EP0578642B1 - Composition d'huile lubrifiante - Google Patents

Composition d'huile lubrifiante Download PDF

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Publication number
EP0578642B1
EP0578642B1 EP92904376A EP92904376A EP0578642B1 EP 0578642 B1 EP0578642 B1 EP 0578642B1 EP 92904376 A EP92904376 A EP 92904376A EP 92904376 A EP92904376 A EP 92904376A EP 0578642 B1 EP0578642 B1 EP 0578642B1
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Prior art keywords
lubricating oil
molecular weight
carbon atoms
additive
medium molecular
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German (de)
English (en)
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EP0578642A4 (en
EP0578642A1 (fr
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Pieter Jan Dirk Muntz
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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
    • C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
    • C10M159/02—Natural products
    • C10M159/04—Petroleum fractions, e.g. tars, solvents
    • 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
    • C10M101/025—Petroleum fractions waxes
    • 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
    • C10M127/00—Lubricating compositions characterised by the additive being a non- macromolecular hydrocarbon
    • C10M127/02—Lubricating compositions characterised by the additive being a non- macromolecular hydrocarbon well-defined 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/02—Well-defined aliphatic 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/02—Well-defined aliphatic compounds
    • C10M2203/022—Well-defined aliphatic compounds saturated
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/02—Well-defined aliphatic compounds
    • C10M2203/024—Well-defined aliphatic compounds unsaturated
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/04—Well-defined cycloaliphatic 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/102—Aliphatic fractions
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/104—Aromatic fractions
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/106—Naphthenic fractions
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/108—Residual fractions, e.g. bright stocks
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/14—Synthetic waxes, e.g. polythene waxes
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/17—Fisher Tropsch reaction products
    • 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
    • C10M2290/00—Mixtures of base materials or thickeners or additives
    • C10M2290/02—Mineral base oils; Mixtures of fractions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C10N2040/046—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for traction drives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/06—Instruments or other precision apparatus, e.g. damping 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
    • C10N2040/08—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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/10—Semi-solids; greasy

