EP0855437A1 - Schmierölzusammensetzung - Google Patents

Schmierölzusammensetzung Download PDF

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Publication number
EP0855437A1
EP0855437A1 EP96928703A EP96928703A EP0855437A1 EP 0855437 A1 EP0855437 A1 EP 0855437A1 EP 96928703 A EP96928703 A EP 96928703A EP 96928703 A EP96928703 A EP 96928703A EP 0855437 A1 EP0855437 A1 EP 0855437A1
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EP
European Patent Office
Prior art keywords
composition
weight
amount
carbon atoms
alkyl group
Prior art date
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Application number
EP96928703A
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English (en)
French (fr)
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EP0855437A4 (de
Inventor
Satoshi; Tonen Corporation Corporate ASANO
Michiya; Tonen Corporation Corporate YAMADA
Hirotaka; Tonen Corporation Corporate TOMIZAWA
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.)
Tonen General Sekiyu KK
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Tonen Corp
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Priority claimed from JP24550595A external-priority patent/JP3556348B2/ja
Application filed by Tonen Corp filed Critical Tonen Corp
Publication of EP0855437A1 publication Critical patent/EP0855437A1/de
Publication of EP0855437A4 publication Critical patent/EP0855437A4/de
Withdrawn legal-status Critical Current

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    • 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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    • C10M2221/04—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
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    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
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    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
    • C10M2227/065—Organic compounds derived from inorganic acids or metal salts derived from Ti or Zr
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    • C10M2227/066—Organic compounds derived from inorganic acids or metal salts derived from Mo or W
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/02—Bearings
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    • C10N2040/251—Alcohol fueled engines
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    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines
    • C10N2040/28—Rotary engines

Definitions

  • the present invention relates to a novel lubricating oil composition. More specifically, the present invention relates to a lubricating oil composition useful as a lubricating oil for internal-combustion engines, automatic transmissions, dampers and power steerings, particularly useful as a lubricating oil for internal-combustion engines, which composition has excellent antiwear properties and friction reducing properties and can maintain the friction-reducing properties for a prolonged period of time without undergoing deterioration even in the air containing nitrogen oxides gas.
  • Lubricating oils are used for internal-combustion engines, and for driving units and gears such as automatic transmissions, dampers and power steerings in order to ensure smooth operation thereof.
  • lubricating oils for internal-combustion engines not only lubricate various sliding portions such as a contacting surface between a piston ring and a cylinder liner, a bearing for a crank shaft or a connecting rod, and a valve-operating mechanism including a cam and a valve lift, hut also cool the inside of the engines, clean and disperse combustion products, and prevent the rusting and corrosion of the engines.
  • lubricating oils for internal-combustion engines have been required to have a great variety of properties.
  • higher-performance lubricating oils are now required due to the recent trend high-performance in internal-combustion engines such as the trend toward lower rates of fuel consumption, the trend toward high-output and the trend toward severer operating conditions therein.
  • combustion gas generated in an internal-combustion engine partially leaks between a piston and cylinder therein, and comes into a crank case as blowby gas.
  • Such combustion gas contains nitrogen oxides gas in a considerably high concentration. The nitrogen oxides gas deteriorates, along with oxygen contained in the blowby gas, the lubricating oil used for the internal-combustion engine.
  • lubricating oils can ensure the smooth operation of the engines under every condition to prevent the wear and seizure of the engines.
  • the lubricated parts of the engines are, for the most part, under the fluid lubrication condition.
  • a valve-operating system, and the top and bottom dead centers of a piston tend to come under the boundary lubrication condition.
  • Antiwear properties shown under the boundary lubrication condition are generally imparted to lubricating oils by the addition of zinc dithiophosphate.
  • a friction modifier is added to the lubricating oils in order to reduce the friction loss and to decrease the rate of fuel consumption.
  • an organic molybdenum compound, a fatty ester, or an alkylamine is usually used as the friction modifier.
