WO1996037584A1 - Compositions d'huiles lubrifiantes - Google Patents

Compositions d'huiles lubrifiantes Download PDF

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Publication number
WO1996037584A1
WO1996037584A1 PCT/US1995/006621 US9506621W WO9637584A1 WO 1996037584 A1 WO1996037584 A1 WO 1996037584A1 US 9506621 W US9506621 W US 9506621W WO 9637584 A1 WO9637584 A1 WO 9637584A1
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WO
WIPO (PCT)
Prior art keywords
weight
lubricant
oil composition
composition
lubricant oil
Prior art date
Application number
PCT/US1995/006621
Other languages
English (en)
Inventor
Michiya Yamada
Katsuya Arai
Hirotaka Tomizawa
Original Assignee
Exxon Research And Engineering Company
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.)
Filing date
Publication date
Priority to JP6131164A priority Critical patent/JPH07331269A/ja
Priority claimed from JP6131164A external-priority patent/JPH07331269A/ja
Application filed by Exxon Research And Engineering Company filed Critical Exxon Research And Engineering Company
Priority to PCT/US1995/006621 priority patent/WO1996037584A1/fr
Publication of WO1996037584A1 publication Critical patent/WO1996037584A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
    • 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/52—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of 30 or more atoms
    • C10M133/56—Amides; Imides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
    • C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • C10M137/10—Thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/086—Imides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/26—Amines
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/28—Amides; Imides
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/046—Polyamines, i.e. macromoleculars obtained by condensation of more than eleven amine monomers
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
    • 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
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    • 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
    • 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
    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
    • C10M2227/061—Esters derived from boron
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • C—CHEMISTRY; METALLURGY
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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
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    • 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
    • C10N2040/04—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
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    • 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
    • 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
    • C10N2040/25—Internal-combustion engines
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/251—Alcohol fueled engines
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines
    • C10N2040/28—Rotary engines
    • 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
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/32—Wires, ropes or cables lubricants
    • C—CHEMISTRY; METALLURGY
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    • 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
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/36—Release agents or mold release agents
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/38—Conveyors or chain belts
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    • 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
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/42—Flashing oils or marking oils
    • C—CHEMISTRY; METALLURGY
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    • 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
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/50—Medical uses

