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
  • C10M141/12—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
• • 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
  • C10M163/00—Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
• • 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
  • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
• • 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
  • C10M2203/1025—Aliphatic fractions used as base material
• • 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
  • C10M2207/023—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
• • 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
  • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
  • C10M2207/028—Overbased salts 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
  • 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
• • 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
  • C10M2207/28—Esters
  • C10M2207/287—Partial esters
  • C10M2207/289—Partial esters containing free 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
  • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
  • C10M2209/084—Acrylate; Methacrylate
• • 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
  • C10M2215/06—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
• • 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
  • C10M2215/28—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
  • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
  • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
• • 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
  • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
  • C10M2219/046—Overbasedsulfonic acid salts
• • 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
  • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
  • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
  • C10M2227/066—Organic compounds derived from inorganic acids or metal salts derived from Mo or W
• • 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
  • C10N2010/02—Groups 1 or 11
• • 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
  • C10N2020/02—Viscosity; Viscosity index
• • 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
  • C10N2030/08—Resistance to extreme temperature
• • 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
  • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
• • 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
  • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
  • C10N2030/54—Fuel economy
• • 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
  • C10N2030/74—Noack Volatility
• • 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

Definitions

• the present invention relates to a lubricating oil composition used for internal combustion engines such as diesel engines, gasoline engines, gas engines, and hybrid vehicle engines.
• pistons made of aluminum alloy have a thermal and mechanical endurance temperature of about 350 ° C. and a large amount of thermal expansion. Therefore, there is an improvement in response to the recent demand for higher output and lower fuel consumption of automobile engines.
• a cast iron piston having a thermal and mechanical endurance temperature of up to about 400 ° C. is partially employed.
• the cast iron piston has higher durability than a piston made of an aluminum alloy and also has good seizure resistance because graphite contained in the cast iron has self-lubricating properties.
• cast iron pistons are more likely to cause engine performance degradation because they have higher wear and lower cleanliness due to the high temperature near the piston top dead center than aluminum alloys.
• the present invention can prevent deterioration in engine performance even when used in an internal combustion engine for automobiles that can achieve higher output and lower fuel consumption by increasing the thermal and mechanical durability temperatures than in the past.
• An object of the present invention is to provide a lubricating oil composition capable of satisfying both the durability and the durability.
• the present inventor can solve the above-mentioned problems by mixing them under specific conditions in a lubricating oil composition having a base oil, a dispersant, and a metallic detergent. As a result, the present invention has been completed.
• the lubricating oil composition according to the present invention comprises a base oil containing at least one selected from mineral oil and synthetic oil, having a viscosity index of 120 or more, and a paraffin content by ring analysis of 70% or more, and (A ) A dispersant containing at least one compound selected from alkenyl succinimide, alkenyl succinimide borate, alkyl succinimide, and alkyl succinimide borate, and (B) alkali metal sulfonate, alkali A metal detergent containing at least one compound selected from metal phenate, alkali metal salicylate, alkaline earth metal sulfonate, alkaline earth metal phenate, and alkaline earth metal salicylate, and component (A) Is 0.01% by mass or more and 0.10% by mass or less in terms of nitrogen content based on the total composition And (B) component is contained in an amount of 0.01% by mass or more and 0.3% by mass or less in terms of metal content based
• the method for producing a lubricating oil composition according to the present invention includes a base oil containing at least one selected from mineral oil and synthetic oil, having a viscosity index of 120 or more and a paraffin content by ring analysis of 70% or more.
• the present invention it is possible to prevent deterioration in engine performance even when used in an internal combustion engine for automobiles that can achieve higher output and lower fuel consumption by increasing the thermal and mechanical durability temperatures than in the past. It is possible to provide a lubricating oil composition capable of satisfying both of the above durability.
• the lubricating oil composition comprises a base oil containing at least one selected from mineral oil and synthetic oil, having a viscosity index of 120 or more and a paraffin content by ring analysis of 70% or more, and (A) alkenyl A dispersant containing at least one compound selected from succinimide, alkenyl succinimide borate, alkyl succinimide, and alkyl succinimide borate, and (B) alkali metal sulfonate, alkali metal phenate And a metal detergent containing at least one compound selected from alkali metal salicylates, alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates.
