WO2009082033A1 - 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
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- WO2009082033A1 WO2009082033A1 PCT/JP2008/073949 JP2008073949W WO2009082033A1 WO 2009082033 A1 WO2009082033 A1 WO 2009082033A1 JP 2008073949 W JP2008073949 W JP 2008073949W WO 2009082033 A1 WO2009082033 A1 WO 2009082033A1
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/20—Thiols; Sulfides; Polysulfides
- C10M135/28—Thiols; Sulfides; Polysulfides containing sulfur atoms bound to a carbon atom of a six-membered aromatic ring
- C10M135/30—Thiols; Sulfides; Polysulfides containing sulfur atoms bound to a carbon atom of a six-membered aromatic ring containing hydroxy groups; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
- C10M159/12—Reaction products
- C10M159/20—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products
- C10M159/22—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products containing phenol radicals
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/20—Thiols; Sulfides; Polysulfides
-
- 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
- C10M139/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing atoms of elements not provided for in groups C10M127/00 - C10M137/00
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
- C10M2219/088—Neutral salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
- C10M2219/089—Overbased salts
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- 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
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- 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
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- 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
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- 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 lubricating oil composition for a cross-head type diesel engine and a method for lubricating a cylinder of a cross-head type diesel engine using the composition.
- the cross-head type diesel engine used in marine diesel engines uses cylinder oil that lubricates between the cylinder and the piston, and system oil that controls lubrication and cooling of other parts. Cylinder oil is required to have the proper viscosity required for lubrication between the cylinder and piston (piston ring) and the function of maintaining the cleanliness necessary for proper movement of the piston and piston ring.
- This engine usually has a problem of cylinder corrosion due to acidic components such as sulfuric acid produced by combustion because high sulfur fuel with a high sulfur content is used from the economical point of view.
- the cylinder oil is also required to have a function to neutralize the acidic components produced and prevent corrosion.
- Recent cross-head type diesel engines have achieved further performance improvements, such as an increase in cylinder diameter with a pore size of 70 cm or more and an ultra-long stroke with an average piston speed of 8 mZ s or more. For this reason, the piston stroke tends to increase, and the net effective pressure ( ⁇ ⁇ P) tends to increase the combustion pressure to 1 .. 8 MPa or more.
- These improvements in performance improvement are factors that increase the wall temperature of pistons and cylinders.
- an increase in combustion pressure leads to an increase in the sulfuric acid drip point, making the cylinder susceptible to sulfuric acid corrosion. In order to prevent this sulfuric acid corrosion, for example, a method of increasing the wall temperature of the cylinder by 2 50 or more is employed.
- the amount of lubricating oil injected into cylinders has also been decreasing for economic reasons. From the above points, the lubrication environment of cylinders is becoming more severe, and cylinder oils are required to have higher heat resistance than before.
- Patent Document 1 Japanese Patent Laid-Open No. 2 0 0 2—2.7 5 4 9 1
- Patent Document 2 Special Table 2 0 0 2-5 1 5 9 3 3
- Patent Document 3 Special Table 2 0 0 2-5 0 1 9 7 4
- Patent Document 4 Special Table 2 0 0 2-5 0 0 2 6 2
- Patent Document 5 Japanese Patent Application Laid-Open No. 2 0 0 2-2 4 1 7 8 0
- An object of the present invention is to provide a cylinder lubricating oil composition for a crosshead engine having particularly excellent heat resistance and excellent seizure resistance, and a lubricating method for a cylinder of a crosshead engine using the composition. It is in. ,
- Another subject of the present invention is a cross-head engine cylinder lubricating oil composition that is particularly excellent in heat resistance, has fluidity that can spread in a short time on the cylinder surface, and has excellent wear prevention and seizure resistance. To provide things.
- a lubricant base oil comprising at least one of mineral oil and synthetic oil, and a phenate metal detergent (A) having an alkylphenol sulfide metal salt containing five or more alkylphenol structures in the same molecule.
- a cross-head diesel engine cylinder lubricant composition is provided.
- a method for lubricating a cylinder of a cross-head type diesel engine comprising supplying the lubricating oil composition to a cylinder of the cross-head type diesel engine.
- the lubricating oil composition of the present invention contains the phenate-based metal detergent (A), it is excellent in heat resistance. Also, the phenate-type metal detergent (A) and a phenate-type other than the component (A) By including a metal cleaner, in addition to heat resistance, it also has excellent fluidity and spreadability on sliding surfaces at high temperatures. Therefore, it is suitable as a cylinder lubricant composition for a crosshead type diesel engine.
