Classifications

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  • 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
  • C10M141/12—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 compound containing atoms of elements not provided for in groups C10M141/02 - C10M141/10
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  • 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
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  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
  • C10M169/04—Mixtures of base-materials and additives
  • C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
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  • 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
  • C10M2203/1025—Aliphatic fractions used as base material
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  • 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
  • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
  • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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  • 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
  • C10M2207/26—Overbased carboxylic acid salts
  • C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
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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
  • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
  • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
  • C10M2215/064—Di- and triaryl amines
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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
  • C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty 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
  • C10M2215/22—Heterocyclic nitrogen compounds
  • C10M2215/223—Five-membered rings containing nitrogen and carbon only
• • 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
  • C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
  • C10M2215/28—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
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
  • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms 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
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
  • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
  • C10M2219/085—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing carboxyl groups; Derivatives thereof
• • 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
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
  • C10M2229/02—Unspecified siloxanes; Silicones
• • 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
  • 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
  • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
  • C10N2020/01—Physico-chemical properties
  • C10N2020/04—Molecular weight; Molecular weight distribution
• • 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
  • C10N2030/40—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
  • C10N2030/44—Boron free or low content boron 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
  • C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
  • C10N2060/14—Chemical after-treatment of the constituents of the lubricating composition by boron or a compound containing boron

Definitions

• the present invention relates to a lubricating oil composition for an internal combustion engine, and more particularly to a lubricating oil composition for an internal combustion engine that has good wear resistance to an aluminum material even when the amount of metal derived from phosphorus or a metallic detergent is reduced.
• exhaust gases include particulate substances (PM), hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NO) x ) and the like, and the regulation values for PM and NOx are very strict.
• a gasoline vehicle is equipped with a three-way catalyst, and a diesel vehicle is equipped with a diesel particulate filter (DPF). This cleans the exhaust gas and releases it to the atmosphere.
• DPF diesel particulate filter
• the present invention is a lubricating oil composition having excellent wear resistance against an aluminum material, and contains ZnDTP and a metal-based detergent containing a large amount of phosphorus while maintaining the wear resistance against the aluminum material. It is an object of the present invention to provide a lubricating oil composition for an internal combustion engine that can significantly reduce the above.
• the inventor has determined the nitrogen content and boron content derived from the imide dispersant and the boronated imide dispersant. It was found that the purpose can be achieved by adjusting. The present invention has been completed based on such findings.
• the present invention 1.
• Nitrogen content (N mass%) derived from a fluorinated imide dispersant or a boronated imide dispersant and a non-borated imide dispersant is represented by the following formula (I) N ⁇ B + 0.05 (I) And that the phosphorus content (P mass%) and the metal detergent-derived metal component content (M mass%) satisfy any of the following A to C based on the total amount of the composition:
• a lubricating oil composition for an internal combustion engine A: P ⁇ 0.03 and M ⁇ 0.05 B: P ⁇ 0.03 and 0.05 ⁇ M ⁇ 0.12 C: 0.03 ⁇ P ⁇ 0.06 and M ⁇ 0.05 2.
• the sulfur type antiwear agent are represented by the following general formula (3): R 1 OOC-A 1 -S 2 -A 2 -COOR 2 (3) (Wherein R 1 and R 2 are each independently an oxygen atom, a sulfur atom, or a hydrocarbon group having 1 to 30 carbon atoms which may contain a nitrogen atom, A 1 and A 2 are each independently (It represents a divalent hydrocarbon group having 1 to 12 carbon atoms.)
• a lubricating oil composition having excellent wear resistance to an aluminum material, which significantly reduces ZnDTP and metal-based detergents containing a large amount of phosphorus while maintaining wear resistance to the aluminum material.
• a lubricating oil composition for an internal combustion engine can be provided. Therefore, it is possible to provide a lubricating oil composition for an internal combustion engine that can reduce the influence on the exhaust gas aftertreatment device while maintaining the wear resistance of the aluminum material.
