a first composition.
  • the total amount of the second thickener is 5 to 30% by mass.
  • the grease composition has an unmixed consistency of 170 to 400, and the viscosity change index n in the following formula (1) is negative.
  • the index ratio n2 / n1 shown in the following formula (2) is in the range of 2 to 4.
  • the second thickener is N, N'-ethylenebisstearic acid amide.
  • the base oil is a paraffinic mineral oil or poly- ⁇ -olefin (PAO) oil, and the kinematic viscosity at 40 ° C. of the base oil is 30 to 60 mm 2 / s.
  • PAO poly- ⁇ -olefin
  • the aromatic diurea compound is obtained by reacting a diisocyanate component with an aromatic monoamine that is a monoamine component, and the aromatic monoamine is aniline or p-toluidine.
  • a rolling bearing according to the present invention is a rolling bearing comprising an inner ring and an outer ring, a rolling element interposed between the inner ring and the outer ring, and a grease composition sealed around the rolling element, the grease composition described above
  • the product is the grease composition of the present invention.
  • the hub bearing of the present invention is a hub bearing in which a wheel of an automobile is rotationally supported and a grease composition is enclosed in an internal space, and the grease composition is the grease composition of the present invention. .
  • the grease composition of the present invention is a grease composition containing a base oil and a thickener, and in particular, the thickener is an aromatic diurea compound which is a first thickener, and a second thickener.
  • the viscosity change index in the approximate expression of the strain-shear viscosity plot by viscosity measurement satisfies the predetermined relational expression, etc.
  • the bearing torque is lowered.
  • N, N′-ethylenebisstearic acid amide as the second thickener.
  • the rolling bearing and the hub bearing of the present invention enclose the grease composition, the rotational torque is reduced while suppressing poor lubrication.
  • the grease composition of the present invention includes a base oil and a thickener.
  • this grease composition has an immiscibility (JIS K 2220) of 170 to 400, a viscosity change index n in the following formula (1) is a negative value, and an index shown in the following formula (2).
  • the ratio n2 / n1 is in the range of 2 to 4.
  • a decrease in the viscosity of the grease due to shearing is taken into consideration.
  • two types of thickeners that increase this viscosity drop are used (one fixed to an aromatic diurea compound).
  • the second thickener is compared with the slope of the grease of the first thickener alone in the slope of the strain-shear viscosity plot (index of equation (1)).
  • the base oil of the grease composition of the present invention can be a common one that is usually used in the field of grease.
  • mineral oil such as spindle oil, refrigerating machine oil, turbine oil, machine oil and dynamo oil
  • hydrocarbon synthetic oil such as PAO oil and alkylnaphthalene
  • polyol ester oil phosphate ester oil
  • polymer ester oil aromatic ester oil
  • non-hydrocarbon synthetic oils such as carbonate ester oil, diester oil, polyglycol oil, silicone oil, polyphenyl ether oil, alkyl diphenyl ether oil, alkylbenzene oil, and fluorinated oil.
  • mineral oil is preferably used as a main component (50% by mass or more based on the total amount of base oil) because it is relatively inexpensive and can satisfy the above relational expression in the grease composition. It is particularly preferable to use only mineral oil.
  • mineral oil either a paraffinic mineral oil or a naphthenic mineral oil can be used, but it is preferable to use a paraffinic mineral oil because the change in viscosity at high temperatures is small.
  • the base oil preferably has a kinematic viscosity at 40 ° C. is 30 ⁇ 60mm 2 / s, more preferably 40 ⁇ 50mm 2 / s.
  • a kinematic viscosity at 40 ° C. is less than 30 mm 2 / s, there is a risk of oil film breakage or oil evaporation.
  • the kinematic viscosity at 40 ° C. is higher than 60 mm 2 / s, it may be difficult to reduce the torque.
  • the thickener of the grease composition of the present invention is other than A: an aromatic diurea compound that is a first thickener, and B: a first thickener that is a second thickener. It consists of a compound and satisfies the predetermined conditions in the above relational expressions (formulas (1) and (2)).
  • the predetermined condition is that the viscosity change index n in the formula (1) is a negative value, and the index ratio n2 / n1 shown in the formula (2) is in the range of 2 to 4.