- B ME P Combustion pressure at net effective pressure
- the lubricating oil composition of the present invention can also be used as various marine diesel engine oils other than crosshead type diesel engine cylinder oils and cogeneration diesel engine oils.
- the lubricating base oil in the cylinder-lubricating oil composition for a crosshead type diesel engine of the present invention (hereinafter simply referred to as the composition of the present invention), and it is used for ordinary lubricating oil.
- Mineral oil and Z or synthetic oil can be used.
- lubricating oil fraction obtained by distillation under reduced pressure of atmospheric residue obtained by atmospheric distillation of crude oil is solvent desorbed, solvent extraction, hydrocracking, solvent dewaxing, hydrorefining, etc.
- the total aromatic content of the mineral oil is not particularly limited, but is preferably 40% by mass or less, more preferably 30% by mass or less.
- the total aromatic content may be 0% by mass, but is preferably 1% by mass or more, more preferably 5% by mass or more, more preferably 10% by mass or more, and 20% by mass in terms of the solubility of the additive. The above is particularly preferable. If the total aromatic content of the base oil exceeds 40% by mass, the oxidation stability may be poor.
- the above total aromatic content means the aromatic fraction content measured according to ASTM D2549.
- this aromatic fraction includes alkylbenzene, alkylnaphthalene, anthracene, phenanthrene, alkylated products thereof, compounds in which benzene rings are condensed by four or more rings, pyridines, quinolines, phenols, naphthols, etc. Compound power with heteroaromatic S is included.
- the sulfur content in the mineral oil is not particularly limited, but is preferably 1% by mass or less, and more preferably 0.5% by mass or less.
- the sulfur content may be 0% by mass, but is preferably 0.1% by mass or more, more preferably 0.2% by mass or more.
- the solubility of the additive can be sufficiently increased. [0 0 1 1]
- Synthetic oils include, for example, polybutene or hydrides thereof; poly (3-olefins or hydrides thereof) such as 1-octene oligomers and 1-decene oligomers; ditridecyl glutarate, Diesters such as ditridecyl adipate and di-2-ethylhexyl sebacate; trimethylol propane caprylate, trimethylol propane pelargonate, pen erythritol] Polyol ester; copolymer of dicarboxylic acid such as dibutyl maleate and ⁇ -olefin having 2 to 30 carbon atoms; aromatic synthetic oil such as alkylnaphthalene, alkylbenzene, aromatic 3 ⁇ 4 ester, or a mixture thereof. Can be mentioned.
- mineral oil and oil or synthetic oil can be used as the lubricating base oil.
- examples include one or more mineral oils, one or more synthetic oils, and a mixture of one or more mineral oils and one or more synthetic oils.
- the kinematic viscosity of the lubricating base oil is not particularly limited, but the kinematic viscosity at 100 is preferably 4 to 50 mm 2 Zs, more preferably 6 to 40 mm 2 s, particularly preferably 8 to 3 5 mrr ⁇ Zs. If the kinematic viscosity of the lubricating base oil at 100 0 exceeds 50 mm s, the low-temperature viscosity characteristics may deteriorate. On the other hand, if the kinematic viscosity is less than 4 mm 2 Zs, the oil film is not sufficiently formed at the lubrication point, so that the lubricity is inferior and the evaporation loss of the base oil may increase.
- the lubricant base oil has a kinematic viscosity at 100 and less than 4 to 1.7! 11111 2 8 and / or a kinematic viscosity at 100 and 17 to 50 mm 2 Zs. It is preferable to contain an oil base oil.
- Examples of the lubricating base oil having a kinematic viscosity at 10 0 less than 4 to 17 mm 2 Zs include mineral base oils such as SAE 10 0 to 40 and synthetic base oils.
- the preferable kinematic viscosity is 5.6 mm 2 Zs or more, more preferably 9.3 mm 2 / s or more, preferably 14 mn ⁇ Zs or less, more preferably 12.5 mm 2 Zs or less.
- Examples of the lubricating base oil having a kinematic viscosity at 10 0 to 17 to 50 mm 2 Zs include mineral base oils and synthetic base oils such as SAE 50 and bright stock.
- the viscosity is 20 mm s or more, more preferably 25 mm 2 s or more, preferably 40 mm 2 Zs or less, and more preferably 35 mm 2 / s or less.
- a lubricant base oil having a kinematic viscosity at 100 0 less than 4 to 17 mm 2 Zs for example, 40% by mass or more or 50% by mass or more based on the total amount of the lubricant base oil
- a lubricating base oil having a kinematic viscosity at 100 and a viscosity of 17 to 5 O mm ⁇ s can be blended.
