EP3178910B1 - Schmierfettzusammensetzung - Google Patents

Schmierfettzusammensetzung Download PDF

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Publication number
EP3178910B1
EP3178910B1 EP15829350.6A EP15829350A EP3178910B1 EP 3178910 B1 EP3178910 B1 EP 3178910B1 EP 15829350 A EP15829350 A EP 15829350A EP 3178910 B1 EP3178910 B1 EP 3178910B1
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Prior art keywords
oil
grease composition
carbon atoms
mass
grease
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EP15829350.6A
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English (en)
French (fr)
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EP3178910A4 (de
EP3178910A1 (de
Inventor
Kazumi Sakai
Kentaro Yamaguchi
Yukihiro Kawaji
Kiyomi Sakamoto
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Eneos Corp
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JX Nippon Oil and Energy Corp
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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
    • 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
    • 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
    • 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
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
    • 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
    • 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
    • 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
    • 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
    • C10M2207/1265—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 used as thickening agent
    • 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
    • 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
    • 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
    • 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
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • 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
    • C10M2223/041—Triaryl phosphates
    • 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
    • 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
    • C10M2223/049—Phosphite
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/10—Semi-solids; greasy

Definitions

  • the present invention relates to a grease composition having excellent lubricity.
  • Grease is typically used for sliding surfaces where moving contact surfaces make it difficult to keep a lubricant film adhered to the lubricated surfaces, for example, such as in sliding portions and rotors of mechanisms.
  • moving contact surfaces make it difficult to keep a lubricant film adhered to the lubricated surfaces, for example, such as in sliding portions and rotors of mechanisms.
  • a base oil In order to improve the lubricity of grease, it has been proposed to select a base oil, a thickener, and additives. For example, it is known to add a specific phosphite ester (PTL 1), or incorporate organic molybdenum, zinc dithiophosphate, a polysulfide, and a triglyceride (PTL 2).
  • PTL 1 phosphite ester
  • PTL 2 triglyceride
  • US 4 029 587 A discloses lubricants and functional fluids containing substituted sulfolanes as seal swelling agents.
  • WO 2006/023317 A1 discloses lubricant compositions containing a combination of conditioning agents for preserving the integrity of elastomeric materials, which include a swell agent such as a sulfolane.
  • the present invention has been made to provide a solution to the foregoing problem, and is intended to provide a grease composition of excellent lubricity containing a novel additive for grease.
  • the present inventors conducted intensive studies to develop a grease composition of excellent lubricity, and found, rather by chance, that a specific sulfolane derivative is effective as an additive for grease. It was confirmed that the sulfolane derivative has synergy with other additives under specific conditions.
  • the present invention is based on these findings, and includes the following.
  • the grease composition of the present invention has distinguishing effects including a low coefficient of friction, high load bearing characteristics, and excellent lubricity.
  • a lubricant base oil of the present invention may be any of a mineral oil, a synthetic oil, an animal and vegetable oil, or a mixture thereof, provided that it is a lubricant base oil for common lubricants.
  • the lubricant base oil has a kinetic viscosity at 100°C of preferably 1 to 200 mm 2 /s, more preferably 5 to 50 mm 2 /s.
  • the content of the lubricant base oil is preferably 50 mass% or more, more preferably 60 mass% or more with respect to the total amount of the grease composition.
  • the upper limit of the content is preferably 95 mass% or less, more preferably 85 mass% or less, accounting for the balance.
  • Mineral oil-type base oils for lubricant are generally prepared by distilling crude oil under atmospheric pressure, optionally further distilling the atmospheric residual oil under reduced pressure, refining the resulting distillate oil by various refining processes to obtain a lubricating oil fraction.
  • the fraction is used as a base oil, as it is, or a base oil is prepared by blending various additives to the fraction.
  • Examples of the above refining processes include hydrotreating, solvent extraction, solvent dewaxing, hydrodewaxing, sulfuric acid washing, and a clay treatment.
  • a mineral oil-type base oil for lubricant suitable for the present invention can be obtained by combining these processes in an appropriate order and submitting thereto.
  • a mixture of two or more refined oils having different properties obtained by processing different crude oils or different distillate oils in combination with different processes, or in different orders may also be used as a suitable base oil.
  • the mineral oil-type base oil for lubricant is preferably one with an aromatic content of 20% or less.
  • Examples of the synthetic oil-type base oil for lubricant include poly ⁇ -olefin (PAO), a low-molecular copolymer of ethylene and ⁇ -olefin, high-molecular polymers such as polybutene and polyisobutene, oxygen-containing synthetic oils such as ester oils and ether oils, silicone oils, fluorinated oils, and alkylnaphthalene. These may be used either alone or in combination.
  • PAO poly ⁇ -olefin
  • high-molecular polymers such as polybutene and polyisobutene
  • oxygen-containing synthetic oils such as ester oils and ether oils
  • silicone oils silicone oils
  • fluorinated oils fluorinated oils
  • alkylnaphthalene alkylnaphthalene
  • animal and vegetable oil-type base oils for lubricant include milkfat, beef tallow, lard (pig fat), mutton tallow, whale oil, salmon oil, bonito oil, herring oil, cod oil, soy oil, canola oil, sunflower oil, safflower oil, peanut oil, corn oil, cottonseed oil, rice bran oil, sesame oil, olive oil, linseed oil, castor oil, cacao butter, palm oil, coconut oil, hempseed oil, rice oil, and tea seed oil.
  • milkfat beef tallow, lard (pig fat), mutton tallow, whale oil, salmon oil, bonito oil, herring oil, cod oil, soy oil, canola oil, sunflower oil, safflower oil, peanut oil, corn oil, cottonseed oil, rice bran oil, sesame oil, olive oil, linseed oil, castor oil, cacao butter, palm oil, coconut oil, hempseed oil, rice oil, and tea seed oil.
  • the thickener used in the present invention may be, for example, a metal soap- or urea-based thickener commonly used for grease compositions, or an organic synthetic resin powder, an inorganic powder, a gelatinizer made from an amide compound, or a wax.
