AU2007246315A1 - Grease composition for constant velocity joints - Google Patents
Grease composition for constant velocity joints Download PDFInfo
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- AU2007246315A1 AU2007246315A1 AU2007246315A AU2007246315A AU2007246315A1 AU 2007246315 A1 AU2007246315 A1 AU 2007246315A1 AU 2007246315 A AU2007246315 A AU 2007246315A AU 2007246315 A AU2007246315 A AU 2007246315A AU 2007246315 A1 AU2007246315 A1 AU 2007246315A1
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- constant velocity
- molybdenum
- sulphurised
- grease
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
- C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
- C10M137/10—Thio derivatives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/06—Mixtures of thickeners and additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
- C10M2215/1026—Ureas; Semicarbazides; Allophanates used as thickening material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2215/226—Morpholines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2217/0456—Polyureas; Polyurethanes used as thickening agents
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/046—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for traction drives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2300/00—Special features for couplings or clutches
- F16D2300/06—Lubrication details not provided for in group F16D13/74
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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)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
Description
WO2007/129775 PCT/JP2007/059992 DESCRIPTION GREASE COMPOSITION FOR CONSTANT VELOCITY JOINTS Technical Field The present invention relates to a grease composition for constant velocity joints suitable for use at the lubrication points of constant velocity joints in automobiles. Background Art Hitherto, lithium soap greases which contain molybdenum disulphide and extreme-pressure lithium soap greases which contain sulphur-phosphorus type additives have been used as greases for constant velocity joints. In recent years, low-wear and temperature-resistant greases for high-temperature use in which urea compounds or lithium complex soaps are used as the thickener and where organomolybdenum compounds are added have since become commonly used. In particular, because ball-type constant velocity joints are subject to a complex rolling-sliding action and are lubricated under high surface pressure, the parts constituting the constant velocity joint, namely the outer race, inner race, ball and cage, are repeatedly subject to stresses, so that wear occurs and flaking (a peeling phenomenon) is generated. A grease which reduces wear in constant velocity joints, which inhibits the flaking due to metal fatigue and which has excellent durability has been proposed, and WO2007/129775 PCT/JP2007/059992 2 this effect cited, by using a molybdenum dialkyldiothiocarbamate and a molybdenum dithiophosphate together in a urea grease and adding 10% by weight, see JP-B 5-79280 (1993). Disclosure of the Invention Problem to be solved by the Invention The present invention provides a grease for use in constant velocity joints which improves on the aforementioned greases, which reduces wear. in constant velocity joints, which inhibits the flaking due to metal fatigue and which further has excellent durability. Means for solving Problem For the present invention, durability tests were carried out by adding various additives to a low-wear urea grease in which (A) a molybdenum dialkyldithiocarbamate and (B) a molybdenum dithiophosphate were used together, and by using wear resistance tests by means of an SRV test rig and actual constant velocity joints. Flaking-resistance performance was evaluated, and as a result perfection of the present invention was achieved. In other words, the present invention provides a grease for use in constant velocity joints which incorporates in a urea grease (A) a molybdenum dialkyldithiocarbamate as represented by the undermentioned formula I, (B) a molybdenum dithiophosphate as represented by the undermentioned formula II, (C) 2-(4-morpholinyldithio)benzothiazole as WO 2007/129775 3 PCT/JP2007/059992 represented by the undermentioned formula III and (D) a calcium sulphonate. Chemical structure 1 R SOs 0 S R K "7Mo,,, "7 N-C Mo Mo C-N ( ) R S S S. R (where R denotes an alkyl group of 1 ~ 24 carbons) Chemical structure 2 RO S 0 S O S OR P Mo Mo PC RO S S S OR (where R is a primary or secondary alkyl group or an aryl group) Chemical structure 3 .N' a C- S- -N 0(I) CHA - CH S The blending is such that the total of the aforementioned (A) and (B) is not more than 10% by weight, (C) is not more than 3% by weight and (D) is not more than 3% by weight. In a preferred embodiment according to the present invention a grease for use in constant velocity joints is provided by further incorporating not more than 3% by weight of (E) a zinc dithiophosphate as represented by the undermentioned formula IV.
