EP0286996A2 - Composition lubrifiante - Google Patents

Composition lubrifiante Download PDF

Info

Publication number: EP0286996A2
Authority: EP; European Patent Office
Prior art keywords: acid esters; oil; composition; acid; lubricating oil
Prior art date: 1987-04-11
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

EP88105669A

Other languages

German (de)

English (en)

Other versions

EP0286996A3 (en

EP0286996B2 (fr

EP0286996B1 (fr

Inventor

Dasai Masashi

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.)

Idemitsu Kosan Co Ltd

Original Assignee

Idemitsu Kosan Co Ltd

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.)

1987-04-11

Filing date

1988-04-09

Publication date

1988-10-19

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=13928707&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0286996(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1988-04-09 Application filed by Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd

1988-10-19 Publication of EP0286996A2 publication Critical patent/EP0286996A2/fr

1989-01-18 Publication of EP0286996A3 publication Critical patent/EP0286996A3/en

1992-08-12 Application granted granted Critical

1992-08-12 Publication of EP0286996B1 publication Critical patent/EP0286996B1/fr

1999-12-08 Publication of EP0286996B2 publication Critical patent/EP0286996B2/fr

2008-04-09 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/02—Well-defined hydrocarbons
- C10M105/04—Well-defined hydrocarbons aliphatic
- 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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
- 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
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
- C10M101/02—Petroleum fractions
- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/02—Well-defined hydrocarbons
- C10M105/06—Well-defined hydrocarbons aromatic
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
- C10M107/08—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing butene
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- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/04—Hydroxy compounds
- C10M129/06—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/26—Carboxylic acids; Salts thereof
- C10M129/28—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M129/38—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
- C10M129/40—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms monocarboxylic
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- C10M129/42—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms polycarboxylic
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- C10M137/04—Phosphate esters
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- C10M137/04—Phosphate esters
- C10M137/08—Ammonium or amine salts
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Definitions