- the evaporation loss of the lubricating base oil is preferably 20% by mass or less in terms of NOACK evaporation, more preferably 16% by mass or less, and particularly preferably 1% by mass or less.
- NOACK evaporation refers to the amount of lubricant evaporation measured according to ASTM D 5800. -[0 0 1 5]
- the viscosity index of the lubricating base oil is not particularly limited, but the value is preferably 80 or more, more preferably 90 or more, more preferably 100 or more so that excellent viscosity characteristics from low temperature to high temperature can be obtained. It is.
- the upper limit of the viscosity index is not particularly limited, and those of about 1 35 to 180, such as normal paraffin, sack wax, GTL wax, isoparaffin mineral oil isomerized from these, complex ester base oil, HVI -PAO base oil such as about 1550 to 2500 can also be used. From the standpoint of solubility of the additive and storage stability, the upper limit of the viscosity index is preferably 120 or less, and more preferably 110 or less.
- the phenate-based metal detergent (A) used in the present invention (hereinafter sometimes referred to as the component (A)) has an alkylphenol sulfide metal salt containing 5 or more alkylphenol structures in the same molecule.
- the metal detergent which contains essentially is mentioned.
- Al-strength metal or Al-strength earth metal examples include, for example, sodium, strength rhium, magnesium, barium, and calcium. Magnesium or calcium is preferable, and calcium strength is particularly preferable.
- each R independently represents a linear or branched, saturated or unsaturated alkyl group having 6 to 21 carbon atoms.
- the number of carbon atoms of the alkyl group is preferably 9-18, more preferably 9-15. If the carbon number is shorter than 6, the solubility in the lubricating base oil may be poor. If the carbon number is longer than 21, the production is difficult and the heat resistance may be poor.
- the degree of polymerization m is 1 to 10
- X is 1 to 3.
- the content ratio of the alkylphenol sulfide metal salt having a polymerization degree m of 4 or more represented by formula (1) is preferably 5 to 50 mol%.
- the component (A) preferably contains a component having an m of 4 to 5 among the components having a polymerization degree m of 4 or more represented by the formula (1), which is an essential component. Furthermore, it is preferable to contain 5 mol% or more of components having m of 4-5.
- the base number of component (A) is preferably in the range of 50 to 40 OmgKOHZg, more preferably in the range of 100 to 35 OmgKOH / g, and still more preferably in the range of 120 to 30 Orftg KOH / g. If the base number is 5 OmgKOHZg or less, corrosion wear may increase, and if it exceeds 40 OmgKOHZg, there may be a problem in solubility.
- the base number means a salt value by the perchloric acid method measured according to 7. of JISK2501 “Petroleum products and lubricants-Neutralization number test method”.
- the metal ratio of component (A) is not particularly limited, and usually the lower limit is 1 or more, preferably 2 or more, particularly preferably 2.5 or more, and the upper limit is preferably 20 or less, more preferably 15 or less, particularly preferably 10 It is as follows.
- the metal ratio means the valence X of the metal element in the phenate metal detergent X metal element content (mol%) Z soap group content (mol%).
- the metal element means calcium, magnesium, etc.
- the soap group means a phenol group.
- the content ratio of the component (A) is preferably 3 to 20% by mass, more preferably 6 to 12% by mass, and particularly preferably 8 to 12% by mass based on the total amount of the composition. . If the content is less than 3% by mass, the required heat resistance may not be obtained, and if it exceeds 20% by mass, there may be a problem with fluidity.
- composition of the present invention may further contain a metallic detergent other than the above component (A) (hereinafter, also referred to as component (B)).
- the component (B) is, for example, one selected from the group consisting of phenate metal detergents other than the component (A), sulfonate detergents, salicylate detergents, carboxylate detergents, and phosphonate detergents.
- phenate metal detergents other than the component (A) sulfonate detergents
- salicylate detergents sulfonate detergents
- carboxylate detergents phosphonate detergents.
- phosphonate detergents Hue other than the component.
- component (B1) examples include an alkyl phenol metal salt, an alkyl metal salt of an alkylphenol sulfide having a structure represented by the formula (2), or an (over) basic salt thereof.
- Al-strength metal or al-strength earth metal examples include sodium, strong-lium, magnesium, barium, and calcium. Magnesium or calcium is preferable, and calcium is particularly preferable. ;
- each R independently represents a linear or branched, saturated or unsaturated alkyl group having 6 to 21 carbon atoms.
- the alkyl group preferably has 9 to 18 carbon atoms, and more preferably 9 to 15 carbon atoms. If the carbon number is shorter than 6 J, the solubility in the lubricating base oil may be poor. If the carbon number is longer than 21, the production is difficult and the heat resistance may be poor.
