EP0435745A1 - Graisse pour joint homocinétique - Google Patents

Graisse pour joint homocinétique Download PDF

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Publication number
EP0435745A1
EP0435745A1 EP90403671A EP90403671A EP0435745A1 EP 0435745 A1 EP0435745 A1 EP 0435745A1 EP 90403671 A EP90403671 A EP 90403671A EP 90403671 A EP90403671 A EP 90403671A EP 0435745 A1 EP0435745 A1 EP 0435745A1
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EP
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Prior art keywords
weight
grease composition
molybdenum
compound
grease
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.)
Granted
Application number
EP90403671A
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German (de)
English (en)
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EP0435745B1 (fr
Inventor
Saburo Abe
Hideo Room No. 3-202 Asano
Iwao Watanabe
Takehisa C/O Showa Shell Sekiyu K. K. Sakai
Ryo C/O Showa Shell Sekiyu K. K. Hasegawa
Humio C/O Showa Shell Sekiyu K. K. Goto
Hiroshi C/O Showa Shell Sekiyu K. K. Tajiri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Shell Sekiyu KK
Nissan Motor Co Ltd
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Showa Shell Sekiyu KK
Nissan Motor Co Ltd
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Publication of EP0435745A1 publication Critical patent/EP0435745A1/fr
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • 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
    • 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
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
    • 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
    • C10N2040/32—Wires, ropes or cables lubricants
    • 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
    • C10N2040/34—Lubricating-sealants
    • 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
    • C10N2040/36—Release agents or mold release agents
    • 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
    • C10N2040/38—Conveyors or chain belts
    • 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
    • C10N2040/40—Generators or electric motors in oil or gas winning field
    • 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
    • C10N2040/42—Flashing oils or marking oils
    • 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
    • C10N2040/44—Super vacuum or supercritical use
    • 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
    • C10N2040/50—Medical uses

