WO2006047486A1 - Inhibition de la corrosion - Google Patents

Inhibition de la corrosion Download PDF

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Publication number
WO2006047486A1
WO2006047486A1 PCT/US2005/038319 US2005038319W WO2006047486A1 WO 2006047486 A1 WO2006047486 A1 WO 2006047486A1 US 2005038319 W US2005038319 W US 2005038319W WO 2006047486 A1 WO2006047486 A1 WO 2006047486A1
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WO
WIPO (PCT)
Prior art keywords
lubricating composition
composition
ppm
lubricating
oxyalkylene groups
Prior art date
Application number
PCT/US2005/038319
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English (en)
Inventor
Rodney J. Mcatee
Michael Boyer
Original Assignee
The Lubrizol Corporation
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
Application filed by The Lubrizol Corporation filed Critical The Lubrizol Corporation
Priority to CA002584779A priority Critical patent/CA2584779A1/fr
Priority to CN2005800438087A priority patent/CN101084295B/zh
Priority to EP05817058A priority patent/EP1824950A1/fr
Priority to US11/577,748 priority patent/US20090156446A1/en
Priority to JP2007538158A priority patent/JP2008518059A/ja
Publication of WO2006047486A1 publication Critical patent/WO2006047486A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene 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
    • 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
    • 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
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/40—Low content or no content compositions
    • C10N2030/42—Phosphor free or low phosphor content compositions
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/40—Low content or no content compositions
    • C10N2030/43—Sulfur free or low sulfur content compositions
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/40—Low content or no content compositions
    • C10N2030/45—Ash-less or low ash content
    • 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
    • C10N2040/252—Diesel 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