  • An object of the present invention is therefore to provide a lubricating oil composition which can maintain, for a long period of time, the effect of reducing friction caused in engines without being adversely affected by nitrogen oxides gas.
  • the present invention provides (1) a lubricating oil composition comprising a lubricating base oil and the following components.
  • lubricating base oil for use in the lubricating oil composition of the present invention, and any base oil, such as any of mineral oils and synthetic oils, which is commonly used for the conventional lubricating oils can be used.
  • mineral oils examples include raffinates obtained by subjecting raw materials for lubricating oils to solvent refining which is effected by using an aromatic extraction solvent such as phenol or furfural, hydrogenated oils obtained by subjecting raw materials for lubricating oils to hydrogenation treatment which is carried out by using a hydrogenation catalyst such as cobalt or molybdenum supported on a silica-alumina carrier, and lubricating oil fractions obtained by the isomerization of waxes, such as 60 neutral oil, 100 neutral oil, 150 neutral oil, 300 neutral oil, 500 neutral oil and bright stocks.
  • solvent refining which is effected by using an aromatic extraction solvent such as phenol or furfural
  • hydrogenated oils obtained by subjecting raw materials for lubricating oils to hydrogenation treatment which is carried out by using a hydrogenation catalyst such as cobalt or molybdenum supported on a silica-alumina carrier
  • lubricating oil fractions obtained by the isomerization of waxes, such as 60 neutral oil, 100 neutral oil, 150
  • examples of the synthetic oils include poly( ⁇ -olefin) oligomers, polybutene, alkylbenzene, polyol esters, polyglycol esters, esters of dibasic acids, phosphoric esters and silicone oil. These base oils can be used either singly or in combination of two or more. Further, a mixture of mineral oil and synthetic oil can also be used in the present invention.
  • oils whose viscosities at 100°C are in the range of 3 to 20 mm 2 /s are preferable as the base oils for use in the lubricating oil composition of the present invention.
  • hydrocracked oils and wax-isomerized oils which contain 3% by weight or less of aromatics, 50 ppm or less of sulfur and 50 ppm or less of nitrogen are particularly preferred.
  • a compound represented by the following general formula [1] is used as the oxymolybdenum sulfide dithiocarbamate to be incorporated into the lubricating oil composition of the present invention: wherein R 1 , R 2 , R 3 and R 4 , which may be the same or different, each represents an alkyl group having 8 to 18 carbon atoms, and X is sulfur or oxygen.
  • the alkyl group having 8 to 18 carbon atoms, represented by R 1 , R 2 , R 3 or R 4 in the general formula [1] can be either linear or branched.
  • the alkyl group represented by R 1 , R 2 , R 3 or R 4 has 8 to 13 carbon atoms.
  • alkyl group represented by R 1 , R 2 , R 3 or R 4 examples include octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl groups.
  • oxymolybdenum sulfide dithiocarbamates can be used. Further, the oxymolybdenum sulfide dithiocarbamate is incorporated into the composition so that the amount of molybdenum derived from the oxymolybdenum sulfide dithiocarbamate can be from 200 to 2,000 ppm (weight basis), preferably from 300 to 800 ppm (weight basis) of the total weight of the composition.
  • the oxymolybdenum sulfide dithiocarbamate is incorporated into the composition in such an amount that the amount of molybdenum derived from the oxymolybdenum sulfide dithiocarbamate is less than 200 ppm (weight basis) of the total weight of the composition, the effect of improving frictional properties (friction-reducing properties) cannot be fully obtained.
  • the oxymolybdenum sulfide dithiocarbamate is incorporated into the composition in such an amount that the amount of molybdenum derived from the oxymolybdenum sulfide dithiocarbamate is in excess of 2,000 ppm (weight basis) of the total weight of the composition, the effect cannot be enhanced in proportion to such an increased amount of the oxymolybdenum sulfide dithiocarbamate, and sludges or the like tend to be formed.
