US20100035776A1 - Lubricating grease composition - Google Patents

Lubricating grease composition Download PDF

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Publication number
US20100035776A1
US20100035776A1 US12/440,144 US44014407A US2010035776A1 US 20100035776 A1 US20100035776 A1 US 20100035776A1 US 44014407 A US44014407 A US 44014407A US 2010035776 A1 US2010035776 A1 US 2010035776A1
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US
United States
Prior art keywords
lubricating grease
grease composition
composition according
extreme
benzothiazolylsulphenamide
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.)
Abandoned
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US12/440,144
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English (en)
Inventor
Takahiro Ozaki
Koichi Numazawa
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Shell USA Inc
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Individual
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Filing date
Publication date
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Assigned to SHELL OIL COMPANY reassignment SHELL OIL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NUMAZAWA, KOICHI, OZAKI, TAKAHIRO
Publication of US20100035776A1 publication Critical patent/US20100035776A1/en
Abandoned 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
    • 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
    • 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
    • C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
    • C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
    • 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
    • C10M135/32—Heterocyclic sulfur, selenium or tellurium compounds
    • C10M135/36—Heterocyclic sulfur, selenium or tellurium compounds the ring containing sulfur and carbon with nitrogen or oxygen
    • 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
    • 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
    • C10M2207/128—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 containing hydroxy groups; Ethers thereof
    • C10M2207/1285—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 containing hydroxy groups; Ethers thereof used as thickening agents
    • 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
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
    • 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
    • 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
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/36—Seal compatibility, e.g. with rubber
    • 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
    • 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

