WO2012124815A1 - グリース組成物 - Google Patents
グリース組成物 Download PDFInfo
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- WO2012124815A1 WO2012124815A1 PCT/JP2012/056988 JP2012056988W WO2012124815A1 WO 2012124815 A1 WO2012124815 A1 WO 2012124815A1 JP 2012056988 W JP2012056988 W JP 2012056988W WO 2012124815 A1 WO2012124815 A1 WO 2012124815A1
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- grease composition
- bearing
- grease
- additive
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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
- 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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- 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
- 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
- C10M105/18—Ethers, e.g. epoxides
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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
- 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
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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
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium containing a sulfur-to-oxygen bond
- C10M135/10—Sulfonic acids or derivatives thereof
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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
- 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
- C10M137/10—Thio derivatives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
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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
- 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
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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
- 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
- C10M169/06—Mixtures of thickeners and additives
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6633—Grease properties or compositions, e.g. rheological properties
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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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—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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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/0406—Ethers; Acetals; Ortho-esters; Ortho-carbonates used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/16—Naphthenic acids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—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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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
- C10M2215/1026—Ureas; Semicarbazides; Allophanates used as thickening material
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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
- 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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- 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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/02—Groups 1 or 11
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
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- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
Definitions
- the present invention relates to a grease composition used for rolling bearings for automobile electrical equipment or automobile accessories.
- lithium soap grease and diurea grease that are inexpensive mineral oil, lithium soap grease and diurea grease that are based on synthetic oil, and the like are used.
- Synthetic oil diurea grease is often used as a grease used in rolling bearings for automobile electrical equipment and auxiliary equipment, particularly from the viewpoint of durability at high temperatures.
- a base oil containing an ether-based synthetic oil in an amount exceeding 50% by mass is represented by the following general formula: R 2 —NHCONH—R 1 —NHCONH—R 3 (In the formula, R 1 represents a divalent aromatic hydrocarbon group having 6 to 15 carbon atoms, R 2 and R 3 are the same or different groups, and are a cyclohexyl group or a cyclohexyl derivative group having 7 to 12 carbon atoms.
- R 1 NHCONHR 2 NHCONHR 3 (In the formula, R 1 and R 3 have an octadecyl group as an essential component, and further include one or both of an octyl group and a dodecyl group, and R 2 is a divalent group having 6 to 15 carbon atoms.
- a thickener there has been proposed a urea grease characterized by blending 3 to 15% by weight in a lubricating oil as a base oil.
- a urea grease using cyclohexylamine or alkylamine as a monoamine is not preferable from the viewpoint of high temperature durability as compared with a urea grease using an aromatic amine as a monoamine.
- Patent Document 5 It has been proposed to add an azo compound that absorbs hydrogen as a grease to be enclosed in a tribological metal material, various members, or a bearing used in a portion where water easily enters.
- Grease that does not cause separation due to hydrogen embrittlement even when water is infiltrated, and has fluorinated polymer oil added to the base oil, polytetrafluoroethylene added to the thickener, and a conductive material for long-life rolling bearings
- Patent Document 6 A composition has been proposed (for example, Patent Document 6).
- none of them is an action after hydrogen is generated, that is, a means for preventing hydrogen from entering the metal and is not a means for dealing with hydrogen embrittlement.
- the problem to be solved by the present invention is to provide a grease composition that is sealed in a rolling bearing for automobile electrical equipment or auxiliary equipment that has a long bearing lubrication life even under a high temperature environment and has excellent hydrogen embrittlement resistance and detachability. is there.
- Another subject of this invention is providing the rolling bearing which enclosed the said grease composition.
- the present inventors have improved this by selecting appropriate base oils, thickeners, and additives for the problems of bearing lubrication life and hydrogen embrittlement peelability in the high temperature environment. That is, the following grease composition is provided by the present invention.
- a base oil alkyldiphenyl ether oil is an essential component
- a thickener a diurea compound represented by the following formula (1), and as a peel-resistant additive, an organic sulfonate rust inhibitor and a load-resistant additive
- a grease composition for a rolling bearing for automobile electrical equipment or automobile auxiliary equipment comprising:
- R 2 represents a diphenylmethane group.
- R 1 and R 3 may be the same or different, and represent an aromatic hydrocarbon group having 6 to 12 carbon atoms.