WO 2007/129775 PCT/JP2007/059992 4 Chemical structure 4 R'O S S OR' R'O S S OR' (where R' is a primary or secondary alky group or an aryl group) In a further aspect the present invention provides the use of the grease composition in constant velocity joints, preferably in automobiles. Effect of the Invention In the present invention, it is inferred - without intending to be limited to any specific theory - that the urea compound adheres to the metal surfaces, iron oxide or iron sulphide is formed in the lower layer thereof, making a solid film, and so it is possible to offer a grease for use in constant velocity joints which reduces wear in the constant velocity joints and which also inhibits the phenomenon of flaking due to the accompanying metal fatigue, and which has excellent durability. Best Mode for Carrying Out the Invention For the base oil of the invention it is possible to use e.g. mineral oils, plant oils and synthetic oils such as ester oils, ether oils and hydrocarbon oils, or mixtures thereof.
WO2007/129775 PCT/JP2007/059992 5 For the thickener added to this base oil it is possible to use urea compounds such as monoureas, diureas, triureas and tetraureas. For example, there are diurea compounds obtained by reaction of diisocyanates and monoamines, and tetraurea compounds obtained by reaction of diisocyanates, monoamines and diamines. As specific examples of diisocyanates, mention may be made of diphenylmethane diisocyanate, tolylene diisocyanate, bitolylene diisocyanate and naphthylene diisocyanate. Also, as examples of monoamines, mention may be made of octylamine, dodecylamine, stearylamine, oleylamine, aniline, p-toluidine and cyclohexylamine. As examples of diamines, mention may be made of ethylenediamine, propanediamine, butanediamine and phenylenediamine. The molybdenum dialkyldithiocarbamates as represented by aforementioned formula (I) and which are the aforementioned constituent (A) have alkyl groups of 1 ~ 24 carbons as their R, and preferably have alkyl groups of 3 ~ 18 carbons. As specific examples, mention may be made of sulphurised molybdenum diethyldithiocarbamate, sulphurised molybdenum dipropyldithiocarbamate, sulphurised molybdenum dibutyldithiocarbamate, sulphurised molybdenum dipentyldithiocarbamate, sulphurised molybdenum dihexyldithiocarbamate, sulphurised molybdenum dioctyldithiocarbamate, sulphurised molybdenum didecyldithiocarbamate, sulphurised molybdenum didodecyl dithiocarbamate, sulphurised molybdenum di(butylphenyl)dithiocarbamate, sulphurised molybdenum di(nonylphenyl)dithiocarbamate, sulphurised oxymolybdenum diethyldithiocarbamate, sulphurised oxymolybdenum dipropyldithiocarbamate, sulphurised oxymolybdenum WO 2007/129775 PCT/JP2007/059992 6 dibutyldithiocarbamate, sulphurised oxymolybdenum dipentyldithiocarbamate, sulphurised oxymolybdenum dihexyldithiocarbamate, sulphurised oxymolybdenum dioctyldithiocarbamate, sulphurised oxymolybdenum didecyldithiocarbamate, sulphurised oxymolybdenum didodecyldithiocarbamate, sulphurised oxymolybdenum di(butylphenyl)dithiocarbamate, sulphurised oxymolybdenum di(nonylphenyl)dithiocarbamate, and mixtures thereof. As examples of the molybdenum dithiophosphates as represented by aforementioned formula (II) and which are the aforementioned constituent (B) mention may be made of sulphurised molybdenum diethyldithiophosphate, sulphurised molybdenum dipropyldithiophosphate, sulphurised molybdenum dibutyldithiophosphate, sulphurised molybdenum dipentyldithiophosphate, sulphurised molybdenum dihexyldithiophosphate, sulphurised molybdenum dioctyldithiophosphate, sulphurised molybdenum didecyldithiophosphate, sulphurised molybdenum didodecyldithiophosphate, sulphurised molybdenum di(butylphenyl)dithiophosphate, sulphurised molybdenum di(nonylphenyl) dithiophosphate, sulphurised oxymolybdenum diethyldithiophosphate, sulphurised oxymolybdenum dipropyldithiophosphate, sulphurised oxymolybdenum dibutyldithiophosphate, sulphurised oxymolybdenum dipentyldithiophosphate, sulphurised oxymolybdenum dihexyldithiophosphate, sulphurised oxymolybdenum dioctyldithiophosphate, sulphurised oxymolybdenum didecyldithiophosphate, sulphurised oxymolybdenum didodecyldithiophosphate, sulphurised oxymolybdenum di(butylphenyl)dithiophosphate, sulphurised oxymolybdenum di(nonylphenyl) dithiophosphate, and mixtures thereof.