Definitions

  • the present invention relates to lubricating oil compositions.
  • Crude oils contain a number of broad classes of hydrocarbons, the proportions of which vary greatly from oil to oil.
  • a manufacturer will select feeds which have appropriate molecular weight ranges and are rich in the desired classes of hydrocarbons (iso-paraffins), and low in aromatics, ONS compounds, and paraffins so that production costs can be kept low. Crudes such as those from Pennyslvania which are ideal for lube oil manufacture are being depleted, so now most manufacturers use a feed stock mix which is carefully selected to meet the product mix required by the market. Some manufacturers upgrade their feedstock by using a severe hydrogenation/hydrogenolysis process called hydrocracking to remove sulphur, aromatics, and to open rings and crack larger molecules.
  • Lubricating Oil Fractions Fraction No. of C atoms Molecular Weight Boiling Range °C (Plant conditions) Light (Low viscosity) 22-36 300-500 370-500 Medium (medium viscosity) 29-45 400-600 450-550 Heavy (high viscosity) 43 ⁇ 600 ⁇ >500(residue)
  • the desired oily alkane material is extracted from the viscous bottoms product from the vacuum tower using liquid propane (high pressure, 65°C) in a propane deasphalting plant.
  • liquid propane high pressure, 65°C
  • the more polar, high molecular weight polycyclic aromatics are less soluble in liquid propane than are the alkane (paraffin) components and are removed as a hard sludge. Evaporation of the propane leaves the heaviest grade of lubricating oil which is usually referred to as "bright stock".
  • Each of the lube oil fractions is next treated with a solvent system which selectively removes much of the aromatic and O, N, S material. Phenol and more recently furfural have been widely used in elaborate multistage counter current equipment for this purpose. The immiscible, slightly polar solvent selectively extracts the more polar aromatic material from the hydrocarbon mixture.
  • n-Alkanes normal paraffins
  • branched alkanes of similar molecular weight n-Alkanes
  • a suitable solvent such as a methylethylketone-toluene mixture and chilling 5-10°C below the required pour point.
  • the n-alkanes are precipitated as "slack wax" which is separated by continuous filtration.
  • the final stage in manufacture of the base stocks is hydrogenation to convert small amounts of dark-coloured unsaturated material into saturated material and to remove sulphur from sulphur compounds present in the oil.
  • Lubricating oils are finally prepared by blending base stocks to give oil of the desired viscosity range, then introducing many additives to improve the life and performance of the oil.
  • lubricating oils derived from crude oil is particularly complex.
  • Normally lubricating oils contain a high proportion of naphthenic or paraffinic compounds.
  • the hydrocarbons comprising a typical lubricating oil may have from 20 to 70 carbon atoms.
  • Usually the hydrocarbons contained in lubricating oil have very few olefinic bonds. However there may be a significant proportion of hydrocarbons exhibiting aromatic unsaturation.
  • a further description of base lubricating oils can be found in an article by D.V. Brock published in "Lubricant Engineering" Volume 43 pages 184-185 March 1987.
  • the present invention is based on the discovery that the performance of lubricating oil compositions can be significantly improved by the addition of small amounts of a medium molecular weight paraffin to lubricating oil having typically between about 20 and 70 carbon atoms.
  • the present invention provides a lubricating oil composition
  • a base lubricating oil having typically between about 20 and 70 carbon atoms, characterised by from between 0.1% and 2% by volume of an additive wherein the additive comprises paraffins of medium molecular weight and having between about 10 and 20 carbon atoms, so as to be effective in removing varnish and reducing the coefficient of friction between the surfaces.
  • the medium molecular weight paraffin (MMWP) may comprise from 10 to 20 carbon atoms, from 10 to 19 carbon atoms or from 10 to 17 carbon atoms but preferably it comprises from 10 to 15 carbon atoms.
  • the composition may contain as little as 0.1% by volume of MMWP for an improvement in performance to be observed.
  • the engine oil composition of the present invention contains from 0.5% to 1% by volume of a MMWP. Best results have been obtained with about 0.6% by volume MMWP.
  • MMWP's are normally derived from the processing of crude oils. Normally they are produced during the initial atmospheric distillation of a crude oil and are characterised as hydrocarbons having a boiling point in the range from 150 to 335°C.