  • the first thickener is an aromatic diurea compound.
  • An aromatic diurea compound is one type of diurea compound obtained by reacting a diisocyanate component with a monoamine component, and an aromatic monoamine is used as the monoamine component.
  • the diisocyanate component include phenylene diisocyanate, tolylene diisocyanate, diphenyl diisocyanate, diphenylmethane diisocyanate, octadecane diisocyanate, decane diisocyanate, and hexane diisocyanate.
  • Aromatic monoamines include aniline and p-toluidine.
  • the second thickener is a compound other than the first thickener, and satisfies the predetermined condition in the above relational expressions (formulas (1) and (2)). That is, when an aromatic diurea compound, which is the first thickener, is added to the grease containing the thickener, a compound is added which increases the viscosity of the grease due to shearing.
  • a wax having two or more amide bonds in the molecule can be used.
  • Specific examples include methylene bis stearic acid amide, ethylene bis stearic acid amide, methylene bis oleic acid amide, ethylene bis oleic acid amide, methylene diamine stearic acid oleic acid mixed bisamide, ethylene diamine stearic acid oleic acid mixed bisamide and the like.
  • Base grease can be obtained by blending each thickener with base oil.
  • a diisocyanate component and a monoamine component (aromatic monoamine) are reacted in a base oil to prepare a grease containing an aromatic diurea compound as a first thickener.
  • a second thickener is added to the grease to prepare a final grease.
  • the thickener is a total amount of the first thickener and the second thickener, and is contained in an amount of 5 to 30% by mass with respect to the entire grease composition.
  • the content is 10 to 20% by mass with respect to the entire grease composition. If the total content of the thickener is less than 5% by mass, the thickening effect is reduced, and if it exceeds 30% by mass, it may be difficult to reduce the torque.
  • the blending mass ratio of the first thickener and the second thickener is preferably (1: 2) to (2: 1).
  • additives may be added to the grease composition as necessary.
  • additives include extreme pressure agents such as organic zinc compounds and organic molybdenum compounds, antioxidants such as amine-based, phenol-based and sulfur-based compounds, anti-wear agents such as sulfur-based and phosphorus-based compounds, and polyhydric alcohols.
  • extreme pressure agents such as organic zinc compounds and organic molybdenum compounds
  • antioxidants such as amine-based, phenol-based and sulfur-based compounds
  • anti-wear agents such as sulfur-based and phosphorus-based compounds
  • polyhydric alcohols examples include rust preventives such as esters, friction reducing agents such as molybdenum disulfide and graphite, and oily agents such as esters and alcohols.
  • FIG. 1 is a sectional view of a grease-enclosed rolling bearing (deep groove ball bearing) in which a grease composition is encapsulated.
  • an inner ring 2 having an inner ring rolling surface 2a on the outer peripheral surface and an outer ring 3 having an outer ring rolling surface 3a on the inner peripheral surface are arranged concentrically, and the inner ring rolling surface 2a and the outer ring rolling surface 3a
  • a plurality of rolling elements 4 are arranged between the two.
  • a cage 5 holds the plurality of rolling elements 4.
  • a seal member 6 is fixed to an outer ring or the like, and the grease composition 7 of the present invention is sealed at least around the rolling element 4.
  • FIG. 1 illustrates a deep groove ball bearing as a bearing
  • the rolling bearing of the present invention is a cylindrical roller bearing, a tapered roller bearing, a self-aligning roller bearing, a needle roller bearing, a thrust cylindrical roller bearing, or a thrust tapered roller other than those described above. It can also be used as a bearing, a thrust needle roller bearing, a thrust spherical roller bearing and the like.
  • FIG. 2 is a cross-sectional view of the hub bearing.
  • the hub bearing 26 includes an inner member 25 having a hub wheel 21 and an inner ring 22, an outer member 23 that is an outer ring, and double-row rolling elements 24 and 24.
  • the hub wheel 21 integrally has a wheel mounting flange 21d for mounting a wheel (not shown) at one end thereof, an inner rolling surface 21a on the outer periphery, and a small diameter step extending in the axial direction from the inner rolling surface 21a.
  • a portion 21b is formed.