  • a compound represented by the following general formula [2] is used as the zinc dialkyl dithiophosphate to be incorporated into the lubricating oil composition of the present invention: wherein R 5 , R 6 , R 7 and R 8 , which may be the same or different, represent a primary alkyl group having 1 to 18 carbon atoms.
  • the primary alkyl group represented by R 5 , R 6 , R 7 or R 8 in the general formula [2] can be either linear or branched.
  • Examples of such a primary alkyl group include methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl groups. It is particularly preferable to use, in the lubricating oil composition of the present invention, a zinc dialkyl dithiophosphate having a primary alkyl group containing 3 to 12 carbon atoms.
  • the zinc dialkyl dithiophosphate is incorporated so that the amount of phosphorus derived from the zinc dialkyl dithiophosphate can be from 0.02 to 0.15% by weight, preferably from 0.04 to 0.12% by weight of the total weight of the composition.
  • the zinc dialkyl dithiophosphate is incorporated into the composition in such an amount that the amount of phosphorus derived from the zinc diaikyl dithiophosphate is less than 0.02% by weight of the total weight of the composition, the resulting composition is poor in antiwear properties, and, in addition, cannot show a satisfactorily low coefficient of friction under the operating conditions of high oil temperatures and low rotational speeds.
  • the zinc dialkyl dithiophosphate when the zinc dialkyl dithiophosphate is incorporated into the composition in such an amount that the amount of phosphorus derived from the zinc dialkyl dithiophosphate is in excess of 0.15% by weight of the total weight of the composition, the effect cannot be enhanced in proportion to such an increased amount of the zinc dialkyl dithiophosphate.
  • a compound represented by the following general formula [3] is used as the dialkyl dithiocarbamate to be incorporated into the lubricating oil composition of the present invention: wherein M is zinc, copper or nickel, and R 9 , R 10 , R 11 and R 12 , which may be the same or different, represent an alkyl group having 2 to 18 carbon atoms.
  • the alkyl group having 2 to 18 carbon atoms, represented by R 9 , R 10 , R 11 or R 12 in the general formula [3] can be either linear or branched.
  • Examples of such an alkyl group include ethyl, propyl, butyl, pentyl, hexyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl groups.
  • a compound represented by the following general formula [4] is used as the tetraalkylthiuram disulfide to be incorporated into the lubricating oil composition of the present invention: wherein R 13 , R 14 , R 15 and R 16 , which may be the same or different, represent an alkyl group having 2 to 18 carbon atoms.
  • the alkyl group having 2 to 18 carbon atoms, represented by R 13 , R 14 , R 15 or R 16 in the general formula [4] can be either linear or branched.
  • Examples of such an alkyl group include ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl groups.
  • a compound represented by the following general formula [5] is used as the disulfide to be incorporated into the lubricating oil composition of the present invention: R 17 - S - S R 18 wherein R 17 and R 18 , which may be the same or different, represent an alkyl group having 2 to 18 carbon atoms, or an aryl group.
  • the alkyl group having 2 to 18 carbon atoms, represented by R 17 or R 18 in the general formula [5] can be either linear or branched.
  • Examples of such an alkyl group include ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl groups.
  • examples of the aryl, alkyl aryl or aryl alkyl group having 6 to 18 carbon atoms, represented by R17 or R18 include phenyl, benzyl, phenethyl, methylbenzyl and diphenylmethyl groups.
  • a compound represented by the following general formula [6] is used as the thiadiazole compound having a substituent which contains sulfur, to be incorporated into the lubricating oil composition of the present invention: wherein R 19 and R 20 , which may be the same or different, represent a monovalent group containing 3 to 24 carbon atoms and one or more sulfur atoms.
  • Examples of the monovalent group containing 3 to 24 carbon atoms and one or more sulfur atoms, represented by R 19 or R 20 in the general formula [6] include 5-thianonyl, 2,5-dithiahexyl, 3,4-dithiahexyl, 4,5-dithiahexyl, 3,4,5-trithiaheptyl, 3,4,5,6-tetrathiaoctyl, 5-thia-2-heptenyl, 4-thiacyclohexyl, 1,4-dithianaphthyl, 5-(methylthio)octyl, 4-(ethylthio)-2-pentenyl, 4-(methylthio)cyclohexyl, 4-mercaptophenyl, 4-(methylthio)phenyl and 4-(hexylthio)benzyl groups.