  • compositions of the present invention may be prepared as compositions ready for use or as concentrates for premixing or mixing in situ e.g. in the sump of an engine. Concentrates may contain as much as 25% of the MMWP. The effective amount of MMWP required depends on the ultimate purpose for its inclusion and may also depend upon the additive selected.
  • Shellsol T is characterised as a solvent having the following properties-: Property Test Method Unit Specification Typical Value Distillation ASTM D1078 °C Ranges, IBP 180 min 180.2 DP 205 max 202.5 Flash Point IP 170 °C - 57.5 Aniline Point ASTM D611 °C 78-83 80 Density @ 15°C ASTM D1298 kg/ litre 0.765-0.775 0.769 Composition %m Paraffins >99.8 Naphthenes ⁇ 0.1 Aromatics ⁇ 0.1
  • Shell P874 and P878 are technical white oils comprising a mixture of paraffins and naphthenes.
  • Paraffins of medium molecular weight include dodecane, hexadecane, octadecane and cosane.
  • the lubricating oil compositions of the present invention are based on lubricating oil compositions that are normally commercially available. These compositions may include various additives such as dispersants, detergents, oxidation inhibitors, foam inhibitors, pour point depressants and viscosity improvers.
  • additives such as dispersants, detergents, oxidation inhibitors, foam inhibitors, pour point depressants and viscosity improvers.
  • oils of the present invention provide a number of significant advantages over the existing formulations. These include the following.
  • the present invention also includes within its scope methods for any one or more of the following:
  • the performance of the compositions of the present invention was compared with the performance of the compositions without the additive of the present invention using a pin on ball testing machine.
  • the pin on ball testing machine comprises an electric motor driving a single shaft through a set of pulleys.
  • a rotatable disc having a diameter of approximately 4cm is attached to the shaft and is rotated at a speed of 1200 - 1500 rpm.
  • a separate shaft is pivoted at one end of the apparatus so that a hardened steel bearing element can be applied to the rotating disc.
  • a torque wrench type configuration fitted to the pivoted shaft is used to determine the load applied to the rotating disc by the hardened steel bearing element.
  • Lubricant under test was applied to the bearing surface by splashing lubricant from a bath held at a base of the rotating disc. At all times during the test a continuous film of lubricant was in contact with the bearing.
  • the test procedure was as follows. With the disc rotating, a piece of coarse wet and dry emery paper was used to smooth any imperfections and score marks from the rotating disc prior to test. The bearing was moved to ensure a fresh unmarked surface was available for contact with the rotating disc. Prepared samples were poured into an oil bath containing approximately 20 to 40 mls and held in close contact at the base of the rotating disc which picked oil up and carried it across the bearing surface. The bearing fixed to the pivoted shaft was lowered onto the rotating lubricated disc and allowed to settle in. A continuous load was manually applied to the handle of the pivoted shaft. The load was maintained and gradually increased until the bearing surfaces began to squeal. At the point when squealing commenced, the torque applied was measured in ft.lb units.
  • Youngs 303 which is a lubricating oil used in cleaning guns.
  • Gas chromatographic analysis of Youngs 303 revealed that it is a mixture of a lubricating oil and another hydrocarbon fraction of slightly higher boiling point than kerosene.
  • the kerosene like fraction had major components of carbon chain length 11 to 13.
  • the kerosene like fraction comprised approximately 50% of the "Youngs 303".
  • the dynamometer consistently indicated that the lubricating oil compositions of the present invention resulted in an idle speed that was consistently 125 rpm greater than that for the base lubricating oil.
  • the lubricating oil composition of the present invention was compared with a base lubricating oil over a range of engine speeds.
  • the additive used was Shellsol T in the ratio 1:160.
  • the engine used was a Caterpillar (Model 3406) six cylinder 400 horsepower engine.
  • Tables 4 and 5 illustrates the performance of the engine using the base lubricating oil composition
  • Table 5 illustrates the performance of the same engine using a lubricating oil composition of the present invention.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Fats And Perfumes (AREA)
  • Sealing Material Composition (AREA)

