WO2014057683A1 - クロスヘッド型ディーゼル機関用シリンダー潤滑油組成物 - Google Patents
クロスヘッド型ディーゼル機関用シリンダー潤滑油組成物 Download PDFInfo
- Publication number
- WO2014057683A1 WO2014057683A1 PCT/JP2013/006060 JP2013006060W WO2014057683A1 WO 2014057683 A1 WO2014057683 A1 WO 2014057683A1 JP 2013006060 W JP2013006060 W JP 2013006060W WO 2014057683 A1 WO2014057683 A1 WO 2014057683A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- mass
- less
- base oil
- component
- Prior art date
Links
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
- 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
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/104—Aromatic fractions
- C10M2203/1045—Aromatic 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
- C10M2205/0265—Butene 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms 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
- C10M2207/028—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
- 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
- C10M2215/28—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
- C10M2219/046—Overbasedsulfonic acid salts
-
- 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
-
- 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
- C10N2030/02—Pour-point; 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
- C10N2030/04—Detergent property or dispersant property
-
- 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
- C10N2030/64—Environmental friendly 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/252—Diesel engines
Definitions
- the present invention relates to a cylinder lubricant composition for a crosshead type diesel engine.
- ⁇ Crosshead diesel engines use cylinder oil that lubricates between the cylinder and piston, and system oil that controls lubrication and cooling of other parts.
- the cylinder oil is required to have the proper viscosity necessary for lubrication between the cylinder and the piston (piston ring) and the function of maintaining the cleanliness necessary for proper movement of the piston and piston ring. It is done.
- the high-sulfur fuel is usually used in the crosshead type diesel engine because of its economical efficiency, it has a problem of cylinder corrosion due to acidic components such as sulfuric acid generated by combustion.
- the cylinder oil also needs a function of neutralizing acidic components such as sulfuric acid to be generated and preventing corrosion.
- the base oils used for conventional lubricating oils are mainly the atmospheric distillation residue obtained by distilling and separating gasoline and light oil from crude oil, and further distilling under reduced pressure to take out the necessary viscosity fraction. It is manufactured by purifying. These base oils are classified as Group I in the API base oil classification.
- a base oil having an extremely high viscosity index is produced by hydrocracking petroleum wax produced as a by-product when producing a wax or base oil produced by the Fischer-Tropsch process.
- These base oils produced by hydrocracking are classified into Group II or III according to API base oil classification.
- the heavy fuel when heavy fuel is used, the heavy fuel contains polycyclic aromatics such as asphaltenes, and in the case of an internal combustion engine, it is mixed into the lubricating oil as a part of unburned matter.
- This unburned product dissolves relatively easily in Group I base oils, but has poor solubility in Group II base oils and Group III base oils. Since it is easy to deteriorate, a deposit is formed more easily.
- the base oil is produced by solvent extraction from the residual oil after vacuum distillation of the atmospheric distillation residual oil.
- This is a base oil generally called bright stock and has a kinematic viscosity of at least 15 mm 2 / s at 100 ° C., which is indispensable for producing a high viscosity oil, although it varies depending on the process.
- the production equipment for Group I base oil is relatively small, and the production amount of this bright stock is also decreasing.
- the present invention is a crosshead type diesel engine that generates heavy deposits even when a Group II or Group III base oil is used as a cylinder lubricant for a crosshead type diesel engine that uses heavy fuel.
- the purpose is to provide a cylinder lubricant.
- an object of the present invention is to provide a cylinder lubricant for a crosshead type diesel engine that does not use such bright stock.
- the present inventors added an extract produced as a by-product during solvent refining to Group II and / or Group III base oils, and further imparted the same level of viscosity as bright stock.
- the present inventors have found that the above problems can be improved by using a specific synthetic oil as an alternative to achieve the present invention.
- the present invention (A) Mineral oil having a saturated hydrocarbon content of 90% by mass or more, a sulfur content of 0.03% by mass or less, a viscosity index of 80 or more, and a kinematic viscosity at 100 ° C. of 10 to 20 mm 2 / s.
- Base lubricant base oil (B) An extract containing 15% or more of an aromatic hydrocarbon compound (% C A ) by a composition analysis method defined in ASTM D2140, which is by-produced during solvent refining in the process of producing a mineral oil base oil 3% by mass or more based on the total amount of base oil, (C) a base oil comprising a polymer of an olefin having 4 or more carbon atoms or a hydride thereof, and a high molecular weight compound synthetic oil having a kinematic viscosity at 100 ° C. of 20 to 400 mm 2 / s, (D) a metallic detergent, (E) A cylinder lubricating oil composition for a crosshead type diesel engine, which is blended with an ashless dispersant.
- the component (B) is preferably an extract having a PCA content of less than 3% by mass.
- the component (B) has an MI value of less than 1.0 and a benzo [a] pyrene content of 1 mg / kg or less. It is also preferable that the specific aromatic compound (PAH) is an extract having a content of 10 mg / kg or less.
- the component (C) is preferably a polybutene synthetic oil and / or a poly ⁇ -olefin synthetic oil.
- the cylinder lubricating oil composition for a crosshead type diesel engine of the present invention has a kinematic viscosity at 100 ° C. of 12.5 to 21.9 mm 2 / s and a base number of 20 to 100 mgKOH / g (perchloric acid method). ) Is preferable.
- a cylinder lubricant for a crosshead type diesel engine that uses a heavy fuel even if a group II or group III base oil is used, a cylinder lubricant for a crosshead type diesel engine that produces little deposits is obtained. Oil can be provided.
- the present invention is described in detail below.
- the base oil in the cylinder lubricating oil composition for a crosshead type diesel engine of the present invention (hereinafter also simply referred to as a lubricating oil composition)
- A Mineral oil having a saturated hydrocarbon content of 90% by mass or more, a sulfur content of 0.03% by mass or less, a viscosity index of 80 or more, and a kinematic viscosity at 100 ° C. of 10 to 20 mm 2 / s.
- Base lubricant base oil (B) An extract containing 15% or more of an aromatic hydrocarbon compound (% C A ) by a composition analysis method defined in ASTM D2140, which is by-produced during solvent refining in the process of producing a mineral oil base oil 3% by mass or more based on the total amount of base oil, (C) a polymer of an olefin having 4 or more carbon atoms or a hydride thereof, and a high molecular weight compound synthetic oil having a kinematic viscosity at 100 ° C. of 20 to 400 mm 2 / s.
- the component (A) has a saturated hydrocarbon content of 90% by mass or more, a sulfur content of 0.03% by mass or less, a viscosity index of 80 or more, and a kinematic viscosity at 100 ° C. of 10 to 20 mm 2 / s mineral oil base oil and classified into group II and group III based on the base oil classification by API (American Petroleum Institute).
- the saturated hydrocarbon content means a value measured by ASTM D-2007.
- the method for producing the mineral oil base oil is not particularly limited, but in general, an atmospheric residue obtained by atmospheric distillation of crude oil is desulfurized, hydrocracked, and a set viscosity is obtained.
- the grade is fractionally distilled or its residual oil is subjected to solvent dewaxing or catalytic dewaxing, and if necessary, further solvent extraction and hydrogenated base oil.
- the above-mentioned component (A) is also subjected to distillation under reduced pressure from atmospheric distillation residue, fractionated to the required viscosity grade, and then subjected to processes such as solvent refining and hydrorefining to dewax the solvent.
- GTL WAX gas
- GTL-based wax isomerized lubricating base oils and the like produced by isomerizing (Turi Liquid Wax).
- the basic method of producing the wax isomerized lubricating base oil is the same as that of the hydrocracking base oil.