Definitions

  • the present invention relates to greases for constant velocity joints, especially plunging type constant velocity joints.
  • plunging type constant velocity joints include double offset type constant velocity joints (DOJ type) and tripod type constant velocity joints (TJ type).
  • lubricants are filled therein in order to reduce frictional resistance and to improve slidability.
  • Fig. 1 is a graph which shows relation between kinematic viscosity and molecular weight of copolymers.
  • Fig. 2 is a graph which shows relations among speed, axial force and sound pressure in the bodies of cars equipped with DOJ.
  • the present invention relates to a grease composition for constant velocity joints which comprises base greases comprising mineral oils and urea compounds and (1) 0.5 - 5 % by weight of molybdenum dithiocarbamate compounds and 0.5 - 5 % by weight of molybdenum dithiophosphate compounds as organic molybdenum compounds, (2) 0.5 - 10 % by weight of zinc dithiophosphate compounds as extreme pressure agents, and (3) 0.5 - 60 % by weight of copolymers having a molecular weight of 300 - 4,000 and comprising ethylene and branched ⁇ -olefin.
  • the grease of the present invention may further contain antioxidants, oiliness agents, rust preventives and the like.
  • the base oils used in the present invention are mineral oil or synthetic hydrocarbon lubricating oils.
  • thickening agents there may be used urea compounds (diurea compounds) which are superior in heat resistance to metallic soaps such as lithium soap.
  • Organic molybdenum compounds used in the present invention comprise combination of molybdenum dialkyl dithiocarbamates and molybdenum dialkyl dithiophosphates or molybdenum diaryl dithiophosphates.
  • molybdenum dialkyl dithiophosphates and molybdenum diaryl dithiophosphates are represented by the following formula wherein R represents a primary or secondary alkyl group or aryl group.
  • amounts of organic molybdenum compounds are 0.5 - 5 % by weight, respectively and the total amount is 0.5 - 10 % by weight, preferably 2 - 5 % by weight.
  • Zinc compounds as an extreme pressure compound used in the present invention are zinc dialkyl dithiophosphate, zinc dialryl dithiophosphate, or mixtures thereof.
  • the said zinc dialkyl dithiophosphate and zinc diaryl dithiophostate are represented by the following formula wherein R′ represents a primary or secondary alkyl group or aryl group.
  • organic zinc compounds as well as the above organic molybdenum compounds are very effective extreme pressure agents. Addition of too much amount of zinc compounds does not bring about further increase in effect but rather decrease, and hence an amount of the zinc compounds is 0.5 - 10 % by weight, preferably 0.5 - 5 % by weight.
  • copolymers used in the present invention are oligomers of ethylene and branched ⁇ -olefins and are represented by the formula: wherein R represents a C1-C10 alkyl group and x, y and p represent integers of 1-145, 1-95 and 1-60, respectively.
  • the above oligomers are synthetic oils of hydrocarbons having a molecular weight of 300 - 4,000 and free from polar groups and are effective for reducing axial force under low pressure.
  • Addition of copolymers in a too much amount provides no further increase in effect but rather decrease and hence an addition amount is 0.5 - 60 % by weight, preferably 5 - 30 % by weight, more preferably 10 - 30 % by weight.
  • a thorough mixture of a base grease comprising purified mineral oil (same as used in Comparative Example 1) as a base oil (83 % by weight) and a diurea compound (10 % by weight), and an organic molybdenum compound 1 (molybdenum dialkyl(C1-C24) dithiocarbamate (4 % by weight), zinc dialkyl(primary and secondary alkyl) and diaryl dithiophosphate as an extreme pressure agent (2 % by weight) and octyldiphenylamine as an antioxidant (1 % by weight) was processed by a three-roll mill. Properties of the resulting grease composition were measured and the results are shown in Table 1.
  • Grease composition was obtained in the same manner as in Comparative Example 2 except that 2 % by weight of the organic molybdenum compound 1 (molybdenum dialkyl(C1 ⁇ C24 alkyl) dithiocarbamate) and 2 % by weight of a molybdenum compound 2 (molybdenum dialkyl(primary and secondary alkyl) and diaryl dithiophsphate) were used as organic molybdenum compounds. Properties of this composition were measured and the results are shown in Table 1.
  • the organic molybdenum compound 1 molybdenum dialkyl(C1 ⁇ C24 alkyl) dithiocarbamate
  • a molybdenum compound 2 molybdenum dialkyl(primary and secondary alkyl) and diaryl dithiophsphate
  • a base grease comprising 82 % by weight of purified mineral oil (same as used in Comparative Example 1) as a base oil and 10 % by weight of a diurea compound were added 1 % by weight of a copolymer (molecular weight: 3700) of ethylene and branched ⁇ -olefin as oligomers, 2 % by weight of the organic molybdenum compound 1 (same as in Comparative Example 2), 2 % by weight of the organic molybdenum compound 2 (same as in Comparative Example 3), 2 % by weight of zinc dialkyl dithiophosphate as an extreme pressure agent, and 1 % by weight of octyldiphenylamine as an antioxidant. They were well mixed and then processed by a three-roll mill to obtain a grease composition. Properties of this composition measured are shown in Table 1.
  • the oligomers are copolymers of ethylene and branched ⁇ -olefins (molecular weight: 3700); the urea compounds are urea compounds mainly composed of diruea; the organic molybdenum compounds 1 are molybdenum dialkyl dithiocarbamates; the organic molybdenum compounds 2 are molybdenum dialkyl(primary and secondary) and diaryl dithiophosphates; the extreme pressure agents 3 are zinc dialkyl(primary and secondary) and diaryl dithiophosphates; and the anti-oxidants 4 are octyldiphenylamine.
  • Friction coefficient ASTM D2266 (50 kgf x 600 rpm x room temperature x 15 minutes)
  • Table 1 shows that the greases of the present invention have low friction coefficient and provide very low axial force.
  • the greases of the present invention have low friction coefficient, are excellent in reducing axial force, can reduce discomfort for passengers and can provide comfortable driving environment.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)
EP90403671A 1989-12-27 1990-12-19 Graisse pour joint homocinétique Expired - Lifetime EP0435745B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP336702/89 1989-12-27
JP33670289 1989-12-27

Publications (2)

Publication Number Publication Date
EP0435745A1 true EP0435745A1 (fr) 1991-07-03
EP0435745B1 EP0435745B1 (fr) 1993-11-10

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ID=18301917

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EP90403671A Expired - Lifetime EP0435745B1 (fr) 1989-12-27 1990-12-19 Graisse pour joint homocinétique

Country Status (2)