- [R 4 -SO 3 ] nM ⁇ ⁇ ⁇ Formula (2) (Wherein R 4 represents an alkyl group, an alkenyl group, an alkyl naphthyl group, a dialkyl naphthyl group, an alkylphenyl group or a petroleum high-boiling fraction residue.
- the alkyl or alkenyl is linear or branched and has a carbon number.
- M represents an alkali metal, alkaline earth metal, zinc, or ammonium ion, and n represents the valence of M.
- M represents an alkali metal, alkaline earth metal, zinc, or ammonium ion, and n represents the valence of M.
- 3. The grease composition according to 1 or 2 above, wherein the organic sulfonate rust inhibitor is at least one selected from the group consisting of zinc salts and calcium salts. 4). 4.
- Grease composition 5. 5.
- the grease composition of the present invention has a long bearing lubrication life even under a high temperature environment, and excellent in resistance to hydrogen embrittlement and peeling.
- thickener As the thickener, a diurea compound represented by the following formula (1) is used:
- R 2 represents a diphenylmethane group.
- R 1 and R 3 may be the same or different and each represents an aromatic hydrocarbon group having 6 to 12 carbon atoms. Specific examples of R 1 and R 3 include aniline, benzylamine, toluidine, chloroaniline and the like. Of these, toluidine is preferred.
- the thickener can be obtained, for example, by reacting monoamine with diisocyanate at 10 to 150 ° C., but the reaction method is not particularly limited and can be carried out by a known method.
- a volatile solvent may be used, but when a base oil is used as a solvent, it can be blended as it is in the composition of the present invention.
- the diisocyanate that can be used include diphenylmethane-4,4′-diisocyanate.
- the amount of the thickener in the composition of the present invention is preferably 10 to 30% by mass and more preferably 15 to 25% by mass from the viewpoint of leakage resistance.
- non-metallic thickeners such as Li and Na
- non-fluorescent thickeners such as polytetrafluoroethylene are used.
- soaps and the like can be used, metal soaps, benton, and silica gel do not satisfy heat resistance, that is, bearing lubrication life at high temperatures.
- Fluorine-based thickeners are very expensive, although they are satisfactory in heat resistance, and lack versatility.
- the base oil contains an alkyl diphenyl ether oil that is excellent in heat resistance at high temperatures as an essential component.
- the alkyl group may be branched or linear, but is preferably linear.
- the alkyl group preferably has 10 to 20 carbon atoms, more preferably 12 to 14 carbon atoms.
- Alkyl diphenyl ether oil can be used alone or in combination of two or more. When the alkyl diphenyl ether oil is used in combination with another base oil, the type of the base oil is not particularly limited.
- ester-based synthetic oils typified by diesters and polyol esters, poly- ⁇ -olefins, synthetic hydrocarbon oils typified by polybutene, silicone-based synthetic oils, fluorine-based synthetic oils, and the like can be used.
- alkyl diphenyl ether oil and other base oil are used in combination, the content of alkyl diphenyl ether oil in the base oil is not particularly limited, but from the viewpoint of heat resistance, preferably 50% by mass based on the total mass of the base oil It is preferable to contain the above.
- the kinematic viscosity of the base oil at 40 ° C. is not particularly limited, but is preferably 30 to 300 mm 2 / s.
- the kinematic viscosity of the base oil at 40 ° C. is higher than 300 mm 2 / s, the low temperature fluidity cannot be satisfied.
- the kinematic viscosity of the base oil at 40 ° C. is lower than 30 mm 2 / s, it evaporates and the heat resistance is not preferable.
- the grease composition of the present invention contains an organic sulfonate-based rust inhibitor and a load-bearing additive as essential components as a peeling resistance additive. By using these in combination, the peeling life can be improved even under severe lubricating conditions.
- a compound represented by the following formula (2) can be preferably used: [R 4 -SO 3 ] nM ⁇ ⁇ ⁇ Formula (2)
- R 4 represents an alkyl group, an alkenyl group, an alkylnaphthyl group, a dialkylnaphthyl group, an alkylphenyl group, or a petroleum high-boiling fraction residue.
- the alkyl or alkenyl is linear or branched and has 2 to 22 carbon atoms.
- R 4 is preferably a dialkylnaphthyl group in which the alkyl group preferably has 6 to 18 carbon atoms, more preferably 8 to 12 carbon atoms, and particularly preferably 9 carbon atoms.