- the total aromatic content of the mineral oil-based lubricating base oil of component (A) is not particularly limited, but is 3% by mass or less in one embodiment, 1% by mass or less in another embodiment, and other In this embodiment, it is 0.5% by mass or less.
- the said total aromatic content means the aromatic fraction content measured based on ASTMD2549.
- the sulfur content of the mineral oil-based lubricating base oil that is the component (A) is 0.03% by mass or less, in one embodiment, 0.01% by mass or less, and in another embodiment, The mineral oil base oil is substantially free of sulfur.
- the smaller the sulfur content the higher the degree of purification, and the problem of sludge solubility is likely to occur.
- the kinematic viscosity at 100 ° C. of the mineral oil base oil which is the component (A) is 10 to 20 mm 2 / s, preferably 10 to 16 mm 2 / s, particularly preferably 10 to 15 mm 2 / s. is there.
- the kinematic viscosity at 100 ° C. of the mineral oil-based lubricating base oil exceeds 20 mm 2 / s, the low-temperature viscosity characteristics deteriorate, whereas when the kinematic viscosity is less than 10 mm 2 / s, the oil film at the lubrication point Insufficient formation results in poor lubricity and increases the evaporation loss of the lubricating base oil.
- the kinematic viscosity at 100 ° C. refers to the kinematic viscosity at 100 ° C. defined in ASTM D-445.
- the viscosity index of the mineral oil base oil that is the component (A) is 80 or more, in one embodiment, 95 or more, and in another embodiment, 105 or more.
- the viscosity index means a viscosity index measured in accordance with JIS K2283-2000.
- the upper limit of the viscosity index of the mineral oil base oil is not particularly limited. A degree can also be used. However, the viscosity index of the mineral oil base oil is preferably 160 or less from the viewpoint of low temperature fluidity.
- the blending amount of the mineral oil-based lubricating base oil of the component (A) is preferably 65% by mass or more, more preferably 70% by mass or more, and even more preferably 75% by mass or more based on the total amount of the base oil. Moreover, it is preferably 85% by mass or less, more preferably 80% by mass or less.
- the base oil in the cylinder lubricant composition for a crosshead type diesel engine of the present invention is (B) 3 mass on the basis of the total amount of base oil based on the extract produced as a by-product during solvent refining in the process of producing a mineral oil base oil. % Or more.
- the extract produced as a by-product during the solvent purification contains 70 to 99% of aromatic compounds according to column chromatography, and is an aromatic hydrocarbon compound (% C A ) according to the composition analysis method defined in ASTM D2140. Is contained in an amount of 5 to 25% by weight of PCA (polycyclic aromatic compound) extracted with DMSO (dimethyl sulfoxide) according to the IP346 method defined by the British Petroleum Institute.
- PCA polycyclic aromatic compound
- DMSO dimethyl sulfoxide
- the method for producing the extract produced as a by-product during the solvent refining is not particularly limited, but as an example, after removing the lubricating oil fraction obtained by vacuum distillation of the crude oil and the vacuum distillation residue, if necessary, Oil obtained by performing dewaxing treatment or hydrorefining treatment and subjecting the oil to solvent extraction with a solvent having affinity for aromatic hydrocarbons is used.
- the above solvent extraction treatment refers to an operation of using a solvent to separate a raffinate having a low aromatic content and an extract having a high aromatic content.
- a solvent furfural, phenol, cresol, sulfolane, N-methylpyrrolidone. , Dimethyl sulfoxide, formylmorpholine, glycol solvents and the like are used.
- the extract as the component (B) has a PCA content of less than 3% by mass, that is, PCA (polycyclic aromatic compound) extracted with DMSO (dimethyl sulfoxide) according to the IP346 method defined by the British Petroleum Institute. ) Content is preferably less than 3% by mass.
- the content of PCA in the extract varies depending on the separability in the solvent extraction process, the solvent used, the ratio of raw material oil / solvent, reaction temperature, and the like. Therefore, it is possible to control the PCA content to 3% by mass or less by appropriately changing these conditions. In order to control the PCA content of the extract to 3% by mass or less, hydrocracking treatment is also preferably used.
- the extract as the component (B) having a PCA content of less than 3% by mass is not limited in its production method, but the following production method can be exemplified.
- Japanese National Publication No. 6-505524 discloses a process for producing a process oil in which a residue obtained by distillation under reduced pressure is removed and dewaxed to reduce the PCA content to less than 3% by mass. ing.
- Japanese Patent Publication No. 7-501346 discloses a non-carcinogenic bright stock extract, a debris oil having a low PCA content, and a process for producing the same, and the publication discloses debris removal from a residue in a vacuum distillation column. Oils obtained by reducing the aromatic compounds by the extraction treatment of the oil obtained by the above or deasphalting oil or the oil obtained by the dewaxing treatment thereof are disclosed.
- Japanese Patent Application Laid-Open No. 11-80751 discloses a polycyclic ring according to the IP346 test method from a petroleum hydrocarbon mixture by performing extraction under specific conditions using a countercurrent contact type extraction tower in solvent extraction. An extraction residual oil having an aromatic compound content of less than 1.6% by mass is obtained, and a petroleum aromatic hydrocarbon oil having a polycyclic aromatic compound content of less than 3% by mass according to the IP346 test method is further obtained by solvent extraction in the second stage. A production method obtained as an extracted oil is disclosed.
- Japanese Patent Application Laid-Open No. 2000-80208 discloses a raw material preparation step for preparing a raw material oil selected from the group consisting of a lubricating oil fraction obtained by distillation of crude oil under reduced pressure and a debris oil obtained by removal of a crude oil vacuum distillation residue.
- a solvent extraction step of solvent extraction of the feedstock with a solvent having a selective affinity for aromatic hydrocarbons, and the content of the polycyclic aromatic compound in the extract determined by the IP346 method in the solvent extraction step Discloses a process for producing a rubber process oil, characterized in that the extraction conditions are determined so that the aniline point is 80 ° C. or less.
- the extract as the component (B) preferably has a low carcinogenicity by PCA as described above, or preferably has a mutagenicity index MI of less than 1.0.
- the PCA is less than 3% by mass and the mutagenicity index MI is less than 1.0. More preferably, the PCA is less than 3% by mass and the mutagenicity index MI is less than 0.4.
- mutagenicity index MI is an index based on the “Standard Test Method for Determining Carcinogenic Potential of Virgin Base Oils in Metalworking stipulated by ASTM-E-1687-10.”
- the method for producing the extract as the component (B) having a mutagenicity index MI of less than 1.0 is not particularly limited, but as an example, a process oil is disclosed in Japanese Patent No. 3624646.
- the extract as the component (B) is carcinogenic when the content of benzo [a] pyrene (BaP) is 1 mg / kg or less and the specific aromatic compound (PAH) is 10 mg / kg or less. This is preferable.
- the specific aromatic compound (PAH) means an aromatic compound (PAH) of the following 1) to 8).
- the production method is not limited.
- JP-a-2010-229314 discloses, a% C a is 25 to 45 according to ASTMD3238, benzo [a] content of pyrene (BaP) is not more than 1 mg / kg, certain aromatic compounds (PAH) is A method for producing an extract of 10 mg / kg or less is disclosed.
- the extract as the component (B) preferably has a bay proton concentration (% H Bay ) of less than 0.35%.
- bai proton is a 1 H-NMR measurement of the proportion of hydrogen atoms in the part called “Bay region” surrounded by a condensed benzene ring, and is used to judge the carcinogenicity associated with the structure of aromatic compounds. is there.
- the measurement method is ISO 21461 “Rubber-Determination of the aromatity of oil in rubberized compound”. It is said that the higher the bay proton concentration, the higher the carcinogenicity, and it is preferably less than 0.35%.