WO 2007/129775 PCT/JP2007/059992 7 The aforementioned component (C) is 2-(4 morpholinyldithio)benzothiazole as represented by the aforementioned formula (III), and it is a slightly yellow-white powder of molecular weight 284. In ordinary applications it is the substance used as a vulcanisation accelerator of vulcanised rubber such as tires, tubes and footwear. The aforementioned component (D) is an ordinary calcium sulphonate. Examples are the calcium salt of petroleum sulphonic acid, the calcium salt of an alkyl aromatic sulphonic acid, the overbased calcium salt of petroleum sulphonic acid and the overbased calcium salt of an alkyl aromatic sulphonic acid. It is possible to use these singly or in mixtures. This component (D) functions as a dispersant, controls wear resistance and further contributes an improvement in durability. The zinc dithiophosphates as represented by the aforementioned formula (IV) and which are the aforementioned component (E) are zinc dialkyl dithiophosphates or zinc diaryldithiophosphates. In the aforementioned formula (IV), R' denotes. a primary or secondary alkyl group or an aryl group. For example, it may be a methyl group, ethyl group, propyl group, isopropyl group, butyl group, secondary butyl group, isobutyl group, pentyl group, 4-methylpentyl group, hexyl group, 2-ethylhexyl group, heptyl group, octyl group, nonyl group, decyl group, isodecyl group, dodecyl group, tetradecylgroup, hexadecyl group, octadecyl group, eicosyl group, docosyl group, tetracosyl group, cyclopentyl group, cyclohexyl group, methylcyclohexyl group, ethylcyclohexyl group, dimethylcyclohexyl group, cycloheptyl group, phenyl group, tolyl group, xylyl group, WO2007/129775 PCT/JP2007/059992 8 ethyl phenyl group, propylphenyl group, butylphenyl group, pentylphenyl group, hexylphenyl group, heptylphenyl group, octylphenyl group, nonylphenyl group, decylphenyl group, dodecylphenyl group, tetradecylphenyl group, hexadecylphenyl group, octadecylphenyl, benzyl group or a phenethyl group. Each of these R' may be the same or different. As specific examples of the primary alkyl zinc dithiophosphates of the aforementioned component (E) mention may be made of zinc diisopropyl dithiophopsphate, zinc diisobutyl dithiophosphate and zinc diisodecyl dithiophosphate. Also, as specific examples of the secondary alkyl zinc dithiophosphates mention may be made of mono or di sec-pentyl zinc dithiophosphate and mono or di-4-methyl 2-pentyl zinc dithiophosphate. As specific examples of aryl zinc dithiophosphates mention may be made of zinc di-para-dodecylphenol dithiophosphate, zinc diheptylphenol dithiophosphate and zinc di-para-nonylphenol dithiophosphate. In the grease composition for constant velocity joints of the present invention, the amount of molybdenum dithiocarbamate which is component (A) and molybdenum dithiophosphate which is component (B) blended into the urea grease may be made such that it is not more than 10% by weight. If the amount of the aforementioned components (A) and (B) in the urea grease is greater than mentioned above, the effect is the same or may even be the reverse effect. Normally, an amount of 1 ~ 3% by weight of each of component (A) and component (B) is preferred. Also, the amount of 2 -(4-morpholinyldithio) benzothiazole which is component (C) in the grease is not WO2007/129775 PCT/JP2007/059992 9 more than 3% by weight. If it exceeds this, the effect is the same or may even be the reverse effect. Normally, 0.1 ~ 1% by weight is preferred. The amount of calcium sulphonate which is component (D) in the grease may be made not more than 3% by weight. If it exceeds this, the effect is the same or may even be the reverse effect. Normally, 0.1 ~ 1% by weight is preferred. In the case where a zinc dithiophosphate which is component (E) is included in addition to the aforementioned components (A) + (B) + (C) + (D), even