• the lubricating oil composition for internal combustion engines of the present invention comprises a boronated imide dispersant or a boronated imide dispersant and a non-borated imide dispersant, and the boronated imide dispersant in the composition
• the boron content (B mass%) derived from and the nitrogen content (N mass%) derived from a boronated imide dispersant or a boronated imide dispersant and a non-borated imide dispersant are represented by the following formula (I ) N ⁇ B + 0.05 (I) It is the lubricating oil composition for internal combustion engines which satisfy
• composition satisfying the above formula (I) can improve the wear resistance.
• fills can further raise the said effect.
• a borated imide dispersant and, if necessary, a non-borated imide dispersant are used.
• the non-borated imide-based dispersant is usually referred to as an imide-based dispersant.
• polybutenyl succinimide is preferable to use as the non-boronated imide dispersant. Examples of the polybutenyl succinimide include the following general formulas (1) and (2)
• PIB in these general formulas represents a polybutenyl group, and the number average molecular weight thereof is usually 800 to 3500, preferably 900 to 2000. If the number average molecular weight is 800 or more, the dispersibility is not inferior, and if it is 3500 or less, the storage stability is not inferior. Further, n in the above general formulas (1) and (2) is usually an integer of 1 to 5, more preferably an integer of 2 to 4, so that the dispersibility is not inferior.
• the method for producing the polybutenyl succinimide is not particularly limited, but can be produced by a known method.
• it can be obtained by reacting polybutenyl succinic acid obtained by reacting polybutene and maleic anhydride at 100 to 200 ° C. with polyamines such as diethylenetriamine, triethylenetetramine, tetraethylenepentamine and pentaethylenehexamine. Can do.
• boronated imide dispersant used in the present invention a boronated polybutenyl obtained by allowing a boron compound to act on the non-borated imide dispersant exemplified in the general formulas (1) and (2). It is preferable to use succinimide.
• Examples of the boron compound include boric acid, borates, and borate esters.
• Examples of the boric acid include orthoboric acid, metaboric acid, and paraboric acid.
• Examples of the borate include ammonium salts such as ammonium borate such as ammonium metaborate, ammonium tetraborate, ammonium pentaborate and ammonium octaborate.
• Examples of borate esters include esters of boric acid and alkyl alcohols (preferably having 1 to 6 carbon atoms) such as monomethyl borate, dimethyl borate, trimethyl borate, monoethyl borate, diethyl borate, triethyl borate.
• Preferred examples include monopropyl borate, dipropyl borate, tripropyl borate, monobutyl borate, dibutyl borate and tributyl borate.
• the mass ratio B / N between the boron content B and the nitrogen content N is preferably 0.1 to 3, more preferably 0.2 to 2.
• the content of the boronated succinimide dispersant and the non-borated succinimide dispersant (imide dispersant) is expressed by the formula (I). However, it is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass. If it is 0.1% by mass or more, good cleanability and dispersibility can be obtained, and if it is 15% by mass or less, effects of cleanliness and dispersibility commensurate with the content can be obtained.
• the phosphorus content (P mass%) and the metal component content (M mass%) derived from the metallic detergent satisfy any of the above-mentioned A to C. It takes a thing.
• a to C will be described below.
• P ⁇ 0.03 and M ⁇ 0.05 That is, the phosphorus content is less than 0.03% by mass based on the total amount of the composition, and the metal component content derived from the metal detergent is less than 0.05% by mass.
• the phosphorus content in the composition is less than 0.03% by mass, the poisoning action of the active sites of the three-way catalyst is suppressed, and the catalyst life can be extended.
• the phosphorus content in the composition is preferably 0.01% by mass or less, more preferably 0.005% by mass or less, and particularly preferably 0.001% by mass or less.
• the metal component derived from the metal detergent in the said composition is less than 0.05 mass%, it can suppress that the ash derived from a metal component deposits on DPF, and can extend the lifetime. Therefore, the content of the metal component in the composition is preferably 0.01% by mass or less, more preferably 0.005% by mass or less, and particularly preferably 0.001% by mass or less.
• the phosphorus content in the composition is less than 0.03% by mass based on the total amount of the composition, and the content of the metal component derived from the metal detergent is 0.05% by mass or more and 0.12% by mass or less.