- M represents an alkali metal, alkaline earth metal, zinc, or ammonium ion. Alkaline earth metals and zinc are preferred. Calcium is preferred as the alkaline earth metal.
- n represents the valence of M.
- the organic sulfonate rust inhibitor is preferably at least one selected from the group consisting of zinc salts and calcium salts.
- the organic sulfonate rust inhibitor is particularly preferably dinonyl naphthalene sulfonate zinc salt and / or dinonyl naphthalene sulfonate calcium salt.
- the amount of the organic sulfonate rust inhibitor in the grease composition of the present invention is preferably 0.1 to 10% by mass, and more preferably 0.2 to 5% by mass.
- Load-bearing additives include: thiocarbamates such as zinc dialkyldithiocarbamate (ZnDTP); thiophosphates such as zinc dialkyldithiophosphate; naphthenates such as zinc naphthenate and calcium naphthenate; zinc alkylcarboxylates Carboxylic acid salts such as trioctyl phosphate, triphenyl phosphorothionate, and the like.
- the load bearing additive is at least one selected from the group consisting of thiocarbamate, thiophosphate, naphthenate, carboxylate, and organic phosphate, and thiocarbamate and thiophosphate More preferably, it is at least one selected from the group consisting of salts.
- the load bearing additive can be an alkali metal salt, alkaline earth metal salt, zinc salt, or ammonium salt. Zinc salts are preferred.
- zinc thiocarbamate and zinc thiophosphate are particularly preferable, and zinc dialkyldithiocarbamate and zinc dialkyldithiophosphate are most preferable.
- the content of the load bearing additive in the composition of the present invention is preferably from 0.1 to 10% by mass, more preferably from 0.2 to 5% by mass.
- the amount of the anti-peeling additive in the composition of the present invention is preferably 0.1 to 10% by mass, and more preferably 0.2 to 8% by mass.
- the grease composition of the present invention can also contain any additive as required.
- examples include amine-based and phenol-based antioxidants.
- amine-based and phenol-based antioxidants which are primary antioxidants are preferable. In order to use in a wide temperature range, it is more preferable to use them together than to use them alone.
- the addition amount of the amine-based antioxidant is preferably 0.1 to 5% by mass, and more preferably 0.5 to 4% by mass, based on the total mass of the grease composition of the present invention.
- the addition amount of the phenolic antioxidant is preferably 0.1 to 5% by mass, and more preferably 0.5 to 4% by mass.
- the total amount added is preferably 0.5 to 6% by mass, and more preferably 1 to 5% by mass.
- additives include amine-based and phenol-based antioxidants such as quinoline-based; inorganic passivating agents such as sodium nitrite; amine-based, carboxylic acid-based organic sulfonic acid-based compounds.
- Rust inhibitors other than rust inhibitors; Metal corrosion inhibitors such as benzotriazole; Oily agents such as fatty acids, fatty acid esters, and phosphate esters; Phosphorous, sulfur, and organometallic antiwear agents other than the above load-resistant additives And solid pressure agents such as metal oxide salts and molybdenum disulfide.
- the amount of these optional additives is usually 0.5 to 5% by mass based on the total mass of the grease composition of the present invention.
- the degree of blending of the composition of the present invention can be adjusted as appropriate, but is preferably 200 to 400, more preferably 250 to 350.
- rolling bearings for automobile electrical equipment or automobile auxiliary equipment that are applications of the grease composition of the present invention include rolling bearings such as alternators, electromagnetic clutches for car air conditioners, intermediate pulleys, idler pulleys, and tension pulleys.
- test grease was obtained after reacting 1 mol of diphenylmethane diisocyanate and monoamine (cyclohexylamine, octylamine, p-toluidine) in the following base oil to raise the temperature and cooling.
- the following additives and base oil were added to the base grease, and after three roll mills, the grease compositions of Examples 1 to 6 and Comparative Examples 1 to 8 were obtained so that the penetration was 350.
