WO1999005240A1 - Grease composition for a constant velocity joint - Google Patents

Grease composition for a constant velocity joint Download PDF

Info

Publication number
WO1999005240A1
WO1999005240A1 PCT/EP1998/004983 EP9804983W WO9905240A1 WO 1999005240 A1 WO1999005240 A1 WO 1999005240A1 EP 9804983 W EP9804983 W EP 9804983W WO 9905240 A1 WO9905240 A1 WO 9905240A1
Authority
WO
WIPO (PCT)
Prior art keywords
grease composition
grease
urea
weight
base oil
Prior art date
Application number
PCT/EP1998/004983
Other languages
French (fr)
Inventor
Takahiro Ozaki
Tomoo Munakata
Tsutomu Yoshida
Ryuichi Masumori
Original Assignee
Shell Internationale Research Maatschappij B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shell Internationale Research Maatschappij B.V. filed Critical Shell Internationale Research Maatschappij B.V.
Priority to EP98945164A priority Critical patent/EP0998544B1/en
Priority to DE69816085T priority patent/DE69816085T2/en
Publication of WO1999005240A1 publication Critical patent/WO1999005240A1/en

Links

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
    • C10M115/00—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof
    • C10M115/08—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M119/00—Lubricating compositions characterised by the thickener being a macromolecular compound
    • C10M119/24—Lubricating compositions characterised by the thickener being a macromolecular compound containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/22—Compounds containing sulfur, selenium or tellurium
    • 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
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/066—Molybdenum sulfide
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/081—Inorganic acids or salts thereof containing halogen
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/082—Inorganic acids or salts thereof containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
    • 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
    • C10M2205/026—Butene
    • 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
    • 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
    • C10M2215/006—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/026—Amines, e.g. polyalkylene polyamines; Quaternary amines 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
    • C10M2215/02—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
    • 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
    • C10M2215/065—Phenyl-Naphthyl amines
    • 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
    • C10M2215/08—Amides
    • C10M2215/0813—Amides 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
    • C10M2215/1013—Amides of carbonic or haloformic acids 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
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/12—Partial amides of polycarboxylic acids
    • C10M2215/121—Partial amides of polycarboxylic acids 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
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/2206—Heterocyclic nitrogen compounds 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
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/225—Heterocyclic nitrogen compounds the rings containing both nitrogen and oxygen
    • C10M2215/227—Phthalocyanines
    • C10M2215/2275—Phthalocyanines 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
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/044—Polyamides
    • 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
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/045—Polyureas; Polyurethanes
    • 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
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
    • 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
    • C10M2219/042—Sulfate esters
    • 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
    • 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
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
    • 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
    • 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
    • C10M2223/042—Metal salts thereof
    • 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
    • C10M2223/04—Phosphate esters
    • C10M2223/047—Thioderivatives not containing metallic elements
    • 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
    • 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
    • C10N2010/12—Groups 6 or 16