Definitions

  • the present invention relates to a novel lubricant oil composition. More specifically, the present invention relates to a lubricant oil composition, being preferable as a lubricant oil for automobiles, including lubricant oils for internal combustion engines such as automobile engines, gear oil, ATF oil (automatic transmission fuel oil), and shock absorber oil, and having a lower coefficient of friction under a wide range of utility, particularly under operating conditions with oil temperatures at medium to low degrees and low-speed rotation.
  • lubricant oils for internal combustion engines such as automobile engines, gear oil, ATF oil (automatic transmission fuel oil), and shock absorber oil
  • Lubricant oils have been used in internal combustion engines, automatic transmissions, buffering systems and power steering and in gears, etc., for smoothing the operation thereof.
  • lubricant oils for internal combustion engines serve roles for cooling the inside of engines and cleansing and dispersing combustion products, and in preventing rust and corrosion, other than just for lubricating various sliding parts including piston rings and cylinder liners, bearings for crank shafts and connecting rods, valve driving systems including cam and valve lifter.
  • lubricant oils for internal combustion engines to insure smooth operation and prevent abrasion and seizure under any condition.
  • Engine lubricating parts are mostly in the state of fluid lubrication, but vertical points in valve trains and pistons readily fall into the state of interface lubrication. Under such interface lubrication, the abrasion preventing properties are generally provided by addition of zinc dithiophosphate and zinc dithiocarbamate.
  • the present invention has been carried out for the objective to provide a lubricant oil composition having a lower coefficient of friction under a wide variety of conditions of utility, particularly under operating conditions of oil temperatures of medium and low degrees and low-speed rotation.
  • the present inventors have made intensive investigations to develop a lubricant oil composition having the aforementioned preferable properties. Consequently, the inventors have found that the objective can be attained with a lubricant oil composition comprising a lubricant base oil blended with a specific ratio of sulfoxymolybdenum dithiocarbamate having a specific alkyl group, zinc dialkyl ⁇ dithiophosphate having a specific alkyl group and succinimide containing boron.
  • the present invention has been achieved on the basis of the finding.
  • the present invention is to provide a lubricant oil composition
  • a lubricant oil composition compris ⁇ ing a lubricant base oil blended with (A) sulfoxymolybdenum dithiocarbamate with a hydrocarbon group having 8 to 18 carbon atoms, (B) zinc dialkyldithiophosphate with a primary alkyl group having 1 to 18 carbon atoms, and (C) succinimide containing boron, wherein to the total amount of the composition, the molybdenum content derived from sulfoxymolybdenum dithiocarbamate is 200 to 1,000 ppm (ratio by weight) and the phosphorus content derived from zinc dialkyldithiophosphate is at 0.04 to 0.15% by weight and the boron content derived from succinimide containing boron is at 0.005 to 0.06% by weight.
  • any lubricant base oil can be used, without specific limitation, in the lubricant oil composition in accordance with the present invention, and the conventional lubricant base oils may be used, including mineral oils and synthetic oils.
  • the mineral oil includes hydrogenation processed oils produced by hydrogenation with hydrogenation catalysts such as cobalt and molybdenum along with carriers such as raffinate generated by solvent purification of a lubricant oil raw material using an aromatic solvent for extraction, such as phenol and furfural; or mineral oils, for example, lubricant distillate produced by isomerization of waxes, such as 60 Neutral Oil, 100 Neutral Oil, 150 Neutral Oil, 300 Neutral Oil, 500 Neutral Oil, Brite Stock and the like.
  • the synthetic oil includes poly- ⁇ -olefin oligomer, polybutene, alkylbenzene, polyol ester, polyglycol ester, dibasic acid ester, phosphate ester, silicone oil and the like.
  • These base oils may be used singly or in combination of two or more thereof, and such mineral oil may be mixed and used with such synthetic oil. It is preferable that the base oil has a kinematic viscosity generally in a range of 3 to 20 cSt at a temperature or 100°C.