- the extract as the component (B) has a benzo (a) pyrene (BaP) content of 1 mg / kg or less, a specific aromatic compound (PAH) of 10 mg / kg or less, and a bay proton concentration (% H Bay ) Is less than 0.35%, and the mutagenicity index MI is particularly preferably less than 1.0.
- the extract as the component (B) preferably has a kinematic viscosity at 100 ° C. of 5 to 100 mm 2 / s.
- a kinematic viscosity at 100 ° C. exceeds 100 mm 2 / s, workability deteriorates.
- the kinematic viscosity at 100 ° C. is less than 5 mm 2 / s, it is extremely difficult to ensure sufficient aromaticity, and the effects of the present invention may not be exhibited.
- the kinematic viscosity at 100 ° C. is preferably 50 mm 2 / s or less, and more preferably 20 mm 2 / s or more.
- the high temperature cleanability is high.
- the kinematic viscosity at 100 ° C. is 50 mm 2 / s or less
- the high temperature cleanability is high.
- the kinematic viscosity at 100 ° C. is 20 mm 2 / s or more
- the high temperature cleanability is high.
- the extract as said (B) component may not have sufficient solubility, when% C A (ASTM D2140) is less than 15%.
- % C A (ASTM D2140) of the extract exceeds 50%, it is extremely difficult to make the DMSO extract less than 3%, which is not preferable because the economical efficiency of the purification process deteriorates.
- the extract as the component (B) preferably has an aniline point of 90 ° C. or lower.
- the aniline point of the extract exceeds 90 ° C., the solubility is lowered, which is not preferable.
- the solubility may be lowered.
- the aromatic content of the extract by column chromatography exceeds 95%, it is extremely difficult to make the DMSO extract less than 3%, which is not preferable because the economical efficiency of the purification process deteriorates.
- the blending amount of the extract of the component (B) described above is 3% by mass or more, preferably 5% by mass or more, more preferably 10% by mass or more based on the total amount of the base oil. Further, the blending amount of the extract is preferably 90% by mass or less, more preferably 80% by mass or less, based on the total amount of the base oil.
- the piston cleanliness deteriorates.
- it exceeds 90% by mass the viscosity index decreases and the increase in viscosity at low temperatures increases. Therefore, it is not preferable.
- the base oil in the cylinder lubricating oil composition for a crosshead type diesel engine of the present invention is a polymer of an olefin having 4 or more carbon atoms as a component (C) or a hydride thereof, and has a kinematic viscosity at 100 ° C. of 20 Contains high molecular weight compound-based synthetic oil of ⁇ 400 mm 2 / s. As described above, one of the purposes of the component (C) is to increase the viscosity of the base oil. Therefore, when the kinematic viscosity at 100 ° C.
- the viscosity of the base oil is not sufficiently increased and the lubricity of the engine is not sufficient, which is not preferable.
- the kinematic viscosity at 100 ° C. of the component (C) exceeds 400 mm 2 / s, the piston cleanliness deteriorates and the carbon deposition amount of the exhaust system may increase, which is not preferable.
- the component (C) is not particularly limited as long as it is a high molecular weight compound synthetic oil having a kinematic viscosity at 100 ° C. of 20 to 400 mm 2 / s, which is a polymer of olefins having 4 or more carbon atoms or a hydride thereof.
- polybutene-based synthetic oil, poly- ⁇ -olefin-based synthetic oil (PAO) or a hydride thereof is preferable, and polybutene is particularly preferable.
- polybutene is a polymer of butene which is an olefin having 4 carbon atoms.
- the butane-butene fraction includes isobutane, n-butane, isobutylene, 1-butene, trans-2-butene, cis-2-butene and the like.
- the kinematic viscosity at 100 ° C. of the polybutene synthetic oil or hydride thereof is preferably 60 mm 2 / s or more, more preferably 100 mm 2 / s or more, preferably 350 mm 2 / s or less, 250 mm 2 / s. S or less is more preferable.
- the kinematic viscosity at 100 ° C. of the polybutene synthetic oil or its hydride is 60 mm 2 / s or more, the viscosity of the base oil is sufficiently increased, the engine lubricity is sufficient, and the viscosity of 250 mm 2 / s or less is sufficient. In this case, the piston cleanliness is improved, and an increase in the amount of carbon deposited in the exhaust system can be suppressed.
- the polybutene synthetic oil or hydride thereof preferably has a number average molecular weight of 500 or more and less than 1500, more preferably a number average molecular weight of 1300 or less, still more preferably a number average molecular weight of 1000 or less, and a number average A molecular weight of 700-1000 is particularly preferred.
- the number average molecular weight of the polybutene synthetic oil or its hydride is 500 or more, the viscosity of the base oil is sufficiently increased, the engine has sufficient lubricity, and when the number average molecular weight is less than 1500, the piston cleanliness is low. In addition, an increase in the amount of carbon deposition in the exhaust system can be suppressed.
- the poly ⁇ -olefin synthetic oil (PAO) or hydride thereof as the component (C) is an ⁇ -olefin oligomer or co-oligomer having 8 to 14 carbon atoms and a hydride thereof.
- examples of the ⁇ -olefin having 8 to 14 carbon atoms include 1-octene, 1-decene, and 1-dodecene.
- the production method of the poly ⁇ -olefin synthetic oil is not particularly limited.
- a polymerization catalyst such as aluminum trichloride or boron trifluoride and water, alcohol (ethanol, propanol, butanol, etc.), ⁇ - The method of superposing
- the kinematic viscosity at 100 ° C. of the poly ⁇ -olefin synthetic oil or hydride thereof is 20 to 400 mm 2 / s, preferably 30 mm 2 / s or more, more preferably 35 mm 2 / s or more, 200 mm 2 / s or less is preferable, and 160 mm 2 / s or less is more preferable.
- the kinematic viscosity at 100 ° C. of the poly ⁇ -olefin synthetic oil or hydride thereof is less than 20 mm 2 / s, the viscosity does not increase sufficiently and the lubricity of the engine becomes insufficient, which is not preferable.
- the piston cleanliness is good and the increase in the amount of carbon deposition in the exhaust system can be suppressed.
- the blending amount of the high molecular weight compound-based synthetic oil having a kinematic viscosity at 100 ° C. of 20 to 400 mm 2 / s, which is a polymer of olefins having 4 or more carbon atoms or a hydride thereof as component (C), is the total amount of base oil A range of 5 to 60% by mass is preferable, more preferably 50% by mass or less, still more preferably 40% by mass or less, and most preferably 30% by mass or less.
- the blending amount of the component (C) is less than 5% by mass, it is difficult to ensure the minimum viscosity as a cylinder oil.
- it exceeds 60% by mass the viscosity is too high and, on the contrary, may cause poor lubrication. There is.
- the base oil of the lubricating oil composition of the present invention may be mixed with a synthetic oil base oil other than the component (C).
- a synthetic oil base oil other than the component (C) include isobutene oligomers having a kinematic viscosity at 100 ° C. of 3 mm 2 / s or more and less than 25 mm 2 / s, or homopolymers of 1-octene, 1-decene, and 1-dodecene.
- Poly ⁇ -olefins which are ⁇ -olefin oligomers having 8 to 14 carbon atoms typified by oligomers and / or co-oligomers or the like; ditridecyl glutarate, di-2-ethylhexyl adipate, diisodecyl adipate, ditridecyl Diesters such as adipate and di-2-ethylhexyl sebacate; polyol esters such as trimethylolpropane caprylate, trimethylolpropane pelargonate, pentaerythritol-2-ethylhexanoate and pentaerythritol pelargonate; dicarbox such as dibutyl maleate Examples include copolymers of acids and ⁇ -olefins having 2 to 30 carbon atoms; aromatic synthetic oils such as alkylnaphthalenes, alkylbenzenes, and aromatic esters, or mixture
- a preferred synthetic base oil is an ⁇ -olefin oligomer having 8 to 14 carbon atoms called poly ⁇ -olefin, and its kinematic viscosity at 100 ° C. is 4 mm 2 / s or more and less than 20 mm 2 / s. It is.