• the component (A) is contained in an amount of 0.01% by mass or more and 0.10% by mass or less in terms of nitrogen content based on the total composition amount, and the component (B) is 0.01 mass in terms of metal content based on the total amount of composition. % To 0.3% by mass.
• 1 or more types of compounds chosen from the boride of this alkenyl succinimide in the (A) component, and the boride of the alkyl succinimide are contained, and the mass ratio of the boron and nitrogen contained in (A) component is contained.
• a certain B / N ratio is 0.5 or more.
• the phosphorus content on the basis of the total composition amount is 100 mass ppm or more and 1200 mass ppm or less, and the sulfated ash content on the basis of the total composition amount is 1.1 mass% or less.
• the lubricating oil composition according to the present invention may be simply referred to as “the present composition”.
• the base oil of the composition may be mineral oil or synthetic oil.
• mineral oil for example, a lubricating oil fraction obtained by distillation under reduced pressure of atmospheric residual oil obtained by atmospheric distillation of crude oil can be desolvated, solvent extracted, hydrocracked, solvent dewaxed, catalytic dehydrated.
• Mineral oil refined by one or more treatments such as wax, hydrorefining, or the like, or mineral oil produced by isomerizing wax, GTL WAX, and the like.
• Synthetic oils include, for example, polybutene, polyolefins [ ⁇ -olefin homopolymers and copolymers (eg, ethylene- ⁇ -olefin copolymers)], various esters (eg, polyol esters, dibasic acid esters, phosphorus Acid ester, etc.), various ethers (eg, polyphenyl ether), polyglycol, alkylbenzene, alkylnaphthalene and the like.
• polyolefins and polyol esters are particularly preferred from the viewpoints of viscosity characteristics, solubility of additives, and compatibility with seal rubbers.
• one kind of the mineral oil may be used, or two or more kinds may be used in combination.
• 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.
• the viscosity of the base oil usually, 2 mm 2 / s or more 30 mm 2 / s or less, preferably 3 mm 2 / s or more 15 mm 2 / s or less, particularly preferably 4 mm 2 / s or more 10 mm 2 / s or less.
• the kinematic viscosity at 100 ° C. is 2 mm 2 / s or more, the evaporation loss is small, and when it is 30 mm 2 / s or less, the power loss due to the viscous resistance is suppressed, and the fuel efficiency improvement effect is obtained.
• the base oil has a paraffin content (may be described as% CP) by ring analysis of 70% or more.
• % CP is less than 70%, the oxidation stability is poor, and an increase in acid value and sludge are likely to occur.
• the% CP is preferably 80% or more.
• the viscosity index of the base oil is 120 or more. Preferably, it is 125 or more, more preferably 130 or more.
• the base oil having a viscosity index of less than 120 has a large viscosity change due to a change in temperature, and a fuel efficiency improvement effect at a low temperature is reduced.
• the component (A) is a dispersant containing one or more compounds selected from alkenyl succinimides, alkenyl succinimide borides, alkyl succinimides, and alkyl succinimide borides.
• the component (A) is an alkenyl succinimide, an alkenyl succinimide borate, an alkyl succinimide, and an alkyl succinimide borate, and the alkenyl succinimide borate.
• alkyl succinimide borides is essential.
• a high temperature detergency is improved because a component contains the boride of an alkenyl succinimide or an alkyl succinimide.
• the succinimide includes a monoimide structure and a bisimide structure.
• the monoimide structure includes both a structure based on a single alkenyl or alkyl succinic acid monoimide and a structure based on a boride of alkenyl or alkyl succinic monoimide.
• Examples of the alkenyl or alkyl succinic acid monoimide include alkenyl or alkyl succinic acid monoimide represented by the following formula (1).
• the bisimide structure includes both a structure based on an alkenyl or alkyl succinic acid bisimide alone and a structure based on a boride of an alkenyl or alkyl succinic acid bisimide.
• Examples of the alkenyl or alkyl succinic acid bisimide include alkenyl or alkyl succinic acid bisimide represented by the following formula (2).