Claims (23)

  1. Procédé pour réduire le dépôt de gomme et améliorer la lubrification dans des systèmes mécaniques choisis dans le groupe consistant en des moteurs à combustion interne, des boítes de vitesse et des différentiels, procédé qui comprend l'étape consistant à lubrifier le moteur, la boíte de vitesse ou le différentiel avec une composition d'huile lubrifiante, dans lequel :
    (a) la composition comprend une huile lubrifiante de base ayant habituellement 20 à 70 atomes de carbone ; et
    (b) la composition est caractérisée par une quantité de 0,1 % à 2 % en volume d'une paraffine de poids moléculaire moyen comprenant 10 à 20 atomes de carbone ;
       de manière à être efficace dans l'élimination de la gomme et la réduction du coefficient de frottement entre les surfaces auxquelles elle est appliquée.
  2. Procédé suivant la revendication 1, dans lequel la paraffine de poids moléculaire moyen comprend 10 à 19 atomes de carbone.
  3. Procédé suivant la revendication 2, dans lequel la paraffine de poids moléculaire moyen comprend 10 à 17 atomes de carbone.
  4. Procédé suivant la revendication 3, dans lequel la paraffine de poids moléculaire moyen comprend 10 à 15 atomes de carbone.
  5. Procédé suivant l'une quelconque des revendications 1 à 4, dans lequel la paraffine de poids moléculaire moyen est présente en une proportion de 0,5 à 1,0 % en volume.
  6. Procédé suivant la revendication 5, dans lequel la paraffine de poids moléculaire moyen est présente en une proportion d'environ 0,6 % en volume.
  7. Procédé suivant l'une quelconque des revendications précédentes, dans lequel la composition d'huile lubrifiante comprend en outre un additif, additif qui comprend la paraffine de poids moléculaire moyen.
  8. Procédé suivant la revendication 7, dans lequel l'additif comprend un pourcentage de carbone paraffinique supérieur à 99,8 %, un pourcentage de naphtènes inférieur à 0,1 % et un pourcentage de carbone aromatique inférieur à 0,1 %, a un point d'éclair d'approximativement 57,5°C, un point d'aniline d'approximativement 78 à 83°C et une masse volumique d'approximativement 0,765 à 0,775 kg/l.
  9. Procédé suivant la revendication 7, dans lequel l'additif comprend également des naphtènes.
  10. Procédé suivant la revendication 9, dans lequel, dans l'additif, les pourcentages de carbone de paraffines et de naphtènes suivant la méthode d'essai D2140 de l'American Society for Testing Materials (ASTM) sont, respectivement, égaux à approximativement 58 % et 42 %.
  11. Procédé suivant la revendication 10, dans lequel l'additif a un point d'éclair d'approximativement 106°C, un point d'aniline d'approximativement 82°C et une masse volumique d'approximativement 0,807 kg/l.
  12. Procédé suivant la revendication 9, dans lequel, dans l'additif, les pourcentages de carbone des paraffines et naphtènes suivant la méthode d'essai D2140 de l'American Society for Testing Materials (ASTM) sont, respectivement, égaux à approximativement 79 et 21 %.
  13. Procédé suivant la revendication 12, dans lequel l'additif a un point d'éclair d'approximativement 146°C, un point d'aniline d'approximativement 97°C et une masse volumique d'approximativement 0,799 kg/l.
  14. Procédé suivant l'une quelconque des revendications 7 à 13, dans lequel l'additif est présent en une proportion de 1,25 % en volume.
  15. Procédé suivant l'une quelconque des revendications précédentes, procédé qui comprend en outre les étapes consistant :
    (a) à prendre une composition d'huile lubrifiante comprenant l'huile lubrifiante de base ayant habituellement 20 à 70 atomes de carbone ; et
    (b) à ajouter la paraffine de poids moléculaire moyen à la composition d'huile lubrifiante en une quantité de 0,1 à 2,0 % en volume de la composition d'huile lubrifiante.
  16. Composition d'huile lubrifiante apte à l'utilisation dans un procédé suivant l'une quelconque des revendications 5 à 14.
  17. Utilisation d'une composition d'huile lubrifiante dans un procédé pour réduire le dépôt de gomme et améliorer la lubrification dans des systèmes mécaniques choisis dans le groupe consistant en des moteurs à combustion interne, des boítes de vitesse et des différentiels, dans laquelle :
    (a) la composition d'huile lubrifiante comprend une huile lubrifiante de base ayant habituellement 20 à 70 atomes de carbone ; et
    (b) la composition d'huile lubrifiante est caractérisée par la présence de 0,1 % à 2 % en volume d'une paraffine de poids moléculaire moyen comprenant 10 à 20 atomes de carbone ;
       de manière à être efficace dans l'élimination de la gomme et la réduction du coefficient de frottement entre les surfaces auxquelles elle est appliquée.
  18. Utilisation suivant la revendication 17, dans laquelle la paraffine de poids moléculaire moyen comprend 10 à 19 atomes de carbone.
  19. Utilisation suivant la revendication 18, dans laquelle la paraffine de poids moléculaire moyen comprend 10 à 17 atomes de carbone.
  20. Utilisation suivant la revendication 19, dans laquelle la paraffine de poids moléculaire moyen comprend 10 à 15 atomes de carbone.
  21. Utilisation suivant l'une quelconque des revendications 17 à 20, dans laquelle la composition d'huile lubrifiante répond à la définition suivant la revendication 15.
  22. Composition de graisse comprenant un épaississant et une composition d'huile lubrifiante apte à l'utilisation suivant l'une quelconque des revendications 17 à 21.
  23. Composition de graisse suivant la revendication 22, dans laquelle l'épaississant comprend un savon métallique.
EP92904376A 1991-02-04 1992-02-04 Composition d'huile lubrifiante Expired - Lifetime EP0578642B1 (fr)