  • the metal soap-based thickener is a metal carboxylate (metal soap), and may be, for example, a sodium soap, a calcium soap, an aluminum soap, or a lithium soap, of which the lithium soap is preferred.
  • carboxylic acids that form the soap include fatty acids, and aliphatic divalent carboxylic acids.
  • the metal soap may be a so-called composite metal soap.
  • urea-based thickener examples include urea compounds such as diurea compounds, triurea compounds, tetraurea compounds, polyurea compounds (excluding diurea compounds, triurea compounds, and tetraurea compounds), urethane compounds such as urea-urethane compounds, and diurethane, and mixtures thereof.
  • urea compounds such as diurea compounds, triurea compounds, tetraurea compounds, polyurea compounds (excluding diurea compounds, triurea compounds, and tetraurea compounds), urethane compounds such as urea-urethane compounds, and diurethane, and mixtures thereof.
  • diurea compounds such as diurea compounds, triurea compounds, tetraurea compounds, polyurea compounds (excluding diurea compounds, triurea compounds, and tetraurea compounds)
  • urethane compounds such as urea-urethane compounds, and diurethane, and mixtures thereof.
  • Preferred are diurea compounds,
  • organic synthetic resin powder examples include fluororesin particles (particularly, polytetrafluoroethylene resin particles).
  • the inorganic powder examples include metal oxide such as silica, metal carbonates such as calcium carbonate, metal sulfates such as calcium sulfate, and nitrides such as h-BN (atmospheric-phase boron nitride) .
  • the inorganic powder also may be, for example, a mineral-derived metal oxide such as bentonite.
  • gelatinizer made from amide compounds include monoamides, bisamides, and triamides. Preferred are aliphatic monoamides, and aliphatic bisamides.
  • wax examples include petroleum waxes, synthetic waxes, and natural resin waxes.
  • the thickener content is preferably 3 to 45 mass%, more preferably 5 to 30 mass% with respect to the total amount of the grease composition.
  • the sulfolane derivative of the present invention is a compound represented by the following general formula (1).
  • R 1 represents a hydrocarbon group of 1 to 20 carbon atoms
  • R 2 and R 3 each represent hydrogen, or a hydrocarbon group of 1 to 20 carbon atoms.
  • the sulfolane derivative is preferably one in which R 1 in the general formula (1) is an alkyl group of 4 to 18 carbon atoms, more preferably one in which R 1 is an alkyl group of 6 to 16 carbon atoms, and R 2 and R 3 are each hydrogen or a hydrocarbon group of 1 to 8 carbon atoms. More preferably, R 2 and R 3 are both hydrogens.
  • the sulfolane compound is commercially available as a seal-swell agent, and may be produced by, for example, the method described in JP-A-2006-206580 .
  • the content of the sulfolane derivative is preferably 0.2 to 10 mass%, more preferably 0.5 to 5 mass% with respect to the total amount of the grease composition.
  • a second additive which is at least one compound selected from a diphenyl hydrogen phosphite and tricresyl phosphate, is added in addition to the lubricant base oil, the thickener, and the sulfolane derivative.
  • the content of the second additive is 0.1 to 10 mass%, preferably 0.2 to 5 mass% with respect to the total amount of the grease composition.
  • the content of the phosphorus element is preferably 0.01 to 1 mass%, more preferably 0.02 to 0.5 mass% with respect to the total amount of the grease composition.
  • the grease composition of the present invention may also contain known additives, other than the second additive.
  • additives include phenol- or amine-based antioxidants; anti-rusting agents such as carboxylates, and sulfonates; antiwear agents such as polyalkylene glycol, and glycerine; extreme-pressure agents such as chlorinated paraffins; oiliness improvers such as higher fatty acids, and synthetic esters; and solid lubricants such as graphite, and molybdenum disulfide. These may be added either alone or in a combination of two or more.
  • the grease composition of the present invention may be prepared by using a common grease preparation method, specifically by blending the thickener with the lubricant base oil to produce a base grease, and blending and mixing the additives to the base grease.
  • the grease composition of the present invention may be prepared by blending and mixing the lubricant base oil, the thickener, and the additives at once.
  • the grease composition of the present invention is semi-solid or solid at room temperature, and has a consistency of 000 to 6 in terms of a JIS K2220 consistency number.
  • the thickener shown in Table 1 was added to the lubricant base oil, and the additives were added to make the compositions shown in Table 1.
  • the mixture was stirred, and passed through a roller mill to obtain grease compositions of Examples, Reference Examples and Comparative Examples.
  • PAO poly ⁇ -olefin (kinetic viscosity at 40°C: 48 mm 2 /s).
  • Mineral oil 1 is a highly-refined mineral oil (kinetic viscosity at 40°C: 38 mm 2 /s) obtained through hydrocracking of a crude oil-derived component.
  • Standard oil 2 is a solvent-refining paraffinic mineral oil (kinetic viscosity at 40°C: 100 mm 2 /s).
  • “Urea” in “Thickener” is a urea-based thickener obtained through reaction of diphenylmethane-4,4'-diisocyanate (MDI) and monoamine which is a mixture of 2 mole parts of p-toluidine and 8 mole parts of cyclohexylamine.
  • MDI diphenylmethane-4,4'-diisocyanate
  • monoamine which is a mixture of 2 mole parts of p-toluidine and 8 mole parts of cyclohexylamine.
  • Li soap in “Thickener” is lithium stearate.
  • phosphite ester is diphenyl hydrogen phosphite.
  • Phosphate ester is tricresyl phosphate.
  • Sulfur compound is polysulfide (sulfur element content of 40%) .
  • “Sulfolane derivative” is a compound of the general formula (1) in which R 1 is an alkyl group of 8 carbon atoms, and R 2 and R 3 are hydrogens.
  • ZnDTP zinc dithiophosphate
  • ZnDTP have alkyl group of 6 carbon atoms, and a Zn element content of 8.7 mass%.
  • MoDTC molybdenum dithiocarbamate
  • the friction characteristics were determined by conducting a ball/disc SRV test, in which the grease composition was subjected to friction for 5 min at a frequency of 50 Hz, an amplitude of 1.0 mm, and a temperature of 40°C under a load of 50 N using a 10-mm ball. The friction test was continued for the next 5 min under an increased load of 100 N, and for another 5 min under 200 N. Subsequently, the load was increased in an increment of 100 N, and the coefficient of friction was measured for each load until 600 N.
  • the load at which the coefficient of friction showed an abrupt increase to 0.3 or higher, and a burn occurred was measured as the burn load (load bearing characteristics) .
  • the burn load was measured to be 600 N or higher when burns did not occur under 600 N.
  • the coefficient of friction under 50 N was determined as a measure of friction characteristics because the friction characteristics under a light load are important for saving energy in an actual use environment such as in bearings.
  • the SRV test used ASTM D5706 testing equipment, and used an SUJ-2 ball and disc.
  • the grease composition of the present invention has a small coefficient of friction, and high load bearing characteristics, and excels in lubricity.
  • the grease composition of the present invention has use as a lubricant for, for example, sliding portions or rotors of automobiles and electrical devices.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Claims (3)