  • “outside” means the outside in the width direction when assembled to the vehicle
  • “inside” means the center in the width direction.
  • the inner ring 22 having an inner rolling surface 22a formed on the outer periphery is press-fitted into the small-diameter step portion 21b of the hub wheel 21.
  • the inner ring 22 is prevented from coming off from the hub wheel 21 in the axial direction by a crimping portion 21c formed by plastically deforming the end of the small-diameter stepped portion 21b of the hub wheel 21 radially outward.
  • the outer member 23 integrally has a vehicle body mounting flange 23b on the outer periphery, an outer rolling surface 23a, 23a on the inner periphery, and an inner rolling surface 21a opposite to the double row outer rolling surfaces 23a, 23a, Double row rolling elements 24, 24 are accommodated between 22a and 22a.
  • the grease composition of the present invention is sealed in an internal space surrounded by the seal member 27, the outer member 23, the seal member 28, the inner member 25, and the hub wheel 21, and the outer member 23, It is located around the double row rolling elements 24, 24 sandwiched between the side members 25, and the rolling surfaces of the rolling elements 24, 24 and the inner rolling surfaces 21a, 22a and the outer rolling surfaces 23a, 23a. It is used for lubrication of rolling contact parts.
  • Examples of materials that can be used for the hub bearing of the present invention include bearing steel, carburized steel, and carbon steel for machine structure. Among these, it is preferable to use carbon steel for mechanical structure such as S53C which has good forgeability and is inexpensive.
  • carbon steel for mechanical structure such as S53C which has good forgeability and is inexpensive.
  • the grease composition is enclosed in the internal space including the rolling contact portion, poor lubrication can be suppressed by churnability while reducing torque, and the carbon steel for machine structure is used as a constituent material. However, sufficient durability can be expected.
  • a grease was prepared with a base oil and a first thickener (aromatic diamine).
  • Isocyanate (4,4′-diphenylmethane diisocyanate, MDI) was mixed in half of the base oil shown in Table 1, and amine (aniline) was mixed in the remaining half of the mixture in a beaker and heated to 100 ° C.
  • the amine mixed oil was put into a beaker containing MDI mixed oil. Thereafter, the contents in the beaker were allowed to react immediately after stirring, and after stirring for a while, they were left in a constant temperature bath at 100 ° C. for 3 hours.
  • the grease was smoothed by a three roll mill. Here, the following viscosity measurement was performed on this grease (grease before adding the second thickener).
  • the second thickener shown in Table 1 is added to this grease at a predetermined ratio, allowed to stand at a temperature 10 ° C. higher than the melting point, melted, stirred uniformly, and finally (A grease after the addition of the second thickener).
  • the 1st thickener and the 2nd thickener were each mix
  • n1 is the viscosity change index obtained from the viscosity measurement of the grease before adding the second thickener and the formula (1)
  • n2 is the grease after adding the second thickener.
  • Viscosity change index (same as index n in Table 1) obtained from viscosity measurement of (final grease) and formula (1).
  • ⁇ Viscosity measurement> The measurement was performed using a rheometer (HAAKE RheoWin MARS1 manufactured by Thermo Fisher Scientific) and a cone plate. The tip angle of the cone is 178 °. Place the sample on the plate and set the cone on it. The protruding sample was scraped with a spatula. Set to 40 ° C. and hold for 5 minutes when the instrument temperature reading reaches 40 ° C. As preliminary stirring, the speed was increased in 15 seconds until the shear rate reached 5000 sec ⁇ 1 . Thereafter, shearing was continued for 10 min at 3000 sec ⁇ 1 , and the change in viscosity during that time was measured. For each example and comparative example, approximate expression (1) was derived from the strain-shear viscosity plot.
  • ⁇ Torque measurement test> Measurements were made using a saddle type torque tester.
  • the test bearing is fixed to the spindle so that it is placed vertically, the rotation speed is 600 min ⁇ 1 , the room temperature (25 ° C.) atmosphere, the outer ring is loaded with an axial load of 20 N and restrained by the load cell, and the rotation generated by the bearing as the inner ring rotation Torque was calculated.
  • the test bearing was a deep groove ball bearing (6204), and a crown type cage formed of nylon 66 containing 30% by volume of glass fiber was used.