- a mineral oil-based lubricating base oil that is component (A), an extract that is component (B), and a base oil that includes a high molecular weight compound-based synthetic oil that is component (C).
- the kinematic viscosity at 100 ° C. is preferably in the range of 10 to 20 mm 2 / s, more preferably 12 mm 2 / s or more, even more preferably 15 mm 2 / s or more, more preferably 19 mm 2 / s or less, more More preferably, it is 18 mm 2 / s or less. If the base oil has a kinematic viscosity at 100 ° C.
- the content of components (A) and component (B) by% C A on the n-d-m ring analysis of the mixed base oil component (ASTMD3238) (A) component and (B) in the total base oil components is preferably 1% or more.
- the equivalent value is more preferably 2% or more, preferably 20% or less, more preferably 17% or less. If the above value is less than 1%, the solubility and cleanliness are inferior. On the other hand, if it exceeds 20%, the viscosity index is deteriorated.
- the aromatic content by alumina silica chromatography analysis is preferably 4% by mass or more, more preferably 7% by mass or more, Preferably it is 60 mass% or less, More preferably, it is 40 mass% or less. If the aromatic content of the base oil is less than 4% by mass, the solubility and cleanability are poor. On the other hand, if it exceeds 60% by mass, the viscosity index is deteriorated.
- the base oil containing the component (A), the component (B) and the component (C) is an ndm ring analysis (ASTMD 3238) of the base oil component obtained by mixing the components (A) and (B). and less than 20% 1% value the content ratio raised to the power of the percent C a (a) component and (B) in the total base oil component according to, aromatic content by alumina-silica chromatographic analysis 4 mass% or more 60 It is preferable that it is below mass%.
- the base oil containing the component (A), the component (B) and the component (C) is obtained by analyzing the ndm ring of the base oil component obtained by mixing the component (A) and the component (B) (ASTMD 3238).
- the value obtained by multiplication of the content of by% C a component (a) and (B) in the total base oil component is an aromatic component by the alumina silica chromatography analysis of 7 mass% or more and 40 It is particularly preferable that the content is not more than mass%.
- the amount of evaporation loss of the base oil of the lubricating oil composition of the present invention is preferably 20% by mass or less, more preferably 16% by mass or less, and more preferably 10% by mass or less in terms of NOACK evaporation. Is particularly preferred.
- NOACK evaporation amount of the base oil exceeds 20% by mass, the evaporation loss of the lubricating oil composition is large, which causes an increase in viscosity and the like, which is not preferable.
- the NOACK evaporation amount is a value obtained by measuring the evaporation amount of the base oil measured in accordance with ASTM D5800.
- the cylinder lubricating oil composition for a crosshead type diesel engine of the present invention contains (D) a metal-based detergent (hereinafter sometimes referred to as (D) component) as an essential component.
- D a metal-based detergent
- any compound usually used for lubricating oils can be used.
- these metal detergents can be used alone or in combination of two or more.
- Examples of the sulfonate detergent include alkali metal salts and alkaline earth metals of alkyl aromatic sulfonic acids obtained by sulfonating alkyl aromatic compounds having a weight average molecular weight of 400 to 1500, preferably 700 to 1300. A salt or a (over) basic salt thereof can be used.
- Examples of the alkali metal or alkaline earth metal include sodium, potassium, magnesium, barium, and calcium. Magnesium or calcium is preferable, and calcium is particularly preferable.
- Examples of the alkyl aromatic sulfonic acid include so-called petroleum sulfonic acid and synthetic sulfonic acid.
- Examples of the petroleum sulfonic acid herein include those obtained by sulfonating an alkyl aromatic compound of a lubricating oil fraction of mineral oil, and so-called mahoganic acid that is by-produced during white oil production.
- the synthetic sulfonic acid for example, an alkylbenzene having a linear or branched alkyl group, which is produced as a by-product from an alkylbenzene production plant that is a raw material of a detergent or obtained by alkylating a polyolefin with benzene, is used.
- a sulfonated one or a sulfonated alkylnaphthalene such as dinonylnaphthalene is used.
- the sulfonating agent for sulfonating these alkyl aromatic compounds is not particularly limited, but usually fuming sulfuric acid or sulfuric anhydride is used.
- the alkali metal salt, alkaline-earth metal salt, or its (over) basic salt of alkylphenol sulfide which has a structure shown by following formula (1) can be used.
- the alkali metal or alkaline earth metal include sodium, potassium, magnesium, barium, and calcium. Magnesium or calcium is preferable, and calcium is particularly preferable.
- R 1 represents a straight or branched, saturated or unsaturated alkyl group or alkenyl group having 6 to 21 carbon atoms
- m is a degree of polymerization
- S is sulfur.
- x represents an integer of 1 to 3.
- the carbon number of the alkyl group and alkenyl group in the formula (1) is preferably 9-18, more preferably 9-15. If the carbon number is less than 6, the solubility in the base oil may be inferior. On the other hand, if the carbon number exceeds 21, the production is difficult and the heat resistance may be inferior.
- phenate metal detergents those containing an alkylphenol sulfide metal salt having a polymerization degree m of 4 or more, particularly m of 4 to 5 shown in the formula (1) are preferable because of excellent heat resistance.
- the salicylate detergent examples include alkali metal having one hydrocarbon group having 1 to 19 carbon atoms, alkaline earth metal salicylate or a (over) basic salt thereof, and hydrocarbon group having 20 to 40 carbon atoms.
- These hydrocarbon groups may be the same or different.
- the alkali metal or alkaline earth metal include sodium, potassium, magnesium, barium, and calcium. Magnesium and / or calcium are preferable, and calcium is particularly preferably used.
- the base value of the component (D) is preferably in the range of 50 to 500 mgKOH / g, more preferably in the range of 100 to 450 mgKOH / g, and still more preferably in the range of 120 to 400 mgKOH / g.
- the base number is less than 50 mgKOH / g, the corrosion wear may increase.
- it exceeds 500 mgKOH / g there may be a problem in solubility.
- the metal ratio of the component (D) is not particularly limited, but the lower limit is preferably 1 or more, more preferably 2 or more, particularly preferably 2.5 or more, and the upper limit is preferably 20 or less, more preferably 19 or less, particularly It is desirable to use 18 or less.
- the metal ratio here is represented by the valence of the metal element in the component (D) ⁇ metal element content (mol%) / soap group content (mol%).
- the metal element means 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 (D) can be used alone, but it is preferable to use two or more kinds in combination.
- the component (D) can be used alone, but it is preferable to use two or more kinds in combination.
- overbased Ca phenate / overbased Ca sulfonate (2) overbased Ca phenate / overbased Ca salicylate, (3) overbased Ca phenate / overbased Ca sulfonate / A combination of overbased Ca salicylate is preferred.
- a preferred ratio of (1) overbased Ca phenate / overbased Ca sulfonate or (2) overbased Ca phenate / overbased Ca salicylate is 0.1 or more in terms of the weight ratio of the additive. 2 or more is more preferable, and 0.3 or more is most preferable. This is because the heat resistance is inferior when the ratio is less than 0.1.
- the ratio is preferably 9 or less, more preferably 7 or less, and most preferably 5 or less. This is because when the ratio exceeds 9, the height in the TGA firing test is not sufficient, and the deposit on the piston top land is not sufficiently reduced.