Definitions

  • the present invention relates to grease compositions which are especially suitable for use in a constant velocity joint also referred to as CVJ.
  • Grease lubrication of CVJ's is extremely harsh since it is carried out under conditions of friction under high surface pressures where slipping and rolling over in reciprocating movement are intermixed.
  • the present invention relates to a grease composition for a constant velocity joint having an extremely long-lived durability and to prevent the occurrence of abnormal wear and flaking.
  • CVJ' s in automobiles are employed in front-wheel drive vehicles and four-wheel drive vehicles, as well as rear-wheel drive vehicles, and demand tends to increase. As automobiles achieve higher speeds, higher outputs and lighter weights, CVJ's become smaller, whilst sustaining higher torques and being applied at higher speeds . Therefore, the grease must meet increasing performance specifications.
  • CVJ's can be categorised as fixed joint or plunging joint depending on the mechanism. Conditions are extremely harsh for fixed joints since these are generally used for wheels and are employed at high angles and under high surface pressure.
  • CVJ greases contain lithium soap as thickener and additives such as sulphur/phosphorus-based extreme pressure agents and molybdenum disulphide. Recently, urea-based greases containing various extreme pressure agents have become more common. These have outstanding heat-resisting properties.
  • JP-A Japanese Laid-Open Patent Application
  • H 6- 57284 (1994) discloses a grease composition for a constant velocity joint in which a urea grease contains, as essential constituents, (A) a molybdenum dialkyldithiocarbamide sulphide, (B) an extreme pressure additive comprising a specific zinc dithiophosphate compound, and (C) an epoxy-modified aliphatic acid ester or an epoxy-modified aliphatic acid glyceride.
  • compositions still suffer from flaking which stems from metal surface fatigue caused by roll-over slipping friction in complex reciprocating movements of the inner and outer wheel channels and balls as well as cages and balls in a CVJ mechanism.
  • compositions for use in cutting and grinding operations.
  • the compositions contain a mixture of a metal thiosulfate and a metal phosphate to impart both extreme pressure and antiwear properties to a base lubricant.
  • CVJ-producing manufacturers and grease-supplying manufacturers are trying to predict flaking in CVJ with the help of frictional wear tests such as the four-ball EP tests described in ASTM D2596.
  • durability in CVJ' s is concerned appropriate greases cannot be selected using the test apparatuses mentioned above. This is thought to be due to the complexity of the lubrication conditions. Therefore, the performance in terms of the flaking life, state of wear and the like is evaluated using a bench test apparatus in which an actual CVJ is used.
  • the aim of the present invention is to provide a novel constant velocity joint grease composition whereby CVJ flaking can be prevented.
  • the present invention relates to a grease composition for a constant velocity joint, which grease composition comprises base oil and urea-based thickener, and which composition further contains from 0.05 to 30% by weight of metal thiosulphate, based on weight of base oil and urea-based thickener.
  • the present invention further relates to the use of a grease composition for lubricating a constant velocity joint, which grease composition comprises base oil and urea-based thickener, which composition further contains from 0.05 to 30% by weight of metal thiosulphate, based on weight of base oil and urea-based thickener.
  • the present invention further relates to a constant velocity joint containing a grease composition comprising base oil and urea-based thickener, which grease composition further contains from 0.05 to 30% by weight of metal thiosulphate, based on weight of base oil and urea-based thickener and the use of metal thiosulphate for reducing flaking of a grease containing base oil and urea-based thickener.
  • the base oil used in the present embodiment can be a mineral oil or a synthetic oil such as an ester oil, ether oil or hydrocarbon oil, or an oil mixed from these.