- the degree of polymerization n in the formula (2) is 1 to 3, and X is 1 to 3.
- the base number of component (B1) is preferably in the range of 5.0 to 40 OmgKOHZg, more preferably in the range of 100 to 35 OmgKOHZg, and still more preferably in the range of 120 to 300 mg KOH / g. If the base number is 5 OmgKOHZg or less, corrosion wear may increase, and if it exceeds 40 OmgKOHZg, there may be a problem in solubility. ,
- the base number means the base number by the perchloric acid method measured according to 7. of JISK2501 “Petroleum products and lubricants-Neutralization number test method”.
- the metal ratio of the component (B1) is not particularly limited. Usually, the lower limit is 1 or more, preferably 2 or more, particularly preferably 2.5 or more, and the upper limit is preferably 20 or less, more preferably 15 or less, particularly preferably. Is less than 10. [0 0 2 7]
- the content ratio of the component (A) when the component (B1) is essential is preferably 3 to 20% by mass, more preferably 4 to 15% by mass based on the total amount of the composition. %, More preferably 6 to 12% by mass, particularly preferably 8 to 12% by mass. If the content is less than 3% by mass, the required heat resistance may not be obtained, and if it exceeds 20% by mass, there may be a problem with fluidity.
- the proportion when the component (B1) is contained is usually 1 to 10% by mass, preferably 2 to 9% by mass, more preferably 3 to 8%, based on the total amount of the composition. It is mass%.
- the content is less than 1% by mass, the fluidity may not be improved sufficiently, and when it exceeds 10% by mass, the required heat resistance may not be obtained.
- the ratio of the component (B1) / the component (A) is preferably 0.1 to 1: 1.5, 0.2 to 1.2. Is more preferable, and 0.3 to I is more preferable. If this ratio is less than 0.1, the fluidity may not be improved sufficiently, and if it exceeds 1.5, the required heat resistance may not be obtained.
- the sulfonate detergent as the component (B) can be obtained, for example, by sulfonating an alkyl aromatic compound having a weight average molecular weight of 130 to 1,500, preferably 400 to 700.
- Alkali metal salts, alkaline earth metal salts or (over) basic salts of alkyl aromatic sulfonic acids can be used.
- alkali metal or alkaline metal include sodium, potassium, magnesium, barium, calcium, magnesium or calcium is preferable, and calcium is particularly preferable.
- alkyl aromatic sulfonic acid examples include so-called petroleum sulfonic acid and synthetic sulfonic acid.
- Examples of petroleum sulfonic acids include so-called mahoganic acid, which is a by-product of white oil production, as a result of sulfonation of an alkyl aromatic compound in a lubricating oil fraction of mineral oil.
- Synthetic sulfonic acids can be obtained, for example, as a by-product from an alkylbenzene production plant that is used as a raw material for detergents, or can be obtained by alkylating polyolefin with benzene, linear or branched alkyls. Examples thereof include those obtained by sulfonating alkylbenzene having a group, or those obtained by sulfonating alkylnaphthalene such as dinonylnaphthalene. There are no particular restrictions on the sulfonating agent used when sulfonating these alkyl aromatic compounds, but fuming sulfuric acid or anhydrous sulfuric acid is usually used. [0 0 3 1]
- Examples of the salicylate-based detergent as the component (B) include, for example, Al-strength metal having one hydrocarbon group having 1 to 19 carbon atoms, Al-strength earth metal salicylate, or its (super) base. Salt, Al-strength metal having one hydrocarbon group having 20 to 40 carbon atoms, Al-strength earth metal salicylate or its (over) basic salt, carbonization having 1 to 40 carbon atoms Examples thereof include an alkali metal having two or more hydrogen groups, an alkaline earth metal salicylate, or a (over) basic salt thereof. These hydrocarbon groups may be the same or different. Among these, it is desirable to use an alkali metal, an alkaline earth metal salicylate having one hydrocarbon group having 8 to 19 carbon atoms, or a (over) basic salt thereof in terms of excellent low temperature fluidity.
- alkali metal or alkaline earth metal examples include sodium, potassium, magnesium, barium, and calcium.
- Magnesium, Z, and calcium are preferable, and calcium is particularly preferably used.
- the base number of the component (B) other than the component (B1) is preferably in the range of 100-500 mg KO HZ g, and in the range of 120-45 O mg KOHZ g. Is more preferable, and the range of 1 50 to 40 O mg KOHZ g is still more preferable. If this base number is less than 10 O mg KO HZ g, corrosion wear may increase, and if it exceeds 500 mg K 0 HZ g, there may be a problem in solubility.