  • particularly preferable groups are those in which 2 to 4 sulfur atoms are sequentially combined in the chain, for instance, 3,4-dithiahexyl group represented by the formula [7], 4,5-dithiahexyl group represented by the formula [8], 3,4,5-trithiaheptyl group represented by the formula [9], and 3,4,5,6-tetrathiaoctyl group represented by the formula [10]: CH 3 CH 2 -S-S-CH 2 CH 2 - CH 3 -S-S-CH 2 CH 2 CH 2 - CH 3 CH 2 -S-S-S-CH 2 CH 2 - CH 3 CH 2 -S-S-S-CH 2 CH 2 - CH 3 CH 2 -S-S-S-CH 2 CH 2 -
  • the olefin sulfide to be incorporated into the lubricating oil composition of the present invention is an olefin sulfide containing 25 to 40% by weight of sulfur, obtained by sulfurizing a polymer of isobutylene or the like.
  • the sulfide of fish oil or whale to be incorporated into the lubricating oil composition of the present invention is one obtained by likewise sulfurizing fish oil or whale oil.
  • the dialkyl dithiocarbamates represented by the general formula [3] the tetraalkylthiuram disulfides represented by the general formula [4]
  • the thiadiazole compounds represented by the general formula [6] the olefin sulfides, the sulfides of fish oil and the sulfides of whale oil can be used either singly or in combination of two or more.
  • These sulfur compounds are incorporated into the composition so that the amount of sulfur derived from the sulfur compounds can be from 0.02 to 0.30% by weight of the total weight of the composition.
  • the sulfur compounds When the sulfur compounds are incorporated into the composition in such an amount that the amount of sulfur derived from the sulfur compounds is less than 0.02% by weight of the total weight of tie composition, the resulting composition cannot fully maintain the friction-reducing properties for a long period of time. On the other hand, when the sulfur compounds are incorporated into the composition in such an amount that the amount of sulfur derived from the sulfur compounds is in excess of 0.30% by weight of the total weight of the composition, the effect cannot be enhanced in proportion to such an increased amount of the sulfur compounds.
  • One, or two or more metallic detergents selected from the group consisting of calcium salicylate, magnesium salicylate, calcium sulfonate, magnesium phosphate and calcium phenate are incorporated into the lubricating oil composition of the present invention.
  • These metallic detergents are incorporated into the composition in an amount of 1 to 10% by weight of the total weight of the composition.
  • the amount of the metallic detergents is less than 1% by weight of the total weight of the composition, cleaning effect cannot be fully obtained.
  • the amount of the metallic detergents is in excess of 10% by weight of the total weight of the composition, the effect cannot be enhanced in proportion to such an increased amount of the metallic detergents, and, instead, the ash content is increased.
  • the total base number of the composition is adjusted to preferably 3 to 10, more preferably 4 to 7.
  • the total base number of the composition can be determined in accordance with JIS K2501.
  • the total base number of the composition can be suitably adjusted by selecting metallic detergents having proper base numbers.
  • boron-containing compound for use in the lubricating oil composition of the present invention include boron-containing succinimides and boron-containing succinates.
  • boron-containing succinimides include those compounds which are represented by the following general formula [11] or [12]: wherein R 21 is a hydrocarbon group having 1 to 50 carbon atoms, R 22 is an alkylene group having 2 to 5 carbon atoms, n is a number of 1 to 10; two R 21 s in the compounds of the general formula [12] may be the same or different and R 22 s in the number of "n" in the general formula [11] or of "n+1" in the general formula [12] may be the same or different; and Z is a boron-containing substituent having such as the following structure:
  • ECA 5025 manufactured by Exxon Chemical Co. Ltd.