if the blended amount of each of components (A), (B), (C) and (D) is reduced as much as possible, excellent wear resistance and anti-flaking performance can be obtained. The amount of this zinc dithiophosphate which is component (E) in the grease should be made not more than 3% by weight. If it exceeds this, the effect is the same or may even be the reverse effect. Normally, an excellent effect may be expected if it is made to be co-present preferably in the amount of 0.5 ~ 1% by weight. It is possible at the same time to incorporate as appropriate into this grease composition for constant velocity joints, in addition to the aforementioned components, anti-oxidants, rust preventatives, extreme pressure agents anti-wear agents and other additives. Examples The undermentioned materials were prepared in order to make the examples and comparative examples. 1. Diurea grease The diurea grease was obtained by reacting 295.2 g diphenylmethane-4,4'-diisocyanate and 304.8 g octylamine WO2007/129775 PCT/JP2007/059992 10 in 5400 g of a refined mineral oil with a kinetic viscosity at 1000C of approximately 15 mm 2 /s and evenly dispersing the diurea compound produced. The content of the diurea compound was 10% by weight. The penetration of this diurea grease (250C, 60W) (JIS K2220) was 283. 2. Tetraurea grease The tetraurea grease was obtained by reacting 382.7 g diphenylmethane-4,4'-diisocyanate, 411.4 g octylamine and 46 g ethylenediamine in 5160 g of a refined mineral oil with a kinetic viscosity at 1000C of approximately 15 mm 2 /s and evenly dispersing the tetraurea compound produced. The content of the tetraurea compound was 14% by weight. The penetration of this tetraurea grease (250C, 60W) (JIS K2220) was 285. 3. Molybdenum dialkyl dithiocarbamate (MoDTC): "Sakuralube 600" (trade name, made by Asahi Denka Kogyo Ltd.) was used. 4. Molybdenum dithiophosphate (MoDTP): 4-1. MoDTP (1) : "Sakuralube 300" (trade name, made by Asahi Denka Kogyo Ltd.) was used. 4-2. MoDTP (2) : "Molyvan L" (trade name, made by Vanderbilt Ltd.) was used. 5. 2-(4-morpholinyldithio)benzothiazole 6. Zinc dithiophosphate (ZnDTP) : 6-1. ZnDTP (1) : "Lubrizol 1395" (trade name, made by Lubrizol Ltd.) was used. 6-2. ZnDTP (2) : "Lubrizol 1371" (trade name, made by Lubrizol Ltd.) was used. 7. Calcium sulphonate: Calcium salt of petroleum sulphonic acid. Examples I - 10 Using the aforementioned materials, and on the basis of the materials and blends shown in Tables 1 and 2, each WO2007/129775 PCT/JP2007/059992 11 material was added to the diurea grease or tetraurea grease, and after mixing and kneading in a three-roll mill and finishing to a uniform consistency, the constant velocity joint greases of Examples 1 ~ 10 were obtained. Comparative Examples 1 ~ 10 Using the aforementioned materials, and on the basis of the materials and blends shown in Tables 3 and 4, each material was added to the diurea grease or tetraurea grease in the same way as for the aforementioned Examples, and after mixing and kneading in a three-roll mill and finishing to a uniform consistency, the constant velocity joint greases of Comparative Examples 1 - 10 were obtained. Evaluation tests The following tests were carried out in order to evaluate the performance of the constant velocity joint greases of the examples and comparative examples. 1. Wear resistance tests (wear resistance tests using an SRV test rig) Test method: in accordance with ASTM D5707 Test conditions: Load 300 N SFrequency 50 Hz * Stroke 2.7 mm STemperature 500C STest time 960 min Evaluation criterion: Depth of wear of test specimen disk (Pm) 2. Tests of anti-flaking performance (actual durability test) Test method: A Birfield-type fixed joint (BJ) and a double offset plunging-type joint (DOJ) were packed with the test specimens, and their anti-flaking performance was evaluated by means of an actual test rig.