  • the base oil is a mineral oil.
  • urea-based thickener Any urea-based thickener can be used.
  • examples of urea-based thickeners include diurea, triurea and tetraurea. Further, it is also possible to use various thickeners containing urea compounds such as urea- urethane compounds and urea-i ido compounds.
  • the metal thiosulphate used in the present invention can contain any metal that is capable of forming a metal thiosulphate salt.
  • Typical examples are lithium, sodium, potassium, manganese, calcium, barium, strontium, titanium, zirconium, cadmium, zinc, nickel, cobalt, copper, iron, magnesium, lead, tin, silver, or a mixture of these.
  • a useful class of metal thiosulphate is represented by the following formula
  • R represents a hydrocarbon radical containing 1 to 30 carbon atoms
  • M is a metal capable of forming a metal thiosulphate salt and n is the valence of M.
  • metal thiosulphates are sodium ethyl thiosulphate, potassium benzyl thiosulphate and barium isoamyl thiosulphate.
  • the compounds can be prepared by reacting an alkyl halide with sodium thiosulphate.
  • the metal thiosulphate used in the present invention is sodium thiosulphate.
  • the sodium thiosulphate is Na 2 S 2 0 3
  • sodium thiosulphate is from 0.05 to 30 percent by weight, and preferably from 0.2 to 20 percent by weight based on weight of base oil and urea- based thickener, more preferably 0.2 to 10% by weight, more preferably 0.2 to 8% by weight, most preferably 0.5 to 6% by weight. If the amount is less than 0.05 percent by weight, the flaking-preventing effect is insufficient. If the amount is more than 30 percent by weight, there is no further increase in the effect.
  • composition of the present invention can further contain one or more known additives such as phenol-based and amine-based antioxidants, organic molybdenum compounds, molybdenum disulphide, sulphur-modified fats and oils, sulphur-modified olefins, zinc dithiophosphate, thiophosphate, phosphite, phosphate, and polysulphide, and other such extreme pressure/anti- wear agents, polybutenes, polymethacrylates and other such viscosity enhancers.
  • additives such as phenol-based and amine-based antioxidants, organic molybdenum compounds, molybdenum disulphide, sulphur-modified fats and oils, sulphur-modified olefins, zinc dithiophosphate, thiophosphate, phosphite, phosphate, and polysulphide, and other such extreme pressure/anti- wear agents, polybutenes, polymethacrylates and other such viscosity
  • Greases according to the invention and comparative examples were obtained using the formulations shown in Table 1 and Table 2 by adding the additives to a base grease and processing in a three-roll mill.
  • the compositions of the base greases are given below.
  • the base oil was purified mineral oil with a viscosity at 100°C of 15mm 2 /S.
  • a grease was obtained by reacting diphenylmethane- 4, ' -diisocyanate (295.2 g) and octylamine (304.8g) in a base oil (5,400 g) , and uniformly dispersing the resulting urea compound.
  • the urea compound content was 10 percent by weight.
  • Tetraurea grease A grease was obtained by reacting diphenylmethane- 4, 4' -diisocyanate (334.2 g) , stearylamine (345.6 g) and ethylenediamine (40.2 g) in a base oil (5,280 g) , and uniformly dispersing the resulting urea compound. The urea compound content was 12 percent by weight.
  • a grease was obtained by dissolving lithium 12- hydroxystearate (540 g) in a base oil (5,460 g) , and uniformly dispersing. The lithium soap content was 9 percent by weight. The resulting greases were subjected to durability testing on mounts using actual CVJ's, and the degree of flaking was checked. Test conditions
  • Inc. is an inorganic additive containing sodium thiosulphate.
  • *6 Anguramoru 33 (trade mark, made by the Lubrizol company) is a sulphur-modified olefin.
  • Iruga Lube TPPT (trade mark, made by the Ciba-Geigy company) is triphenylphosphorothionate .
  • the grease composition for a constant velocity joint of the present invention has outstanding extreme pressure properties, and provides more effective flaking prevention properties than do conventional greases. This effect improves the durability of constant velocity joints .