  • This invention provides a lubricating grease composition, and in particular a lubricating grease composition to be used at lubrication points where extreme-pressure properties and seal-resistance properties at high loads are required, such as in the bearings, gears, suspensions, joints and steering gear of domestic electrical appliances, construction machinery, transportation machinery, agricultural machinery, steel-making plant and machinery, and so on.
  • extreme-pressure greases include urea greases containing as their essential constituents sulphurised molybdenum dialkyl dithiocarbamates and sulphur/phosphorus-type extreme-pressure additives comprised of one or a blend of two or more selected from a group comprised of sulphurised oils and fats, sulphurised olefins, tricresyl phosphate, trialkyl dithiophosphates or zinc dialkyl dithiophosphates. See for example Japanese Patent 4-34590.
  • a sealing material such as a boot or a dust cover is used in order to create a tight seal so that the grease is reliably supplied to the lubrication points and to prevent ingress of muddy water or dust from outside.
  • chloroprene rubbers, nitrile rubbers, silicone rubbers, polyester-type elastomers, polyolefin-type rubbers and so on are used, but chloroprene rubbers, which have excellent mechanical strength, flexibility, heat resistance and oil resistance and which are low in cost, are used in particular.
  • molybdenum dialkyl dithiocarbamates are thermally stable and compatibility with seals is relatively good, but additives such as the aforementioned sulphurised oils and fats, sulphurised olefins and zinc dialkyl (aryl) dithiophosphates which are used therewith in order to enhance further the lubricating performance of the molybdenum dialkyl dithiocarbamates have a tendency to be detrimental to the seal-resistance properties.
  • this invention is intended to provide excellent grease compositions which have high extreme-pressure properties and which also do not damage sealing material and are superior in regard to compatibility therewith.
  • the present invention provides a lubricating grease composition
  • a lubricating grease composition comprising a base oil, the composition further comprising: (A) from 0.1 to 3% by weight of a molybdenum dialkyl dithiocarbamate; (B) from 0.1 to 3% by weight of one or more benzothiazole compounds; and (C) from 0.1 to 3% by weight of one or more calcium sulphonates.
  • this invention provides a lubricating grease composition wherein from 0.1 to 3% by weight of a molybdenum dialkyl dithiocarbamate as shown in the undermentioned Formula 1
  • R1 denotes an alkyl group having from 1 to 10 carbons or an alkylmercapto group
  • N-tert-butyl-2-benzothiazolylsulphenamide, N-cyclohexyl-2-benzothiazolylsulphenamide, N-oxydiethylene-2-benzothiazolylsulphenamide or 2-(4-morpholinyldithio)benzothiazole and from 0.1 to 3% by weight of calcium sulphonates are incorporated in a grease in which a thickening agent is blended in the base oil.
  • molybdenum dialkyl dithiocarbamates used in this invention are known to improve extreme-pressure properties and wear-resistance in greases, but recent years have seen PRTR controlled substances (PRTR Law; Pollutant Release Transfer Register) and a desire to use molybdenum compounds as little as possible, or to use replacement compounds for molybdenum compounds, in view of concerns about the environment and so on.
  • PRTR Law Pollutant Release Transfer Register
  • This invention reduces to the utmost the amount of molybdenum dialkyl dithiocarbamates used and, by incorporating with these the aforementioned benzothiazole compounds and calcium sulphonates, is not only capable of improving the extreme-pressure properties but is also capable of improving compatibility between the chloroprene rubber in sealing materials and the grease.
  • thickening agent optionally but preferably incorporated in the aforementioned base oil it is possible to use lithium soaps, lithium complex soaps and diurea, triurea, tetraurea, polyurea and other urea compounds.
  • alkyl groups having from 1 to 24 carbons are preferably used for the alkyl groups, but alkyl groups having from 3 to 18 carbons are preferred.
  • molybdenum dialkyl dithiocarbamates mention be made of sulphurised molybdenum diethyl dithiocarbamate, sulphurised molybdenum dipropyl dithiocarbamate, sulphurised molybdenum dibutyl dithiocarbamate, sulphurised molybdenum dipentyl dithiocarbamate, sulphurised molybdenum dihexyl dithiocarbamate, sulphurised molybdenum dioctyl dithiocarbamate, sulphurised molybdenum didecyl dithiocarbamate, sulphurised molybdenum didodecyl dithiocarbamate, sulphurised molybdenum (butylphenyl)dithiocarbamate, sulphurised molybdenum (nonylphenyl)dithiocarbamate, sulphurised
  • 2-mercaptobenzothiazole has previously been proposed as a constituent in metalworking fluids and as a constituent in cutting and grinding process fluids
  • 2-(4-morpholinyldithio)benzothiazole has been disclosed as a constituent in aqueous lubricants for use in plastic working of metals.