• R 1 , R 3 and R 4 are alkenyl groups or alkyl groups, and the mass average molecular weights are preferably 500 or more and 3,000 or less, respectively, more preferably 1 3,000 to 3,000.
• the mass average molecular weight of R 1 , R 3 and R 4 described above is 500 or more, the solubility in the base oil increases, and when it is 3,000 or less, the effect of cleanliness can be expected.
• R 3 and R 4 may be the same or different.
• R 2 , R 5 and R 6 are each an alkylene group having 2 to 5 carbon atoms, and R 5 and R 6 may be the same or different.
• m represents an integer of 1 to 10
• n represents 0 or an integer of 1 to 10.
• n is preferably 1 to 4, more preferably 2 to 3. Unlike monoimide, when n is 1 or more, high-temperature cleanability is even better, and when n is 4 or less, solubility in base oil is even better.
• alkenyl group examples include a polybutenyl group, a polyisobutenyl group, and an ethylene-propylene copolymer
• examples of the alkyl group include hydrogenated groups thereof.
• Suitable alkenyl groups include polybutenyl or polyisobutenyl groups.
• the polybutenyl group is preferably obtained as a mixture of 1-butene and isobutene or a polymer of high-purity isobutene.
• a representative example of a suitable alkyl group is a hydrogenated polybutenyl group or polyisobutenyl group.
• the alkenyl or alkyl succinimide is usually obtained by reacting an alkenyl succinic anhydride obtained by reacting a polyolefin with maleic anhydride, or an alkyl succinic anhydride obtained by hydrogenating it with a polyamine.
• the succinic monoimide and succinic bisimide described above can be produced by changing the reaction ratio of alkenyl succinic anhydride or alkyl succinic anhydride and polyamine.
• ⁇ -olefins having 2 to 8 carbon atoms can be mixed and used, but a mixture of isobutene and 1-butene is preferably used. be able to.
• polyamines include ethylenediamine, propylenediamine, butylenediamine, pentylenediamine and other single diamines, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, di (methylethylene) triamine, dibutylenetriamine, triethylene
• polyalkylene polyamines such as butylenetetramine and pentapentylenehexamine
• piperazine derivatives such as aminoethylpiperazine.
• the boride of an alkenyl or alkyl succinimide can be used for the boride of an alkenyl or alkyl succinimide.
• the above polyamine and boron oxide, boron halide, boric acid, boric anhydride, boric acid ester, ammonium boric acid It is obtained by reacting with an intermediate obtained by reacting a boron compound such as a salt and imidizing.
• the mass ratio (Nm / Nb) of nitrogen derived from the monoimide structure and nitrogen derived from the bisimide structure is 0.5 or less, preferably 0.4 or less.
• Engine durability can be improved as mass ratio (Nm / Nb) is 0.5 or less.
• one or more compounds selected from alkenyl succinimide, alkenyl succinimide borate, alkyl succinimide, and alkyl succinimide borate have a nitrogen content based on the total amount of the composition. It is contained 0.01% by mass or more and 0.10% by mass or less in terms of conversion. More preferably, they are 0.02 mass% or more and 0.09 mass% or less, More preferably, they are 0.03 mass% or more and 0.08 mass% or less. When this compound is less than 0.01% by mass in terms of nitrogen content, the high-temperature cleanability is deteriorated, and when it exceeds 0.10% by mass, the oxidation stability is deteriorated.
• the mass ratio (B / N ratio) of boron and nitrogen constituting the boride of alkenyl or alkyl succinimide in component (A) is 0.5 or more, preferably 0.6 or more, more preferably 0.8 or more.
• B / N ratio is 0.5 or more, the high-temperature cleanability is greatly improved.
• High temperature detergency is exhibited when the boron content derived from the boride of alkenyl or alkyl succinimide in the component (A) is a certain amount or more. If the boron content derived from the alkenyl or alkyl succinimide borate in the component (A) is 0.01% by mass or more and 0.06% by mass or less on the basis of the total amount of the composition, sufficient high-temperature cleanliness is obtained. can get. Preferably, they are 0.02 mass% or more and 0.05 mass% or less.