Definitions

  • the present invention relates to corrosion inhibition in a lubricating composition with a low total sulphated ash content.
  • the invention further relates to the use of the lubricating composition in a internal combustion engine.
  • Corrosion inhibitors are known and have been utilised in a variety of lubricant formulations.
  • corrosion inhibitors are rarely used in a lubricant, e.g., an engine lubricant, because of their known adverse effect on the performance of antiwear chemistry, particularly zinc dialkyl dithiophosphate (ZDDP). Consequently the absence of corrosion inhibitors results in an increase in corrosion. Conversely the presence of corrosion inhibitors reduces antiwear performance resulting in increased wear.
  • the present invention provides a lubricating composition with acceptable corrosion inhibition and antiwear performance.
  • an antiwear agent comprising at least one of (i) polyhydric alcohol with oxyalkylene groups, (ii) a fatty amine, or (iii) mixtures thereof, wherein the lubricating composition has a sulphated ash content of less than 0.8 wt %.
  • the invention provides a lubricating composition as defined above.
  • the lubricating composition has a total sulphated ash content of 0.75 wt % or less, 0.7 wt % or less, 0.65 wt % or less, 0.6 wt % or less, or 0.5 wt % or less.
  • suitable ranges for the total sulphated ash content include 0.01 wt % to 0.68 wt %, or 0.1 wt % to 0.63 wt %, or 0.2 wt % to
  • the lubricating composition has a phosphorus content of 900 ppm or less, 800 ppm or less or 750 ppm or less.
  • suitable ranges include 50 ppm to 850 ppm of phosphorus, 100 ppm to 700 ppm of phosphorus or 150 ppm to 500 ppm.
  • the lubricating composition has a sulphur content of less than 3000 ppm, 2000 ppm or less, 1500 ppm or less or 1000 ppm or less.
  • suitable ranges include 50 ppm to 1750 ppm, or 50 ppm to 2000 ppm of sulphur, 200 ppm to 1250 ppm of sulphur or 300 ppm to 900 ppm of sulphur.
  • the lubricating oil composition includes natural or synthetic oils of lubricating viscosity, oil derived from hydrocracking, hydrogenation, hydrofinishing, and unrefined, refined and re-refined oils and mixtures thereof.
  • Natural oils include animal oils, vegetable oils, mineral oils and mixtures thereof.
  • Synthetic oils include hydrocarbon oils, silicon-based oils, and liquid esters of phosphorus-containing acids. Synthetic oils may be produced by
  • Fischer-Tropsch as-to-liquid synthetic procedure as well as other gas-to-liquid oils.
  • the polymer composition of the present invention is useful when employed in a gas-to-liquid oil. Often Fischer-Tropsch hydrocarbons or waxes may be hydroisomerised.
  • Oils of lubricating viscosity may also be defined as specified in the
  • the oil of lubricating viscosity comprises an API Group I, II,
  • oil of lubricating viscosity is an API Group II, III,
  • the oil of lubricating viscosity in one embodiment is present from 15 wt % to 99.9 wt % of the composition, in another embodiment from 30 wt % to 98.9 wt % of the composition, in another embodiment from 40 wt % to 97.9 wt % of the composition, in another embodiment and in another embodiment from 50 wt % to 94.5 wt %> of the composition.
  • the lubricating composition contains a corrosion inhibitor.
  • the corrosion inhibitor is a polyhydric alcohol.
  • the corrosion inhibitor comprises a polyhydric alcohol with oxyalkylene groups.
  • the corrosion inhibitor comprises a polyhydric alcohol comprising monomeric units of oxyalkylene groups.
  • the polyhydric alcohol is often aliphatic, cycloaliphatic, aromatic, or heterocyclic.
  • the polyhydric alcohol may be selected from the group consisting of aliphatic- substituted cycloaliphatic alcohols, aliphatic-substituted aromatic alcohols, aliphatic-substituted heterocyclic alcohols, cycloaliphatic-substituted aliphatic alcohols, cycloaliphatic-substituted aromatic alcohols, cycloaliphatic-substituted heterocyclic alcohols, heterocyclic-substituted aliphatic alcohols, heterocyclic- substituted cycloaliphatic alcohols, heterocyclic-substituted aromatic alcohols or mixtures thereof.
  • the polyhydric alcohol typically contains 2 to 10, 2 to 6 or 2 to 4 hydroxy groups.
  • the polyhydric alcohol may be derived from a polyglycol contain up to 150, up to 100, up to 75 or up to 50 oxyalkylene groups.
  • the oxyalkylene group may be present in repeat units present from 2 to 150 repeat units, or 2 to 125 repeat units, 4 to 90 repeat units, or 6 to 45 repeat units.
  • Each oxyalkylene group may independently contain a number of carbon atoms present from 2 to 8 , 2 to 5 or 3 to 4. In one embodiment the oxyalkylene group contains 3 or 4 carbon atoms.
  • polyhydric alcohols include glycols such as ethylene glycol, propylene glycol, butylene glycol, pentaerthyritol, mannitol, sorbitol, glycerol, di-glycerol, tri-glycerol, tetra-glycerol, erythritol, 2- hydroxymethyl-2-methyl- 1 ,3-propanediol (trimethylole thane), 2-ethyl-2- (hydroxymethyl)-l,3-propanediol (trimethylolpropane), 1 ,2,4-hexanetriol and mixtures thereof.
