EP0281060A2 - Schmiermittelzusammensetzungen für Reibungsdruckantrieb - Google Patents

Schmiermittelzusammensetzungen für Reibungsdruckantrieb Download PDF

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Publication number
EP0281060A2
EP0281060A2 EP88103032A EP88103032A EP0281060A2 EP 0281060 A2 EP0281060 A2 EP 0281060A2 EP 88103032 A EP88103032 A EP 88103032A EP 88103032 A EP88103032 A EP 88103032A EP 0281060 A2 EP0281060 A2 EP 0281060A2
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EP
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Prior art keywords
composition
ethylene
traction
lubricating oil
olefin
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EP88103032A
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English (en)
French (fr)
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EP0281060A3 (en
EP0281060B1 (de
Inventor
Hitoshi Hata
Hisashi Machida
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Idemitsu Kosan Co Ltd
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Idemitsu Kosan Co Ltd
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    • 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
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    • 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
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
    • C10M2219/066—Thiocarbamic type compounds
    • C—CHEMISTRY; METALLURGY
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    • 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
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • 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
    • C10M2223/041—Triaryl phosphates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/042—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
    • C10M2223/043—Ammonium or amine 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
    • C10M2223/049—Phosphite
    • 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
    • C10M2223/10—Phosphatides, e.g. lecithin, cephalin
    • 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
    • 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
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • 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
    • C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
    • 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
    • C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
    • 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
    • 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
    • C10N2040/08—Hydraulic fluids, e.g. brake-fluids