• Component (B) of the lubricating oil composition according to the present invention is one selected from alkali metal sulfonates, alkali metal phenates, alkali metal salicylates, alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates. It is a metallic detergent containing the above compounds. Of these, the component (B) is preferably at least one of an alkali metal sulfonate and an alkaline earth metal sulfonate.
• alkaline earth metal sulfonate examples include an alkaline earth metal salt of an alkyl aromatic sulfonic acid obtained by sulfonating an alkyl aromatic compound having a molecular weight of 300 to 1,500, preferably 400 to 700.
• magnesium salts, calcium salts and the like can be mentioned, among which calcium salts are preferably used.
• Alkaline earth metal phenates include alkylphenols, alkylphenol sulfides, alkaline earth metal salts of Mannich reaction products of alkylphenols, particularly magnesium salts, calcium salts, and the like. Of these, calcium salts are preferably used.
• alkaline earth metal salicylates examples include alkaline earth metal salts of alkyl salicylic acid, particularly magnesium salts and calcium salts, among which calcium salts are preferably used.
• the alkyl group constituting the alkaline earth metal detergent is preferably an alkyl group having 4 to 30 carbon atoms, more preferably an alkyl group having 6 to 18 carbon atoms, which may be linear or branched. These may also be primary alkyl groups, secondary alkyl groups or tertiary alkyl groups.
• Alkaline earth metal sulfonates, alkaline earth metal phenates and alkaline earth metal salicylates include the above-mentioned alkyl aromatic sulfonic acids, alkylphenols, alkylphenol sulfides, Mannich reactants of alkylphenols, alkyl salicylic acids, etc. from magnesium and calcium.
• Neutral alkaline earth metal sulfonates, neutral alkaline earth metal phenates and neutral alkaline earths obtained by direct reaction with one or more selected alkaline earth metal bases such as oxides or hydroxides of alkaline earth metals Metallic salicylates are included.
• Alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates include the above-mentioned alkyl aromatic sulfonic acids, alkylphenols, alkylphenol sulfides, Mannich reactants of alkylphenols, alkylsalicylic acids, etc., once as sodium salts. Further, neutral alkaline earth metal sulfonates, neutral alkaline earth metal phenates and neutral alkaline earth metal salicylates obtained by substituting alkali metal salts such as potassium salts with alkaline earth metal salts are included.
• alkaline earth metal sulfonates, alkaline earth metal phenates and alkaline earth metal salicylates include neutral alkaline earth metal sulfonates, neutral alkaline earth metal phenates and neutral alkaline earth metal salicylates, and excess alkali Basic alkaline earth metal sulfonates, basic alkaline earth metal phenates, and basic alkaline earth metal salicylates obtained by heating an earth metal salt or an alkaline earth metal base in the presence of water are included.
• alkaline earth metal sulfonates, alkaline earth metal phenates and alkaline earth metal salicylates include neutral alkaline earth metal sulfonates, neutral alkaline earth metal phenates and neutral alkaline earths in the presence of carbon dioxide. Also included are overbased alkaline earth metal sulfonates, overbased alkaline earth metal phenates and overbased alkaline earth metal salicylates obtained by reacting metal salicylates with alkaline earth metal carbonates or borates. It is.
• the alkaline earth metal sulfonate, alkaline earth metal phenate and alkaline earth metal salicylate can be used in combination of one or more selected from the above.
• the above-mentioned neutral salts, basic salts, overbased salts and mixtures thereof can be used, and in particular, one of overbased salicylates, overbased phenates, and overbased sulfonates. Mixing the above with neutral sulfonate is preferable in terms of cleanliness and wear resistance inside the engine.
• Metal-based detergents are usually commercially available in a state diluted with a light lubricating base oil or the like and are available. It is desirable to use a metal-based detergent having a metal content of 1.0 to 20% by mass, preferably 2.0 to 16% by mass.
• the base number of the component (B) is preferably 10 mgKOH / g or more and 600 mgKOH / g or less, more preferably 20 mgKOH / g or more and 500 mgKOH / g or less.
• the total base number referred to here is JIS K2501 “Petroleum products and lubricating oils-Neutralization number test method”. Means the total base number by potentiometric titration method (base number / perchloric acid method) measured according to the above.