WO2007/129775 PCT/JP2007/059992 12 Test conditions: Speed 500 rpm SAngle 6 degrees STorque 600 N - m STest time 300 hr Degree of joint flaking (evaluation): (0)Very good O Good A Rather poor 3. The results of the aforementioned tests are shown in Tables 1 ~ 4. In the case of Comparative Examples 1 ~ 4 and 6 ~ 9, since the results of the durability tests were "rather poor", the wear resistance test using the SRV test rig was omitted and not carried out. Evaluation and Discussion As is clear from the examples shown in Tables 1 and 2, all the constant velocity joint greases of the Examples had a low degree of wear and excellent wear resistance in the wear resistance tests using an SRV test rig. In addition, both the BJ and DOJ in the durability tests obtained ratings as "very good" or "good", and excellent results were also obtained in respect of anti flaking performance. Also, as shown in Examples 4, 5, 9 and 10, if a ZnDTP is also used, satisfactory test results can be obtained while reducing the total amount of the additives. On the other hand, as is clear from the Comparative Examples shown in Tables 3 and 4, in the case of Comparative Examples 1 ~ 4 and 6 - 9, both the BJ and DOJ were "rather poor" in the durability tests, and satisfactory results were not obtained in respect of anti-flaking performance. In the case of Comparative Examples 5 and 10, satisfactory results were exhibited for the BJ and DOJ in WO2007/129775 13 PCT/JP2007/059992 the durability tests, and anti-flaking performance was good, but wear resistance was as much as some seven times worse than in the aforementioned Examples and these results would not sustain a practical application.
WO 2007/129775 PCT/JP2007/059992 14 U-) LO 0 LO ') CD 0 H H ) CD 0 0 H3 H C) H-- HH 0 0') N 7-1 H H U) CN NY H~ (N H HwD ) H 0 N 4J 0-H Q)i -Q 4 00 U) Q) .0 4-)) (1) mI Q) ) -H l 1-- 0 -) ci) H0( (0 -H - -)\.> H N\ 04 l CN Ul) 4-J Cl) 4- 04-~C) H 4- 4-J C) 4 a4 a 4 (4 Q ) -H ~~~ pi P- - Ei I E E-q 4 H -1) -H EH l u 0o m 0 H0 0 0 1 m o~( 0i H H Z N ANl N-Z u C:)C) Cl) H ) U) P 04) WO 2007/129775 PCT/JP2007/059992 15 CDC Lfl LO) LO U) If) oQ m a 0 o 555555 0 LO H H 0 0 0 U00 0 0 0 H~ CCD H N Cd4 -H r 0 C N 0 o -) -)H Q)Q) J Cd 4-) U) ) -H0 0 U Cd ~ -]>1 4 4-J -H Cd Cd H P - 4 H- (V 0 0 H o H (N C/H N U) * Cd ~ 0 S ~ U) H H-- 0 04~C H
U)
WO02007/129775 -- - -PTP20059992 Q u) 0 U) 0 0 w) N QC 4J C a) I F D U) N C) 4J C (N mM C 0 a) Ln MCD 0 a) a) H N Cd4 -H N Fz) 0 a4 4ia) I-D 0 U) -H::) a1) p >1 a)0 U) Cd4 -H 4- - o Hs \o> H 04 U) 4 a) 0 U) H 4 ) U a-' a4 4() -H a) w l -H- H- 4-) H H H U dC H 0 0 0 I ri C 0 d H Z Z N C ~ N ErH Cr) 0 a) -H Cd~- :-ITS dUO 0 U) Uo 0 w) a) C) H P WO02007/129775- - PCT/JP2007/059992 H (Y 0 O m CN rlH HZ < Cl) co C 0 0) (N HZ< Cd C') m CD 0 a) C3) n Cd4 0 00 4-)i 0 Q) N 4-4 0 -4 Cd- 4-Cd3 a) -HCd00l Ci) Z3 Q' 0I P d0 H1 H (N Q1 H 4NC)-) Cd 0 U)i W Cd1 P- I- E- -1 E-i -H H -I CD -H E-4 Q 02 0 ro00 0 dC H OI I I H 4--- > H 0 0 0 ro Cd 0 z H F4 Z Z Z (N N N O - o() r r- 4 (a Cd UOT4Tsodwoo CO) 04i - -1 S C) Ci) 0Cd C 0 -u-
Claims (3)