- the base number means the base number by the perchloric acid method measured in accordance with 7. of JIS K2501 “Petroleum products and lubricants-Neutralization number test method”.
- the metal ratio of the component (B) other than the component (B1) is not particularly limited, but the lower limit is 1 or more, preferably 2 or more, particularly preferably 2.5 or more, and the upper limit is preferably 2 It is desirable to use 0 or less, more preferably 15 or less, particularly preferably 10 or less.
- the proportion in the case of containing the component (B) other than the component (B1) is usually 5 to 30% by mass, preferably 6 to 20% by mass, particularly based on the total amount of the composition. Preferably it is 7-15 mass%.
- composition of the present invention comprises an ashless dispersant (C) (hereinafter may be referred to as component (C)) and Z or extreme pressure agent / antiwear agent (D) (hereinafter also referred to as component (D)). It is preferable to contain.
- C ashless dispersant
- D extreme pressure agent / antiwear agent
- any ashless dispersant used in lubricating oils can be used, for example, a linear or branched alkyl group having 40 to 400, preferably 60 to 35, carbon atoms.
- a nitrogen-containing compound having at least one alkenyl group in the molecule or a derivative thereof, a Mannich dispersant, or a modified product of alkenyl succinimide In use, one or two or more arbitrarily selected from these can be blended.
- the carbon number of the alkyl group or alkenyl group of the nitrogen-containing compound or derivative thereof is less than 40, the solubility in the lubricating base oil decreases, whereas the carbon number of the alkyl group or alkenyl group is 40.
- the alkyl group or alkenyl group may be linear or branched, but is preferably a component derived from an oligomer of olefin such as propylene, 1-butene, isobutylene, or a co-oligomer of ethylene and propylene. Examples thereof include a branched alkyl group and a branched alkenyl group.
- Examples of the component (C) include one or more compounds selected from the following components (C1) to (C3).
- (C3) 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 (C1) include compounds represented by the formula (3) or (4). .
- R 20 represents an alkyl group or alkyl group having 40 to 40,000 carbon atoms, preferably 60 to 35, and h is 1 to 5, preferably 2 to 4. Indicates an integer.
- R 21 and R 22 each independently represent an alkyl group or an alkenyl group having 40 to 40, preferably 60 to 35, carbon atoms, particularly preferably a polybutenyl group. It is. I is 0-4, preferably :! Indicates an integer of ⁇ 3. [0 0 3 7]
- the component (CI) includes a so-called monotype succinimide represented by the formula (3) in which succinic anhydride is added to one end of the polyamine, and a formula (4) in which succinic anhydride is added to both ends of the polyamine.
- a so-called monotype succinimide represented by the formula (3) in which succinic anhydride is added to one end of the polyamine
- a formula (4) in which succinic anhydride is added to both ends of the polyamine.
- any of them or a mixture thereof may be contained.
- the method for producing the succinimide as the component (C1) is not particularly limited.
- a compound having an alkyl group or an alkenyl group having 40 to 400 carbon atoms can be obtained by combining maleic anhydride and 100 to 200. It can be obtained by reacting an alkyl succinic acid or alkenyl succinic acid obtained by reaction with a polyamine.
- polyamine examples include diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and penethyleneethylenehexamine.
- component (C2) examples include compounds represented by formula (5).
- R 23 represents an alkyl group or alkenyl group having 40 to 40, preferably 60 to 35, carbon atoms, and j is 1 to 5, preferably 2 to 4. Indicates an integer.
- benzylamine as the component (C2) .
- a polyolefin such as propylene oligomer, polybutene, or ethylene- ⁇ -olefin copolymer is reacted with phenol to obtain an alkylphenol. It is obtained by reacting formaldehyde with a polyamine such as diethylenetriamine, triethyleneteramine, tetraethylenepentamine, or penethyleneethylenehexamine by Mannich reaction.
- Examples of the component (C3) include compounds represented by the formula (6).
- R 24 represents an alkyl group or an alkyl group having 40 to 400, preferably 60 to 35, carbon atoms, k is 1 to 5, preferably 2 to 4 Indicates an integer.
- the production method of the polyamine is not particularly limited. Min, Toryech It can be obtained by reacting polyamines such as lentetramine, tetraethylene penamine, or pen ethylene hexamine.