  • the grease was sealed so as to be 38% of the space volume, and a shield plate was attached so that the grease did not scatter.
  • the average value for 20 to 30 minutes during operation for 30 minutes was defined as the torque value (mNm).
  • the slope of the grease added with the second thickener is larger than the slope of the grease of the first thickener alone in the slope of the strain-shear viscosity plot (index of the formula (1)).
  • the difference in the magnitude of the slope is small (index ratio n2 / n1 ⁇ 2)
  • the decrease in viscosity due to the shearing of the grease added with the first and second thickeners is small, so the viscosity also decreases in the bearing. Without a decrease in torque.
  • the difference is too large (n2 / n1> 4)
  • the grease composition of the present invention can reduce the torque and reduce the torque reliably when subjected to shearing, and the behavior is churning to suppress poor lubrication. It can be suitably used as a low torque grease sealed in a rolling bearing for a machine, a rolling bearing for a machine tool, or the like.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Lubricants (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne une composition de graisse lubrifiante; lors de l'application d'un cisaillement, ladite composition de graisse lubrifiante présente de façon sûre une diminution de sa viscosité de sorte que le couple peut être réduit et, en même temps, montre des comportements de barattage, ce qui permet d'éliminer une insuffisance de lubrification; l'invention concernant également un palier à roulement et un roulement de moyeu contenant chacun la composition de graisse lubrifiante. Un palier à roulement (1) contient une composition de graisse lubrifiante enfermée autour d'un élément de roulement (4), la composition de graisse lubrifiante (7) comprenant une huile de base et des agents épaississants; l'huile de base comprend au moins un élément choisi parmi une huile minérale et une huile synthétique; les agents épaississants consistent en un premier agent épaississant qui est un composé diurée aromatique et un second agent épaississant qui est un autre composé; la teneur totale des premier et second agents épaississants est de 5 à 30 % en masse par rapport à la totalité de la composition de graisse lubrifiante; et la composition de graisse lubrifiante présente une valeur de pénétration non travaillée de 170 à 400 et son indice de changement de viscosité, dans une équation approximative d'une courbe de viscosité contrainte par rapport au cisaillement déterminée par viscosimétrie, satisfait une équation relative définie.
PCT/JP2018/011255 2017-03-30 2018-03-22 Composition de graisse lubrifiante, palier à roulement et roulement de moyeu Ceased WO2018180826A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-068763 2017-03-30
JP2017068763A JP2018168332A (ja) 2017-03-30 2017-03-30 グリース組成物、転がり軸受、およびハブベアリング

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WO2018180826A1 true WO2018180826A1 (fr) 2018-10-04

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6687096B1 (ja) 2018-12-11 2020-04-22 株式会社明電舎 試験システムの軸トルク制御器及びフィードバック制御器の設計方法、並びにこの設計方法に基づいて設計される軸トルク制御器
WO2025089387A1 (fr) * 2023-10-27 2025-05-01 株式会社ニッペコ Composition lubrifiante

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003105366A (ja) * 2001-09-27 2003-04-09 Ntn Corp グリース組成物およびグリース封入軸受
JP2012057134A (ja) * 2010-09-13 2012-03-22 Ntn Corp グリース組成物および転がり軸受
JP2013181156A (ja) * 2012-03-05 2013-09-12 Jx Nippon Oil & Energy Corp グリース組成物
WO2015156393A1 (fr) * 2014-04-11 2015-10-15 Ｊｘ日鉱日石エネルギー株式会社 Composition de lubrifiant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003105366A (ja) * 2001-09-27 2003-04-09 Ntn Corp グリース組成物およびグリース封入軸受
JP2012057134A (ja) * 2010-09-13 2012-03-22 Ntn Corp グリース組成物および転がり軸受
JP2013181156A (ja) * 2012-03-05 2013-09-12 Jx Nippon Oil & Energy Corp グリース組成物
WO2013133149A1 (fr) * 2012-03-05 2013-09-12 Ｊｘ日鉱日石エネルギー株式会社 Composition de graisse
WO2015156393A1 (fr) * 2014-04-11 2015-10-15 Ｊｘ日鉱日石エネルギー株式会社 Composition de lubrifiant

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