  • LUBRIZOL 935" manufactured by THE LUBRIZOL CORP.
  • boron-containing succinates include those compounds which are represented by the following general formula [13]: wherein n is a number of 1 to 20; R 23 is a linear or branched hydrocarbon group having 2 to 18 carbon atoms, which can contain therein an aromatic or double bond; and Y and Z are boron-containing substituents, at least one of them being co-ordinated to the succinate by co-ordination bond.
  • the boron-containing succinimides are preferred. Further, the combination use of the boron-containing succinate and a succinimide which will be described later is also a useful means.
  • the boron-containing compound is incorporated into the composition in such an amount that boron derived from the boron-containing compound can be from 0.005 to 0.06% by weight, preferably from 0.01 to 0.04% by weight of the total weight of the composition.
  • the boron-containing compound is incorporated into the composition in such an amount that the amount of boron derived from the boron-containing compound is less than 0.005% by weight of the total weight of the composition, the resulting composition cannot have sufficiently improved frictional properties (friction-reducing properties).
  • the boron-containing compound when the boron-containing compound is incorporated into the composition in such an amount that the amount of boron derived from the boron-containing compound is in excess of 0.06% by weight of the total weight of the composition, the effect cannot be enhanced in proportion to such an increased amount of the boron-containing compound.
  • additives which are usually incorporated into the conventional lubricating oils, such as other friction modifiers, other metallic detergents, other anti-wear agents, other non-ash dispersants, anti-oxidants, viscosity index improvers, pour point depressants, anti-foaming agents, rust preventives and corrosion inhibitors, can be added, if necessary, to the lubricating oil composition of the present invention within such a limit that they do not disturb the attainment of the object of the present invention.
  • Examples of other friction modifiers include partially-esterified polyhydric alcohols, amines, amides and sulfate esters.
  • Examples of other metallic detergents include barium sulfonate and barium phenate. In general, they are added to the composition in an amount of 0.1 to 5% by weight.
  • anti-wear agents examples include metallic salts of thiophosphoric acid, sulfur compounds, phosphoric esters and phosphorous esters. In general, they are added to the composition in an amount of 0.05 to 5.0% by weight.
  • non-ash dispersants examples include those of succinimide type, succinamide type, benzylamine type and ester type. In general, they are added to the composition in an amount of 0.5 to 7% by weight.
  • anti-oxidants examples include amine anti-oxidants such as alkylated diphenylamine, phenyl - a - naphthylamine and alkylated a - naphthylamine, and phenolic anti-oxidants such as 2,6-di-t-butyl-4-methylphenol and 4,4'-methylene-bis(2,6-di-t-butylphenol). In general, they are added to the composition in an amount of 0.05 to 4% by weight.
  • viscosity index improvers examples include those of polymethacrylate type, polyisobutylene type, ethylene-propylene co-polymer type and styrene-butadiene hydrogenated co-polymer type. In general, they are added to the composition in an amount of 0.5 to 35% by weight.
  • pour point depressants examples include polyalkyl-methacrylate, chlorinated paraffin-naphthalene condensation products and alkylated polystyrene.
  • anti-foaming agents examples include dimethyl polysiloxane and polyacrylic acid.
  • rust preventives examples include fatty acids, partially-esterified alkenyl succinates, fatty acid soaps, alkyl sulfonates, fatty polyhydric alcohol esters, fatty amines, paraffin oxides and alkyl polyoxyethylene ethers.
  • corrosion inhibitors examples include benzotriazole and benzoimidazole.
  • the co-efficients of friction of the lubricating oil compositions were determined by a reciprocating sliding friction tester [SRV Friction Tester] under the conditions of a frequency of 50 Hz, an amplitude of 3 mm, a load of 25N, a temperature of 80°C and a test time of 25 minutes.