the present invention relates to a lubricating oil composition and more particularly to a lubricating oil composition which is excellent in frictional characteristics, is decreased in changes with time of the frictional characteristics and further is excellent in stability against oxidation or oxidation stability, and thus which is useful as a lubricating oil for use in various parts such as an automatic transmission, a continuously variable transmission, a brake of a tractor, a power steering and so forth.
a lubricating oil to be used in parts including a wet clutch or a wet brake of an automatic transmission, a continuously variable transmission, a tractor and so forth is required to have such properties that frictional characteristics, oxidation stability, corrosion resistance and rust resistance are good, and transmission torque is large.
An especially important requirement is that the ratio of coefficient of static friction to coefficient of kinematic friction as a measure of frictional characteristics is small and further that the change with time of the above ratio is small.
a lubricating oil having a high coefficient of static friction and good in transmission torque has heretofore been known.
This lubricating oil has disadvantages in that frictional characteristics are not sufficiently satisfactory and shift shock is undesirably big.
the present invention is intended to overcome the above problems and an object of the present invention is to provide a lubricating oil composition which is decreased in shift shock, is great in transmission torque, and further has a sufficiently high corrosion-preventing ability, and thus which is suitable for use in lubrication of an automatic transmission and so forth.
the object can be attained by compounding a specified proportion of a friction modifier to a base oil having specified properties.
the present invention relates to a lubricating oil composition
a lubricating oil composition comprising:
the base oil as the component (A) of the present composition is an oil having a naphthene content (% C N ) of at least 30%, preferably 32 to 70%, an aromatic content (%C A ) of not more than 2%, preferably not more than 1%, and a kinematic viscosity at 100°C of 1.5 to 30 cSt, preferably 2 to 20 cSt. If the naphthene content is less than 30%, frictional characteristics are reduced. If the aromatic content is more than 2%, oxidation stability is poor and the change with time is undesirably large.
the kinematic viscosity at 100°C is less than 1.5 cSt, the evaporation loss is undesirably large while on the other hand if it is more than 30 cSt, the power loss due to viscosity resistance is undesirably too large.
the base oil of the component (A) prefferably has such characteristics as required for the usual lubricating oil, for example, (1) proper viscosity characteristics, (2) good stability against oxidation, (3) good detergency and dispersancy, (4) good rust resistance and corrosion resistance, (5) good low temperature fluidity, and so forth.
the base oil it is more preferred for the base oil to have a viscosity index of at least 75, particularly at least 80, a pour point of not more than -10°C, particularly not more than -20°C, most preferably not more than -30°C, and a total acid value of 0.1 mg KOH/g.
various mineral oils and synthetic oils can be used as long as they have the above specified properties.
Representative examples of the mineral oil which can be used as the base oil of the component (A) include a purified oil which is obtained by purifying a distillate oil by the usual method, said distillate oil having been obtained by atmospheric distillation of a paraffin base crude oil or an intermediate base crude oil, or by vacuum distillation of a residual oil resulting from the atmospheric distillation, and a deep dewaxing oil which is obtained by subjecting the above purified oil to deep dewaxing treatment.
the process for purification of the distillate oil is not critical, and various methods can be employed.
the distillate oil is purified by applying such treatments as (a) hydrogenation, (b) dewaxing (solvent dewaxing or hydrogenation dewaxing), (c) solvent extraction, (d) alkali distillation or sulfuric acid treatment, and (e) clay filtration, alone or in combination with one another. It is also effective to apply the same treatment repeatedly at multi-stages.
a mineral oil obtained by deep dewaxing i.e., deep dewaxed oil is particularly preferred as the base oil of the component (A).
This deep dewaxing is carried out by solvent dewaxing under severe conditions, catalytic hydrogenation dewaxing using a Zeolite catalyst, and so forth.
ususl synthetic oils such as alkylbenzene, polybutene and poly( ⁇ -olefin), a synthetic oil containing saturated hydrocarbons having fused rings and/or non-fused rings such as 1-(1-decalyl)-1-cyclohexylethane or mixtures thereof can be used as the base oil of the component (A).