• metal ratio is 3 or less, More preferably, 1. It is particularly preferable to use a metal detergent of 5 or less, particularly preferably 1.2 or less, as an essential component because it is excellent in oxidation stability, base number maintenance, high-temperature cleanability, and the like.
• the metal ratio here is represented by the valence of the metal element in the metal-based detergent ⁇ metal element content (mol%) / soap group content (mol%), and the metal elements include calcium, magnesium, and the like.
• the soap group means a sulfonic acid group, a phenol group, a salicylic acid group, and the like.
• the component (B) is preferably 0.3% by mass or less in order to reduce the sulfated ash content to 1.1% by mass or less.
• the compounding quantity of (B) component is contained 0.01 mass% or more and 0.3 mass% or less in conversion of the metal content in the composition whole quantity standard.
• sodium sulfonate is added to the component (B) based on the total amount of the lubricating oil composition. It is contained at 05 mass% or less.
• magnesium sulfonate is contained in an amount of 0.05% by mass or less of metal based on the total amount of the lubricating oil composition.
• the sulfur content is preferably 0.3% by mass or less, more preferably 0.2% by mass or less, and still more preferably 0.2% by mass or less based on the total amount of the composition. 1% by mass or less. When the sulfur content is 0.3% by mass or less, the performance deterioration of the exhaust gas purification catalyst can be effectively suppressed.
• composition further preferably contains zinc dialkyldithiophosphate (hereinafter also referred to as “ZnDTP”) as component (C).
• ZnDTP zinc dialkyldithiophosphate
• Examples of the component (C) include ZnDTP represented by the following formula (3).
• R 11 , R 12 , R 13 and R 14 are alkyl substituted with a primary or secondary alkyl group having 3 to 22 carbon atoms or an alkyl group having 3 to 18 carbon atoms. It is a substituent selected from an aryl group, and they may be the same as or different from each other.
• these ZnDTPs may be used singly or in combination of two or more, and in particular, those having a secondary alkyl group zinc dithiophosphate as a main component. In order to improve wear resistance, it is preferable.
• Specific examples of ZnDTP include zinc dipropyldithiophosphate, zinc dibutyldithiophosphate, zinc dipentyldithiophosphate, zinc dihexyldithiophosphate, zinc diisopentyldithiophosphate, zinc diethylhexyldithiophosphate, zinc dioctyldithiophosphate, dinonyldithiophosphate.
• Zinc zinc didecyl dithiophosphate, zinc didodecyl dithiophosphate, zinc dipropylphenyl dithiophosphate, zinc dipentylphenyl dithiophosphate, zinc dipropylmethylphenyl dithiophosphate, zinc dinonylphenyl dithiophosphate, zinc didodecylphenyl dithiophosphate, di Examples include zinc dodecylphenyl dithiophosphate.
• an antioxidant In the lubricating oil composition according to the present invention, an antioxidant, a viscosity index improver, a pour point depressant, a rust inhibitor, a metal deactivator, if necessary, as long as the effects of the present invention are not impaired. Antifoaming agents, antiwear agents, extreme pressure agents, and other additives may be added. ⁇ Antioxidant> As the antioxidant, a phenol-based or amine-based antioxidant can be used.
• phenolic antioxidant examples include octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate; 4,4′-methylenebis (2,6-di-t-butylphenol); 4,4′-bis (2,6-di-t-butylphenol); 4,4′-bis (2-methyl-6-t-butylphenol); 2,2′-methylenebis (4-ethyl-6-t) -Butylphenol); 2,2'-methylenebis (4-methyl-6-t-butylphenol); 4,4'-butylidenebis (3-methyl-6-t-butylphenol); 4,4'-isopropylidenebis (2 , 6-di-t-butylphenol); 2,2′-methylenebis (4-methyl-6-nonylphenol); 2,2′-isobutylidenebis (4,6-dimethylphenol); '-Methylenebis (4-methyl-6-cyclohexylphenol); 2,6-di-t-
• amine antioxidants include monoalkyl diphenylamines such as monooctyl diphenylamine and monononyl diphenylamine; 4,4′-dibutyldiphenylamine, 4,4′-dipentyldiphenylamine, 4,4′-dihexyldiphenylamine, 4 Dialkyldiphenylamines such as 4,4'-diheptyldiphenylamine, 4,4'-dioctyldiphenylamine, 4,4'-dinonyldiphenylamine; polyalkyldiphenylamines such as tetrabutyldiphenylamine, tetrahexyldiphenylamine, tetraoctyldiphenylamine, tetranonyldiphenylamine Systems; and those of the naphthylamine type, specifically ⁇ -naphthylamine, phenyl- ⁇ -naphthylamine
• a molybdenum amine antioxidant may be further added.