- overbased Ca phenate / overbased Ca sulfonate / overbased Ca salicylate the sum of the overbased Ca sulfonate and the overbased Ca salicylate with respect to the overbased Ca phenate is the above ratio. Is preferred.
- 0.1 or more are preferable, 0.2 or more are further more preferable, and 0.3 or more are the most preferable. This is because if the weight ratio is less than 0.1, the deposit may increase conversely in a state far exceeding 300 ° C.
- the weight ratio is preferably 9 or less, more preferably 7 or less, and most preferably 5 or less. When the weight ratio exceeds 9, the cleanliness deteriorates.
- the content of the component (D) is preferably 3 to 30% by mass, more preferably 6 to 25% by mass, and particularly preferably 8 to 20% by mass based on the total amount of the composition. It is.
- the content ratio of the component (D) is less than 3% by mass, the required cleanliness and acid neutralization may not be obtained.
- the content exceeds 30% by mass the excess metal component is a piston. There is a risk of accumulation.
- the metal content based on the component (D) is preferably 0.35 to 3.6% by mass, more preferably 1.0 to 2.% by mass based on the total amount of the composition. It is 9% by mass, particularly preferably 1.4 to 2.7% by mass.
- the content of the metal component based on the component (D) is less than 0.7% by mass, the required cleanliness and acid neutralization may not be obtained, whereas when it exceeds 3.6% by mass In this case, excessive ash may accumulate on the piston top land, causing bore polishing or scuffing of the liner.
- the cylinder lubricating oil composition for a crosshead type diesel engine of the present invention contains (E) an ashless dispersant (hereinafter sometimes referred to as (E) component) as an essential component.
- any ashless dispersant used in lubricating oils can be used.
- a linear or branched alkyl group or alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350 carbon atoms is used as the molecule.
- examples thereof include at least one nitrogen-containing compound or derivative thereof, a Mannich dispersant, or a modified product of alkenyl succinimide. In use, one kind or two or more kinds arbitrarily selected from these can be blended.
- the alkyl group or alkenyl group may be linear or branched, and is preferably a branch derived from an olefin oligomer such as propylene, 1-butene, isobutylene, or a co-oligomer of ethylene and propylene.
- An alkyl group and a branched alkenyl group may be linear or branched, and is preferably a branch derived from an olefin oligomer such as propylene, 1-butene, isobutylene, or a co-oligomer of ethylene and propylene.
- Examples of the component (E) include one or more compounds selected from the following components (E-1) to (E-3).
- E-1) A succinimide having at least one alkyl group or alkenyl group having 40 to 400 carbon atoms in the molecule, or a derivative thereof
- E-2) benzylamine having at least one alkyl group or alkenyl group having 40 to 400 carbon atoms in the molecule, or a derivative thereof
- E-3) A polyamine having at least one alkyl group or alkenyl group having 40 to 400 carbon atoms in the molecule, or a derivative thereof.
- Examples of the component (E-1) include compounds represented by the following formula (2) or (3).
- R 2 represents an alkyl or alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350, and h represents an integer of 1 to 5, preferably 2 to 4.
- R 3 and R 4 each independently represents an alkyl group or an alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350 carbon atoms, and particularly preferably a polybutenyl group.
- I represents an integer of 0 to 4, preferably 1 to 3.
- the component (E-1) includes a so-called monotype succinimide represented by the formula (2) in which succinic anhydride is added to one end of the polyamine, and a formula in which succinic anhydride is added to both ends of the polyamine (although the so-called bis-type succinimide represented by 3) is included, any of these or a mixture thereof may be included in the composition of the present invention.
- the method for producing the succinimide as the component (E-1) is not particularly limited.
- a compound having an alkyl group or an alkenyl group having 40 to 400 carbon atoms is reacted with maleic anhydride at 100 to 200 ° C. It is obtained by reacting the obtained alkyl succinic acid or alkenyl succinic acid with a polyamine.
- the polyamine include diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and pentaethylenehexamine.
- Examples of the component (E-2) include compounds represented by the following formula (4).
- R 5 represents an alkyl or alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350 carbon atoms, and j represents an integer of 1 to 5, preferably 2 to 4.
- the method for producing the benzylamine as the component (E-2) is not particularly limited.
- a polyolefin such as a propylene oligomer, polybutene, or ethylene- ⁇ -olefin copolymer is reacted with phenol to obtain an alkylphenol.
- examples thereof include a method in which formaldehyde and a polyamine such as diethylenetriamine, triethylenetetramine, tetraethylenepentamine, or pentaethylenehexamine are reacted by a Mannich reaction.
- Examples of the component (E-3) include compounds represented by the following formula (5).
- R 6 represents an alkyl or alkenyl group having 40 to 400 carbon atoms, preferably 60 to 350, and k represents an integer of 1 to 5, preferably 2 to 4.
- the production method of the polyamine as the component (E-3) is not particularly limited.
- a polyolefin such as a propylene oligomer, polybutene, or ethylene- ⁇ -olefin copolymer
- ammonia ethylenediamine
- diethylenetriamine is added thereto.
- a method of reacting polyamines such as triethylenetetramine, tetraethylenepentamine, or pentaethylenehexamine.
- Examples of the derivative of the nitrogen-containing compound exemplified as the component (E) include, for example, monocarboxylic acids such as fatty acids having 1 to 30 carbon atoms, oxalic acid, phthalic acid, trimellitic acid, pyromellitic to the aforementioned nitrogen-containing compounds.
- monocarboxylic acids such as fatty acids having 1 to 30 carbon atoms, oxalic acid, phthalic acid, trimellitic acid, pyromellitic to the aforementioned nitrogen-containing compounds.
- the remaining amino group and / or the reaction of a polycarboxylic acid having 2 to 30 carbon atoms such as an acid, or an anhydride thereof, or an ester compound, an alkylene oxide having 2 to 6 carbon atoms, or a hydroxy (poly) oxyalkylene carbonate.
- the nitrogen-containing compound described above Examples include modified compounds in which two or more types of modifications selected from modification with oxygen-containing organic compounds, boron modification, phosphoric acid modification, and sulfur modification are combined.
- the boric acid-modified compound of alkenyl succinimide particularly the boric acid-modified compound of bis-type alkenyl succinimide, can further improve the heat resistance when used in combination with the above-mentioned component (A). .
- the content ratio of the component (E) is preferably 0.1 to 3.0% by mass, more preferably 0.2 to 2.5% by mass, based on the total amount of the composition. Particularly preferred is 0.3 to 2.0% by mass.
- the content of the component (E) is usually 0.005 to 0.4% by mass, preferably 0.01 to 0.2% by mass, and more preferably 0.005% by mass based on the total amount of the composition.
- the content is 01 to 0.1% by mass, particularly preferably 0.02 to 0.05% by mass.
- the mass ratio (B / N ratio) between the boron content and the nitrogen content is not particularly limited, but preferably 0.5 to 1 More preferably, it is 0.7 to 0.9. The higher the B / N ratio is, the easier it is to improve the wear resistance and seizure resistance.
- the content ratio is not particularly limited, but is preferably 0.001 to 0.1% by mass, more preferably 0.005 as the boron content based on the total amount of the composition. The content is 0.05 to 0.05% by mass, particularly preferably 0.01 to 0.04% by mass.
- the component (E) preferably has a boron content of 0.5% by mass or more, more preferably 1.0% by mass or more, still more preferably 1.5% by mass or more, particularly preferably. It is most desirable to include 1.8% by mass of a boron-containing ashless dispersant, in particular, a bis-type boron-containing succinimide-based ashless dispersant.
- the boron-containing ashless dispersant having a boron content of 0.5% by mass or more here includes 10 to 90% by mass, preferably 30 to 70% by mass, for example, a diluent oil such as mineral oil or synthetic oil.