• the phosphorus content in the composition is preferably 0.01% by mass or less, more preferably 0.005% by mass or less, and particularly preferably 0.001% by mass or less.
• ZnDTP zinc dithiophosphate
• the content of the metal component derived from the metal type detergent in the said composition is 0.05 mass% or more, the cleanability requested
• the content of the metal component is 0.12% by mass or less, the ash content derived from the metal component is suppressed from being deposited on the DPF, and the lifetime can be extended. Therefore, the content of the metal component is preferably 0.05% by mass or more and 0.10% by mass or less, and particularly preferably 0.05 or more and 0.08% by mass or less.
• the metal detergent that provides the metal component include sulfonates, phenates, salicylates, and naphthenates of alkali metals (Na, K, etc.) or alkaline earth metals (Ca, Mg, Ba, etc.). Of these, Ca sulfonate, Ca phenate, and Ca salicylate are preferable. Further, these metal-based detergents preferably have a base number of 0 to 500 mgKOH / g, more preferably 150 to 400 mgKOH / g, and particularly preferably 200 to 350 mgKOH / g by the perchloric acid method.
• the said metal type detergent may be used individually by 1 type, and may be used in combination of 2 or more type. What is necessary is just to select suitably content of the said metal type detergent so that it may become content of the metal component derived from said metal type detergent.
• the phosphorus content is 0.03% by mass or more and 0.06% by mass or less based on the total amount of the composition, and the content of the metal component derived from the metal detergent is less than 0.05% by mass.
• the wear resistance can be further improved.
• the phosphorus content is 0.06% by mass or less, the poisoning action of the active site of the three-way catalyst can be suppressed, and the catalyst life can be extended.
• the phosphorus content is more preferably 0.03% by mass or more and 0.05% by mass or less.
• Typical phosphorus antiwear agents include dithiophosphate metals such as zinc dithiophosphate (ZnDTP) and molybdenum dithiophosphate (MoDTP), phosphoric acid or phosphites (organic phosphate, organic phosphorous acid). Ester, alkyl or aryl acid phosphate, alkyl or aryl hydrogen phosphite, and amine salts thereof), thiophosphates, and thiophosphites.
• dithiophosphate metals such as zinc dithiophosphate (ZnDTP) and molybdenum dithiophosphate (MoDTP)
• phosphoric acid or phosphites organic phosphate, organic phosphorous acid. Ester, alkyl or aryl acid phosphate, alkyl or aryl hydrogen phosphite, and amine salts thereof), thiophosphates, and thiophosphites.
• zinc dithiophosphate that is, zinc dihydrocarbyl dithiophosphate (the hydrocarbyl group is preferably an alkyl group having 1 to 18 carbon atoms, more preferably 2 to 12 carbon atoms, an alkenyl group, an arylalkyl group or an alkaryl group.
• zinc dialkyldithiophosphate having a secondary alkyl group having 3 to 8 carbon atoms is preferred.
• the content of the metal component derived from the metallic detergent in the composition is less than 0.05% by mass, the ash content derived from the metal component is suppressed from being deposited on the DPF, and the life thereof is extended. Can do. Therefore, the content of the metal component in the composition is preferably 0.01% by mass or less, more preferably 0.005% by mass or less, and particularly preferably 0.001% by mass or less.
• the lubricating oil composition for internal combustion engines of the present invention preferably further contains a sulfur-based antiwear agent.
• sulfur-based antiwear agent sulfur-based antiwear agents that do not contain phosphorus, such as sulfurized fats and oils, sulfurized fatty acids, sulfurized esters, sulfurized olefins, and dihydrocarbyl polysulfide are preferable.
• R 1 OOC-A 1 -S 2 -A 2 -COOR 2 (3) (Wherein R 1 and R 2 are each independently an oxygen atom, a sulfur atom, or a hydrocarbon group having 1 to 30 carbon atoms which may contain a nitrogen atom, A 1 and A 2 are each independently (It represents a divalent hydrocarbon group having 1 to 12 carbon atoms.)