Landscapes

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

Abstract

A grease composition for a constant velocity joint, characterised in that it contains from 0.05 to 30 percent by weight of sodium thiosulphate with respect to a base oil and urea-based thickener.

Description

GREASE COMPOSITION FOR A CONSTANT VELOCITY JOINT
The present invention relates to grease compositions which are especially suitable for use in a constant velocity joint also referred to as CVJ. Grease lubrication of CVJ's is extremely harsh since it is carried out under conditions of friction under high surface pressures where slipping and rolling over in reciprocating movement are intermixed. The present invention relates to a grease composition for a constant velocity joint having an extremely long-lived durability and to prevent the occurrence of abnormal wear and flaking.
CVJ' s in automobiles are employed in front-wheel drive vehicles and four-wheel drive vehicles, as well as rear-wheel drive vehicles, and demand tends to increase. As automobiles achieve higher speeds, higher outputs and lighter weights, CVJ's become smaller, whilst sustaining higher torques and being applied at higher speeds . Therefore, the grease must meet increasing performance specifications. CVJ's can be categorised as fixed joint or plunging joint depending on the mechanism. Conditions are extremely harsh for fixed joints since these are generally used for wheels and are employed at high angles and under high surface pressure.
Usually, CVJ greases contain lithium soap as thickener and additives such as sulphur/phosphorus-based extreme pressure agents and molybdenum disulphide. Recently, urea-based greases containing various extreme pressure agents have become more common. These have outstanding heat-resisting properties. JP-A (Japanese Laid-Open Patent Application) H 6- 57284 (1994) discloses a grease composition for a constant velocity joint in which a urea grease contains, as essential constituents, (A) a molybdenum dialkyldithiocarbamide sulphide, (B) an extreme pressure additive comprising a specific zinc dithiophosphate compound, and (C) an epoxy-modified aliphatic acid ester or an epoxy-modified aliphatic acid glyceride.
Further urea greases have been described in JP-B (Examined Japanese Patent Document) H 4-34590 (1992), JP- A H 6-57283 (1994), JP-A H 6-100878 (1994), JP-A H 7-197072 (1995) and JP-A H 8-41485 (1996), and US-A- 4,840,740, US-A-5,160,645 and US-A-5, 449, 471. These documents teach to add an organic molybdenum compound to a base grease together with yet other additives (such as zinc dithiophosphate) to reduce frictional wear and, as a result, prevent flaking.
However, these compositions still suffer from flaking which stems from metal surface fatigue caused by roll-over slipping friction in complex reciprocating movements of the inner and outer wheel channels and balls as well as cages and balls in a CVJ mechanism.
In US-A-4, 923, 625 grease compositions are described for use in cutting and grinding operations. The compositions contain a mixture of a metal thiosulfate and a metal phosphate to impart both extreme pressure and antiwear properties to a base lubricant.
CVJ-producing manufacturers and grease-supplying manufacturers are trying to predict flaking in CVJ with the help of frictional wear tests such as the four-ball EP tests described in ASTM D2596. Where durability in CVJ' s is concerned appropriate greases cannot be selected using the test apparatuses mentioned above. This is thought to be due to the complexity of the lubrication conditions. Therefore, the performance in terms of the flaking life, state of wear and the like is evaluated using a bench test apparatus in which an actual CVJ is used.
The fact that substances which exhibit outstanding results in general frictional wear tests do not necessarily prevent CVJ flaking or have long durability, makes it difficult to develop CVJ flaking prevention technology.
The aim of the present invention is to provide a novel constant velocity joint grease composition whereby CVJ flaking can be prevented.
It has been found that flaking is reduced in greases containing metal thiosulphate. The present invention relates to a grease composition for a constant velocity joint, which grease composition comprises base oil and urea-based thickener, and which composition further contains from 0.05 to 30% by weight of metal thiosulphate, based on weight of base oil and urea-based thickener.
The present invention further relates to the use of a grease composition for lubricating a constant velocity joint, which grease composition comprises base oil and urea-based thickener, which composition further contains from 0.05 to 30% by weight of metal thiosulphate, based on weight of base oil and urea-based thickener.
Furthermore, the present invention further relates to a constant velocity joint containing a grease composition comprising base oil and urea-based thickener, which grease composition further contains from 0.05 to 30% by weight of metal thiosulphate, based on weight of base oil and urea-based thickener and the use of metal thiosulphate for reducing flaking of a grease containing base oil and urea-based thickener.
The base oil used in the present embodiment can be a mineral oil or a synthetic oil such as an ester oil, ether oil or hydrocarbon oil, or an oil mixed from these. Preferably, the base oil is a mineral oil.
Any urea-based thickener can be used. Examples of urea-based thickeners include diurea, triurea and tetraurea. Further, it is also possible to use various thickeners containing urea compounds such as urea- urethane compounds and urea-i ido compounds.