Definitions

  • the present invention relates to a lubricating oil com­position for traction drive and, more particularly, to a lubricating oil composition which has a high coefficient of traction, shows a limited change in the coefficient of traction at low temperatures, excels in wear resistance, load carrying capacity, thermal and oxidation stability and rust preventing property, and can effectively be used as the lubricating oil for power transmission systems including a traction drive mechanism.
  • traction drives vibration driving device utilizing rolling contact
  • the fluids used for such traction drives are required to have a high coefficient of traction and excel in power transmission efficiency.
  • a main object of the present invention is to provide a lubricating oil composition for traction drive, which has an increased coefficient of traction, shows a limited change in the coefficient of traction at low temperatures, and excels in wear resistance, load carrying capacity, thermal and oxidation stability and rust preventing property.
  • a lubricating oil composition for traction drive which consists essentially of:
  • Figure 1 shows the coefficients of traction measured in Example 1 and Comparative Examples 1 and 2.
  • a base oil containing as the main component a saturated hydrocarbon or hydrocarbons having fused ring and/or nonfused ring is used as the component (A).
  • Various saturated hydrocarbons may be used to this end.
  • the following saturated hydrocarbons containing cyclohexyl group and/or decalyl group may be used.
  • R1 stands for an alkyl group having 10 to 30 carbon atoms.
  • saturated hydrocarbons having fused ring and/or nonfused ring may be used as the component (A) in the present invention. These hydrocarbons may be used alone or in combination of more than 2 kinds.
  • this hydrocarbon should contain the cis-type compound in a larger amount, inter alia, in an amount of 50% or higher.
  • the component (A) is a base oil composed mainly of the aforesaid saturated hydrocarbon or hydrocarbons having fused ring and/or a nonfused ring, which may further contain mineral oils, particularly naphthenic mineral oil and synthetic oils such as polybutene and alkyl­ benzene in proportions of up to 50%.
  • the component (B) used is an ethylene- ⁇ -olefin copolymer having a number-average molecular weight of 800 to 8,000, preferably 1000 to 5,000, and more preferably 2,000 to 4,000. Copolymers having a number-­average molecular weight of below 800 and exceeding 8,000 are unpreferred, since the reduction in the coefficient of traction at low temperatures is increased.
  • the ethylene-­ ⁇ -olefin copolymers should have a kinematic viscosity of 20 to 10,000 cSt, preferably 40 to 8,000 cSt at 100°C.
  • the ethylene- ⁇ -olefin copolymers are oligomers of ethylene with ⁇ -olefins having 3 to 20 carbon atoms, for instance, propylene, 1-butene and 1-decene, and are hydrocarbonic synthetic oils free from any polar group.
  • the ethylene content of the copolymers should preferably 30 to 80 mol %, preferably 50 to 80 mol %.
  • the component (B) is used in a proportion of 1 to 20 weight %, preferably 2 to 10 weight % based on the total amount of the compositions.
  • the propor­tions of the component (B) below 1 weight % and above 20 weight % are unpreferred, since the reduction in the co­efficient of traction at low temperatures is increased.
  • ethylene- ⁇ -olefin copolymers for such ethylene- ⁇ -olefin copolymers, commercially available copolymers may be used.
  • Lucant HC10, HC20, HC40, HC100, HC150, HC600 and HC2000 (tradename; produced by Mitsui Petrochemical Co., Ltd.) may be used alone or in suitable combinations.
  • anti-wear agents are further used as the component (C).
  • the anti-wear agents used may include zinc dithiophosphate; oxymolybdenum organophosphorodithioate sulfide; phosphoric and phosphorous compound such as, phosphate, phosphite and amine salts thereof; and molybdenum dialkyldithiocarbamate; as well as mixtures of sulfurized fats and oils, and phos­phates; mixtures of sulfurized fats and oils, and phosphites; mixtures of sulfurized olefin and phosphates; mixtures of sulfurized olefin and phosphites; and their amine salts known as sulfur-phosphor-based extreme pressure agent (SP-­based extreme pressure agent).
  • SP-­based extreme pressure agent sulfur-phosphor-based extreme pressure agent
  • the zinc dithiophosphates are expressed in terms of the following general formula: wherein R2, R3, R4 and R5 may be identical or different, and stand for a primary alkyl group having 3 to 30 carbon atoms, a secondary alkyl group having 3 to 30 carbon atoms or an alkyl group-substituted aryl group having 6 to 30 carbon atoms.
  • zinc dithiophosphates expressed in terms of the general formula [I], in which the substituents R2 to R5 may be identical or different, may be used alone or in combina­tions.
  • two or more zinc dithiophosphates, in which all the substituents R2 to R5 are identical, are mixed together for use.
  • Zinc dithiophosphates, in which the substituents R2 to R5 are different may also be used alone or in a suitable combination with the zinc dithiophosphates in which R2 to R5 are identical.
  • the zinc dithiophosphate containing a primary alkyl group having 3 to 30 carbon atoms amounts to 1/3, particularly 1/2 (on the weight basis) of all the zinc dithiophosphates.
  • the zinc dithiophosphates in which the zinc dithiophosphate containing a primary alkyl group amounts to at least 1/3 of the total amount of R2 to R5 in all the zinc dithiophosphates, it is possible to improve further anti-­wear property and load carrying capacity and extend fatigure life, thereby enhancing durability.
  • Lubrizol 1097 (R2 to R5 are mainly primary octyl groups)
  • Lubrizol 1395 (R2 to R5 are mainly primary butyl and amyl groups sold by Nippon Lubrizol Co.