• the disulfide compound represented by these is preferable.
• sulfur-containing compound represented by the general formula (3) include bis (methoxycarbonylmethyl) disulfide, bis (ethoxycarbonylmethyl) disulfide, bis (n-propoxycarbonylmethyl) disulfide, bis (isopropoxycarbonylmethyl).
• Disulfide bis (n-butoxycarbonylmethyl) disulfide, bis (n-octoxycarbonylmethyl) disulfide, bis (n-dodecyloxycarbonylmethyl) disulfide, bis (cyclopropoxycarbonylmethyl) disulfide, 1,1-bis ( 1-methoxycarbonylethyl) disulfide, 1,1-bis (1-methoxycarbonyl-n-propyl) disulfide, 1,1-bis (1-methoxycarbonyl-n-butyl) disulfide, 1,1- (1-methoxycarbonyl-n-hexyl) disulfide, 1,1-bis (1-methoxycarbonyl-n-octyl) disulfide, 1,1-bis (1-methoxycarbonyl-n-dodecyl) disulfide, 2,2 -Bis (2-methoxycarbonyl-n-propyl) disulfide, ⁇ , ⁇
• the content of the above sulfur-based antiwear agent is preferably 0.05 to 5% by mass, more preferably 0.1 to 3% by mass, based on the total amount of the composition. If the blending amount is 0.05% by mass or more, sufficient wear resistance is obtained, and if it is 5% by mass or less, there is no possibility of corrosion.
• the lubricating oil composition of the present invention is an additive used for a lubricating oil composition such as a conventionally known lubricating oil for an internal combustion engine as long as it does not impair the conditions such as the phosphorus content and metal components required by the present invention. May be blended.
• a lubricating oil composition such as a conventionally known lubricating oil for an internal combustion engine
• a lubricating oil composition such as a conventionally known lubricating oil for an internal combustion engine as long as it does not impair the conditions such as the phosphorus content and metal components required by the present invention. May be blended.
• other friction reducing agents include ashless friction reducing agents such as fatty acid esters, aliphatic amines, and higher alcohols.
• viscosity index improver examples include so-called non-dispersible viscosity index improvers such as various methacrylate esters or copolymers and hydrogenated products thereof, and various methacrylate esters containing nitrogen compounds. Examples thereof include so-called dispersed viscosity index improvers that are copolymerized.
• non-dispersed or dispersed ethylene- ⁇ -olefin copolymers for example, propylene, 1-butene, 1-pentene etc.
• hydrides thereof polyisobutylene and hydrogenated products thereof
• styrene- Examples include diene hydrogenated copolymers, styrene-maleic anhydride copolymers, and polyalkylstyrenes.
• the molecular weight (number average molecular weight) of these viscosity index improvers is, for example, 5,000 to 1,000,000, preferably 100,000 to 800,000 for dispersed and non-dispersed polymethacrylates, 800 to 5,000 for polyisobutylene or hydrides thereof, and ethylene- ⁇ . -800 to 300,000, preferably 10,000 to 200,000 for the olefin copolymer and its hydride.
• antioxidants examples include phenol-based antioxidants and amine-based antioxidants.
• phenolic antioxidants include 4,4′-methylenebis (2,6-di-t-butylphenol); 4,4′-bis (2,6-di-t-butylphenol); 4,4′- Bis (2-methyl-6-tert-butylphenol); 2,2′-methylenebis (4-ethyl-6-tert-butylphenol); 2,2′-methylenebis (4-methyl-6-tert-butylphenol); 4 4,4′-butylidenebis (3-methyl-6-tert-butylphenol); 4,4′-isopropylidenebis (2,6-di-tert-butylphenol); 2,2′-methylenebis (4-methyl-6- Nonylphenol); 2,2′-isobutylidenebis (4,6-dimethylphenol); 2,2′-methylenebis (4-methyl-6-cyclohexylphenol); 2,6-di t-butyl-4-methylphenol; 2,6
• amine antioxidants include monooctyl diphenylamine; monoalkyl diphenylamines such as monononyl diphenylamine; 4,4′-dibutyldiphenylamine; 4,4′-dipentyldiphenylamine; 4,4′-dihexyldiphenylamine; 4,4′-diheptyldiphenylamine; 4,4′-dioctyldiphenylamine; dialkyldiphenylamines such as 4,4′-dinonyldiphenylamine; tetrabutyldiphenylamine; tetrahexyldiphenylamine; tetraoctyldiphenylamine; polyalkyldiphenylamine such as tetranonyldiphenylamine And naphthylamine type, specifically ⁇ -naphthylamine; phenyl- ⁇ -naphthylamine; and butylphenyl
• dialkyldiphenylamine type and naphthylamine type are preferable.