• a hexavalent molybdenum compound specifically, a product obtained by reacting molybdenum trioxide and / or molybdic acid with an amine compound, for example, the production described in JP-A-2003-252887
• the compound obtained by the method can be used. It does not restrict
• alkyl group having 1 to 30 carbon atoms such as methylamine, ethylamine, dimethylamine, diethylamine, methylethylamine, methylpropylamine and the like (these alkyl groups may be linear or branched).
• alkanol groups may be linear or branched; methylenediamine, ethylenediamine, propylene Amines and alkylenediamines having 1-30 carbon atoms such as butylenediamine; polyamines such as diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine; undecyldiethylamine, undecyldiethanolamine, dodecyldipropanolamine , Oleyldiethanolamine, oleylpropylenediamine, stearyltetraethylenepentamine and other monoamines, diamines, polyamines having a C8-20 alkyl group or alkenyl group, and heterocyclic compounds such as imidazoline; alkylene oxides of these compounds Additives; and mixtures thereof.
• Examples thereof include a sulfur-containing molybdenum complex of succinimide described in JP-B-3-22438 and JP-A-2004-2866.
• the amount of the antioxidant described above is preferably 0.3% by mass or more and 3% by mass or less based on the total amount of the composition. Moreover, 0.4 mass% or more and 3 mass% or less are more preferable, 0.4 mass% or more and 2 mass% or less are still more preferable, and 0.5 mass% or more and 2 mass% or less are especially preferable. If the antioxidant is 0.3% by mass or more based on the total amount of the composition, an increase in the acid value can be suppressed, and if it is 3% by mass or less, solubility in the lubricating base oil can be ensured.
• Viscosity index improver examples include polymethacrylate, dispersed polymethacrylate, olefin copolymer (for example, ethylene-propylene copolymer), dispersed olefin copolymer, styrene copolymer (for example, Styrene-diene copolymer, styrene-isoprene copolymer, etc.).
• the blending amount of these viscosity index improvers is 0.5% by mass or more and 15% by mass or less, preferably 1% by mass or more and 10% by mass or less, based on the total amount of the composition, from the viewpoint of the blending effect.
• pour point depressant examples include ethylene-vinyl acetate copolymer, condensate of chlorinated paraffin and naphthalene, condensate of chlorinated paraffin and phenol, polymethacrylate, polyalkylstyrene, and the like. Polymethacrylate having a molecular weight of 5,000 or more and 50,000 or less is preferably used. These are used in a proportion of 0.1% by mass or more and 5% by mass or less based on the total amount of the composition.
• rust preventive examples include petroleum sulfonate, alkylbenzene sulfonate, dinonyl naphthalene sulfonate, alkenyl succinate, polyhydric alcohol ester and the like.
• the blending amount of these rust preventives is 0.01% by mass or more and 1% by mass or less, preferably 0.05% by mass or more and 0.5% by mass or less based on the total amount of the composition from the viewpoint of the blending effect. .
• Metal deactivator examples include benzotriazole, tolyltriazole, thiadiazole, imidazole, and pyrimidine compounds. Of these, benzotriazole compounds are preferred.
• the compounding amount of these metal deactivators is preferably 0.01% by mass or more and 0.1% by mass or less, more preferably 0.03% by mass or more and 0% by mass based on the total amount of the composition from the viewpoint of blending effect. 0.05% by mass or less.
• Antifoaming agent examples include silicone oil, fluorosilicone oil, fluoroalkyl ether, and the like, and 0.005% by mass or more and 0.1% by mass based on the total amount of the composition from the viewpoint of balance between defoaming effect and economy. % Or less is preferable.