- Anti-peeling additive ⁇ Rust inhibitor> ⁇ Zn sulfonate, dinonylnaphthalene sulfonic acid Zn salt ⁇ Ca sulfonate, dinonyl naphthalene sulfonic acid Ca salt ⁇ Load bearing additive> ⁇ ZnDTP ⁇ Zinc dialkyldithiophosphate ⁇ ZnDTC ⁇ Zinc dialkyldithiocarbamate ⁇ Antioxidant> ⁇ Amine-based antioxidants and alkyldiphenylamines ⁇ Phenolic antioxidants and hindered phenols
- Bearing lubrication life test (according to ASTM D3336) This test is an inner ring rotation test for evaluating the bearing lubrication life at high temperatures. The rolling bearing was operated under the following conditions, and the time until the motor generated an overcurrent (4 amps) or the bearing temperature increased by + 15 ° C. was defined as the lubrication life. The results are shown in Tables 1 and 2.
- Bearing type 6204 Metal seal Test temperature: 180 °C Rotation speed: 10000rpm
- Test load Axial load 66.7N Radial load 66.7N
- Rolling 4 ball test test method outline Prepare three steel balls for bearings with a diameter of 15 mm, place them in a container with an inner diameter of 40 mm and a height of 14 mm, and fill with about 20 g of test grease.
- One ⁇ 5 / 8 inch steel ball for bearing is brought into contact with these three steel balls.
- hydrogen gas is introduced into the test section.
- the lower three steel balls revolve while rotating. This is continuously rotated until peeling occurs on the steel spherical surface.
- the service life is defined as the number of times the upper steel ball contacts the lower steel ball when peeling occurs. Note that peeling occurs between the spheres having the highest surface pressure.
- the above tests were performed using the grease compositions of Examples and Comparative Examples as test greases. The results are shown in Tables 1 and 2.
- Test conditions Test steel balls: ⁇ 5 / 8in bearing steel balls (rotating balls), ⁇ 15mm bearing steel balls (driven balls)
- Test load 100kgf (4.1GPa) Rotation speed: 1500rpm
- Hydrogen introduction amount 15mL / min
- Hydrogen purity 99.99%
- the grease compositions of Comparative Examples 1 to 8 that do not contain any of them fail either the bearing lubrication life or the rolling four-ball test.
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- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
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- Rolling Contact Bearings (AREA)