the friction modifier as the component (B) of the present composition is added to the base oil as the component (A) in a proportion of 0.01 to 5% by weight, preferably 0.1 to 2% by weight based on the total weight of the composition. If the proportion of the friction modifier is less than 0.01% by weight, its addition is not effective. On the other hand, if it is more than 5% by weight, oxidation stability is undesirably reduced.
friction modifier which is used as the component (B) of the present composition
compounds commonly called an oiliness agent, a friction preventing agent, an extreme pressure agent and so forth can be used.
Preferred examples of such friction modifiers include phosphoric acid esters, phosphorous acid esters, amine salts of phosphoric acid esters, amine salts of phosphorous acid esters, sorbitan fatty acid esters, pentaerythritol fatty acid esters, glycerine fatty acid esters, trimethylolpropane fatty acid esters, glycol fatty acid esters, carboxylic acids, carboxylic acid amides, carboxylic acid esters, metal salts of carboxylic acids, fats and oils, higher alcohols, and sulfur-containing compounds. These compounds can be used alone or in combination with one another.
R1 and R2 may be the same or different and are each an alkyl group having 4 to 30 carbon atoms, an aryl group, or an alkyl-substituted aryl group.
phosphoric acid esters and phosphorous acid esters include butylacid phosphate, 2-ethylhexylacid phosphate, laurylacid phosphate, oleylacid phosphate, stearylacid phosphate, dibutylhydrogen phosphite, dilaurylhydrogen phosphite, dioleylhydrogen phosphite, distearylhydrogen phosphite, diphenylhydrogen phosphite and the like.
the amine salts of phosphoric acid esters and phosphorous acid esters include the oleylamine salts, coconut amine salts, beef tallow amine salts of the above phosphoric acid esters and phosphorous acid esters.
sorbitan fatty acid esters include sorbitan monolaurate, sorbiton monooleate, sorbitan monostearate, sorbitan sesqueoleate, sorbitan dioleate and mixtures thereof.
pentaerythritol fatty acid esters include the monoesters, diesters or triesters of pentaerythritol or dipentaerythritol and fatty acids such as capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linolic acid and behenic acid, and mixtures thereof.
glycerine fatty acid esters include oleic monoglyceride, stearic monoglyceride, oleic diglyceride and mixtures thereof.
trimethylolpropane fatty acid esters include the monoesters or diesters of trimethylpropane and fatty acids such as capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linolic acid and behenic acid, and mixtures thereof.
glycol fatty acid esters include the monoesters of propylene glycol, trimethylene glycol, 1,4-butanediol or neopentyl glycol and fatty acids such as capric acid, lauric acid, palmitic acid, myristic acid, stearic acid, oleic acid, linolic acid and behenic acid, and mixtures thereof.
carboxylic acids aliphatic carboxylic acids, divalent carboxylic acids (dibasic acids) and aromatic carboxylic acids can be used.
the aliphatic carboxylic acids have 8 to 30 carbon atoms and may be saturated or unsaturated.
aliphatic carboxylic acid includes pelargonic acid, lauric acid, tridecanic acid, myristic acid, palmitic acid, stearic acid, eicosanic acid, behenic acid, triacontanoic acid, undecylenic acid, oleic acid, linolic acid, linoleic acid, erucic acid, and oils and fats fatty acids (e.g., coconut oil fatty acid, palm kernel oil fatty acid and the like).
oils and fats fatty acids e.g., coconut oil fatty acid, palm kernel oil fatty acid and the like.
divalent carboxylic acid examples include octadecylsuccinic acid, octadecenylsuccinic acid, polybutenylsuccinic acid, adipic acid, azelaic acid, sebacic acid, dodecane diacid and the like.
the aromatic carboxylic acid includes salicylic acid and the like.
carboxylic acid amide various compounds can be used.
carboxylic acids as described above and amine compounds e.g., diethylenetriamine, triethylenetetramine, tetraethylenepentamine, hexaethylenepentamine, heptaethyleneoctamine, tetrapropylenepentamine, hexabutyleneheptamine, and alkanolamines such as monoethanolamine, diethanolamine and the like
amine compounds e.g., diethylenetriamine, triethylenetetramine, tetraethylenepentamine, hexaethylenepentamine, heptaethyleneoctamine, tetrapropylenepentamine, hexabutyleneheptamine, and alkanolamines such as monoethanolamine, diethanolamine and the like
alkanolamines such as monoethanolamine, diethanolamine and the like
Carboxylic acid esters include aliphatic carboxylic acid esters and dicarboxylic acid esters (dibasic acid esters).
the alkyl e.g., methyl, ethyl, propyl, butyl, octyl, lauryl, and oleyl
the divalent carboxylic acid esters include the monoalkyl esters or glycol (e.g., propylene glycol) esters of divalent carboxylic acids as described above.
carboxylic acid metal salts zinc laurate, zinc oleate, zinc stearate, zinc salt of coconut fatty acid, aluminum stearate, magnesium salicylate and the like can be used.
both animal oils and vegetable oils can be used.
animal oils include lard, beef tallow, fish oil and the like.
vegetable oils include soy bean oil, rapeseed oil, rice bran oil, palm oil, palm kernel oil, coconut oil and the like.