• the said antioxidant may select 1 type or may use it in combination of 2 or more type.
• rust preventive examples include alkylbenzene sulfonate, dinonyl naphthalene sulfonate, alkenyl succinate, polyhydric alcohol ester and the like. What is necessary is just to select suitably the mixture ratio of the said other additive in the range normally used.
• the lubricating oil composition of the present invention comprises a lubricating base oil (sometimes simply referred to as “base oil”) containing the various additives described above to obtain a lubricating oil composition having the desired performance.
• base oil sometimes simply referred to as “base oil”
• mineral oil mineral base oils
• synthetic base oils synthetic oils
• the mineral oil for example, a distillate obtained by atmospheric distillation of paraffinic crude oil, intermediate crude oil or naphthenic crude oil, or vacuum distillation residual oil, or Examples include refined oils obtained by refining according to a conventional method, such as solvent refined oils, hydrogenated refined oils, hydrocracked oils, dewaxed oils, and clay-treated oils. Furthermore, isomerized oils of waxes (such as slack wax) can also be used.
• examples of synthetic oils include poly ⁇ -olefins, polybutenes, polybutenes, polyol esters, and alkylbenzenes, which are ⁇ -olefin oligomers having 8 to 14 carbon atoms.
• 1 type of the said mineral oil may be used as a base oil, and may be used in combination of 2 or more type.
• the said synthetic oil may be used 1 type and may be used in combination of 2 or more type.
• one or more mineral oils and one or more synthetic oils may be used in combination.
• 70 mass% or more is preferable and, as for content of the base oil in a composition, 80 mass% or more is more preferable.
• the base oil has a kinematic viscosity at 100 ° C. of preferably 1.5 to 50 mm 2 / s, more preferably 3 to 30 mm 2 / s, and particularly preferably 3 to 15 mm 2 / s.
• the base oil preferably has a viscosity index of 80 or more, more preferably 90 or more, and particularly preferably 100 or more. When the viscosity index is 80 or more, the viscosity change due to the temperature of the base oil is small, and stable lubricating performance is exhibited.
• a base oil the thing whose sulfur content measured based on JISK2541 is 50 mass ppm or less is preferable. If the sulfur content is 50 mass ppm or less, there is an effect of improving the wear resistance of the low friction sliding material. A more preferable sulfur content is 30 mass ppm or less, and further 20 mass ppm or less.
• the base oil % C A measured by a ring analysis 3.0 it is preferably used in view of stability less.
• the% C A by ring analysis shows a proportion of aromatic content calculated by ring analysis n-d-M method (percentage). % C A is equal to or more than 3.0, indicate good oxidation stability. More preferable% C A is 1.0 or less, and further 0.5 or less.
• composition and performance of a lubricating oil composition for internal combustion engines were measured by the following methods.
• lubricating oil composition 1. Quantitative determination of boron, phosphorus and calcium Measured according to ASTM D5185. 2. Quantitative determination of nitrogen Measured according to JIS K2609. 3. Sulfur content Measured according to JIS K2541. ⁇ Performance of lubricating oil composition> 3.