Abstract
Description
また、プーリの小径化、伝達トルクの増大、ベルト耐久性向上のため、1980年代半ばころから従来のVベルトからポリVベルトが採用されるようになったが、その頃から転がり軸受の転走面に、白色組織変化を伴った特異な早期異常はく離が発生し問題となっている。
このように電装・補機部品の軸受には、高温耐久性と、耐水素脆性はく離性の両性能を有したグリースが求められるようになった。
特許文献1では、50質量%を超える量のエーテル系合成油を含む基油に、必須成分として下記一般式:
R2-NHCONH-R1-NHCONH-R3
(式中、R1は炭素数6~15の2価の芳香族炭化水素基を示し、R2およびR3は同一若しくは異なる基であって、シクロヘキシル基、炭素数7~12のシクロヘキシル誘導体基または炭素数8~20のアルキル基を示す。)で表わされるジウレア化合物の少なくとも1種からなり、かつシクロヘキシル基またはその誘導体基の含有率[{(シクロヘキシル基またはその誘導体基の数)/(シクロヘキシル基またはその誘導体基の数+アルキル基の数)}×100]が50~100%であるゲル化剤を含有させたことを特徴とするグリースが提案されている。
また特許文献2では、次の一般式:
R1 NHCONHR2 NHCONHR3
(式中のR1 およびR3 はオクタデシル基を必須成分とし、さらにオクチル基、ドデシル基のうちのいずれか1種類、又は両方をも含む基、R2 は炭素数6~15の2価の炭化水素基を示し、かつ、R1 およびR3 の基に占めるオクタデシル基、オクチル基、ドデシル基のうち、オクタデシル基の割合がモル比率で20~80モル%である)で表されるウレア化合物を増ちょう剤として、これを基油である潤滑油中に3~15重量%配合したことを特徴とするウレアグリースが提案されている。
しかし、シクロヘキシルアミンやアルキルアミンをモノアミンとしたウレアグリースは、芳香族アミンをモノアミンとしたウレアグリースと比較して、高温耐久性の観点から好ましいものではない。
しかし、いずれも水素が発生した後の作用、つまり、金属内部への水素侵入を防止する手段ではなく、水素脆性に対応できる手段ではない。
本発明の別の課題は、前記グリース組成物を封入した転がり軸受を提供することである。
1.基油として、アルキルジフェニルエーテル油を必須成分とし、
増ちょう剤として、下記式(1)で示されるジウレア化合物、及び
耐はく離添加剤として、有機スルホン酸塩系錆止め剤および耐荷重添加剤、
を含有することを特徴とする自動車電装用又は自動車補機用転がり軸受用グリース組成物。
2.有機スルホン酸塩系錆止め剤が下記式(2)で示される前記1項記載の転がり軸受用グリース組成物。
[R4-SO3]nM ・・・式(2)
(式中、R4はアルキル基、アルケニル基、アルキルナフチル基、ジアルキルナフチル基、アルキルフェニル基又は石油高沸点留分残基を表す。前記アルキルまたはアルケニルは、直鎖または分岐であり、炭素数は2~22である。Mはアルカリ金属、アルカリ土類金属、亜鉛、またはアンモニウムイオンを表す。nはMの価数を表す。)
3.有機スルホン酸塩系錆止め剤が、亜鉛塩及びカルシウム塩からなる群から選ばれる少なくとも一種である、前記1又は2項記載のグリース組成物。
4.耐荷重添加剤が、チオカルバミン酸塩、チオリン酸塩、ナフテン酸塩、カルボン酸塩、および有機リン酸エステルからなる群から選ばれる少なくとも1種である前記1~3のいずれか1項記載のグリース組成物。
5.耐荷重添加剤が、チオカルバミン酸塩及びチオリン酸塩からなる群から選ばれる少なくとも一種である、前記1~4のいずれか1項記載のグリース組成物。
6.さらに、酸化防止剤として、アミン系酸化防止剤およびフェノール系酸化防止剤を含有する前記1~5のいずれか1項記載のグリース組成物。
7.前記1~6のいずれか1項記載のグリース組成物を封入した自動車電装用又は補機用転がり軸受。
増ちょう剤としては、下記式(1)で表されるジウレア化合物を用いる:
式(1)の増ちょう剤を基油に含ませることにより、高温下でも耐熱性に優れるグリースが得られる。
前記増ちょう剤は、例えばモノアミンをジイソシアネートと10~150℃で反応させることにより得られるが、その反応方法に特に制限は無く、公知の方法により実施することができる。この際に揮発性の溶媒を使用してもよいが、基油を溶媒として使用するとそのまま本発明の組成物に配合することができる。具体的に使用できるジイソシアネートとしては、例えば、ジフェニルメタン-4,4′-ジイソシアネートが挙げられる。
本発明の組成物中の前記増ちょう剤の量は、耐漏洩性の観点から、10~30質量%であるのが好ましく、15~25質量%であるのがより好ましい。
なお、グリースに使用される増ちょう剤としては、一般的に、LiやNa等を含む金属石けん類、ベントン、シリカゲル、ジウレア化合物、ポリテトラフルオロエチレンに代表されるフッ素系増ちょう剤等の非石けん類等も使用できるとされているが、金属石けん類、ベントン、シリカゲルは、耐熱性、すなわち高温下での軸受潤滑寿命を満足するものではない。またフッ素系増ちょう剤は、耐熱性は満足するものの非常に高価であり、汎用性に欠ける。
基油は、高温下で耐熱性に優れるアルキルジフェニルエーテル油を必須成分とする。アルキル基は、分岐でも直鎖でもよいが、直鎖が好ましい。アルキル基の炭素数は10~20が好ましく、12~14が好ましい。アルキルジフェニルエーテル油は、一種単独を用いることもできるし、二種以上を併用することもできる。