  • the hydrocarbon group with 8 to 18 carbon atoms which is represented by R* and R ⁇ in the aforementioned general formula (1), includes for example an alkyl group with 8 to 18 carbon atoms, an alkenyl group with 8 to 18 carbon atoms, a cyclo- alkyl group with 8 to 18 carbon atoms, an allyl group with 8 to 18 carbon atoms, an alkylallyl group, an allylalkyl group and the like.
  • the alkyl group and the alkenyl group may be in the form of linear chain or in the form of branched chain.
  • the carbon number of the hydrocarbon group, which is represented by R* and R ⁇ is particularly preferably 8.
  • hydrocarbon group represented by ⁇ S and R ⁇ include octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, hexadecenyl, octadecenyl, dimethy- cyclohexyl, ethylcyclohexyl, methylcyclohexylmethyl, cyclohexylethyl, propylcyclohexyl, butylcyclohexyl, heptlcyclohexyl, dimethylphenyl, methylbenzyl, phenetyl, naphthyl, dimethylnaphthyl and the like.
  • sulfoxy ⁇ molybdenum dithiocarbamate may be used singly or in combination of two or more of its species.
  • Sulfoxymolybdenum dithiocarbamate may be blended so that the molybdenum content derived from sulfoxymolybdenum dithiocarbamate might be 200 to 1,000 ppm (ratio by weight), preferably 300 to 800 ppm (ratio by weight) based on the total weight of the composition.
  • the amount of blended sulfoxymolybdenum dithiocarbamate is less than an amount at which the molybdenum content derived from sulfoxy ⁇ molybdenum dithiocarbamate is less than 200 ppm (ratio by weight) based on the total weight of the composition, the effect on improving the wear properties cannot be exhibited satisfactorily; when the content of blended sulfoxymolybdenum dithio ⁇ carbamate exceeds an amount at which the molybdenum content derived from sulfoxymolybdenum dithiocarbamate is 1,000 ppm (ratio by weight) based on the total weight of the composition, the effect on improving the wear properties cannot be exhibited proportionally to the content, readily inducing sludge or the like.
  • R ⁇ and R ⁇ are independently a primary alkyl group with 1 to 18 carbon atoms and may or may not be the same).
  • the primary alkyl group represented by R- and R ⁇ in the aforementioned general formula (2) includes methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl groups, and zinc dialkyldithiophosphate having a primary alkyl group with 3 to 12 carbon atoms is preferably used as the lubricant oil composition of the present invention.
  • the alkyl groups of zinc dialkyldithiophosphate are exclusively primary alkyl groups, as satisfactory improvement of the wear properties cannot be yielded when the alkyl group is secondary or tertiary.
  • zinc dialkyl ⁇ dithiophosphate with a primary alkyl group may be used singly or in combination of two or more of such species. Additionally, zinc dialkyldithiophosphate should be blended so that the phosphorous content derived from dialkyldithiophosphate might be 0.04 to 0.15% by weight, in terms of phosphorous preferably 0.06 to 0.12% by weight in terms of phosphorous based on the total weight of the composition.
  • the blended amount of zinc dialkyldithiophosphate is an amount such that the phosphorous content derived from zinc dialkyldithiophosphate might be less than 0.04% by weight based on the total weight of the composition, neither satisfactory wear resistance nor satisfactorily lower coefficient of friction under operating conditions of an oil temperature of medium to low degrees and low-speed rotation can be yielded; if the blended amount of zinc dialkyl ⁇ dithiophosphate is an amount such that the phosphorous content derived from zinc dialkyldithiophosphate might be above 0.15% by weight based on the total weight of the composition, the effect cannot be improved in proportion to the amount.
  • the ratio in the number of atoms of boron to nitrogen in succinimide containing boron to be used in the lubricant oil composition of the present invention is 0.05 to 1.5, preferably 0.1 to 0.8.
  • the ratio in the number of atoms of boron to nitrogen is less than 0.05, the wear properties cannot be satisfactorily improved; or the wear properties might be deteriorated if the ratio in the number of atoms of boron to nitrogen is above 1.5
  • succinimide containing boron should be blended at an amount such that the boron content derived from succinimide containing boron is 0.005 to 0.06% by weight, preferably 0.01 to 0.04% by weight based on the total weight of the composition.
  • the blended amount of succinimide containing boron is an amount such that the boron content derived from succinimide containing boron is less than 0.005% by weight based on the total weight of the composition, the wear properties cannot be improved satisfactorily; if the blended amount of succinimide containing boron is an amount such that the boron content derived from succinimide containing boron is above 0.06% by weight based on the total weight of the composition, the effect cannot be improved proportionally.