  • test for oxidisation by the air containing nitrogen oxides gas was carried out by exposing, for 8 hours, 150 ml of a sample oil to the air of 130°C, containing 1 volume % of nitrogen oxides (NOx), flown at a rate of 2 litres/hour.
  • Lubricating oil compositions of Examples 1 to 10 are those which contain (A) an oxymolybdenum sulfide dithiocarbamate, (B) a zinc dialkyl dithiophosphate, (C) zinc diamyl dithiocarbamate, copper dibutyl dithiocarbamate, tetrabutylthiuram disulfide, dibenzyl disulfide or di(thianonyl)thiadiazole, (D) calcium salicylate, and (E) boron-containing succinimide.
  • Lubricating oil compositions of Comparative Examples 1 and 2 are those which contain the (A), (B), (D) and (E) components, but does not contain the component (C).
  • each of the above lubricating oil compositions was blended with a base oil (100 neutral oil having a viscosity at 100°C of 4.4 mm 2 /s), thereby obtaining lubricating oil compositions having the formulations shown in Table 1.
  • the co-efficient of friction of each composition thus obtained was determined right after the composition was prepared, and after the composition was oxidised by being preserved at 130°C for 8 hours in the presence of nitrogen oxides gas. The results are shown in Table 1.
  • the lubricating oil compositions of the present invention are prepared by blending a base oil with an oxymolybdenum sulfide dithiocarbamate having a specific structure, a zinc dialkyl dithiophosphate, a sulfur compound, a metallic detergent and a boron-containing compound. Therefore, they not only have excellent anti-wear properties, but also exhibit high resistance to oxidisation even at high temperatures in the presence of nitrogen oxides gas, thereby maintaining excellent frictional properties (friction-reducing properties) for a prolonged period of time.
  • the lubricating oil compositions of the present invention are thus useful as lubricating oils for internal-combustion engines, automatic transmission gearboxes, dampers and power steerings; they are particularly useful as lubricating oils for internal-combustion engines.

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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)
  • Lubricants (AREA)
EP96928703A 1995-08-30 1996-08-30 Schmierölzusammensetzung Withdrawn EP0855437A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP24550595A JP3556348B2 (ja) 1994-09-01 1995-08-30 潤滑油組成物
JP245505/95 1995-08-30
PCT/JP1996/002436 WO1997008280A1 (fr) 1995-08-30 1996-08-30 Composition d'huile lubrifiante

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EP0855437A1 true EP0855437A1 (de) 1998-07-29
EP0855437A4 EP0855437A4 (de) 1999-06-23

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6323162B1 (en) 1999-05-10 2001-11-27 Tonengeneral Sekiyu K.K. Lubricant oil composition for internal combustion engines (LAW960)
EP1231256A2 (de) * 2001-02-09 2002-08-14 Ethyl Corporation Schmiermittelzusammensetzung für automatische Getriebe mit verbesserten Verschleissschutzeigenschaften
EP1252277A1 (de) * 1999-12-22 2002-10-30 The Lubrizol Corporation Schmiermittel mit einer mischung aus einer molybdänkomponente, phosphorkomponente und dispergiermittel
EP1256619A1 (de) * 2001-05-11 2002-11-13 Infineum International Limited Schmierölzusammensetzung
US6500786B1 (en) 2001-11-26 2002-12-31 Infineum International Ltd. Lubricating oil composition
EP1354933A1 (de) * 2002-04-05 2003-10-22 Infineum International Limited Schierölzusammensetzungen kompatibel mit dem Dichtungselement eines Verbrennungsmotors