アルキルジフェニルエーテル油と他の基油とを併用する場合、その基油の種類は特に限定されない。例えば、ジエステル、ポリオールエステルに代表されるエステル系合成油、ポリαオレフィン、ポリブデンに代表される合成炭化水素油、シリコーン系合成油、フッ素系合成油等を使用することができる。
アルキルジフェニルエーテル油と他の基油とを併用する場合、基油中のアルキルジフェニルエーテル油の含有量は特に限定しないが、耐熱性の観点から、好ましくは基油の全質量を基準にして50質量%以上を含有させることが好ましい。
40℃における基油の動粘度は特に限定しないが、30~300mm2/sであるのが好ましい。より好ましくは50~200mm2/s、さらに好ましくは50~150mm2/sである。
40℃における基油の動粘度が300mm2/sより高いと、低温流動性が満足できなくなる。40℃における基油の動粘度が30mm2/sより低いと、蒸発してしまい、耐熱性が好ましくない。
本発明のグリース組成物は、耐はく離添加剤として、有機スルホン酸塩系錆止め剤および耐荷重添加剤を必須成分として含有する。これらを併用することにより、厳しい潤滑条件下でもはく離寿命の向上が可能となる。
有機スルホン酸塩系錆止め剤としては、下記式(2)で示される化合物を好適に使用することができる:
[R4-SO3]nM ・・・式(2)
式中、R4はアルキル基、アルケニル基、アルキルナフチル基、ジアルキルナフチル基、アルキルフェニル基又は石油高沸点留分残基を表す。前記アルキルまたはアルケニルは、直鎖または分岐であり、炭素数は2~22である。R4としては、アルキル基の炭素数が好ましくは6~18、より好ましくは8~12、特に好ましくは9であるジアルキルナフチル基が好ましい。
Mはアルカリ金属、アルカリ土類金属、亜鉛、またはアンモニウムイオンを表す。アルカリ土類金属及び亜鉛が好ましい。アルカリ土類金属としてはカルシウムが好ましい。
nはMの価数を表す。
本発明のグリース組成物中の有機スルホン酸塩系錆止め剤の量は、0.1~10質量%であるのが好ましく、0.2~5質量%であるのがより好ましい。
耐荷重添加剤が、チオカルバミン酸塩、チオリン酸塩、ナフテン酸塩、カルボン酸塩、および有機リン酸エステルからなる群から選ばれる少なくとも1種であるのが好ましく、チオカルバミン酸塩及びチオリン酸塩からなる群から選ばれる少なくとも一種であるのがより好ましい。
耐荷重添加剤は、アルカリ金属塩、アルカリ土類金属塩、亜鉛塩、またはアンモニウム塩であり得る。亜鉛塩が好ましい。
耐荷重添加剤としては、チオカルバミン酸亜鉛塩、チオリン酸亜鉛塩が特に好ましく、ジアルキルジチオカルバミン酸亜鉛塩、ジアルキルジチオリン酸亜鉛塩が最も好ましい。
本発明の組成物中の耐荷重添加剤の含有量は、0.1~10質量%であるのが好ましく、0.2~5質量%であるのがより好ましい。
本発明の組成物中の耐はく離添加剤の量は、0.1~10質量%であるのが好ましく、0.2~8質量%であるのがより好ましい。
またその他の添加剤の例としては、アミン系、フェノール系以外の酸化防止剤、例えばキノリン系等;亜硝酸ソーダなどの無機不働態化剤;アミン系、カルボン酸塩等の前記有機スルホン酸系錆止め剤以外の錆止め剤;ベンゾトリアゾール等の金属腐食防止剤;脂肪酸、脂肪酸エステル、リン酸エステル等の油性剤、前記耐荷重添加剤以外のリン系、硫黄系、有機金属系等の耐摩耗剤や極圧剤;酸化金属塩、二硫化モリブデン等の固体潤滑剤などが挙げられる。これら任意の添加剤の量は、本発明のグリース組成物の全質量を基準として、通常0.5~5質量%である。
本発明グリース組成物の用途である自動車電装又は自動車補機用転がり軸受としては、オルタネータ、カーエアコン用電磁クラッチ、中間プーリ、アイドラプーリ、テンションプーリ等の転がり軸受が挙げられる。
試験グリースの調整
下記基油中で、ジフェニルメタンジイソシアネート1モル、モノアミン(シクロヘキシルアミン、オクチルアミン、p-トルイジン)を反応させて昇温、冷却後、ベースグリースを得た。ベースグリースに下記添加剤と基油を加え、3本ロールミル後、混和ちょう度が350になるように実施例1~6及び比較例1~8のグリース組成物を得た。
○アルキルジフェニルエーテル油
・C12~C14アルキルジフェニルエーテル油:40℃の動粘度=97mm2/s
○ポリオールエステル油
・ジペンタエリスリトールエステル油:40℃の動粘度=76.9mm2/s
○合成炭化水素油
・ポリα-オレフィン油:40℃の動粘度=68.0mm2/s
<錆止め剤>
○Znスルホネート
・ジノニルナフタレンスルホン酸Zn塩
○Caスルホネート
・ジノニルナフタレンスルホン酸Ca塩
<耐荷重添加剤>
○ZnDTP
・ジアルキルジチオリン酸Zn
○ZnDTC
・ジアルキルジチオカルバミン酸Zn
<酸化防止剤>
○アミン系酸化防止剤
・アルキルジフェニルアミン
○フェノール系酸化防止剤
・ヒンダードフェノール
(1)軸受潤滑寿命試験(ASTM D3336準拠)
本試験は、高温下での軸受潤滑寿命を評価する内輪回転の試験である。下記の条件で転がり軸受を運転し、モータが過電流(4アンペア)を生じるまで、または軸受温度が+15℃上昇するまでの時間を潤滑寿命とした。結果を表1及び表2に示す。
軸受形式:6204金属シール
試験温度:180℃
回転数 :10000rpm
試験荷重:アキシャル荷重66.7N ラジアル荷重66.7N