  • succinimide containing boron may be used singly or in combination of two or more of such species.
  • additives conventionally used in lubricant oils may be added to the lubricant oil composi- tion of the present invention, including for example metallic cleansing agents, other wear adjustors, antioxidants, viscosity improvers, viscosity index improvers, pour point depressants, defoaming agents, other abrasion resistant agents, rust preventing agents, anti-corrosion agents and the like.
  • the metallic cleansing agents include calcium sulfonate, magnesium sulfonate, barium sulfonate, calcium phenate, barium phenate, calcium salicylate, magnesium salicylate and the like, and these may be used generally in an amount of 0.1 to 5% by weight.
  • the wear adjustors include for example polyhydric alcohol esters, amines, amides, sulfoesters and the like.
  • the antioxidants include for example amine antioxidants such as alkylated diphenylamine, phenyl-a-naphthylamine, alkylated a-naphthylamine, phenolic antioxidants such as 2,6-di-t-butyl-4-methyl phenol, and 4,4-methylene bis (2,6-di-t- butyl phenol), and the like. These may be used generally in an amount of 0.05 to 2% by weight.
  • amine antioxidants such as alkylated diphenylamine, phenyl-a-naphthylamine, alkylated a-naphthylamine
  • phenolic antioxidants such as 2,6-di-t-butyl-4-methyl phenol, and 4,4-methylene bis (2,6-di-t- butyl phenol), and the like. These may be used generally in an amount of 0.05 to 2% by weight.
  • the improvers of coefficients of viscosity include for example poly- methacrylate, polyisobutylene, ethylene-propylene copolymers, styrene-butadiene hydrogenated copolymers and the like. These may be used generally in an amount of 0.5 to 35% by weight.
  • the decreasing agents of flowing points include for example poly- alkylmethacrylate, chlorinated paraffin-naphthalene condensate, alkylated polystyrene and the like.
  • the defoaming agents include for example dimethylpolysiloxane and polyacrylic acid and the like.
  • the wear resistant agents include for example metal salts of thio- phosphate, metal salts of thiocarbamate, sulfur compounds, phosphate esters, phosphite esters and the like. These may be used generally in an amount of 0.05 to 5.0% by weight.
  • the rust preventing agents include for example fatty acid, alkenylsuccinic acid semiester, fatty acid soap, alkylsulfonate salts, polyhydric alcohol esters of fatty acid, fatty acid amines, oxidated paraffin, alkylpolyoxyethylene either and the like.
  • the anti-corrosion agents include for example benzotriazole, benzoimidazole and the like.
  • the coefficients of friction of lubricant oil compositions were measured by using a sliding reciprocating friction tester (SRV friction tester) at a 50-Hz frequency, a 3-mm vibration amplitude, a 25-N load, a temperature of 80°C, a testing period of 25 mintues.
  • SRV friction tester sliding reciprocating friction tester
  • Lubricant oil compositions containing a base oil 100 Neutral Oil at a viscosity of 4.4 rnm/s ⁇ at 100°C
  • a base oil 100 Neutral Oil at a viscosity of 4.4 rnm/s ⁇ at 100°C
  • each of the individual blending components of the types and amounts shown in Table 1 2.0% weight of calcium sulfonate as a metallic cleansing agent, were prepared, and their coefficients of friction were measured. The results are shown in Table 1.
  • lubricant oil compositions of Examples 1 to 8 in accordance with the present invention have lower coefficients of friction and excellent wear properties.
  • the lubricant oil composition of Comparative Example 1 blended with zinc dialkyldithiophosphate having a secondary alkyl group
  • the lubricant oil composition of Comparative Example 2 blended with succinimide instead of succinimide containing boron
  • the lubricant oil composition of Comparative Example 3 with phosphorous content of 0.03% by weight derived from zinc dialkyl ⁇ dithiophosphate having a primary alkyl group, have higher coefficients of friction, so that their wear properties are not satisfactory.
  • the lubricant oil composition of the present invention can exhibit burffing effects by being strongly adsorbed onto the wear face under operation conditions of oil temperatures of medium to low degrees and low-speed rotation, thereby decreasing the coefficienbt of friction.
  • the lubricant oil composition of the present invention is preferably uised as lubricant oils for automobiles such as a lubricant oil for internal combustion engines, gear oil, automatic transmission fluids, and shock absorber oils.