1. Grease composition for use in constant velocity joints, wherein a urea grease constituted from a base oil and a urea compound is blended with: (A) a molybdenum dialkyldithiocarbamate as represented by the undermentioned formula (I) R S O S O S R N-C Mo Mo C-N R S S S, \R (where R denotes an alkyl group of 1 - 24 carbons) and (B) at least one kind of a molybdenum dialkyldithiophosphate or a molybdenum diaryldithiophosphate as represented by the undermentioned formula (II) RO S O S 0 S OR IP Z \/P\ s-k P Mo Mo P Ro s s s OR ( ) (where R is a primary or secondary alkyl group or an aryl group), the blended amount of (A) and (B) being not more than 10% by weight, and (C) not more than 3% by weight of 2-(4 morpholinyldithio)benzothiazole as represented by the undermentioned formula (III) N CH2 -CH C - S -N O ( a s CH2 - CHZ WO 2007/129775 PCT/JP2007/059992 19 and (D) not more than 3% by weight of a calcium sulphonate.
2. A grease composition for use in constant velocity joints in accordance with Claim 1 characterised in that at least one kind of a zinc dialkyldithiophosphate or a zinc diaryldithiophosphate as represented by the undermentioned formula IV Reo .. S S OR' P Zn P R'O S S OR! (where R' is a primary or secondary alky group or an aryl group) is further incorporated in the amount of not more than 3% by weight.
3. Use of the grease composition according to claim 1 or 2 in constant velocity joints.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006131320A JP5379343B2 (en) | 2006-05-10 | 2006-05-10 | Grease composition for constant velocity joints |
JP2006-131320 | 2006-05-10 | ||
PCT/JP2007/059992 WO2007129775A1 (en) | 2006-05-10 | 2007-05-09 | Grease composition for constant velocity joints |
Publications (1)
Publication Number | Publication Date |
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AU2007246315A1 true AU2007246315A1 (en) | 2007-11-15 |
Family
ID=38667878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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AU2007246315A Abandoned AU2007246315A1 (en) | 2006-05-10 | 2007-05-09 | Grease composition for constant velocity joints |
Country Status (9)
Country | Link |
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US (1) | US20090176671A1 (en) |
EP (1) | EP2054491A4 (en) |
JP (1) | JP5379343B2 (en) |
KR (1) | KR20090012207A (en) |
CN (1) | CN101432408B (en) |
AU (1) | AU2007246315A1 (en) |
BR (1) | BRPI0711343A2 (en) |
MX (1) | MX2008014236A (en) |
WO (1) | WO2007129775A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008063491A (en) * | 2006-09-08 | 2008-03-21 | Showa Shell Sekiyu Kk | Lubricating grease composition |
JP6348374B2 (en) * | 2014-08-25 | 2018-06-27 | シェルルブリカンツジャパン株式会社 | Grease composition |
ES2703349T3 (en) * | 2015-03-31 | 2019-03-08 | Gkn Driveline Int Gmbh | Grease composition for use in constant velocity joints |
JP6480785B2 (en) * | 2015-04-03 | 2019-03-13 | Ntn株式会社 | Grease composition |
WO2021021888A1 (en) | 2019-07-29 | 2021-02-04 | Ecolab USA, Inc. | Oil soluble molybdenum complexes as high temperature fouling inhibitors |
WO2021021891A1 (en) | 2019-07-29 | 2021-02-04 | Ecolab Usa Inc. | Oil soluble molybdenum complexes for inhibiting high temperature corrosion and related applications in petroleum refineries |