The metal thiosulphate used in the present invention, can contain any metal that is capable of forming a metal thiosulphate salt. Typical examples are lithium, sodium, potassium, manganese, calcium, barium, strontium, titanium, zirconium, cadmium, zinc, nickel, cobalt, copper, iron, magnesium, lead, tin, silver, or a mixture of these.
A useful class of metal thiosulphate is represented by the following formula
0
(R S - S - 0) M
0
where R represents a hydrocarbon radical containing 1 to 30 carbon atoms, M is a metal capable of forming a metal thiosulphate salt and n is the valence of M. Examples of this class of metal thiosulphates are sodium ethyl thiosulphate, potassium benzyl thiosulphate and barium isoamyl thiosulphate. The compounds can be prepared by reacting an alkyl halide with sodium thiosulphate. Preferably, the metal thiosulphate used in the present invention is sodium thiosulphate. Most preferably, the sodium thiosulphate is Na2S203
(anhydrous), Na2S203.5H20 (pentahydrate) or a mixture of these. Further, it is possible to use commercial additives containing sodium thiosulphate, such as Desilube 88, Desilube Technology, Inc. USA. The amount of sodium thiosulphate added is from 0.05 to 30 percent by weight, and preferably from 0.2 to 20 percent by weight based on weight of base oil and urea- based thickener, more preferably 0.2 to 10% by weight, more preferably 0.2 to 8% by weight, most preferably 0.5 to 6% by weight. If the amount is less than 0.05 percent by weight, the flaking-preventing effect is insufficient. If the amount is more than 30 percent by weight, there is no further increase in the effect.
The composition of the present invention can further contain one or more known additives such as phenol-based and amine-based antioxidants, organic molybdenum compounds, molybdenum disulphide, sulphur-modified fats and oils, sulphur-modified olefins, zinc dithiophosphate, thiophosphate, phosphite, phosphate, and polysulphide, and other such extreme pressure/anti- wear agents, polybutenes, polymethacrylates and other such viscosity enhancers.
Greases according to the invention and comparative examples were obtained using the formulations shown in Table 1 and Table 2 by adding the additives to a base grease and processing in a three-roll mill. The compositions of the base greases are given below. The base oil was purified mineral oil with a viscosity at 100°C of 15mm2/S.
I . Diurea grease
A grease was obtained by reacting diphenylmethane- 4, ' -diisocyanate (295.2 g) and octylamine (304.8g) in a base oil (5,400 g) , and uniformly dispersing the resulting urea compound. The urea compound content was 10 percent by weight.
II. Tetraurea grease A grease was obtained by reacting diphenylmethane- 4, 4' -diisocyanate (334.2 g) , stearylamine (345.6 g) and ethylenediamine (40.2 g) in a base oil (5,280 g) , and uniformly dispersing the resulting urea compound. The urea compound content was 12 percent by weight. III. Lithium soap grease
A grease was obtained by dissolving lithium 12- hydroxystearate (540 g) in a base oil (5,460 g) , and uniformly dispersing. The lithium soap content was 9 percent by weight. The resulting greases were subjected to durability testing on mounts using actual CVJ's, and the degree of flaking was checked. Test conditions
Rotational speed 1,400 rpm Load torque 294 N m
Joint angle 6 deg Joint type Burfield joint Further, the fusion load (N) was determined using the four-ball EP test specified in ASTM D2596. The results are collated in Tables 1 to 4.
It should be noted that, in the tables, *1 to 7 and ** are as follows. *1 Desilube 88 (trade mark, made by Desilube Technology
Inc.) is an inorganic additive containing sodium thiosulphate.
*2 Moliban A (trade mark, made by the Vanderbilt company) is molybdenum dithiocarbamate .
*3 Sakura Lube 600 (trade mark, made by Asahi Denka) is molybdenum dithiocarbanate.
*4 Sakura Lube 300 (trade mark, made by Asahi Denka) is molybdenum dithiophosphate. *5 Lubrizol 1395 (trade mark, made by the Lubrizol company) is zinc dithiophosphate.
*6 Anguramoru 33 (trade mark, made by the Lubrizol company) is a sulphur-modified olefin.
*7 Iruga Lube TPPT (trade mark, made by the Ciba-Geigy company) is triphenylphosphorothionate .
**For the degree of flaking, the condition after
12,600,000 revolutions, and the condition after
25,200,000 revolutions of the CVJ was observed and evaluated as follows. 0 No flaking o Minor flaking Δ Moderate flaking x Extensive flaking
TABLE 1
Figure imgf000010_0001
TABLE 2
Figure imgf000011_0001
TABLE 3
Embodiment
Composition Base grease Diurea grease 93 wt%
Tetraurea grease Lithium grease 97 97 97
Additives a2S2θ3 (anhydrous)
Na2S2035H20
Desilube 88 *1
Moliban A *2
Sakura Lube 600 *3
Sakura Lube 300 *4
Lubrizol 1395 *5
Anguramoru 33 *6
Iruga Lube TPPT *7
Molybdenum disulphide
Total 100 100 100 100
Test results Four-ball EP Fusion load (N) 6076 3920 6076 3087 test
Degree of By 12,600,000 flaking * revolutions
By 25,200,000 revolutions
TABLE 4
Embodiment 5 6 7 8
Composition Base grease Diurea grease 96 96 wt
Tetraurea grease 93 96 Lithium grease
Additives a2S2θ3 (anhydrous)
Na2S2θ3.5H20
Desilube 88 *1
Moliban A *2 5
Sakura Lube 600 *3 3 3
Sakura Lube 300 *4 3
Lubrizol 1395 *5 1 1
Anguramoru 33 *6
Iruga Lube TPPT *7 1 1
Molybdenum 1 disulphide
Total 100 100 100 1O0
Test results Four-ball EP Fusion load (N) 2450 2450 3087 2450 test
Degree of By 12, 600,000 Δ X X X flaking ** revolutions
By 25,200,000 X - - - revolutions
As is clear from the results shown in Tables 1 to , the grease composition for a constant velocity joint of the present invention has outstanding extreme pressure properties, and provides more effective flaking prevention properties than do conventional greases. This effect improves the durability of constant velocity joints .