- the boron content usually means the boron content in a state including a diluent oil.
- the number average molecular weight (Mn) of the ashless dispersant as the component (E) in the lubricating oil composition of the present invention is preferably 2500 or more, more preferably 3000 or more, still more preferably 4000 or more, and most preferably 5000 or more. However, it is preferably 10,000 or less. If the number average molecular weight of the ashless dispersant is less than 2500, the dispersibility may not be sufficient. On the other hand, when the number average molecular weight of the ashless dispersant exceeds 10,000, the viscosity is too high, the fluidity becomes insufficient, and the deposit increases.
- the blended amount and effective concentration of the ashless dispersant as the component (E) are preferably such that the product of the number average molecular weight (Mn) of the ashless dispersant, the blended amount and the effective concentration is 9000 or more.
- the effective concentration of the ashless dispersant of the component ratio of the mass remaining in the rubber film to the amount of the sample initially collected as a sample
- the concentration of the ash dispersant in the composition is preferably in the range of 0.9 to 14% by mass based on the total amount of the lubricating oil composition.
- the lubricating oil composition of the present invention preferably contains a sulfur-based extreme pressure agent as the other component.
- a sulfur-based extreme pressure agent include dihydrocarbyl polysulfide, sulfurized fatty acid, sulfurized olefin, sulfurized ester, sulfurized fat, sulfurized mineral oil, thiazole compound, thiadiazole compound, and alkylthiocarbamate compound.
- the lubricating oil composition of the present invention preferably contains an organic molybdenum compound.
- the organic molybdenum compound include organic molybdenum compounds containing sulfur such as molybdenum dithiophosphate and molybdenum dithiocarbamate (MoDTC); molybdenum compounds (eg, molybdenum oxide such as molybdenum dioxide and molybdenum trioxide; orthomolybdic acid, para Molybdic acid such as molybdic acid and (poly) sulfurized molybdic acid; molybdate such as metal salt and ammonium salt of molybdic acid; molybdenum sulfide such as molybdenum disulfide, molybdenum trisulfide, molybdenum pentasulfide, and polysulfide molybdenum; Metal salts or amine salts of molybdic acid, sulfurized molybdic acid, molybdenum halides such as moly
- the lubricating oil composition of the present invention preferably contains zinc dithiophosphate (ZnDTP) as an antiwear agent.
- ZnDTP zinc dithiophosphate
- the zinc dithiophosphate include 3 to 18 carbon atoms such as zinc dipropyldithiophosphate, zinc dibutyldithiophosphate, zinc dipentyldithiophosphate, zinc dihexyldithiophosphate, zinc diheptyldithiophosphate, or zinc dioctyldithiophosphate.
- a dialkyldithiophosphate zinc having a linear or branched (primary, secondary or tertiary, preferably primary or secondary) alkyl group having 3 to 10 carbon atoms
- the lubricating oil composition of the present invention is generally used in lubricating oils depending on its purpose in order to further improve its performance or to add other required performance in addition to the above components.
- Optional additives can be further included. Examples of such additives include antioxidants, ashless friction modifiers, corrosion inhibitors, rust inhibitors, demulsifiers, metal deactivators, antifoaming agents, and colorants.
- antioxidants examples include ashless antioxidants such as phenols and amines; and metal antioxidants such as zinc, copper, and molybdenum. When these are contained, the ratio is usually 0.1 to 5% by mass based on the total amount of the composition.
- ashless friction modifier examples include fatty acid ester, aliphatic amine, and fatty acid amide. When these are contained, the ratio is usually 0.1 to 5% by mass based on the total amount of the composition.
- corrosion inhibitor examples include benzotriazole, tolyltriazole, thiadiazole, and imidazole compounds.
- rust inhibitor examples include petroleum sulfonate, alkylbenzene sulfonate, dinonylnaphthalene sulfonate, alkenyl succinate, and polyhydric alcohol ester.
- demulsifier examples include polyalkylene glycol nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, and polyoxyethylene alkyl naphthyl ether.
- metal deactivator examples include imidazoline, pyrimidine derivatives, alkylthiadiazoles, mercaptobenzothiazoles, benzotriazoles or derivatives thereof, 1,3,4-thiadiazole polysulfide, 1,3,4-thiadiazolyl-2,5- Bisdialkyldithiocarbamate, 2- (alkyldithio) benzimidazole, or ⁇ - (o-carboxybenzylthio) propiononitrile.
- antifoaming agent examples include silicone oils and alkenyl succinic acid derivatives having a kinematic viscosity at 25 ° C. of less than 0.1 to 100 mm 2 / s.
- the content is usually 0.005 to 5% by mass based on the total amount of the composition, and usually 0.0005 to 1% by mass for the antifoaming agent. It is chosen from the range.
- the cylinder lubricant composition for a crosshead type diesel engine of the present invention preferably has a kinematic viscosity at 100 ° C. of 12.5 to 21.9 mm 2 / s. If the kinematic viscosity at 100 ° C. of the lubricating oil composition is 12.5 mm 2 / s or more, the oil film forming ability is sufficient, the occurrence of scuffing and excessive wear can be suppressed, and 21.9 mm 2 / If it is s or less, the spreadability between piston liners is good and sufficient lubrication performance can be maintained.
- the cylinder lubricating oil composition for a crosshead type diesel engine of the present invention preferably has a base number of 20 mgKOH / g (perchloric acid method) or more, more preferably 30 mgKOH / g or more, and even more preferably 40 mgKOH / g. In addition, it is preferably 100 mgKOH / g (perchloric acid method) or less, more preferably 80 mgKOH / g or less, and still more preferably 70 mgKOH / g or less.
- the base number of the lubricating oil composition is less than 20 mgKOH / g, the piston cleanliness is insufficient.
- the base number of the lubricating oil composition exceeds 100 mgKOH / g, excessive base number, that is, metal carbonate forms a deposit and causes wear and piston ring sticking.
- the base number is determined according to JIS K2501 “Petroleum products and lubricating oils—Neutralization number test method”. Means the base number measured by the perchloric acid method according to the above.
- the base number when using both high sulfur fuel and low sulfur fuel is preferably 50 mgKOH / g or more, more preferably 60 mgKOH / g or more, and even more preferably 70 mgKOH / g or more.
- the base number is less than 50 mgKOH / g, when high-sulfur fuel is used, the neutralizing ability of the generated acidic substance is not sufficient, and corrosion wear cannot be suppressed.
- the upper limit in this case is as described above.
- the base number is preferably 60 mgKOH / g or less, more preferably 50 mgKOH / g or less, and still more preferably 45 mgKOH / g or less.
- the base number exceeds 60 mgKOH / g, when low-sulfur fuel or gas fuel is used, there is a high possibility that wear or piston ring sticking occurs due to formation of deposits due to excessive base number, that is, metal carbonate.
- the lower limit in this case is as described above.
- the high sulfur fuel means a fuel containing 3.5% by mass or more of sulfur
- the low sulfur fuel means a fuel having a sulfur content of less than 1.0% by mass.
- a fuel having a sulfur content of 1.0% by mass or more and less than 3.5% by mass can be handled by either high sulfur fuel or low sulfur fuel.
- the sulfur content of gas is 0.1 mass% or less.
- Lubricating oil compositions having the formulations shown in Tables 1 and 2 were prepared, and a hot tube test was conducted in accordance with JPI-5S-55-99. The results are shown in Tables 1-2.
- the amount of the base oil is the content based on the total amount of the base oil, while the amount of the additive is the content based on the total amount of the composition.
