WO2021085480A1 - 潤滑油用添加剤およびこれを含有する潤滑油組成物 - Google Patents
潤滑油用添加剤およびこれを含有する潤滑油組成物 Download PDFInfo
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- WO2021085480A1 WO2021085480A1 PCT/JP2020/040459 JP2020040459W WO2021085480A1 WO 2021085480 A1 WO2021085480 A1 WO 2021085480A1 JP 2020040459 W JP2020040459 W JP 2020040459W WO 2021085480 A1 WO2021085480 A1 WO 2021085480A1
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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
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
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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
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
- C10M137/08—Ammonium or amine 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
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/08—Esters of oxyacids of phosphorus
- C07F9/141—Esters of phosphorous acids
- C07F9/1411—Esters of phosphorous acids with hydroxyalkyl compounds with further substituents on alkyl
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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
- 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
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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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
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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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
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- 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
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
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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
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
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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
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
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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
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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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/049—Phosphite
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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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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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
- C10N2030/24—Emulsion properties
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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
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
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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
- C10N2040/20—Metal working
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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
Definitions
- the present invention relates to an additive for a lubricating oil and a lubricating oil composition containing the additive. More specifically, an additive for a lubricating oil that can impart abrasion resistance and anti-emulsifying property to a base oil for a lubricating oil (hereinafter, also referred to as a base oil) and has excellent durability even in the presence of water. And a lubricating oil composition containing the same.
- Lubricating oil used for engine oil, hydraulic fluid, metalworking oil, etc. consists of base oil (base oil) and additives with various functions.
- Extreme pressure agents are used as lubricating oils such as metalworking oils used under particularly harsh conditions for the purpose of improving load bearing resistance and wear prevention properties. Examples of the extreme pressure agent include chlorine-based, sulfur-based, and phosphorus-based agents.
- chlorine-based extreme pressure agents are excellent in extreme pressure properties, they are avoided because they may cause irritation to the skin and deterioration of the working environment such as rust on metals. Chlorine-based extreme pressure agents tend to be avoided, especially in applications where mist is generated, such as metalworking oils. Sulfur-based compounds also have excellent load resistance, but many of them have a unique odor, so they tend to be avoided for lubrication, which may come into contact with the human body. Therefore, as a substitute for these chlorine-based and sulfur-based extreme pressure agents, phosphorus-based additives such as phosphoric acid ester (salt) -based agents are used.
- Patent Document 1 a compound such as a phosphoric acid ester having an alkyl chain or a polyoxyalkylene chain or an amine salt of a phosphite ester is disclosed (Patent Document 1).
- a compound such as a phosphoric acid ester having an alkyl chain or a polyoxyalkylene chain or an amine salt of a phosphite ester is disclosed (Patent Document 1).
- water may be mixed during use or storage, which may cause problems such as deterioration of oil film forming ability and promotion of oxidative deterioration. Therefore, the lubricating oil is required to have an anti-emulsifying property (water separability) that is difficult to emulsify even if water is mixed in during use and that easily separates water even if emulsified.
- Patent Document 2 discloses a lubricating oil composition in which a (sub) phosphoric acid ester and a polyoxyalkylene monoalkyl ether are combined and blended with a lubricating oil base oil for the purpose of improving antiemulsifying properties.
- a base oil for lubricating oil (hereinafter, also referred to as a base oil). It is an object of the present invention to provide an additive for a lubricating oil having excellent durability of anti-emulsifying property and abrasion resistance even in the presence of water, and a lubricating oil composition containing the same.
- the present inventors have added an additive in which the compounds represented by the formulas (1) and (2) are combined in a specific amount ratio in the base oil. By doing so, it was found that the above problems can be solved. That is, the present invention is the following [1] to [2].
- the phosphite ester compound A represented by the following formula (1) and the phosphite ester compound B represented by the formula (2) are composed of the phosphite ester compound A and the phosphite ester compound B.
- Phosphite ester compound A: Phosphite ester compound B of 99: 1 to 80:20 for lubricating oil.
- R 1 and R 2 are each independently a hydrocarbon group having 1 to 22 carbon atoms
- AO represents an oxyalkylene group having 2 to 4 carbon atoms
- n is the average number of moles of the oxyalkylene group added. Indicates 0 to 5.