Claims

C L A I M S
1. Grease composition for a constant velocity joint, which grease composition comprises base oil and urea- based thickener, and which composition further contains from 0.05 to 30% by weight of metal thiosulphate, based on weight of base oil and urea-based thickener.
2. Grease composition according to claim 1, in which grease composition the metal thiosulphate is sodium thiosulphate.
3. Use of a grease composition for lubricating a constant velocity joint, which grease composition comprises base oil and urea-based thickener, which composition further contains from 0.05 to 30% by weight of metal thiosulphate, based on weight of base oil and urea-based thickener.
4. Use of a grease composition according to claim 3, in which the metal thiosuphate is sodium thiosulphate.
5. Use of a grease composition according to claim 3 or 4, in which the grease composition contains from 0.2 to
20% by weight of metal thiosulphate.
6. Use of a grease composition according to any one of claims 3-5, in which the base oil is a mineral oil.
7. Constant velocity joint containing a grease composition comprising base oil and urea-based thickener, which grease composition further contains from 0.05 to 30% by weight of metal thiosulphate, based on weight of base oil and urea-based thickener.
8. Use of metal thiosulphate for reducing flaking of a grease containing base oil and urea-based thickener.
PCT/EP1998/004983 1997-07-24 1998-07-23 Grease composition for a constant velocity joint WO1999005240A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98945164A EP0998544B1 (en) 1997-07-24 1998-07-23 Grease composition for a constant velocity joint
DE69816085T DE69816085T2 (en) 1997-07-24 1998-07-23 LUBRICATING GREASE COMPOSITION FOR HOMOKINETIC CLUTCH

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP21417197A JP3812995B2 (en) 1997-07-24 1997-07-24 Grease composition for constant velocity joints
JP214171/97 1997-07-24

Publications (1)

Publication Number Publication Date
WO1999005240A1 true WO1999005240A1 (en) 1999-02-04

Family

ID=16651419

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/004983 WO1999005240A1 (en) 1997-07-24 1998-07-23 Grease composition for a constant velocity joint

Country Status (6)