- Examples of the derivative of the nitrogen-containing compound mentioned as an example of the component (C) include, for example, monocarboxylic acids such as fatty acids such as the above-mentioned nitrogen-containing compounds having 1 to 30 carbon atoms, fumaric acid, ⁇ Polycarboxylic acids with 2 to 30 carbon atoms such as limeletic acid and pyromellitic acid or their anhydrides, ester compounds, alkylene oxides with 2 to 6 carbon atoms, hydroxy (poly) oxyalkylene carbonate, etc.
- monocarboxylic acids such as fatty acids such as the above-mentioned nitrogen-containing compounds having 1 to 30 carbon atoms, fumaric acid, ⁇
- Polycarboxylic acids with 2 to 30 carbon atoms such as limeletic acid and pyromellitic acid or their anhydrides
- ester compounds alkylene oxides with 2 to 6 carbon atoms
- hydroxy (poly) oxyalkylene carbonate etc.
- boric acid-modified compounds of alkenyl succinimides particularly boric acid-modified compounds of bis-type alkenyl succinimides, have heat resistance when used in combination with the above-mentioned components (A) to (C). Further improvement can be achieved.
- the proportion in the case of containing the component (C) is usually from 0.05 to 0.4% by mass, preferably from 0.001 to 0 as the amount of nitrogen, based on the total amount of the composition. 2% by mass, more preferably 0.1 to 0.1% by mass, and particularly preferably 0.02 to 0.05% 3 ⁇ 4% by mass.
- the mass ratio (BZN ratio) between the boron content and the nitrogen content is not particularly limited, but is preferably 0.5 to 1. More preferably, it is 0.7 to 0.9. The higher the BZN ratio, the easier it is to improve wear resistance and seizure resistance. If it exceeds 1, there is concern about stability.
- the content ratio is not particularly limited, but is preferably from 0.001 to 0.1% by mass, more preferably from 0 to 0.1% by mass, based on the total amount of the composition. 0.05 to 0.05 mass%, particularly preferably 0.01 to 0.04 mass%.
- the boron content is 0.5% by mass or more, more preferably 1.0% by mass or more, further preferably 1.5% by mass or more, and particularly preferably 1.8%. It is most desirable to contain a mass% 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 as referred to here is 1 0 to 90% by mass, preferably 30 to 0% by mass, for example, a diluent oil such as mineral oil or synthetic oil may be included, and the boron content is usually in a state including the diluent oil. This means the boron content of. '
- any extreme pressure agent / antiwear agent used in lubricating oils can be used.
- sulfur-based, phosphorus-based, sulfur-one, and phosphorus-based extreme pressure agents can be used.
- zinc dithiophosphate and Z or polysulfide as the component (D).
- the content ratio is not particularly limited, but is usually from 0.5 to 5% by mass, preferably from 0.1 to 2% by mass based on the total amount of the composition Particularly preferred is 0.2 to 1 mass.
- the content of component (D) is less than 0.05% by mass, the effect of further improving the wear resistance and seizure resistance is small, whereas when it exceeds 5% by mass, the composition is clean at high temperatures. There is a risk of serious deterioration.
- composition of the present invention is an arbitrary composition commonly used in lubricating oils depending on the purpose in order to further improve its performance or add other required performance in addition to the above-described configuration.
- Additives can be further included. Examples of such additives include antioxidants, friction modifiers, viscosity index improvers, corrosion inhibitors, antifungal agents, demulsifiers, metal deactivators, antifoaming agents, and colorants. .
- antioxidants examples include ashless antioxidants such as phenols and amines; and metal antioxidants such as copper and molybdenum.
- the ratio in the case of containing these is usually 0.1 to 5% by mass based on the total amount of the composition.
- friction modifier examples include ashless friction modifiers such as fatty acid esters, aliphatic amines, and fatty acid amides; and metal friction modifiers such as molybdenum dithiocarbamate and molybdenum dithiophosphate. When these are contained, the ratio is usually 0.1 to 5% by mass based on the total amount of the composition. '
- viscosity index improvers examples include polymethacrylate viscosity index improvers, polyolefin copolymer viscosity index improvers, styrene-gen copolymer viscosity index improvers, and styrene-maleic anhydride ester copolymer viscosity indexes. Examples thereof include improvers and polyalkylstyrene viscosity index improvers.
- the weight-average molecular weight of these viscosity index improvers is usually from 80 to 0:00, preferably from 100 to 000.
- the ratio when the viscosity index improver is contained is usually 0.1 to 20% by mass based on the total amount of the composition. , '
- corrosion inhibitor examples include benzotriazol, triaryltriazole, thiadiazol, and imidazole compounds.
- antifungal agent examples include petroleum sulfonate, alkylbenzene sulfonate, dinonylnaphthalene sulfonate, alkenyl succinic acid ester, and polyhydric alcohol ester.