Country Link
EP (1) EP0435745B1 (fr)
DE (1) DE69004550T2 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4204855A1 (de) * 1991-04-01 1992-10-08 Ntn Toyo Bearing Co Ltd Schmierfettmasse
GB2255346A (en) * 1991-04-30 1992-11-04 Ntn Toyo Bearing Co Ltd Grease composition for constant velocity joint
FR2684108A1 (fr) * 1991-11-27 1993-05-28 Mobil Oil France Nouvelle graisse destinee notamment a etre utilisee dans des joints homocinetiques.
EP0566326A1 (fr) * 1992-04-14 1993-10-20 Witco Corporation Lubrifiants, en particulier compositions de graisse lubrifiante pour joints universels homicinétiques
EP0708172A2 (fr) * 1994-10-21 1996-04-24 Kyodo Yushi Co., Ltd. Composition de graisse pour joint homocinétique
WO1996029382A1 (fr) * 1995-03-23 1996-09-26 Exxon Research And Engineering Company Combinaison d'additifs pour pressions extremes, et lubrifiants la contenant
EP0761804A1 (fr) * 1995-08-09 1997-03-12 Asahi Denka Kogyo Kabushiki Kaisha Composition lubrifiante
EP0768367A1 (fr) * 1995-10-12 1997-04-16 Asahi Denka Kogyo Kabushiki Kaisha Composition lubrifiante
EP1046700A3 (fr) * 1999-04-21 2002-02-06 Showa Shell Sekiyu Kabushiki Kaisha Composition de graisse pour joint homocinétique
WO2004053032A1 (fr) * 2002-12-10 2004-06-24 Shell Internationale Research Maatschappij B.V. Composition de graisse d'uree
CN1322104C (zh) * 1999-03-15 2007-06-20 国际壳牌研究有限公司 用于等速万向节的润滑脂组合物
EP2049631A2 (fr) * 2006-08-09 2009-04-22 Chevron Oronite Company LLC Composition d'huile lubrifiante de faible teneur en phosphore limitant la corrosion du plomb
EP2054491A1 (fr) * 2006-05-10 2009-05-06 Showa Shell Sekiyu Kabushiki Kaisha Composition de graisse pour joints homocinétiques
WO2011030315A1 (fr) 2009-09-10 2011-03-17 Total Raffinage Marketing Composition de graisse
US8673829B2 (en) 2008-09-05 2014-03-18 Ntn Corporation Grease composition and grease composition-enclosed rolling bearing and universal joint
WO2016141911A1 (fr) 2015-03-09 2016-09-15 Fuchs Petrolub Se Procédé de fabrication de graisses lubrifiantes épaissies par polyurée, à base de dérivés de lignine, graisses lubrifiantes de ce type et leur utilisation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1723268B (zh) * 2002-12-10 2010-11-24 国际壳牌研究有限公司 脲润滑脂组合物

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185492A (en) * 1986-01-16 1987-07-22 Ntn Toyo Bearing Co Ltd Greases for homokinetic joints incorporating an organic molybdenum compound
US4764293A (en) * 1987-08-28 1988-08-16 Witco Corporation Lubricant compositions
US4840739A (en) * 1987-03-17 1989-06-20 Shin-Etsu Chemical Co., Ltd. Adhesive grease composition comprising a random copolymer of ethylene and an alpha-olefin
WO1990012079A1 (fr) * 1989-03-31 1990-10-18 Amoco Corporation Procede de prevention de feux provoques par de la graisse dans des acieries ainsi que dans d'autres installations de traitement de metaux

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185492A (en) * 1986-01-16 1987-07-22 Ntn Toyo Bearing Co Ltd Greases for homokinetic joints incorporating an organic molybdenum compound
US4840739A (en) * 1987-03-17 1989-06-20 Shin-Etsu Chemical Co., Ltd. Adhesive grease composition comprising a random copolymer of ethylene and an alpha-olefin
US4764293A (en) * 1987-08-28 1988-08-16 Witco Corporation Lubricant compositions
WO1990012079A1 (fr) * 1989-03-31 1990-10-18 Amoco Corporation Procede de prevention de feux provoques par de la graisse dans des acieries ainsi que dans d'autres installations de traitement de metaux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI, accession no. 77-20680y, Derwent Publications Ltd, London, GB; & JP-A-52 016 503 (CHUO YUKA) 07-02-1977 *