  • the aforementioned calcium sulphonates used in this invention may be ordinary calcium sulphonates, and as examples mention may be made of calcium salts of petroleum sulphonic acid, calcium salts of alkyl aromatic sulphonic acids, overbased calcium salts of petroleum sulphonic acid and overbased calcium salts of alkyl aromatic sulphonic acids. Further, these may be used singly or in suitable mixtures.
  • the amount of the aforementioned molybdenum dialkyl dithiocarbamates to be incorporated in the grease is from 0.1 to 3% by weight, and in respect of the aforementioned 2-mercaptobenzothiazole, N-tert-butyl-2-benzothiazolylsulphenamide, N-cyclohexyl-2-benzothiazolylsulphenamide, N-oxydiethylene-2-benzothiazolylsulphenamide or 2-(4-morpholinyldithio) benzothiazole, at least one is preferably incorporated in the order of from 0.1 to 3% by weight and calcium sulphonates in the order of from 0.1 to 31 by weight.
  • the amount to be incorporated is preferably of the order of from 0.5 to 1% by weight.
  • lubricating grease composition of this invention it is possible in the lubricating grease composition of this invention to use also, as appropriate, in addition to the aforementioned blend constituents, additives such as anti-oxidants, rust preventatives, extreme-pressure additives and anti-wear agents.
  • This invention reduces to the utmost the amount used of molybdenum dialkyl dithiocarbamates, which are PRTR controlled substances, and, by incorporating with these the aforementioned benzothiazole compounds, such as 2-mercapto benzothiazole, N-tert-butyl-2-benzothiazolylsulphenamide, N-cyclohexyl-2-benzothiazolylsulphenamide, N-oxydiethylene-2-benzothiazolylsulphenamide and 2-(4-morpholinyldithio) benzothiazole, and the aforementioned calcium sulphonates, not only is it capable of improving the extreme-pressure properties but it also improves compatibility between the chloroprene rubber in sealing materials and the grease.
  • benzothiazole compounds such as 2-mercapto benzothiazole, N-tert-butyl-2-benzothiazolylsulphenamide, N-cyclohexyl-2-benzothiazolylsulphenamide,
  • the lubricating grease compositions of Examples 1 to 5 and Comparative Examples 1 to 11 used to contrast therewith were obtained by proportionately incorporating the base groups and additives shown below and, after adding the various additives to the base greases, by kneading with a three-roll mill and finishing to a uniform consistency.
  • Diphenylmethane-4,4′-diisocyante (295.2 g) and octylamine (304.8 g) were reacted in a refined mineral oil with a kinetic viscosity of approximately 15 mm 2 /s at 100° C. (5400 g), until the diurea compound produced was uniformly dispersed and a grease obtained.
  • the amount of the urea compound included was 10% by weight.
  • This urea based grease had a penetration of 283 and dropping point of 263° C. as defined in JIS-K2220 (25° C., 60 W).
  • Lithium-12-hydroxystearate (630 g) was dissolved in a refined mineral oil with a kinetic viscosity of approximately 15 mm 2 /s at 100° C. (6370 g), until it was uniformly dispersed and a grease obtained.
  • the amount of the lithium soap included was 9% by weight.
  • This lithium soap based grease had a penetration of 268 and dropping point of 198° C. as defined in JIS-K2220 (25° C., 60 W).
  • Molybdenum dialkyl dithiocarbamate (MoDTC): The commercial product called “Molyvan A” of Vanderbilt Ltd. was used. 3. 2-mercaptobenzothiazole 4. 2-(4-morpholinyldithio)benzothiazole 5. Calcium sulphonate: Calcium salt of petroleum sulphonic acid 6. Zinc dialkyl dithiocarbamate (ZnDTC): The commercial product called “Lubrizol 1395” of Lubrizol Ltd. was used. 7. Sulphurised olefin: The commercial product called “Anglamol 33” of Lubrizol Ltd. was used. 8. Calcium salicylate: The commercial product called “M7121” of Infineum Ltd. was used.
  • Test method Four-ball tests were carried out in accordance with ASTM D2596.
  • Test conditions Speed 1770 ⁇ 60 rpm Duration 10 seconds Temperature Room temperature Test objective: The weld load (N) was obtained.
  • Test method A chloroprene rubber immersion test was carried out in accordance with JIS K6258. Test conditions: (1) Immersion for 120 hours at 140° C. was carried out in respect of the lubricating grease compositions using a urea based grease.
  • Comparative Example 9 exhibited a low weld load value of 1961 N and so extreme-pressure properties were low, while elongation change was ⁇ 35.1% and tensile strength change ⁇ 37.2%, both under ⁇ 25%, so that compatibility with sealing material was poor.
  • Comparative Examples 2, 3, 4, 5, 8 and 10 all exhibited a large value for weld load at 3089 N and so extreme-pressure properties were high, but elongation change was from ⁇ 36.6% to ⁇ 62.4% and tensile strength change from ⁇ 37.2% to ⁇ 64.3%, in all cases above ⁇ 25%, so that compatibility with sealing material was evidently poor.
  • Example 1 Furthermore, from a comparison of Example 1 and Comparative Example 3, it can be seen that the effect of improving seal compatibility is small with dispersants other than the calcium sulphonates of this invention.