KR20230043861A (en) * | 2020-07-29 | 2023-03-31 | 에코랍 유에스에이 인코퍼레이티드 | Phosphorus-free oil-soluble molybdenum complexes for high-temperature naphthenic acid corrosion inhibition |
CN116157494A (en) | 2020-07-29 | 2023-05-23 | 埃科莱布美国股份有限公司 | Phosphorus-free oil-soluble molybdenum complexes as high temperature scale inhibitors |
EP4253507A4 (en) * | 2020-11-26 | 2024-04-17 | Kyodo Yushi Co., Ltd. | Grease composition for constant-velocity joint |
WO2023224006A1 (en) * | 2022-05-16 | 2023-11-23 | 協同油脂株式会社 | Grease composition for constant-velocity joint and constant-velocity joint hermetically filled therewith |
KR102662782B1 (en) | 2023-06-13 | 2024-05-03 | 주식회사 라노스 | ceramic table with howling preventing function |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5861189A (en) * | 1981-10-07 | 1983-04-12 | Hitachi Ltd | Lubricant composition for plastic working |
JPS6346299A (en) * | 1986-01-16 | 1988-02-27 | Ntn Toyo Bearing Co Ltd | Grease for constant speed joint |
JP2919614B2 (en) * | 1989-12-27 | 1999-07-12 | 日産自動車株式会社 | Grease for constant velocity joints |
DE69004550T2 (en) * | 1989-12-27 | 1994-05-11 | Nissan Motor | Grease for homokinetic coupling. |
DE4442229A1 (en) * | 1994-11-28 | 1996-05-30 | Hoechst Schering Agrevo Gmbh | Alkylidene hydrazinophenylsulfonylureas, process for their preparation and their use as herbicides and plant growth regulators |
DE19681044B4 (en) * | 1995-10-23 | 2008-08-28 | Nsk Ltd. | Lubricant composition and its use |
JP3988897B2 (en) * | 1996-06-07 | 2007-10-10 | 協同油脂株式会社 | Grease composition for constant velocity joints |
JP3687708B2 (en) * | 1996-11-11 | 2005-08-24 | 日本精工株式会社 | Grease composition for rolling device |
JP2000303087A (en) * | 1999-04-21 | 2000-10-31 | Showa Shell Sekiyu Kk | Grease composition for constant-velocity joint |
JP4248688B2 (en) * | 1999-06-29 | 2009-04-02 | 協同油脂株式会社 | Grease composition for constant velocity joints |
JP2001304371A (en) * | 2000-04-21 | 2001-10-31 | Ntn Corp | Ball screw |
-
2006
- 2006-05-10 JP JP2006131320A patent/JP5379343B2/en active Active
-
2007
- 2007-05-09 KR KR1020087021217A patent/KR20090012207A/en not_active Application Discontinuation
- 2007-05-09 WO PCT/JP2007/059992 patent/WO2007129775A1/en active Application Filing
- 2007-05-09 BR BRPI0711343-9A patent/BRPI0711343A2/en not_active Application Discontinuation
- 2007-05-09 CN CN2007800141510A patent/CN101432408B/en active Active
- 2007-05-09 MX MX2008014236A patent/MX2008014236A/en active IP Right Grant
- 2007-05-09 EP EP07743427A patent/EP2054491A4/en not_active Ceased
- 2007-05-09 US US12/296,816 patent/US20090176671A1/en not_active Abandoned
- 2007-05-09 AU AU2007246315A patent/AU2007246315A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO2007129775A1 (en) | 2007-11-15 |
KR20090012207A (en) | 2009-02-02 |
JP2007302761A (en) | 2007-11-22 |
EP2054491A4 (en) | 2011-01-12 |
JP5379343B2 (en) | 2013-12-25 |
MX2008014236A (en) | 2008-11-14 |
CN101432408B (en) | 2012-04-04 |
US20090176671A1 (en) | 2009-07-09 |
BRPI0711343A2 (en) | 2011-08-30 |
CN101432408A (en) | 2009-05-13 |
EP2054491A1 (en) | 2009-05-06 |
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