Applications Claiming Priority (13)

Application Number Priority Date Filing Date Title
AU442591 1991-02-04
AU4425/91 1991-02-04
AUPK442591 1991-02-04
AU9259/91 1991-11-04
AU925991 1991-11-04
AUPK925991 1991-11-04
AUPK999491 1991-12-13
AU999491 1991-12-13
AU9994/91 1991-12-13
AUPL053192 1992-01-23
AU531/92 1992-01-23
AU53192 1992-01-23
PCT/AU1992/000034 WO1992013932A1 (fr) 1991-02-04 1992-02-04 Composition d'huile lubrifiante

Publications (3)

Publication Number Publication Date
EP0578642A1 EP0578642A1 (fr) 1994-01-19
EP0578642A4 EP0578642A4 (en) 1994-05-25
EP0578642B1 true EP0578642B1 (fr) 2002-10-02

Family

ID=27424306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92904376A Expired - Lifetime EP0578642B1 (fr) 1991-02-04 1992-02-04 Composition d'huile lubrifiante

Country Status (7)

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EP (1) EP0578642B1 (fr)
JP (1) JPH06506237A (fr)
AT (1) ATE225389T1 (fr)
AU (1) AU1204592A (fr)
BR (1) BR9205586A (fr)
DE (1) DE69232795D1 (fr)
WO (1) WO1992013932A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5150060B2 (ja) * 2006-03-31 2013-02-20 Ｊｘ日鉱日石エネルギー株式会社 放電加工油組成物
JP5265087B2 (ja) * 2006-03-31 2013-08-14 Ｊｘ日鉱日石エネルギー株式会社 さび止め油組成物
WO2007114505A1 (fr) * 2006-03-31 2007-10-11 Nippon Oil Corporation Composition d'huile hydrocarbonee polyfonctionnelle
JP5102966B2 (ja) * 2006-03-31 2012-12-19 Ｊｘ日鉱日石エネルギー株式会社 金属加工油組成物
JP5102965B2 (ja) * 2006-03-31 2012-12-19 Ｊｘ日鉱日石エネルギー株式会社 金属加工油組成物

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1966111A (en) * 1930-01-20 1934-07-10 Standard Oil Dev Co Lubricating oil and method of making the same
FR2278758A1 (fr) * 1974-07-17 1976-02-13 Exxon Research Engineering Co Composition d'huile hydrocarbonee pour fluides hydrauliques
ES438552A1 (es) * 1975-06-13 1977-09-01 Empresa Nacional Aluminio Mejoras en los procedimientos de laminacion en frio del alu-minio.
GB1572794A (en) * 1975-12-16 1980-08-06 Shell Int Research Baseoil compositions
DD209846A1 (de) * 1982-09-20 1984-05-23 Petrolchemisches Kombinat Schmierstoffzusaetze zur verbesserung des luftabscheidevermoegens
DE3544619A1 (de) * 1985-12-17 1987-06-19 Bayer Ag Farbige siliconmassen
GB2224287B (en) * 1987-12-07 1991-03-27 Nippon Oil Co Ltd Lubricants for traction drives
US4882077A (en) * 1988-03-09 1989-11-21 W. R. Grace & Co.-Conn. Metalworking fluid
DD280545A1 (de) * 1989-03-14 1990-07-11 Akad Wissenschaften Ddr Fluessiges druckuebertragungsmittel fuer hochdruck-hochtemperatur-belastungen

Also Published As

Publication number Publication date
DE69232795D1 (de) 2002-11-07
AU1204592A (en) 1992-09-07
BR9205586A (pt) 1994-09-27
EP0578642A4 (en) 1994-05-25
ATE225389T1 (de) 2002-10-15
EP0578642A1 (fr) 1994-01-19
JPH06506237A (ja) 1994-07-14
WO1992013932A1 (fr) 1992-08-20

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