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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)
US12/440,144 2006-09-08 2007-09-07 Lubricating grease composition Abandoned US20100035776A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2006244319A JP2008063491A (ja) 2006-09-08 2006-09-08 潤滑グリース組成物
JP2006-244319 2006-09-08
PCT/EP2007/059388 WO2008028955A2 (fr) 2006-09-08 2007-09-07 Composition de graisse lubrifiante

Publications (1)

Publication Number Publication Date
US20100035776A1 true US20100035776A1 (en) 2010-02-11

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Application Number Title Priority Date Filing Date
US12/440,144 Abandoned US20100035776A1 (en) 2006-09-08 2007-09-07 Lubricating grease composition

Country Status (7)

Country Link
US (1) US20100035776A1 (fr)
EP (1) EP2066770A2 (fr)
JP (1) JP2008063491A (fr)
KR (1) KR20090058012A (fr)
CN (1) CN101528898A (fr)
BR (1) BRPI0716984A2 (fr)
WO (1) WO2008028955A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9012386B2 (en) 2010-02-26 2015-04-21 Kyodo Yushi Co., Ltd. Grease composition for hub unit bearing employing an angular contact ball bearing and hub unit bearing

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105296052A (zh) * 2015-11-20 2016-02-03 沈阳黎明航空发动机(集团)有限责任公司 一种耐丁腈橡胶的低温润滑脂
CN106350187A (zh) * 2016-08-29 2017-01-25 江苏博格东进管道设备有限公司 管道加工润滑用液体组合物的制备方法
CN108949296B (zh) * 2018-08-15 2021-11-05 江苏四新界面剂科技有限公司 单晶硅切割表面活性剂

Citations (3)

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US5922654A (en) * 1995-10-23 1999-07-13 Nsk Ltd. Lubricant composition
US6376432B1 (en) * 2001-03-26 2002-04-23 Exxonmobil Research And Engineering Company Low friction grease for constant velocity universal joints, particularly plunging type joints that is compatible with silicone elastomer boots
WO2005083043A1 (fr) * 2004-02-26 2005-09-09 Nippon Oil Corporation Composition de graisse pour joint de vitesse constante

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JP3687708B2 (ja) * 1996-11-11 2005-08-24 日本精工株式会社 転動装置用グリース組成物
GB2327944B (en) * 1997-08-06 2001-10-10 Ciba Sc Holding Ag Hetercyclic thioethers as additives for lubricants
JP4248688B2 (ja) * 1999-06-29 2009-04-02 協同油脂株式会社 等速ジョイント用グリース組成物
JP4567157B2 (ja) * 2000-07-28 2010-10-20 協同油脂株式会社 等速ジョイント用グリース組成物
JP4004276B2 (ja) * 2001-11-21 2007-11-07 株式会社松村石油研究所 グリース組成物
JP4272930B2 (ja) * 2003-06-18 2009-06-03 昭和シェル石油株式会社 等速ジョイント用ウレアグリース組成物
US7442673B2 (en) * 2003-08-15 2008-10-28 Crompton Corporation Reaction products of mercaptobenzothiazoles, mercaptothiazolines, and mercaptobenzimidazoles with epoxides as lubricant additives
JP5379343B2 (ja) * 2006-05-10 2013-12-25 昭和シェル石油株式会社 等速ジョイント用グリース組成物

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5922654A (en) * 1995-10-23 1999-07-13 Nsk Ltd. Lubricant composition
US6376432B1 (en) * 2001-03-26 2002-04-23 Exxonmobil Research And Engineering Company Low friction grease for constant velocity universal joints, particularly plunging type joints that is compatible with silicone elastomer boots
WO2005083043A1 (fr) * 2004-02-26 2005-09-09 Nippon Oil Corporation Composition de graisse pour joint de vitesse constante
US20070179066A1 (en) * 2004-02-26 2007-08-02 Kiyomi Sakamoto Grease composition for constant velocity joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9012386B2 (en) 2010-02-26 2015-04-21 Kyodo Yushi Co., Ltd. Grease composition for hub unit bearing employing an angular contact ball bearing and hub unit bearing

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Publication number Publication date
EP2066770A2 (fr) 2009-06-10
WO2008028955A3 (fr) 2008-04-24
JP2008063491A (ja) 2008-03-21
KR20090058012A (ko) 2009-06-08
BRPI0716984A2 (pt) 2013-09-24
WO2008028955A2 (fr) 2008-03-13
CN101528898A (zh) 2009-09-09

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