• Base oil 1 hydrorefined mineral oil (100N), 40 ° C. kinematic viscosity 21.0 mm 2 / s, 100 ° C. kinematic viscosity 4.5 mm 2 / s, viscosity index 127, sulfur content less than 5 mass ppm
• Base oil 1 hydrorefined mineral oil (100N), 40 ° C. kinematic viscosity 21.0 mm 2 / s, 100 ° C. kinematic viscosity 4.5 mm 2 / s, viscosity index 127, sulfur content less than 5 mass ppm
• Boronated imide 1 polybutenyl succinic acid monoimide borate: number average molecular weight of polybutenyl group 950, base number (perchloric acid method) 30.6 mgKOH / g, nitrogen content 1.8% by mass, boron Content 2.1% by mass
• Boronated imide 2 polybutenyl succinic acid bisimide borate: number average mo
• Tables 1 and 2 show the following.
• the lubricating oil composition of the present invention satisfying the formula (I) is excellent in wear resistance against aluminum materials (Examples A1 to A10).
• the wear resistance of the lubricating oil compositions of Examples A4 to A8 satisfying the formula (II) to the aluminum material is further excellent.
• the lubricating oil composition not satisfying the formula (I) is inferior in abrasion resistance to the aluminum material as compared with the present invention of Examples A1 to A10 (Comparative Examples A1 to A8).
• the lubricating oil compositions of the present invention (Examples A1 to A10) have good wear resistance even if they do not contain the P component, and the P component content and the metal component derived from the metal detergent Since both contents are extremely small, it is extremely excellent in the effect of preventing poisoning of the three-way catalyst and the effect of suppressing the decrease in the life of the DPF.
• the components used for the preparation of the lubricating oil composition and the methods for measuring the composition and performance are the same as those in Examples A1 to A10 and Comparative Examples A1 to A8.
• Tables 3 and 4 show the following.
• the lubricating oil composition of the present invention satisfying the formula (I) has excellent wear resistance against aluminum materials (Examples B1 to B9).
• the wear resistance of the lubricating oil compositions of Examples B5 to B8 satisfying the formula (II) to the aluminum material is further excellent.
• any lubricating oil composition not satisfying the formula (I) is inferior in wear resistance to the aluminum material (Comparative Examples B1 to B7).
• the lubricating oil compositions of the present invention (Examples B1 to B9) have good wear resistance even if they contain almost no P content, and the poison content of the three-way catalyst is extremely low because the P content is very small. Excellent prevention effect.
• the content of the metal component derived from the metal-based detergent is 0.05% by mass or more and contains a metal detergent, so that the cleanability is very good, while the content of the metal component derived from the metal-based detergent is Since it is 0.12 mass% or less, the effect which suppresses the lifetime reduction of DPF is also favorable.
• the components used for the preparation of the lubricating oil composition and the methods for measuring the composition and performance are the same as those in Examples A1 to A10 and Comparative Examples A1 to A8.
• Tables 5 and 6 show the following.
• the lubricating oil composition of the present invention satisfying the formula (I) has excellent wear resistance against aluminum materials (Examples C1 to C10).
• the wear resistance of the lubricating oil compositions of Examples C5 to C8 satisfying the formula (II) to the aluminum material is further excellent.
• any lubricating oil composition that does not satisfy the formula (I) is inferior in wear resistance to the aluminum material (Comparative Examples C1 to C8).
• the lubricating oil compositions (Examples C1 to C10) of the present invention have a P content of 0.03% by mass or more, they are further excellent in wear resistance.
• the P content is 0.06% by mass or less, the poisoning prevention effect of the three-way catalyst is also good. Moreover, since the metal content is less than 0.05% by mass, the effect of suppressing the decrease in the lifetime of the DPF is extremely excellent.
• the lubricating oil composition for an internal combustion engine of the present invention is excellent in wear resistance against aluminum materials, and greatly maintains ZnDTP and metal detergent containing a large amount of phosphorus while maintaining wear resistance against aluminum materials.
• a lubricating oil composition for an internal combustion engine that can be reduced can be provided. Therefore, it can be usefully used as a lubricating oil composition for an internal combustion engine that can reduce the influence on the exhaust gas aftertreatment device of the internal combustion engine using the aluminum material.

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• 2012
  • 2012-08-03 WO PCT/JP2012/069911 patent/WO2013018907A1/ja not_active Ceased
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