  1. Schmiermittelzusammensetzung, umfassend ein Schmierstoff-Basisöl, ein Verdickungsmittel, mindestens eines von Diphenylhydrogenphosphit und Tricresylphosphat in einer Menge von 0,1 bis 10 Masse-% bezüglich der Gesamtmenge der Schmiermittelzusammensetzung, und ein Sulfolanderivat, dargestellt durch die folgende allgemeine Formel (1)
    Figure imgb0004
     worin R1 eine Kohlenwasserstoffgruppe mit 1 bis 20 Kohlenstoffatomen darstellt und R2 und R3 jeweils Wasserstoff oder eine Kohlenwasserstoffgruppe mit 1 bis 20 Kohlenstoffatomen darstellen.
  2. Schmiermittelzusammensetzung gemäß Anspruch 1, wobei das Sulfolanderivat der allgemeinen Formel (1) eines ist, worin R1 eine Alkylgruppe mit 4 bis 18 Kohlenstoffatomen ist und R2 und R3 jeweils Wasserstoff oder eine Kohlenwasserstoffgruppe mit 1 bis 8 Kohlenstoffatomen sind.
  3. Schmiermittelzusammensetzung gemäß Anspruch 1 oder 2, wobei das Sulfolanderivat in einem Anteil von 0,2 bis 10 Masse-% enthalten ist.
EP15829350.6A 2014-08-07 2015-08-05 Schmierfettzusammensetzung Active EP3178910B1 (de)

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JP2014161385A JP2016037554A (ja) 2014-08-07 2014-08-07 グリース組成物
PCT/JP2015/072242 WO2016021641A1 (ja) 2014-08-07 2015-08-05 グリース組成物

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US20180298304A1 (en) * 2015-06-12 2018-10-18 Jtekt Corporation Grease composition, and rolling device for vehicle
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JP2016037554A (ja) 2016-03-22
EP3178910A4 (de) 2018-01-03
CN106661487A (zh) 2017-05-10
WO2016021641A1 (ja) 2016-02-11
CN106661487B (zh) 2020-04-14
EP3178910A1 (de) 2017-06-14

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