試験方法の概略
φ15mmの軸受用鋼球を3個用意し、内径40mm、高さ14mmの容器内に配置し、試験グリースを約20gを充填する。この3個の鋼球の上にφ5/8インチの軸受用鋼球1個を接触させる。
荷重を掛け4時間回転させて慣らし運転を行なった後、試験部に水素ガスを導入する。所定の回転数で回転させると、下側の3個の鋼球は自転しながら公転する。これを鋼球面にはく離が生じるまで連続回転させる。寿命は、はく離が生じた時点の上鋼球の下鋼球に対する接触回数とする。なお、はく離は、最も面圧の高い球-球間に生じる。
試験グリースとして、実施例及び比較例のグリース組成物を用い、上記試験を行った。
結果を表1及び表2に示す。
試験鋼球: φ5/8in軸受用鋼球(回転球)、φ15mm軸受用鋼球(従動球)
試験荷重: 100kgf(4.1GPa)
回転速度: 1500rpm
水素導入量: 15mL/分
水素純度: 99.99%
試験部気圧: 0.96気圧(減圧排気のため)
試験繰り返し数: 5 (平均寿命:n=5の平均)
軸受潤滑寿命試験 400時間以上・・・○(合格)
400時間未満・・・×(不合格)
転がり4球試験試験 20×106回以上・・・○(合格)
20×106回未満・・・×(不合格)
軸受潤滑寿命試験、転がり4球試験 いずれも合格・・・○(合格)
軸受潤滑寿命試験、転がり4球試験 どちらか1つが不合格・・・×(不合格)
一方、いずれかが含まれていない比較例1~8のグリース組成物は、軸受潤滑寿命および転がり4球試験のいずれかが不合格である。
Claims (7)
- 有機スルホン酸塩系錆止め剤が下記式(2)で示される請求項1記載の転がり軸受用グリース組成物。
[R4-SO3]nM ・・・式(2)
(式中、R4はアルキル基、アルケニル基、アルキルナフチル基、ジアルキルナフチル基、アルキルフェニル基又は石油高沸点留分残基を表す。前記アルキルまたはアルケニルは、直鎖または分岐であり、炭素数は2~22である。Mはアルカリ金属、アルカリ土類金属、亜鉛、またはアンモニウムイオンを表す。nはMの価数を表す。) - 有機スルホン酸塩系錆止め剤が、亜鉛塩及びカルシウム塩からなる群から選ばれる少なくとも一種である、請求項1又は2記載のグリース組成物。
- 耐荷重添加剤が、チオカルバミン酸塩、チオリン酸塩、ナフテン酸塩、カルボン酸塩、および有機リン酸エステルからなる群から選ばれる少なくとも1種である請求項1~3のいずれか1項記載のグリース組成物。
- 耐荷重添加剤が、チオカルバミン酸塩及びチオリン酸塩からなる群から選ばれる少なくとも一種である、請求項1~4のいずれか1項記載のグリース組成物。
- さらに、酸化防止剤として、アミン系酸化防止剤およびフェノール系酸化防止剤を含有する請求項1~5のいずれか1項記載のグリース組成物。
- 請求項1~6のいずれか1項記載のグリース組成物を封入した自動車電装用又は補機用転がり軸受。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137022926A KR20140017571A (ko) | 2011-03-17 | 2012-03-19 | 그리스 조성물 |
CN2012800129327A CN103429721A (zh) | 2011-03-17 | 2012-03-19 | 润滑脂组合物 |
EP12757356.6A EP2687584B1 (en) | 2011-03-17 | 2012-03-19 | Grease composition |
US14/004,597 US20130345101A1 (en) | 2011-03-17 | 2012-03-19 | Grease composition |
Applications Claiming Priority (2)
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JP2011-059086 | 2011-03-17 | ||
JP2011059086A JP5774881B2 (ja) | 2011-03-17 | 2011-03-17 | グリース組成物 |
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WO2012124815A1 true WO2012124815A1 (ja) | 2012-09-20 |
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US (1) | US20130345101A1 (ja) |
EP (1) | EP2687584B1 (ja) |
JP (1) | JP5774881B2 (ja) |
KR (1) | KR20140017571A (ja) |
CN (1) | CN103429721A (ja) |
WO (1) | WO2012124815A1 (ja) |
Cited By (3)
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WO2014065399A1 (ja) * | 2012-10-26 | 2014-05-01 | 協同油脂株式会社 | グリース組成物 |
WO2018025981A1 (ja) * | 2016-08-04 | 2018-02-08 | 協同油脂株式会社 | グリース組成物 |