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2255103A (en) * 1991-04-01 1992-10-28 Ntn Toyo Bearing Co Ltd Grease composition for constant velocity joint
US5207936A (en) * 1991-04-01 1993-05-04 Ntn Corporation Grease composition for constant velocity joint
GB2255103B (en) * 1991-04-01 1995-03-29 Ntn Toyo Bearing Co Ltd Grease composition for constant velocity joint
DE4204855A1 (de) * 1991-04-01 1992-10-08 Ntn Toyo Bearing Co Ltd Schmierfettmasse
GB2255346A (en) * 1991-04-30 1992-11-04 Ntn Toyo Bearing Co Ltd Grease composition for constant velocity joint
GB2255346B (en) * 1991-04-30 1995-01-04 Ntn Toyo Bearing Co Ltd Grease composition for constant velocity joint
FR2684108A1 (fr) * 1991-11-27 1993-05-28 Mobil Oil France Nouvelle graisse destinee notamment a etre utilisee dans des joints homocinetiques.
WO1993011208A1 (fr) * 1991-11-27 1993-06-10 Mobil Oil Française Nouvelle graisse destinee notamment a etre utilisee dans des joints homocinetiques
EP0566326A1 (fr) * 1992-04-14 1993-10-20 Witco Corporation Lubrifiants, en particulier compositions de graisse lubrifiante pour joints universels homicinétiques
EP0708172A3 (fr) * 1994-10-21 1997-04-09 Kyodo Yushi Composition de graisse pour joint homocinétique
EP0708172A2 (fr) * 1994-10-21 1996-04-24 Kyodo Yushi Co., Ltd. Composition de graisse pour joint homocinétique
WO1996029382A1 (fr) * 1995-03-23 1996-09-26 Exxon Research And Engineering Company Combinaison d'additifs pour pressions extremes, et lubrifiants la contenant
US5858931A (en) * 1995-08-09 1999-01-12 Asahi Denka Kogyo K.K Lubricating composition
EP0761804A1 (fr) * 1995-08-09 1997-03-12 Asahi Denka Kogyo Kabushiki Kaisha Composition lubrifiante
EP0768367A1 (fr) * 1995-10-12 1997-04-16 Asahi Denka Kogyo Kabushiki Kaisha Composition lubrifiante
CN1322104C (zh) * 1999-03-15 2007-06-20 国际壳牌研究有限公司 用于等速万向节的润滑脂组合物
EP1046700A3 (fr) * 1999-04-21 2002-02-06 Showa Shell Sekiyu Kabushiki Kaisha Composition de graisse pour joint homocinétique
WO2004053032A1 (fr) * 2002-12-10 2004-06-24 Shell Internationale Research Maatschappij B.V. Composition de graisse d'uree
AU2003299220B2 (en) * 2002-12-10 2007-03-22 Shell Internationale Research Maatschappij B.V. Urea grease composition
EP2054491A4 (fr) * 2006-05-10 2011-01-12 Showa Shell Sekiyu Composition de graisse pour joints homocinétiques
EP2054491A1 (fr) * 2006-05-10 2009-05-06 Showa Shell Sekiyu Kabushiki Kaisha Composition de graisse pour joints homocinétiques
EP2049631A2 (fr) * 2006-08-09 2009-04-22 Chevron Oronite Company LLC Composition d'huile lubrifiante de faible teneur en phosphore limitant la corrosion du plomb
EP2049631A4 (fr) * 2006-08-09 2011-09-14 Chevron Oronite Co Composition d'huile lubrifiante de faible teneur en phosphore limitant la corrosion du plomb
US8673829B2 (en) 2008-09-05 2014-03-18 Ntn Corporation Grease composition and grease composition-enclosed rolling bearing and universal joint
WO2011030315A1 (fr) 2009-09-10 2011-03-17 Total Raffinage Marketing Composition de graisse
WO2016141911A1 (fr) 2015-03-09 2016-09-15 Fuchs Petrolub Se Procédé de fabrication de graisses lubrifiantes épaissies par polyurée, à base de dérivés de lignine, graisses lubrifiantes de ce type et leur utilisation
DE102015103440A1 (de) 2015-03-09 2016-09-15 Fuchs Petrolub Se Verfahren zur Herstellung von Polyharnstoff-verdickten Schmierfetten auf Basis von Lignin-Derivaten, derartige Schmierfette und deren Verwendung
US10604721B2 (en) 2015-03-09 2020-03-31 Fuchs Petrolub Se Process for the preparation of polyurea-thickened lignin derivative-based lubricating greases, such lubricant greases and use thereof

Also Published As

Publication number Publication date
DE69004550D1 (de) 1993-12-16
DE69004550T2 (de) 1994-05-11
EP0435745B1 (fr) 1993-11-10

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