  • glycols such as ethylene glycol, propylene glycol, butylene glycol, pentaerthyritol, mannitol, sorbitol, glycerol, di-glycerol, tri-glycerol, tetra-glycerol, erythritol, 2- hydroxymethyl
  • Examples of a suitable polyhydric alcohol corrosion inhibitor include a polyalkylene glycol called Pluriol® commercially available from BASF, or Synalox® 100-20B, Synalox® 100-30B, Synalox® 100-5OB, Synalox® 100- 85B, Synalox® 100-120B or Synalox® 100-150B (all commercially available from Dow).
  • the Synalox® corrosion inhibitors are polyhydric alcohol with oxyalkylene groups that is, poly or oligo- oxyalkylene groups, with very low pour points and high viscosity indices.
  • the Synalox® corrosion inhibitor comprises a homopolymer or copolymer of propylene oxide.
  • Synalox® corrosion inhibitor is described in more detail in a product brochure with Form No. 118-01453-0702 AMS, published by The Dow Chemical Company.
  • the product brochure is entitled "SYNALOX Lubricants, High- Performance Polyglycols for Demanding Applications.”
  • the corrosion inhibitor comprises the polyhydric alcohol with poly- or oligo- oxyalkylene groups
  • the mononieric oxyalkylene groups contain at least 50 wt % or at least 65 wt % or at least 80 wt % or at least 95 wt %, groups of 3 to 8 carbon atoms.
  • a number of oxyalkylene groups may be ethylene oxide, provided the corrosion inhibitor is oil soluble.
  • the corrosion inhibitor comprises a fatty amine or amide, such as an oil soluble saturated or unsaturated alkylated amine or derivatives thereof.
  • the amine is a monoamine and in another embodiment the amine is a polyamine.
  • the fatty amine has a terminal -NH 2 group.
  • Examples of a suitable fatty amine include oleyl amine, octylamine octanoate or the reaction product of a fatty acid such as oleic acid with a polyamine or mixtures thereof.
  • the corrosion inhibitor may be a the same as a metal deactivator, i.e., derivatives of benzotriazoles, 1,2,4-triazoles, benzimidaz ⁇ les, 2-alkyldithiobenzimidazoles or 2-alkyldithiobenzothiazoles.
  • the benzotriazole compounds may be substituted at one of the following ring positions 1- or 2- or 4- or 5- or 6- or 7- benzotriazoles.
  • the hydrocarbyl groups contain 1 to 30, 1 to 15 or 1 to 7 carbon atoms. Examples of a benzotriazole include tolylbenzotriazole.
  • the corrosion inhibitor is present from 0.01 to 10, in one embodiment 0.01 to 5, in another embodiment 0.02 to 2 and in yet another embodiment 0.05 to 1 weight percent of the lubricating composition.
  • the corrosion inhibitor agent may be used alone or in combination.
  • Antiwear Agent The lubricating composition contains an antiwear agent.
  • the antiwear agent is a metal hydrocarbyl dithiophosphate.
  • the hydrocarbyl group in one embodiment in an alkyl or cycloalkyl group with 1 to 30, in another embodiment 3 to 10 and in yet another embodiment 3 to 8 carbon atoms.
  • the metal includes mono- or di- or tri- valent metal, in one embodiment divalent and in another embodiment a divalent transition metal.
  • the metal is zinc, in another embodiment calcium or barium.
  • a metal hydrocarbyl dithiophosphate examples include zinc dihydrocarbyl dithiophosphates (often referred to as ZDDP, ZDP or ZDTP).
  • suitable zinc hydrocarbyl dithiophosphates compounds may include the reaction product(s) of heptylated or octylated or nonylated dithiophosphoric acids with ethylene diamine, morpholine or mixtures thereof.
  • the antiwear agent is ashless i.e. the antiwear agent is metal-free (prior to mixture with other components). Often the metal-free antiwear agent is an amine salt.
  • the ashless antiwear agent often contains an atom including sulphur, phosphorus, boron or mixtures thereof.
  • the amine is often a primary amine, a secondary amine a tertiary amine or mixtures thereof. Often a primary amine and/or a secondary amine will contain at least one hydrocarbyl group with the number of carbon atoms present from 2 to 30, in one embodiment 8 to in one embodiment 26, in another embodiment 10 to 20, and in yet another embodiment 11 to 18.
  • Examples of primary amines useful in the present invention include ethylamine, propylamine, butylamine, 2-ethylhexylamine, octylamine and dodecylamine.
  • suitable secondary amines include dimethylamine, diethylamine, dipropylamine, dibutylamine, diamylamine, dihexylamine, diheptylamine, methylethylamine, ethylbutylamine and ethyl amylamine.
  • the secondary amines may be cyclic amines such as piperidine, piperazine and morpholine.
  • the amine may also be a tertiary-aliphatic primary amine.
  • the aliphatic group is an alkyl group containing a number of carbon atoms from 2 to 30, in one embodiment 6 to 26 and in another embodiment 8 to 24.
  • the tertiary alkyl primary amines are monoamines such as tert-butylamine, terthexylamine, 1 -methyl- 1-amino-cyclohexane, tert-octylamine, tert- decylamine, tertdodecylamine, tert-tetradecylamine, tert-hexadecylamine, tert- octadecylamine, terttetracosanylamine, and tert-octacosanylamine.
  • Mixtures of amines may also be used in the invention.
  • Primene 8 IR and Primene JMT are mixtures of C 11 to C 14 tertiary alkyl primary amines and C 18 to C 22 tertiary alkyl primary amines respectively.