Country Link
EP (1) EP0998544B1 (en)
JP (1) JP3812995B2 (en)
KR (1) KR100503108B1 (en)
CN (1) CN1097630C (en)
DE (1) DE69816085T2 (en)
WO (1) WO1999005240A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002012418A3 (en) * 2000-08-10 2002-04-25 Shell Int Research Grease composition with improved rust prevention and abrasion resistance properties
WO2006069986A1 (en) * 2004-12-27 2006-07-06 Shell Internationale Research Maatschappij B.V. Urea-based lubricating grease composition

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8153053B2 (en) 2002-11-21 2012-04-10 Diamet Corporation Method for forming compact from powder and sintered product
JP5225354B2 (en) * 2010-10-18 2013-07-03 昭和シェル石油株式会社 Grease composition with improved rust and wear resistance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505223A (en) * 1967-03-30 1970-04-07 Ethyl Corp Lubricant compositions
US4923625A (en) * 1989-09-28 1990-05-08 Desilube Technology, Inc. Lubricant compositions
US4986923A (en) * 1989-06-27 1991-01-22 Amoco Corporation Front-wheel drive grease with synergistic sulfate and carbonate additive system
EP0617117A1 (en) * 1993-03-26 1994-09-28 The Lubrizol Corporation Lubricating compositions, greases, aqueous fluid containing organic ammonium thiosulfates

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505223A (en) * 1967-03-30 1970-04-07 Ethyl Corp Lubricant compositions
US4986923A (en) * 1989-06-27 1991-01-22 Amoco Corporation Front-wheel drive grease with synergistic sulfate and carbonate additive system
US4923625A (en) * 1989-09-28 1990-05-08 Desilube Technology, Inc. Lubricant compositions
EP0617117A1 (en) * 1993-03-26 1994-09-28 The Lubrizol Corporation Lubricating compositions, greases, aqueous fluid containing organic ammonium thiosulfates

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002012418A3 (en) * 2000-08-10 2002-04-25 Shell Int Research Grease composition with improved rust prevention and abrasion resistance properties
US6800595B2 (en) 2000-08-10 2004-10-05 Shell Oil Company Grease composition with improved rust prevention and abrasion resistance properties
WO2006069986A1 (en) * 2004-12-27 2006-07-06 Shell Internationale Research Maatschappij B.V. Urea-based lubricating grease composition
CN101107346B (en) * 2004-12-27 2010-12-01 国际壳牌研究有限公司 Urea-based lubricating grease composition
US7867956B2 (en) 2004-12-27 2011-01-11 Shell Oil Company Urea-based lubricating grease composition

Also Published As

Publication number Publication date
JPH1135965A (en) 1999-02-09
DE69816085T2 (en) 2004-05-19
EP0998544B1 (en) 2003-07-02
EP0998544A1 (en) 2000-05-10
KR20010022118A (en) 2001-03-15
KR100503108B1 (en) 2005-07-25
CN1097630C (en) 2003-01-01
JP3812995B2 (en) 2006-08-23
DE69816085D1 (en) 2003-08-07
CN1260825A (en) 2000-07-19

Similar Documents

Publication Publication Date Title
US5160645A (en) Grease composition for constant velocity joint
EP0714975B1 (en) Lubricating grease composition
KR100676443B1 (en) Grease composition for constant velocity joint
US5952273A (en) Grease composition for constant velocity joints
KR100348912B1 (en) Grease Composition for Constant Velocity Joint
JP3001171B2 (en) Urea grease composition
KR100503107B1 (en) Urea grease composition
KR100695041B1 (en) Grease composition for constant velocity joints
EP0998544B1 (en) Grease composition for a constant velocity joint
CA2093029C (en) Lubricants, particularly lubricating grease compositions for constant velocity universal joints
AU2001244178B2 (en) Grease composition for constant velocity joints
AU2001244178A1 (en) Grease composition for constant velocity joints

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 98806285.2

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): CN KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1998945164

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 09462248

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 1020007000688

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 1998945164

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020007000688

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 1998945164

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1020007000688

Country of ref document: KR