- demulsifier examples include polyalkylene glycol-based nonionic surfactants such as polyoxyethylene alkyl ether, polyoxy: I-tylene alkyl phenyl ether, or polyoxyethylene alkyl naphthyl ether.
- metal deactivator examples include imidazoline, pyrimidine derivatives, alkyl thiadiazoles, mercaptobenzozoazoles, benzotriazoles or derivatives thereof, 1, 3, 4-thiadiazole polysulfides, 1, 3, 4-thiadiazolyl — 2,5 monobisdialkyldithiocarbamate, 2- (alkyldithio) benzimidazole, or i8- (o-carboxybenzylthio) propiononitrile.
- antifoaming agents include kinematic viscosities at 25: 0:! To less than 100 mm 2 / s D corn oil, alkenyl succinic acid derivatives, esters of polyhydroxy fatty alcohols and long chain fatty acids, Methyl salicylate and ⁇ -hydroxybenzyl alcohol, aluminum stearate, potassium oleate, ⁇ -dialkylarylamine nitroamino alcohol, aromatic ammine salt of isoamyloctyl phosphate, alkylalkylene diphosphate, metal of thioether Derivatives, metal derivatives of disulfides, aliphatic hydrocarbon fluorine compounds, triethylsilane, dichlorosilane, alkyl polyethylene glycol ether sulfide, and fluoroalkyl ether.
- the content is usually 0.05 to 5% by mass for each of the corrosion inhibitor, the antifungal agent and the demulsifier, based on the total amount of the composition.
- the content is usually 0.05 to 5% by mass for each of the corrosion inhibitor, the antifungal agent and the demulsifier, based on the total amount of the composition.
- metal deactivators usually 0.05-1% by mass
- antifoaming agents usually 0.05-1% by mass It is chosen from the range. '
- the kinematic viscosity at 100 of the composition of the present invention is not particularly limited, but is preferably 6 to 50 mm 2 / s, more preferably 9.3 to 30 mm 2 Zs, and particularly preferably 12.5 to 21.9 mm 2/2. s.
- the kinematic viscosity at 100 here means the kinematic viscosity at 100 as defined in ASTM D-445.
- the base number of the composition of the present invention is not particularly limited, it is preferable to add excellent high temperature cleanliness and acid neutralization performance even when using a high sulfur fuel containing asphaltene.
- 5-: 10 OmgKOHZg the lower limit is more preferably 1 OmgKOH / g or more, still more preferably 2 OmgKOHZg or more, and the upper limit is more preferably 90 mgKOH / g or less, more preferably 8 OmgKOHZg or less.
- the base number refers to a base number measured by ASTM D-2896. .
- the lower limit of the amount of metal is preferably 0.2% by mass or more, more preferably 0.4% by mass or more, still more preferably 0.7% by mass or more, and the upper limit is preferably 3. 6% by mass or less, more preferably 3.2% by mass or less, and further preferably 2.9% by mass or less. If the metal content is less than 0.2% by mass, the neutralizing power of acidic substances generated by combustion may not be sufficient, and high-temperature cleanliness may not be sufficiently exhibited. On the other hand, if it exceeds 3.6% by mass, the ash after adhering to the piston and burning may adhere to the piston and increase the wear of the cylinder. ,
- the amount of sulfated ash is not particularly limited, but the lower limit is preferably 1.2% by mass or more, more preferably 2% by mass or more, particularly preferably 3% by mass or more, and the upper limit is preferably 20% by mass or less, more preferably 10% by mass or less.
- the sulfated ash here refers to the value measured by the method specified in 5. JIS K2272 “Testing method for sulfated ash” and is mainly attributed to metal-containing additives.
- a method of lubricating a cylinder of a cross-head type diesel engine according to the present invention includes supplying the above-described lubricating oil composition of the present invention to a cylinder of a cross-head type diesel engine.
- the bore size is increased to more than 70 cm, and the average piston speed is more than 8 mZs, and even more than 8.5 mZs.
- Ultra-long stroke, net combustion pressure Conditions that satisfy any or all of the conditions such that effective pressure (BMEP) is 1.8 MPa or more, more than 1.9 MPa, cylinder wall temperature is 250 or more, further 260 or more, especially 270 or more.
- a two-stroke cycle diesel engine operated at is preferred.
- Lubricating oil compositions according to the present invention having compositions shown in Table 1 (Examples 1-11-1-4) and comparative lubricating oil compositions (Comparative Examples 1 and 2) were prepared. About the obtained composition, the hot cleanability was evaluated by the hot tube test. The results are shown in Table 1.