  • the ashless antiwear agent may also include phosphoric acid esters or salt thereof; dialkyldithiophosphoric acid esters or salt thereof; phosphites; and phosphorus-containing carboxylic esters, ethers, and amides or mixtures thereof.
  • Other ashless antiwear agent compounds include sulphur-containing ashless anti-wear additives are thiocarbamate-containing compounds, such as thiocarbamate esters, thiocarbamate amides, thiocarbamic ethers, al&ylene- coupled thiocarbamates, and bis(S-alkyldithiocarbamyl) disulfides.
  • the di thiocarbamate-containing compounds may be prepared by reacting a dithiocarbamate acid or salt with an unsaturated compound.
  • the dithiocarbamate containing compounds may also be prepared by simultaneously reacting an amine, carbon disulfide and an unsaturated compound. Generally, the reaction occurs at a temperature from 25 0 C tol25°C.
  • US Patents 4,758,362 and 4,997,969 describe dithiocarbamate compounds and methods of making them.
  • Useful fatty amines include commercially available fatty amines such as "Armeen”® amines Cproducts available from Akzo Chemicals, Chicago, Illinois), such as Akzo's, Armeen C, Armeen O, Armeen OL, Arr ⁇ een T, Armeen HT, Armeen S and Armeen SD, wherein the letter designation relates to the fatty group, such as coco, oleyl, tallow, or stearyl groups.
  • the ashless a.ntiwear agent may be a monoester of a polyol and an aliphatic carboxylic acid, often an acid containing 12 to 24 carbon atoms.
  • the monoester of a polyol and an aliphatic carboxylic acid is in the form of a mixture with a sunflower oil or the like, which may be present in the friction modifier mixture from 5 to 95, in one embodiment 10 to 9O, in another embodiment 20 to 85 and in yet another embodiment 20 to 80 weight percent of said mixture.
  • the aliphatic carboxylic acids which form the esters are those acids containing 12 to 24 carbon atoms and in one embodiment 14 to 20 carbon atoms. Examples of carboxylic acids include dodecanoic acid, stearic acid, lauric acid, behenic acid, and oleic acid.
  • Polyols include diols, triols, and alcohols with higher numbers of alcoholic OH groups .
  • Polyhydric alcohols include ethylene glycols, including di-, tri- and tetraethylene glycols; propylene glycols, including di-, tri- and tetrapropylene glycols; glycerol; butane diol; hexane diol; sorbitol; arabitol; mannitol; sucrose; fructose; glucose; cyclohexane diol; erythritol; and pentaerythritols, including di- and tripentaerythritol.
  • the polyol is diethyl- ene glycol, triethylene glycol, glycerol, sorbitol, pentaerythxitol or dipentaerythritol .
  • glycerol monooleate The commercially available monoester known as "glycerol monooleate” is believed to include 60 + 5 percent by weight of the chemical species glycerol monooleate, along with 35 + 5 percent glycerol dioleate, and less than 5 percent trioleate and oleic acid.
  • the amounts of the monoesters, described above, are calculated based on the actual, corrected, amount of polyol monoester present in any such mixture.
  • the antiwear agent may be used alone or in combination.
  • the substrates include a substituted phenol (forms a phenate), a sulphur bridging substituted phenol (forms a sulphurised phenate), a sulphonic acid (forms a sulptionate (often a calcium sulphonate detergent with a TBN ranging from 300 to 500, or 330 to 450), a carboxylic acid (forms a carboxylate), a phosphorus acid (forms a phosphonate), a mono- and/or a di- thiophosphoric acid (forms a thiophosphonate) , a saligenin, an alkyl salicyclic acid (forms alkylsalicylates), a salixarate; dispersants include N-substituted long chain alkenyl succinimides as well as posted treated versions thereof; post-treated dispersants include those by reaction with urea, thiourea, dimercaptothiadiazoles, carbon dis
  • Example 4 is the same as Example 3, except the oleyl amine is present at 0.2 wt %.
  • Synalox® 1 O0-120B present at 0.1 wt %.
  • Example 6 is the same as Example 5, except the corrosion inhibitor is
  • the PV1401 is a Volkswagen corrosion prevention test.
  • the test requires submersing steel plates in an oil of lubricating "viscosity followed by draining the oil off the plate and then suspending the plate in a sealed moist chamber at 50 0 C and 100 % humidity.
  • the plates are then analysed to determine the amount of corrosion by classifying the degree of corrosion on a scale of 1 to 5 summarised in Table 1: Table 1
  • the lubricating composition of the invention with a sulphated ash content of 0.8 wt % or less has improved corrosion inhibition without adversely affecting antiwear performance over a similar composition containing a sulphated ash content of above 1 wt %.
  • the invention provides a lubricating composition with corrosion inhibition and antiwear performance in a low sulphated ash engine lubricant.
  • hydrocarbyl substituent or “hydrocarbyl group” is used in its ordinary sense, which is well-known to those skilled in the art. Specifically, it refers to a group having a carbon atom directly attached to the remainder of the molecule and having predominantly hydrocarbon character.