EP1262538A3 (de) * 2001-05-11 2003-11-05 Infineum International Limited Verschluss- und oxidations-schutzende Zusätze für Scmierölzusammensetzungen
US6784143B2 (en) 2001-05-11 2004-08-31 Infineum International Ltd. Lubricating oil composition
US7148186B2 (en) 1999-04-08 2006-12-12 Tonengeneral Sekiyu K.K. Lubricant oil composition for diesel engines (LAW964)
WO2007093632A2 (en) * 2006-02-17 2007-08-23 Shell Internationale Research Maatschappij B.V. Lubricant composition
WO2007120712A3 (en) * 2006-04-13 2008-02-21 Exxonmobil Res & Eng Co Low sap engine lubricant additive and composition containing non-corrosive sulfur and organic borates
WO2011161662A1 (fr) * 2010-06-25 2011-12-29 Total Raffinage Marketing Compositions lubrifiantes pour transmissions automobiles
CN113046159A (zh) * 2021-03-24 2021-06-29 雅士盾(天津)石油科技有限公司 一种发动机润滑油及其制备方法

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7148186B2 (en) 1999-04-08 2006-12-12 Tonengeneral Sekiyu K.K. Lubricant oil composition for diesel engines (LAW964)
EP1203806A1 (de) * 1999-05-10 2002-05-08 Tonen Corporation Schmierölzusammensetzung für Brennkraftmaschinen
US6323162B1 (en) 1999-05-10 2001-11-27 Tonengeneral Sekiyu K.K. Lubricant oil composition for internal combustion engines (LAW960)
EP1252277A4 (de) * 1999-12-22 2004-03-17 Lubrizol Corp Schmiermittel mit einer mischung aus einer molybdänkomponente, phosphorkomponente und dispergiermittel
EP1252277A1 (de) * 1999-12-22 2002-10-30 The Lubrizol Corporation Schmiermittel mit einer mischung aus einer molybdänkomponente, phosphorkomponente und dispergiermittel
US6890890B2 (en) 1999-12-22 2005-05-10 The Lubrizol Corporation Lubricants with the combination of a molybdenum compound, a phosphorus compounds and dispersants
EP1231256A3 (de) * 2001-02-09 2003-05-14 Ethyl Corporation Schmiermittelzusammensetzung für automatische Getriebe mit verbesserten Verschleissschutzeigenschaften
EP1231256A2 (de) * 2001-02-09 2002-08-14 Ethyl Corporation Schmiermittelzusammensetzung für automatische Getriebe mit verbesserten Verschleissschutzeigenschaften
EP1256619A1 (de) * 2001-05-11 2002-11-13 Infineum International Limited Schmierölzusammensetzung
EP1262538A3 (de) * 2001-05-11 2003-11-05 Infineum International Limited Verschluss- und oxidations-schutzende Zusätze für Scmierölzusammensetzungen
SG116451A1 (en) * 2001-05-11 2005-11-28 Infineum Int Ltd Lubricating oil composition.
US6784143B2 (en) 2001-05-11 2004-08-31 Infineum International Ltd. Lubricating oil composition
US6500786B1 (en) 2001-11-26 2002-12-31 Infineum International Ltd. Lubricating oil composition
US6723685B2 (en) 2002-04-05 2004-04-20 Infineum International Ltd. Lubricating oil composition
EP1354933A1 (de) * 2002-04-05 2003-10-22 Infineum International Limited Schierölzusammensetzungen kompatibel mit dem Dichtungselement eines Verbrennungsmotors
WO2007093632A2 (en) * 2006-02-17 2007-08-23 Shell Internationale Research Maatschappij B.V. Lubricant composition
WO2007093632A3 (en) * 2006-02-17 2007-11-22 Shell Int Research Lubricant composition
WO2007120712A3 (en) * 2006-04-13 2008-02-21 Exxonmobil Res & Eng Co Low sap engine lubricant additive and composition containing non-corrosive sulfur and organic borates
WO2011161662A1 (fr) * 2010-06-25 2011-12-29 Total Raffinage Marketing Compositions lubrifiantes pour transmissions automobiles
FR2961823A1 (fr) * 2010-06-25 2011-12-30 Total Raffinage Marketing Compositions lubrifiantes pour transmissions automobiles
CN113046159A (zh) * 2021-03-24 2021-06-29 雅士盾(天津)石油科技有限公司 一种发动机润滑油及其制备方法

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WO1997008280A1 (fr) 1997-03-06

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