- Ca sulfonate 400 mgKOH / g
- Ca phenate 150 mgKOH / g
- Antioxidant Zinc-based antioxidant, amine-based antioxidant
- PAO poly ⁇ -olefin
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
Description
(A)飽和炭化水素が90質量%以上で、硫黄分が元素量で0.03質量%以下で、粘度指数が80以上で、100℃での動粘度が10~20mm2/sである鉱油系潤滑油基油と、
(B)鉱油系潤滑油基油製造過程において、溶剤精製する際に副生するASTM D2140に規定される組成分析法による芳香族炭化水素化合物(%CA)を15%以上含有するエキストラクトを基油全量基準で3質量%以上と、
(C)炭素数が4以上のオレフィンの重合体又はその水素化物であって、100℃での動粘度が20~400mm2/sである高分子量化合物系合成油と
を含む基油に、
(D)金属系清浄剤と、
(E)無灰分散剤と
を配合してなるクロスヘッド型ディーゼル機関用シリンダー潤滑油組成物である。
(A)飽和炭化水素が90質量%以上で、硫黄分が元素量で0.03質量%以下で、粘度指数が80以上で、100℃での動粘度が10~20mm2/sである鉱油系潤滑油基油と、
(B)鉱油系潤滑油基油製造過程において、溶剤精製する際に副生するASTM D2140に規定される組成分析法による芳香族炭化水素化合物(%CA)を15%以上含有するエキストラクトを基油全量基準で3質量%以上と、
(C)炭素数が4以上のオレフィンの重合体又はその水素化物であって、100℃での動粘度が20~400mm2/sである高分子量化合物系合成油と
を含む。
1)ベンゾ[a]ピレン(BaP)
2)ベンゾ[e]ピレン(BeP)
3)ベンゾ[a]アントラセン(BaA)
4)クリセン(CHR)
5)ベンゾ[b]フルオランテン(BbFA)
6)ベンゾ[j]フルオランテン(BjFA)
7)ベンゾ[k]フルオランテン(BkFA)
8)ジベンゾ[a,h]アントラセン(DBAhA)
なお、これらの特定芳香族化合物は、対象成分を分離・濃縮した後、内部標準物質を添加した試料を調製して、GC-MS分析により定量分析することができる。
更に、上記(A)成分、(B)成分及び(C)成分を含む基油は、上記(A)成分及び(B)成分を混合した基油成分のn-d-m環分析(ASTMD3238)による%CAに(A)成分及び(B)成分の全基油中の含有比率を乗した値が2%以上17%以下でかつ、アルミナシリカクロマト分析による芳香族分が7質量%以上40質量%以下であることが特に好ましい。
(E-1)炭素数40~400のアルキル基又はアルケニル基を分子中に少なくとも1個有するコハク酸イミド、あるいはその誘導体、
(E-2)炭素数40~400のアルキル基又はアルケニル基を分子中に少なくとも1個有するベンジルアミン、あるいはその誘導体、
(E-3)炭素数40~400のアルキル基又はアルケニル基を分子中に少なくとも1個有するポリアミン、あるいはその誘導体。
R6-NH-(CH2CH2NH)k-H ・・・(5)
表1~2に示す配合処方の潤滑油組成物を調製し、JPI-5S-55-99に準拠して、ホットチューブ試験を実施した。結果を表1~2に示す。なお、表1~2中、基油の量は、基油全量基準での含有量であり、一方、添加剤の量は、組成物全量基準での含有量である。
JPI-5S-55-99に準拠して、320℃及び325℃でホットチューブ試験を実施し、試験後のテストチューブ変色部の色相の濃さの評点[0点(黒色)から10点(透明=最良)の間]で評価した。評点が高いほど、高温清浄性に優れることを示す。
鉱油系基油2:グループII基油、40℃での動粘度=387.3mm2/s、100℃での動粘度=29.4mm2/s、粘度指数=105、%CA=0、%CN=28.8%、CP=71.2、窒素分=0.01質量%未満、硫黄分=4質量ppm、飽和炭化水素=99.1質量%
合成油2:ポリブテン、40℃での動粘度=9,500mm2/s、100℃での動粘度=220mm2/s、粘度指数=107、数平均分子量=980
合成油3:ポリブテン、40℃での動粘度=160,000mm2/s、100℃=3,710mm2/s、粘度指数=257、数平均分子量=2,900
合成油4:エチレンとα-オレフィンとのコオリゴマー、40℃での動粘度=400mm2/s、100℃での動粘度=40mm2/s、粘度指数=150、数平均分子量=1,000
合成油5:ポリα-オレフィン(PAO)、炭素数8,10および12のα-オレフィンの重合体、40℃での動粘度=396mm2/s、100℃での動粘度=39mm2/s、粘度指数=147、数平均分子量=2,000
エキストラクト2:TDAE、40℃での動粘度=1,185mm2/s、100℃での動粘度=34.1mm2/s、粘度指数=14、%CA=29.5、%CN=16.3、%CP=54.2、窒素分=870ppm、硫黄分=3.8質量%、DMSO抽出PCA量=2.8質量%
エキストラクト3:RAE、40℃での動粘度=3,739mm2/s、100℃での動粘度=70.5mm2/s、粘度指数=36、%CA=33.8、%CN=7.2、%CP=59.0、窒素分=1,500ppm、硫黄分=3.7質量%、ベンゾ[a]ピレン含有量=0.5mg/kg未満、PAH8種{*(1)ベンゾ[a]アントラセン、(2)ベンゾ[b]フルオランテン、(3)ベンゾ[j]フルオランテン、(4)ベンゾ[k]フルオランテン、(5)ベンゾ[a]ピレン、(6)ジベンゾ[a,h]アントラセン、(7)トリフェニレン、(8)クリセン}=1.6mg/kg未満、MI値=0.4未満
Caフェネート:150mgKOH/g
分散剤:ホウ素化アルケニルコハク酸イミド、ホウ素含有量=1.9質量%
酸化防止剤:亜鉛系酸化防止剤、アミン系酸化防止剤
Claims (5)
- (A)飽和炭化水素が90質量%以上で、硫黄分が元素量で0.03質量%以下で、粘度指数が80以上で、100℃での動粘度が10~20mm2/sである鉱油系潤滑油基油と、
(B)鉱油系潤滑油基油製造過程において、溶剤精製する際に副生するASTM D2140に規定される組成分析法による芳香族炭化水素化合物(%CA)を15%以上含有するエキストラクトを基油全量基準で3質量%以上と、
(C)炭素数が4以上のオレフィンの重合体又はその水素化物であって、100℃での動粘度が20~400mm2/sである高分子量化合物系合成油と
を含む基油に、
(D)金属系清浄剤と、
(E)無灰分散剤と
を配合してなるクロスヘッド型ディーゼル機関用シリンダー潤滑油組成物。 - 前記(B)成分は、PCAの含有量が3質量%未満であるエキストラクトであることを特徴とする請求項1に記載のクロスヘッド型ディーゼル機関用シリンダー潤滑油組成物。
- 前記(B)成分は、MI値が1.0未満で、ベンゾ[a]ピレンの含有量が1mg/kg以下で、特定芳香族化合物(PAH)の含有量が10mg/kg以下であるエキストラクトであることを特徴とする請求項1又は2に記載のクロスヘッド型ディーゼル機関用シリンダー潤滑油組成物。
- 前記(C)成分が、ポリブテン系合成油及び/又はポリα-オレフィン系合成油であることを特徴とする請求項1~3のいずれか一項に記載のクロスヘッド型ディーゼル機関用シリンダー潤滑油組成物。
- 100℃での動粘度が12.5~21.9mm2/sで、塩基価が20~100mgKOH/g(過塩素酸法)であることを特徴とする請求項1~4のいずれか一項に記載のクロスヘッド型ディーゼル機関用シリンダー潤滑油組成物。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014540751A JPWO2014057683A1 (ja) | 2012-10-10 | 2013-10-10 | クロスヘッド型ディーゼル機関用シリンダー潤滑油組成物 |
CN201380064360.1A CN104837967A (zh) | 2012-10-10 | 2013-10-10 | 十字头型柴油机用气缸润滑油组合物 |
SG11201502834QA SG11201502834QA (en) | 2012-10-10 | 2013-10-10 | Cylinder lubricating oil composition for crosshead-type diesel engine |
KR1020157011492A KR20150065825A (ko) | 2012-10-10 | 2013-10-10 | 크로스 헤드형 디젤 기관용 실린더 윤활유 조성물 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-225431 | 2012-10-10 | ||
JP2012225431 | 2012-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014057683A1 true WO2014057683A1 (ja) | 2014-04-17 |
Family
ID=50477165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/006060 WO2014057683A1 (ja) | 2012-10-10 | 2013-10-10 | クロスヘッド型ディーゼル機関用シリンダー潤滑油組成物 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPWO2014057683A1 (ja) |
KR (1) | KR20150065825A (ja) |