• Antiwear or extreme pressure agents include zinc dithiophosphate, zinc phosphate, zinc dithiocarbamate, molybdenum dithiocarbamate, molybdenum dithiophosphate, disulfides, sulfurized olefins, sulfurized fats and oils, sulfurized esters, thiocarbonates, thiocarbonates Sulfur-containing compounds such as carbamates and polysulfides; Phosphorous esters, phosphate esters, phosphonate esters, and phosphorus-containing compounds such as amine salts or metal salts thereof; thiophosphite esters, thiophosphoric acid Examples include sulfur and phosphorus-containing antiwear agents such as esters, thiophosphonic acid esters, and amine salts or metal salts thereof.
• the blending amount of the other antiwear agent is 600 mass ppm or less in terms of element as zinc based on the total amount of the lubricating oil composition.
• they are 0 mass ppm or more and 500 mass ppm or less, More preferably, they are 0 mass ppm or more and 400 mass ppm or less.
• the compounding quantity of another antiwear agent or extreme pressure agent is 500 mass ppm or less in terms of element as phosphorus on the basis of the total amount of the lubricating oil composition.
• they are 0 mass ppm or more and 400 mass ppm or less, More preferably, they are 0 mass ppm or more and 300 mass ppm or less.
• the blending amount of zinc is 600 mass ppm or less and the blending amount of phosphorus is 500 mass ppm or less, the basic compound in the lubricating oil composition, for example, engine oil is consumed, and the oil renewal period becomes extremely short. There is no.
• the phosphorus content based on the total amount of the composition is 100 mass ppm or more and 1200 mass ppm or less. If the amount of phosphorus is less than 100 ppm by mass, the wear resistance will be insufficient. On the other hand, if the phosphorus content exceeds 1200 ppm by mass, poisoning of exhaust gas to the purification catalyst cannot be sufficiently suppressed.
• the phosphorus content is preferably 200 ppm to 1100 ppm, more preferably 300 ppm to 1000 ppm, and particularly preferably 400 ppm to 900 ppm.
• the sulfated ash content based on the total amount of the composition is 1.1% by mass or less. If the sulfated ash content exceeds 1.1 mass%, the amount of ash deposited on the DPF filter increases in the diesel engine, the ash content of the DPF filter tends to clog, and the life of the DPF filter is shortened. From the viewpoint of further improving the oxidation stability, base number maintenance, and high-temperature cleanability of the lubricating oil composition, the sulfated ash content is more preferably 0.2% by mass or more, and particularly 0.3% by mass or more. Thus, a composition capable of maintaining the base number and the high temperature cleanliness for a longer period can be obtained.
• the sulfated ash refers to the ash that has been made constant by adding sulfuric acid to the carbonized residue produced by burning the sample and heating it. Usually, to know the approximate amount of the metal additive in the lubricating oil composition. Used for. Specifically, JIS K 2272 [5. It is measured by the method specified in the sulfate ash test method].
• the lubricating oil composition according to the present invention is not only excellent in high-temperature cleanliness, but also has good compatibility with fluororubber seals frequently used in the engine, so that it is a gasoline engine, diesel engine, gas engine, and hybrid vehicle engine. It can use suitably for internal combustion engines, such as. Examples of the internal combustion engine include a general internal combustion engine manufactured using a material such as an aluminum alloy material, a nickel chromium alloy material, a carbon steel material, or a chromium molybdenum steel material.
• the lubricating oil composition according to the present invention includes: In particular, it can be suitably used for lubricating an internal combustion engine in which at least the piston head is made of cast iron material.
• the method for producing a lubricating oil composition includes a base oil containing at least one selected from mineral oil and synthetic oil, having a viscosity index of 120 or more and a paraffin content by ring analysis of 70% or more.
• the component (B) is contained in an amount of 0.01% by mass to 0.3% by mass in terms of the metal content based on the total amount of the composition, and the boronated product of the alkenyl succinimide and the alkyl succinic acid in the component (A) Contains one or more compounds selected from imide boride, B / N ratio, which is a mass ratio of boron and nitrogen contained in component (A), is 0.5 or more, and contains phosphorus in the composition based on the total amount
• a method for producing a lubricating oil composition by blending such that the amount is 100 mass ppm or more and 1200 mass ppm or less and the sulfated ash content is 1.1 mass% or less based on the total amount of the composition. is there.