octyl alcohol lauryl alcohol, myristyl alcohol, oleyl alcohol, stearyl alcohol and the like.
sulfur-containing compounds sulfurized oil, the reaction product of phosphorous sulfide and pinene, and the like can be used.
the above compounds can be used as the component (B), friction modifier, of the composition of the present invention.
phosphoric acid esters, phosphorous acid esters or their amine salts, carboxylic acid amides, glycerine fatty acid esters, sorbitan fatty acid esters, carboxylic acid metal salts, dicarboxylic acid esters (dibasic acid esters) and mixtures comprising two or more thereof are preferred.
composition of the present invention is obtained by adding a friction modifier as the component (B) to a base oil as the component (A). If desired, a viscosity index improver, an antioxidant, a detergent dispersant and so forth can be added to the composition of the present invention.
the type of the viscosity index improver is not critical.
polymethacrylate, polyisobutene, polyalkylstyrene, an ethylene-propylene copolymer and so forth can be used.
polymethacrylate having a molecular weight of not more than 100,000, preferably not more than 50,000, which is excellent in shear stability and is able to prevent changes in viscosity for a long time is particularly suitable.
the amount of the viscosity index improver added can be determined appropriately; usually, it is 0.5 to 15% by weight, preferably 2 to 10% by weight based on the total weight of the composition.
antioxidant compounds commonly used, such as phenol-based compounds, amine-based compounds, zinc dithiophosphate and the like can be used. Representative examples are 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-ethylphenol, 4,4 ⁇ -methylenebis(2,6-di-tert-butylphenol), phenyl- ⁇ -naphthylamine, dialkyldiphenylamine, zinc di-2-ethylhexyldithiophosphate, zinc diamyldithiocarbamate, pinene pentasulfide and the like.
the amount of the antioxidant added is 0.01 to 2% by weight, preferably 0.05 to 1% by weight based on the total weight of the composition.
an ashless detergent, a metal detergent and the like can be used.
a boron-containing ashless detergent can be used. Specifically alkenylsuccinic acid imide, sulfonates, phenates and the like are preferred. Examples are polybutenylsuccinic acid imide, calcium sulfonate, barium sulfonate, calcium sulfinate, barium sulfinate, calcium salicynate and the like.
the amount of the detergent dispersant added is 0.1 to 10% by weight, preferably 0.5 to 5% by weight based on the total weight of the composition.
a corrosion preventing agent e.g., a rubber swelling agent, a defoaming agent and the like can be added to the composition of the present invention.
initial frictional characteristics are good, that is, the ratio of coefficient of static friction to coefficient of kinematic friction is small, and the shock due to speed change is small. Changes with time of the frictional characteristics are small. Furthermore, the lubricating oil composition of the present invention is excellent in oxidation stability and corrosion resistance. Thus the lubricating oil composition of the present invention is suitable for miniaturization of a transmission and so forth.
the lubricating oil composition of the present invention is quite useful as a lubricating oil for use in an automatic transmission or a stepless transmission, or as a lubricating oil for use in parts including a wet clutch or a wet brake of an agricultural tractor and the like.
lubricating oil composition of the present invention having characteristics as described above is useful as a lubricating oil to be used in a shock absorber, a power steering, an oil suspension and further in various construction machines and so forth.
Base Oils A to E shown below were used as the base oil.
To 89.3% by weight of each of Base Oils A to E were added 4.0% by weight of polymethyl methacrylate (weight average molecular weight: 42,000), 0.5% by weight of 2,6-di-tert-butyl-4-methylphenol, 5.0% by weight of polybutenylsuccinic acid imide, 0.1% by weight of an anti-corrosion agent, 1.0% by weight of a rubber swelling agent and 1% by weight of a defoaming agent to prepare Basic Oils A to E.
Viscosity 5.40 cSt (100°C) Viscosity Index: 105 Ring Analysis: %C A 0.1, %C N 38.0 Pour Point: -45°C
Viscosity 5.20 cSt (100°C) Viscosity Index: 105 Ring Analysis: %C A 4.5, %C N 27.0
Viscosity 5.45 cSt (100°C) Viscosity Index: 83 Ring Analysis: %C A 1.5 %C N 50
Base Oil A 40% by weight of Base Oil A, 30% by weight of an oil obtained by subjecting a distillate from an intermediate base oil to hydrogenation treatment, and 30% by weight of 1-(1-decalyl)-1-cyclohexylethane.
Viscosity 5.6 cSt (100°C) Viscosity Index: 120 Ring Analysis: %C A 0.1 or less, %C N 19
Viscosity 5.1 cSt (100°C) Viscosity Index: 60 Ring Analysis: %C A 4,%C N 40
the forced degradation was performed at 150°C for 24 hours according to Oxidation Stability Test of Lubricating Oil for Internal Combustion Engine, JIS K 2514.
the state of corrosion of a copper plate was measured after 3 hours at 100°C according to JIS K 2513.