  • OLOA 267 (R2 to R5 are mainly primary hexyl groups) sold by Kalonite Chemical Co.
  • Hitec E 682 (R2 to R5 are mainly primary hexyl groups) sold by Nippon Cooper Co.
  • Amoco 198 (R2 to R5 are mainly primary butyl and amyl groups) sold by Amoco Chemical Co. may be used alone or in suitable combinations. It is then preferred that the proportion of the zinc dithiophosphate, in which the sub­stituents R2 to R5 are primary alkyl groups, is adjusted to at least 1/3, preferably at least 1/2.
  • the oxymolybdenum organophosphorodi­thioate sulfides may be prepared by the process disclosed in, e.g., Japanese Patent Publication No. 44-27366.
  • oxymolybdenum diiso­propylphosphorodithioate sulfide oxymolybdenum diisobutyl­phosphorodithioate sulfide, oxymolybdenum di-(2-ethylhexyl)­phosphorodithioate sulfide, oxymolybdenum di-(p-tertiary butylphenyl)phosphorodithioate sulfide and oxymolybdenum di-­(nonylphenyl)phosphorodithioate sulfide.
  • the phosphoric and phosphorous compounds are expressed in terms of the following formulae [III[ or [IV]: wherein R8, R9 and R10 may be identical or different, and stand for a hydrogen atom or an alkyl, aryl or alkyl-sub­stituted aryl group having 4 to 30 carbon atoms.
  • the phosphoric and phosphorous com­pounds may include phosphates and phosphites such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, tri-­(isopropylphenyl)phosphate, butyl acid phosphate, 2-ethyl­hexyl acid phosphate, lauryl acid phosphate, oleyl acid phosphate, stearyl acid phosphate, dibutyl hydrogen phosphite, dioctyl hydrogen phosphite, dilauryl hydrogen phosphite, dioleyl hydrogen phosphite and distearyl hydrogen phosphite, and amine salts such as laurylamine, oleylamine, coconut amine and tallow amine salts thereof.
  • phosphates and phosphites such as triphenyl phosphate, tricresyl phosphate, trixylenyl
  • molybdenum alkyldithiocarbamates expressed in term of the general formula [V] use may be made of those disclosed in Japanese Patent Publication Nos. 49-6362 and 53-31646, and Japanese Patent Application Laid-open Nos. 56-61397 and 56-62894.
  • molybdenum diethyldithiocarbamate sulfide molybdenum dibutyldithiocarbamate sulfide; molybdenum diamyldithio­carbamate sulfide; molybdenum di(2-ethylhexyl)dithiocarbamate sulfide; molybdenum dilauryldithiocarbamate sulfide; molybdenum di(oleyllinoleyl)dithiocarbamate sulfide; molybdenum dicyclohexyldithiocarbamate sulfide; molybdenum dinonylphenyldithiocarbamate sulfide; molybdenum 2-ethylhexyl sulfide, 2-ethylhexyl-o-propoxydithiocarbamate; molybdenum
  • the component(C) as mentioned above should be used in proportions of 0.1 to 10 weight %, preferably 0.5 to 10 weight % based on the total amount of the compositions.
  • a proportion of the component (C) below 0.1 weight % is unpreferred due to an increase in wear losses, whilst a proportion of the component (C) exceeding 10 weight % is undesired due to increased cor­rosion and deteriorated stability.
  • the lubricating oil compositions for traction drive comprises the aforesaid components (A) to (C) and, if required, may contain various additives such as anti-foam agents, oiliness agents, friction modifier, corrosion inhibitors and fatigue life improvers, including rust inhibitor, anti-oxidants, pour-point depres­sants and viscosity index improvers.
  • Various rust preventing agent may be used.
  • anti-oxidants use may be made to phenolic anti-­oxidants such as 2,6-di-t-butyl-p-cresol and 4,4 ⁇ -methylene-­bis-(2,6-di-t-butylphenol) and amine base anti-oxidants such as dioctyldiphenylamine.
  • pour-point depressants or viscosity index improvers reference is made to polymethacrylates having a number-average molecular weight of 10,000 to 100,000 in particular.
  • olefin copolymers such as ethylene/­propylene copolymers and styrene/propylene copolymers may be used to this end.
  • the lubricating oil compositions of the present invention are effectively used in winter and cold districts, since they have a high coefficient of traction and show a limited change in the coefficient of traction at low temperatures.
  • distillation was carried out under reduced pressure to obtain 750 grams of a fraction having a boiling point of 135 to 148°C/0.17 mmHg. As a result of analysis, this fraction was found to be a mixture of 1-(1-tetralyl)-1-­phenylethane with 1-(2-tetralyl)-1-phenylethane.
  • the thus obtained mixture was found to have a specific gravity of 0.94 (15/4°C), a kinematic viscosity of 4.9 cSt (100°C), a refrac­tion index n 20 D of 1.5048 and a cis ratio of 88%.
  • the tests were carried out with a two-cylinder type rolling friction test machine. More specifically, while a cylinder A with a curvature (having a diameter of 52 mm and a radius of curvature of 10 mm) was in contact with a cylinder B with a plane (having a diameter of 52 mm) by 7000 kgf, the cylinder A was rotated at a constant speed (1500 rpm) and the rotational speed of the cylinder B was increased from 1500 rpm. The coefficient of traction was then determined by measuring a traction force occurring between both cylinders at a slip rate of 5%.
  • the two cylinders were formed of bearing steel SUJ-2 and buffed on the surfaces to a surface roughness Rmax of 0.1 micrometer or less with alumina (0.03 micrometers), and were allowed to be in contact with each other at a Hertz contact pressure of 112 kgf/mm2.
  • the results are set out in Table 1.
  • Example 1 was repeated, except that 4 weight % of polybutene (having a number-average molecular weight of 2,300) were used in place of the component (B). With the thus prepared lubricating oil composition, various tests were carried out. The results are set out in Table 1 and Figure 1.
EP88103032A 1987-03-02 1988-03-01 Schmiermittelzusammensetzungen für Reibungsdruckantrieb Expired - Lifetime EP0281060B1 (de)