• the manufacturing method of the lubricating oil composition according to the present embodiment further includes an antioxidant, a viscosity index improver, a pour point depressant, a rust inhibitor, a metal Activators, antifoaming agents, antiwear agents, extreme pressure agents, and other additives are blended.
• (A) component and (B) component are added to the base oil, and further, an antioxidant, a viscosity index improver, a pour point depressant, a rust inhibitor, and a metal inert as necessary.
• the lubricating oil composition obtained by blending the agent, the antifoaming agent, the antiwear agent, the extreme pressure agent, and further other additives contains these various blended additives.
• the lubricating oil composition may be converted into another compound by reacting at least a part of these various additives.
• Sample oils of lubricating oil compositions were prepared using the following base oils, dispersants, metal-based detergents, and other additives, and the characteristics and properties of these sample oils were measured by the evaluation methods described below. The results are shown in Tables 1 and 2.
• Base oil hydrorefined base oil, 40 ° C. kinematic viscosity 21 mm 2 / s, 100 ° C.
• Viscosity index improver A polymethacrylate, weight average molecular weight 420,000, resin amount 39% by mass
• Phenol antioxidant octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate
• Amine antioxidant dialkyldiphenylamine, nitrogen content 4.62% by mass
• Zinc dithiophosphate Zn content 9.0% by mass, phosphorus content 8.2% by mass, sulfur content 17.1% by mass, alkyl group; mixture of secondary butyl group and secondary hexyl group
• Agent A Neutral calcium sulfonate, base number (perchloric acid method) 20 mgKOH / g, calcium content 1.8% by mass, sulfur content 1.8% by mass
• Metal detergent B neutral calcium sulfon
• High temperature cleanliness evaluation method (hot tube test)> High temperature cleanability was evaluated by a hot tube test according to JPI-5S-55-99. Specifically, the sample oil was continuously supplied into a glass tube having an inner diameter of 2 mm at a flow rate of 0.31 mL / h and air at a flow rate of 10 mL / min for 16 hours. The temperature of the glass tube was kept at 280 ° C. Thereafter, the mass of the deposit adhered to the glass tube was measured. The evaluation is 10 steps, and the higher the score, the smaller the mass of deposit deposits and the better the high temperature cleanliness.
• ⁇ Initial film formation test> Using a Kamata four-ball tester, a rotating ball and a fixed ball are electrically insulated completely by a lubricating oil film in a test time of 180 seconds under conditions of an oil temperature of 80 ° C., a rotation speed of 500 rpm, and a load of 0.0480 MPa. Time was evaluated as the film formation time. The shorter the film formation time, the better the initial film formation ability and the better the wear resistance.
• ⁇ Load bearing performance test> Using an Iwata four-ball tester, under an oil temperature of 80 ° C.
• the load was increased by 0.196 MPa every 3 minutes from the initial load of 0.048 MPa, and the load was applied to 0.288 MPa to rotate.
• the load at which the sphere and the fixed sphere are electrically conducted completely was evaluated as a complete contact load. The larger the value of the complete contact load, the better the load bearing performance.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Lubricants (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=51491477

Family Applications (1)

Country Status (5)

Cited By (4)

Families Citing this family (8)

Citations (8)

Family Cites Families (12)

• 2014
  • 2014-03-07 CN CN201811219841.6A patent/CN109439401A/zh active Pending
  • 2014-03-07 WO PCT/JP2014/056068 patent/WO2014136970A1/ja active Application Filing
  • 2014-03-07 US US14/773,609 patent/US20160024417A1/en not_active Abandoned
  • 2014-03-07 CN CN201480012146.6A patent/CN105189720A/zh active Pending
  • 2014-03-07 JP JP2015504460A patent/JP6507455B2/ja active Active
  • 2014-03-07 EP EP14760600.8A patent/EP2966155A4/en not_active Withdrawn
• 2018
  • 2018-10-01 JP JP2018186912A patent/JP6676868B2/ja active Active

Patent Citations (8)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events