CN (1) | CN104837967A (ja) |
SG (2) | SG10201702932XA (ja) |
WO (1) | WO2014057683A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016102164A (ja) * | 2014-11-28 | 2016-06-02 | 昭和シェル石油株式会社 | 潤滑油組成物 |
WO2016159215A1 (ja) * | 2015-03-31 | 2016-10-06 | 出光興産株式会社 | 4サイクルエンジン用潤滑油組成物 |
JP2016193991A (ja) * | 2015-03-31 | 2016-11-17 | 出光興産株式会社 | 4サイクルエンジン用潤滑油組成物 |
JP2016193992A (ja) * | 2015-03-31 | 2016-11-17 | 出光興産株式会社 | 4サイクルエンジン用潤滑油組成物 |
WO2023223965A1 (ja) * | 2022-05-16 | 2023-11-23 | 出光興産株式会社 | 潤滑油組成物 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110577854A (zh) * | 2018-06-11 | 2019-12-17 | Jxtg能源株式会社 | 双循环十字头型柴油发动机用汽缸润滑油组合物和其用途 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61200199A (ja) * | 1985-03-04 | 1986-09-04 | Idemitsu Kosan Co Ltd | 舶用機関ならし運転用潤滑油組成物 |
JPH1180434A (ja) * | 1997-09-12 | 1999-03-26 | Nippon Oil Co Ltd | ゴム配合油 |
JP2010519376A (ja) * | 2007-02-21 | 2010-06-03 | ビーピー ピー・エル・シー・ | 潤滑油基油、潤滑組成物、及びそれらの製造方法 |
JP2010229314A (ja) * | 2009-03-27 | 2010-10-14 | Jx Nippon Oil & Energy Corp | ゴム配合油及びその製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4195110B2 (ja) * | 1997-04-15 | 2008-12-10 | 新日本石油株式会社 | 潤滑油組成物 |
JP2002047498A (ja) * | 2000-08-01 | 2002-02-12 | Nippon Mitsubishi Oil Corp | 高硫黄エンジン油組成物 |
JP5101915B2 (ja) * | 2007-03-27 | 2012-12-19 | Jx日鉱日石エネルギー株式会社 | ディーゼル機関用潤滑油組成物 |
JP5241122B2 (ja) * | 2007-03-27 | 2013-07-17 | Jx日鉱日石エネルギー株式会社 | 銀含有材料と接触する潤滑油組成物 |
JP5483329B2 (ja) * | 2009-12-24 | 2014-05-07 | Jx日鉱日石エネルギー株式会社 | クロスヘッド型ディーゼル機関用シリンダー潤滑油組成物 |
JP5727713B2 (ja) * | 2010-03-19 | 2015-06-03 | 出光興産株式会社 | 内燃機関用潤滑油組成物 |
-
2013
- 2013-10-10 WO PCT/JP2013/006060 patent/WO2014057683A1/ja active Application Filing
- 2013-10-10 CN CN201380064360.1A patent/CN104837967A/zh active Pending
- 2013-10-10 SG SG10201702932XA patent/SG10201702932XA/en unknown
- 2013-10-10 JP JP2014540751A patent/JPWO2014057683A1/ja active Pending
- 2013-10-10 KR KR1020157011492A patent/KR20150065825A/ko not_active Application Discontinuation
- 2013-10-10 SG SG11201502834QA patent/SG11201502834QA/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61200199A (ja) * | 1985-03-04 | 1986-09-04 | Idemitsu Kosan Co Ltd | 舶用機関ならし運転用潤滑油組成物 |
JPH1180434A (ja) * | 1997-09-12 | 1999-03-26 | Nippon Oil Co Ltd | ゴム配合油 |
JP2010519376A (ja) * | 2007-02-21 | 2010-06-03 | ビーピー ピー・エル・シー・ | 潤滑油基油、潤滑組成物、及びそれらの製造方法 |
JP2010229314A (ja) * | 2009-03-27 | 2010-10-14 | Jx Nippon Oil & Energy Corp | ゴム配合油及びその製造方法 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016102164A (ja) * | 2014-11-28 | 2016-06-02 | 昭和シェル石油株式会社 | 潤滑油組成物 |
WO2016159215A1 (ja) * | 2015-03-31 | 2016-10-06 | 出光興産株式会社 | 4サイクルエンジン用潤滑油組成物 |
JP2016193991A (ja) * | 2015-03-31 | 2016-11-17 | 出光興産株式会社 | 4サイクルエンジン用潤滑油組成物 |
JP2016193992A (ja) * | 2015-03-31 | 2016-11-17 | 出光興産株式会社 | 4サイクルエンジン用潤滑油組成物 |
WO2023223965A1 (ja) * | 2022-05-16 | 2023-11-23 | 出光興産株式会社 | 潤滑油組成物 |
Also Published As
Publication number | Publication date |
---|---|
SG11201502834QA (en) | 2015-05-28 |
JPWO2014057683A1 (ja) | 2016-09-05 |
KR20150065825A (ko) | 2015-06-15 |
SG10201702932XA (en) | 2017-06-29 |
CN104837967A (zh) | 2015-08-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107541317B (zh) | 内燃机用润滑油组合物 | |
KR102074883B1 (ko) | 크로스헤드형 디젤 기관용 시스템 윤활유 조성물 | |
JP6046156B2 (ja) | クロスヘッド型ディーゼル機関用システム潤滑油組成物 | |
EP2518135B2 (en) | System lubricant oil composition for crosshead-type diesel engine | |
JP7320935B2 (ja) | 潤滑油組成物 | |
WO2014057683A1 (ja) | クロスヘッド型ディーゼル機関用シリンダー潤滑油組成物 | |
JPWO2018212339A1 (ja) | 内燃機関用潤滑油組成物 | |
JPWO2019221296A1 (ja) | 内燃機関用潤滑油組成物 | |
EP3636730B1 (en) | Internal combustion engine lubricating oil composition | |
JP6155275B2 (ja) | トランクピストン型ディーゼル機関用潤滑油組成物 | |
JP5952184B2 (ja) | クロスヘッド型ディーゼル機関用システム潤滑油組成物 | |
JP5913338B2 (ja) | クロスヘッド型ディーゼル機関用シリンダー潤滑油組成物 | |
JP7085469B2 (ja) | トランクピストン型ディーゼル機関用潤滑油組成物 | |
JP5952183B2 (ja) | クロスヘッド型ディーゼル機関用システム潤滑油組成物 | |
WO2019221295A1 (ja) | 内燃機関用潤滑油組成物 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13846148 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2014540751 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20157011492 Country of ref document: KR Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13846148 Country of ref document: EP Kind code of ref document: A1 |