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JP62047398A JPS63213597A (ja) 1987-03-02 1987-03-02 トラクシヨンドライブ用潤滑油組成物
JP47398/87 1987-03-02

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US5217636A (en) * 1992-03-10 1993-06-08 Albright & Wilson Americas Inc. Lubricating oil viscosity index improver composition
EP0790294A2 (de) * 1996-01-16 1997-08-20 The Lubrizol Corporation Schmierende Zusammensetzungen
EP0949319A2 (de) * 1998-04-08 1999-10-13 Nippon Mitsubishi Oil Corporation Kraftübertragungsflüssigkeit
US6482778B2 (en) * 1999-08-11 2002-11-19 Ethyl Corporation Zinc and phosphorus containing transmission fluids having enhanced performance capabilities
WO2003097773A1 (en) * 2002-05-16 2003-11-27 The Lubrizol Corporation Cyclic oligomer traction fluid
EP1462510A1 (de) * 2003-03-25 2004-09-29 Ethyl Corporation Getriebeschmiermittelzusammensetzung
US6962895B2 (en) 1996-01-16 2005-11-08 The Lubrizol Corporation Lubricating compositions

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JP3811996B2 (ja) * 1996-07-10 2006-08-23 株式会社コスモ総合研究所 トラクションドライブ用流体
US6034040A (en) * 1998-08-03 2000-03-07 Ethyl Corporation Lubricating oil formulations
JP4560157B2 (ja) * 1998-11-13 2010-10-13 出光興産株式会社 潤滑油基油組成物及びその製造方法
US6303548B2 (en) 1998-12-11 2001-10-16 Exxon Research And Engineering Company Partly synthetic multigrade crankcase lubricant
CN111601857B (zh) 2017-12-11 2022-03-04 胜牌许可和知识产权有限公司 氢化α苯乙烯二聚物的可规模化合成
WO2020186139A1 (en) 2019-03-13 2020-09-17 Valvoline Licensing And Intellectual Property Llc Novel traction fluid with improved low temperature properties

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US3903001A (en) * 1971-02-19 1975-09-02 Sun Research Development Lubricant for a controlled-slip differential
EP0088453A1 (de) * 1982-03-10 1983-09-14 UNIROYAL CHEMICAL COMPANY, Inc. Schmiermittelzusammensetzung
EP0208541A2 (de) * 1985-07-08 1987-01-14 Nippon Oil Co. Ltd. Schmiermittelzusammensetzungen
EP0220426A2 (de) * 1985-09-03 1987-05-06 Idemitsu Kosan Company Limited Schmiermittelzusammensetzung für Kraftübertragung
EP0218086B1 (de) * 1985-09-03 1992-11-11 Idemitsu Kosan Company Limited Schmiermittelzusammensetzung für Kraftübertragung

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5217636A (en) * 1992-03-10 1993-06-08 Albright & Wilson Americas Inc. Lubricating oil viscosity index improver composition
EP0790294A2 (de) * 1996-01-16 1997-08-20 The Lubrizol Corporation Schmierende Zusammensetzungen
EP0790294A3 (de) * 1996-01-16 1997-08-27 The Lubrizol Corporation Schmierende Zusammensetzungen
US5883057A (en) * 1996-01-16 1999-03-16 The Lubrizol Corporation Lubricating compositions
US6962895B2 (en) 1996-01-16 2005-11-08 The Lubrizol Corporation Lubricating compositions
EP0949319A2 (de) * 1998-04-08 1999-10-13 Nippon Mitsubishi Oil Corporation Kraftübertragungsflüssigkeit
EP0949319A3 (de) * 1998-04-08 2001-03-21 Nippon Mitsubishi Oil Corporation Kraftübertragungsflüssigkeit
US6482778B2 (en) * 1999-08-11 2002-11-19 Ethyl Corporation Zinc and phosphorus containing transmission fluids having enhanced performance capabilities
WO2003097773A1 (en) * 2002-05-16 2003-11-27 The Lubrizol Corporation Cyclic oligomer traction fluid
US7045488B2 (en) 2002-05-16 2006-05-16 The Lubrizol Corporation Cylic oligomer traction fluid
EP1462510A1 (de) * 2003-03-25 2004-09-29 Ethyl Corporation Getriebeschmiermittelzusammensetzung

Also Published As

Publication number Publication date
EP0281060A3 (en) 1988-12-07
DE3881411T2 (de) 1993-11-18
EP0281060B1 (de) 1993-06-02
DE3881411D1 (de) 1993-07-08
JPS63213597A (ja) 1988-09-06

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