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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)

EP88105669A 1987-04-11 1988-04-09 Composition lubrifiante Expired - Lifetime EP0286996B2 (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
JP8793387		1987-04-11
JP87933/87		1987-04-11
JP62087933A JP2599383B2 (ja)	1987-04-11	1987-04-11	潤滑油組成物

Publications (4)

Publication Number	Publication Date
EP0286996A2 true EP0286996A2 (fr)	1988-10-19
EP0286996A3 EP0286996A3 (en)	1989-01-18
EP0286996B1 EP0286996B1 (fr)	1992-08-12
EP0286996B2 EP0286996B2 (fr)	1999-12-08

Family

ID=13928707

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP88105669A Expired - Lifetime EP0286996B2 (fr)	1987-04-11	1988-04-09	Composition lubrifiante

Country Status (4)

Country	Link
EP (1)	EP0286996B2 (fr)
JP (1)	JP2599383B2 (fr)
KR (1)	KR930010575B1 (fr)
DE (1)	DE3873587T3 (fr)

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EP0315873B1 (fr) *	1987-11-07	1992-01-02	Idemitsu Kosan Company Limited	Methode pour le travail des métaux
GB2257158A (en) *	1991-06-03	1993-01-06	Ethyl Petroleum Additives Inc	Friction depending lubricants,such as automatic transmission and wet brake fluids
US5198129A (en) *	1989-07-13	1993-03-30	Idemitsu Kosan Co., Ltd.	Lubricating oil composition containing zinc dithiophosphate
EP0573231A1 (fr) *	1992-06-02	1993-12-08	The Lubrizol Corporation	Triglycerides en tant que modificateurs de frictions dans des huiles moteurs pour améliorer l'économie de carburant
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US5391307A (en) *	1989-07-07	1995-02-21	Tonen Corp.	Lubricating oil composition
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GB2285056A (en) *	1991-06-03	1995-06-28	Ethyl Petroleum Additives Inc	Additive for functional fluids
EP0812900A3 (fr) *	1996-06-12	1998-04-15	Idemitsu Kosan Company Limited	Composition d'huile lubrifiante pour transmission automatique
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- 1988-04-04 KR KR8803771A patent/KR930010575B1/ko not_active Expired - Lifetime
- 1988-04-09 EP EP88105669A patent/EP0286996B2/fr not_active Expired - Lifetime
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US5395539A (en) *	1988-10-24	1995-03-07	Exxon Chemical Patents Inc.	Amide containing friction modifier for use in power transmission fluids
US5484543A (en) *	1988-10-24	1996-01-16	Exxon Chemical Patents Inc.	Amide containing friction modifier for use in power transmission fluids
EP0407124A1 (fr) *	1989-07-07	1991-01-09	Tonen Corporation	Composition d'huile lubrifiante
US5391307A (en) *	1989-07-07	1995-02-21	Tonen Corp.	Lubricating oil composition
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US5198129A (en) *	1989-07-13	1993-03-30	Idemitsu Kosan Co., Ltd.	Lubricating oil composition containing zinc dithiophosphate
US5282990A (en) *	1990-07-31	1994-02-01	Exxon Chemical Patents Inc.	Synergistic blend of amine/amide and ester/alcohol friction modifying agents for improved fuel economy of an internal combustion engine
US5817605A (en) *	1991-06-03	1998-10-06	Ethyl Petroleum Additives, Inc.	Automatic transmission and wet brake fluids and additive package therefor
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GB2257158A (en) *	1991-06-03	1993-01-06	Ethyl Petroleum Additives Inc	Friction depending lubricants,such as automatic transmission and wet brake fluids
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US6074995A (en) *	1992-06-02	2000-06-13	The Lubrizol Corporation	Triglycerides as friction modifiers in engine oil for improved fuel economy
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US6613722B1 (en)	1997-03-07	2003-09-02	Exxon Chemical Patents Inc.	Lubricating composition
EP1386982A4 (fr) *	2001-05-09	2007-12-26	Citizen Holdings Co Ltd	Composition d'abaissement de regime de pointe, piece a portion coulissante utilisant une telle composition, et procede d'emmanchement a la presse utilisant ladite composition
WO2004074414A1 (fr) *	2003-02-21	2004-09-02	Nippon Oil Corporation	Preparation d'huile lubrifiante pour la transmission
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EP1657293A3 (fr) *	2004-11-04	2009-09-02	Afton Chemical Corporation	Compositions lubrifiantes comprenant une diarylamine
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US9677026B1 (en)	2016-04-08	2017-06-13	Afton Chemical Corporation	Lubricant additives and lubricant compositions having improved frictional characteristics
US9701921B1 (en)	2016-04-08	2017-07-11	Afton Chemical Corporation	Lubricant additives and lubricant compositions having improved frictional characteristics
US20230174882A1 (en) *	2020-04-24	2023-06-08	Kyb Corporation	Lubricating oil composition and sliding mechanism