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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)

Abstract

L'invention traite d'une composition d'huile lubrifiante comportant une huile de base lubrifiante mélangée à: (A) du dithiocarbamate de sulfoxymolybdène accompagné d'un groupe hydrocarbure comprenant de 8 à 18 atomes de carbone, (B), du dialkyldithiophosphate de zinc dont les groupes alkyle qu'il contient sont des groupes alkyle exclusivement primaires comprenant de 1 à 18 atomes de carbone et (C), un succinimide contenant du bore. Par rapport à l'ensemble de la composition, la teneur en molybdène est comprise entre 200 et 1000 ppm. (rapport pondéral) et la quantité de phosphore dérivé du dialkyldithiophosphate de zinc est comprise entre 0,04 et 0,15 % en poids, tandis que celle de bore dérivé du succinimide contenant du bore est comprise entre 0,005 et 0,06 % en poids. La composition d'huile lubrifiante selon cette invention est capable d'avoir des effets d'amortissement dans la mesure où elle est fortement adsorbée à la surface d'usure dans des conditions de fonctionnement où l'huile se trouve dans une plage de températures allant d'une température moyenne à une température peu élevée et à faible vitesse de rotation, faisant, de ce fait, décroître le coefficient de frottement. Cette composition d'huile lubrifiante sera utilisée, de préférence, comme lubrifiant pour moteur d'automobile à combustion interne et analogue.
PCT/US1995/006621 1994-05-20 1995-05-24 Compositions d'huiles lubrifiantes WO1996037584A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP6131164A JPH07331269A (ja) 1994-05-20 1994-05-20 潤滑油組成物
PCT/US1995/006621 WO1996037584A1 (fr) 1994-05-20 1995-05-24 Compositions d'huiles lubrifiantes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6131164A JPH07331269A (ja) 1994-05-20 1994-05-20 潤滑油組成物
PCT/US1995/006621 WO1996037584A1 (fr) 1994-05-20 1995-05-24 Compositions d'huiles lubrifiantes

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WO1996037584A1 true WO1996037584A1 (fr) 1996-11-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1027412A1 (fr) * 1997-11-12 2000-08-16 Exxon Chemical Patents Inc. Controle d'usure avec des dispersants utilisant des polymeres poly alfa-olefines
US6184185B1 (en) 1998-05-08 2001-02-06 Tonen Corporation Lubricant oil composition comprising borated cyclic carboxylic acid imide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419589A (en) * 1965-10-01 1968-12-31 American Metal Climax Inc Organic molybdenum compounds containing sulfur and method of preparation
US4098705A (en) * 1975-08-07 1978-07-04 Asahi Denka Kogyo K.K. Sulfur containing molybdenum dihydrocarbyldithiocarbamate compound
US4846983A (en) * 1986-02-21 1989-07-11 The Lubrizol Corp. Novel carbamate additives for functional fluids
US5160645A (en) * 1991-04-30 1992-11-03 Ntn Corporation Grease composition for constant velocity joint
US5207936A (en) * 1991-04-01 1993-05-04 Ntn Corporation Grease composition for constant velocity joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419589A (en) * 1965-10-01 1968-12-31 American Metal Climax Inc Organic molybdenum compounds containing sulfur and method of preparation
US4098705A (en) * 1975-08-07 1978-07-04 Asahi Denka Kogyo K.K. Sulfur containing molybdenum dihydrocarbyldithiocarbamate compound
US4846983A (en) * 1986-02-21 1989-07-11 The Lubrizol Corp. Novel carbamate additives for functional fluids
US5207936A (en) * 1991-04-01 1993-05-04 Ntn Corporation Grease composition for constant velocity joint
US5160645A (en) * 1991-04-30 1992-11-03 Ntn Corporation Grease composition for constant velocity joint

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1027412A1 (fr) * 1997-11-12 2000-08-16 Exxon Chemical Patents Inc. Controle d'usure avec des dispersants utilisant des polymeres poly alfa-olefines
EP1027412A4 (fr) * 1997-11-12 2002-01-02 Exxonmobil Chem Patents Inc Controle d'usure avec des dispersants utilisant des polymeres poly alfa-olefines
US6184185B1 (en) 1998-05-08 2001-02-06 Tonen Corporation Lubricant oil composition comprising borated cyclic carboxylic acid imide

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