- the base oil used here is SAE 30 Group I base oil (sulfur content 0.03 mass% or more, saturation content less than 90 mass%, viscosity index 80 to 120) and bright stock. Adjust the composition so that the kinematic viscosity at 100 0 in the state with additives added is 20 mms, and the base number of the composition is 7 O mg KOHZ g. System cleaner was added.
- the heat resistance was evaluated in accordance with JPI-5S-55-99 (hot tube test), for evaluating the high temperature deposit prevention of engine oil.
- hot tube test increase the test temperature from 300 to 5 in steps to determine the temperature at which coking occurs, define the coke generation temperature as 1 and define it as the HTT heat-resistant temperature rate.
- the cleanliness rating of the test piece was calculated.
- HTT heat-resistant temperature 3 2 0 or more was judged acceptable.
- the composition containing the component (A) in the present invention exhibits excellent heat resistance in the hot tube test. On the contrary, when using a phenate detergent other than the component (A), the HTT heat resistance temperature and the score were inferior.
- the lubricating oil composition (Example 2 -—! ⁇ 2_7) and comparative lubricating oil composition (Comparative Example 3) in the present invention having the compositions shown in Table 2 were prepared.
- the resulting composition was evaluated for spreadability by a high-temperature fluidity test and high-temperature cleanliness by a hot tube test. Results-are shown in Table 2.
- the base oil used here is SAE 30 Group I base oil (sulfur content 0.03 mass% or more, saturation content less than 90 mass%, viscosity index 80 to 120) and bright stock. It is a combination. Adjust the composition so that the kinematic viscosity at 100 is 100 mm 2 Z s with the additive added, and add a metallic detergent so that the base number of the composition is 7 O mg KOH g. Added. Examples 1 to 7 are cases where the component (A) and the component (B1) are used in combination, and Comparative Example 3 is a case where the component (B) is used alone. In either case, calcium sulfonate was added as component (B).
- Polishing ⁇ Steel plate polished with # 400 is tilted and fixed at 10 degrees. A plate-shaped heater is installed under the plate so that the entire steel plate can be heated to 320. Add a drop of sample oil to the top of this steel and measure the rate at which this oil flows down the slope.
- Heat resistance test method The heat resistance was evaluated according to JPI-5S-55-99 (hot tube test) for evaluating the high temperature deposit prevention of engine oil. In the hot tube test, a score of 7.0 or higher after a test time of 16 hours at a test temperature of 3 20 or higher was determined to be acceptable. Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Examples Comparative Examples
- Base oil Base oil 3 (kinematic viscosity 33.3mm2 / s at 100) Quality ft% 60 60 60 60 60 60 60 60
- Component (C) Succinimide material 1.6%
- the composition containing the components (A) and (Bl) in the present invention was excellent in both the fluidity test and the hot tube test. On the contrary, in the case of only the component (B1), the fluidity was good, but the results of the hot tube test were bad.
Abstract
Description
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JP2009547153A JP5580051B2 (ja) | 2007-12-25 | 2008-12-25 | 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 |
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Cited By (6)
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WO2011077810A1 (ja) * | 2009-12-24 | 2011-06-30 | 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 |
JP2013501127A (ja) * | 2009-08-06 | 2013-01-10 | ザ ルブリゾル コーポレイション | アスファルテン分散剤含有潤滑組成物 |
WO2013046755A1 (ja) * | 2011-09-30 | 2013-04-04 | 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 |
CN103695114A (zh) * | 2013-12-14 | 2014-04-02 | 广西大学 | 薄钢板冲压成型的润滑剂 |
CN103695090A (zh) * | 2013-12-18 | 2014-04-02 | 广西大学 | 一种铝线精拉的润滑剂 |
JPWO2014057641A1 (ja) * | 2012-10-10 | 2016-08-25 | Jx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ステム潤滑油組成物 |
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WO2013046484A1 (ja) * | 2011-09-27 | 2013-04-04 | 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ステム油組成物 |
DK2767578T3 (en) | 2013-02-19 | 2016-05-09 | Lukoil Marine Lubricants Germany Gmbh | A method and apparatus for producing a cylinder oil |
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WO2011077810A1 (ja) * | 2009-12-24 | 2011-06-30 | 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 |
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JPWO2014057641A1 (ja) * | 2012-10-10 | 2016-08-25 | Jx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ステム潤滑油組成物 |
CN103695114A (zh) * | 2013-12-14 | 2014-04-02 | 广西大学 | 薄钢板冲压成型的润滑剂 |
CN103695090A (zh) * | 2013-12-18 | 2014-04-02 | 广西大学 | 一种铝线精拉的润滑剂 |
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