Also Published As

Publication number	Publication date
JPS63254196A (ja)	1988-10-20
DE3873587D1 (de)	1992-09-17
DE3873587T2 (de)	1993-05-19
DE3873587T3 (de)	2000-04-27
JP2599383B2 (ja)	1997-04-09
KR880012740A (ko)	1988-11-28
EP0286996A3 (en)	1989-01-18
EP0286996B2 (fr)	1999-12-08
KR930010575B1 (en)	1993-10-28
EP0286996B1 (fr)	1992-08-12

Publication	Publication Date	Title
US5064546A (en)	1991-11-12	Lubricating oil composition
EP0286996B2 (fr)	1999-12-08	Composition lubrifiante
CA2122953C (fr)	2003-08-05	Composition d'huile lubrifiante
EP3052600B1 (fr)	2018-02-21	Compositions à base des éstolides avec des propriétés supérieure dans les lubrifiants
EP0389237B1 (fr)	1993-05-05	Agent modifiant la friction
US4968452A (en)	1990-11-06	Lubricating oil composition of mineral oil and polyester for wet brake or wet clutch
EP0240813B1 (fr)	1993-06-23	Composition d'huile lubrifiante
JPH0141196B2 (fr)	1989-09-04
JPS6366295A (ja)	1988-03-24	潤滑油組成物
JPS60173097A (ja)	1985-09-06	湿式クラッチ用または湿式ブレーキ用潤滑油組成物
WO1996023856A1 (fr)	1996-08-08	Composition d'huile lubrifiante
US4557846A (en)	1985-12-10	Lubricating oil compositions containing hydroxamide compounds as friction reducers
EP0622444A1 (fr)	1994-11-02	Huile lubrifiante pour embrayages ou freins a disque humide
US5607907A (en)	1997-03-04	Multipurpose functional fluid for agricultural machinery or construction machinery
JPH11199888A (ja)	1999-07-27	潤滑油添加剤組成物及び潤滑油組成物
JPH06200274A (ja)	1994-07-19	終減速機用潤滑油組成物
CN110621765A (zh)	2019-12-27	润滑剂组合物用于改善四冲程车辆发动机的性能的用途
JP3089075B2 (ja)	2000-09-18	自動変速機油組成物
JPH0680981A (ja)	1994-03-22	内燃機関用潤滑油組成物
US5190680A (en)	1993-03-02	Friction modifier comprising a long chain succinimide derivative and long chain acid amide
JPS6366299A (ja)	1988-03-24	潤滑油組成物
USRE34459E (en)	1993-11-30	Friction modifier
JPH0395297A (ja)	1991-04-19	潤滑油組成物
JP4095750B2 (ja)	2008-06-04	内燃機関用潤滑油組成物
CA1136606A (fr)	1982-11-30	Economie de carburant dans les moteurs a combustion interne

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