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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

La présente invention concerne une composition lubrifiante contenant (a) une huile de viscosité lubrifiante, (b) un inhibiteur de la corrosion et (c) un agent anti-usure qui renferme au moins un élément parmi (i) un alcool polyhydrique avec des groupes d'oxyalkylène, (ii) un amine gras ou (iii) des mélanges correspondants, ladite composition lubrifiante possédant un contenu de cendres sulfatées total inférieur à 0,8 % en poids. Cette invention a aussi pour objet l'utilisation de la composition lubrifiante dans un moteur de combustion interne.
PCT/US2005/038319 2004-10-25 2005-10-21 Inhibition de la corrosion WO2006047486A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA002584779A CA2584779A1 (fr) 2004-10-25 2005-10-21 Inhibition de la corrosion
CN2005800438087A CN101084295B (zh) 2004-10-25 2005-10-21 包含腐蚀抑制剂的润滑组合物
EP05817058A EP1824950A1 (fr) 2004-10-25 2005-10-21 Inhibition de la corrosion
US11/577,748 US20090156446A1 (en) 2004-10-25 2005-10-21 Corrosion Inhibition
JP2007538158A JP2008518059A (ja) 2004-10-25 2005-10-21 腐食防止

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62187404P 2004-10-25 2004-10-25
US60/621,874 2004-10-25

Publications (1)

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WO2006047486A1 true WO2006047486A1 (fr) 2006-05-04

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US (1) US20090156446A1 (fr)
EP (1) EP1824950A1 (fr)
JP (1) JP2008518059A (fr)
CN (1) CN101084295B (fr)
CA (1) CA2584779A1 (fr)
WO (1) WO2006047486A1 (fr)

Cited By (66)

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WO2010096291A1 (fr) 2009-02-18 2010-08-26 The Lubrizol Corporation Composés et procédé de lubrification d'un moteur à combustion interne
WO2010099136A1 (fr) 2009-02-26 2010-09-02 The Lubrizol Corporation Compositions lubrifiantes contenant le produit de réaction d'une amine aromatique et d'un polymère à fonctionnalité carboxylique et un dispersant
WO2011022266A2 (fr) 2009-08-18 2011-02-24 The Lubrizol Corporation Composition lubrifiante contenant un agent anti-usure
WO2011022245A1 (fr) 2009-08-18 2011-02-24 The Lubrizol Corporation Composition lubrifiante contenant un agent anti-usure
WO2011022317A1 (fr) 2009-08-18 2011-02-24 The Lubrizol Corporation Composition lubrifiante contenant un agent anti-usure
WO2011075401A1 (fr) 2009-12-14 2011-06-23 The Lubrizol Corporation Composition lubrifiante contenant un composé nitrile
WO2011075403A1 (fr) 2009-12-14 2011-06-23 The Lubrizol Corporation Composition lubrifiante contenant un agent anti-usure
WO2011081835A1 (fr) 2009-12-14 2011-07-07 The Lubrizol Corporation Composition lubrifiante contenant un agent anti-usure
WO2011084657A1 (fr) 2009-12-17 2011-07-14 The Lubrizol Corporation Composition lubrifiante contenant un composé aromatique
WO2011146692A1 (fr) 2010-05-20 2011-11-24 The Lubrizol Corporation Composition lubrifiante contenant un dispersant
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US20090156446A1 (en) 2009-06-18

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