WO2022034883A1 (ja) * | 2020-08-12 | 2022-02-17 | 株式会社ジェイテクト | グリース組成物および転がり軸受 |
Families Citing this family (8)
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JP2009270058A (ja) * | 2008-05-09 | 2009-11-19 | Kyodo Yushi Co Ltd | 等速ジョイント用グリース組成物及び等速ジョイント |
WO2013031705A1 (ja) * | 2011-08-26 | 2013-03-07 | 日本精工株式会社 | グリース組成物及び転動装置 |
EP2921549B1 (en) * | 2012-11-16 | 2020-08-05 | Idemitsu Kosan Co., Ltd | Grease composition |
JP6292569B2 (ja) * | 2013-12-04 | 2018-03-14 | 協同油脂株式会社 | 等速ジョイント用グリース組成物及びそのグリース組成物を封入した等速ジョイント |
US10611765B2 (en) | 2014-11-06 | 2020-04-07 | Ohio State Innovation Foundation | Pyrrolopyrimidine derivatives as Mps1/TTK kinase inhibitors |
JP6744708B2 (ja) * | 2015-01-21 | 2020-08-19 | セイコーインスツル株式会社 | 転がり軸受用グリース、転がり軸受、転がり軸受装置及び情報記録再生装置 |
WO2016129148A1 (ja) * | 2015-02-09 | 2016-08-18 | 株式会社Moresco | 潤滑剤組成物及びその利用、並びに脂肪族エーテル化合物 |
JP7522594B2 (ja) * | 2020-07-06 | 2024-07-25 | 株式会社ジェイテクト | グリース組成物および転がり軸受 |
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- 2012-03-19 WO PCT/JP2012/056988 patent/WO2012124815A1/ja active Application Filing
- 2012-03-19 US US14/004,597 patent/US20130345101A1/en not_active Abandoned
- 2012-03-19 EP EP12757356.6A patent/EP2687584B1/en active Active
- 2012-03-19 KR KR1020137022926A patent/KR20140017571A/ko active Search and Examination
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JPH05263091A (ja) * | 1992-01-22 | 1993-10-12 | Ntn Corp | オルタネータ用グリース封入転がり軸受 |
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Cited By (8)
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WO2014065399A1 (ja) * | 2012-10-26 | 2014-05-01 | 協同油脂株式会社 | グリース組成物 |
JP2014084442A (ja) * | 2012-10-26 | 2014-05-12 | Kyodo Yushi Co Ltd | グリース組成物 |
US9719045B2 (en) | 2012-10-26 | 2017-08-01 | Kyodo Yushi Co., Ltd. | Grease composition |
WO2018025981A1 (ja) * | 2016-08-04 | 2018-02-08 | 協同油脂株式会社 | グリース組成物 |
JP2018021140A (ja) * | 2016-08-04 | 2018-02-08 | 協同油脂株式会社 | グリース組成物 |
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Also Published As
Publication number | Publication date |
---|---|
EP2687584B1 (en) | 2020-09-09 |
JP5774881B2 (ja) | 2015-09-09 |
CN103429721A (zh) | 2013-12-04 |
KR20140017571A (ko) | 2014-02-11 |
EP2687584A1 (en) | 2014-01-22 |
EP2687584A4 (en) | 2014-10-29 |
JP2012193298A (ja) | 2012-10-11 |
US20130345101A1 (en) | 2013-12-26 |
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