- R 3 is a hydrocarbon group having 1 to 22 carbon atoms
- AO represents an oxyalkylene group having 2 to 4 carbon atoms
- n is the average number of moles of the oxyalkylene group added, and represents 0 to 5
- M Indicates organic ammonium.
- the present invention it is possible to impart wear resistance and anti-emulsifying property to the base oil for lubricating oil, and also to impart durability even in the presence of water.
- additive of the present invention a lubricating oil composition containing the additive for lubricating oil of the present invention
- additive of the present invention the additive of the present invention
- base oil for lubricating oil the base oil for lubricating oil
- the numerical range defined by using the symbol "-" in this specification shall include the numerical values at both ends (upper limit and lower limit) of "-". For example, "2 to 10" represents 2 or more and 10 or less.
- the additive of the present invention is composed of a phosphite ester compound A represented by the following formula (1) and a phosphite ester compound B represented by the formula (2), and the phosphite ester compound A and the phosphite ester compound B.
- Phosphite ester compound A: Phosphite ester compound B is an additive for lubricating oil having a mass ratio of 99: 1 to 80:20.
- the phosphite ester compound A is represented by the following formula.
- R 1 and R 2 independently represent a hydrocarbon group having 1 to 22 carbon atoms, and the hydrocarbon group may be saturated or unsaturated, and may be linear or unsaturated. It may be in any branched form. Further, R 1 and R 2 may be the same or different.
- R 2 the same group as R 1 described above can be exemplified.
- One of these compounds having a hydrocarbon group may be used alone, or two or more thereof may be mixed and used. When the number of carbon atoms is 23 or more, sufficient wear resistance may not be obtained.
- R 1 and R 2 are preferably linear or branched saturated hydrocarbon groups or unsaturated hydrocarbon groups having 4 to 18 carbon atoms, and more preferably branched having 8 to 18 carbon atoms.
- State Saturated hydrocarbon group or unsaturated hydrocarbon group For example, a 2-ethylhexyl group, an isodecyl group, and an oleyl group are preferable, and a 2-ethylhexyl group is particularly preferable.
- AO is an oxyalkylene group having 2 to 4 carbon atoms, and may be in either a linear form or a branched form.
- examples of the AO include an oxyethylene group, an oxypropylene group, an oxybutylene group, an oxytetramethylene group and the like. It is preferably an oxyalkylene group having 2 to 3 carbon atoms, and more preferably an oxyethylene group having 2 carbon atoms.
- A is an alkylene group having 2 to 4 carbon atoms
- O is an oxygen atom. Therefore, "AO” and “OA” in the formula (1) have the same meaning, and both mean the above-mentioned oxyalkylene group having 2 to 4 carbon atoms.
- n represents the average number of moles of the oxyalkylene group added, and n is 0 to 5. When n exceeds 5, the wear resistance and the anti-emulsifying property are deteriorated. From the viewpoint of abrasion resistance and anti-emulsifying property, n is preferably 2 or less, particularly preferably 1 or less, and particularly preferably 0. When n is 0, it means that the oxygen atom of "R 1 O" and the phosphorus atom in the formula (1) are directly bonded, and the oxygen atom of "R 2 O" and the phosphorus atom are directly bonded. To do.
- the method for producing the phosphorous acid ester compound A represented by the above formula (1) is not particularly limited, and examples thereof include a method in which a phosphorous acid and an alcohol are esterified at, for example, 80 to 180 ° C. ..
- the esterification reaction for producing the present ester compound it is preferable to use an alcohol having a molar ratio of 2 times or more with respect to the acid.
- the alcohol to be reacted with phosphite is an ether obtained by adding an alkylene oxide to an alcohol having a hydrocarbon group having 1 to 22 carbon atoms or an alcohol having a hydrocarbon group having 1 to 22 carbon atoms. It is a group-containing alcohol.
- the phosphite ester compound B is represented by the following formula.
- R 3 represents a hydrocarbon group having 1 to 22 carbon atoms, and the hydrocarbon group may be saturated or unsaturated, and may be in either a linear form or a branched form. There may be.
- the R 3 for example, a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, heptyl group, octyl group, lauryl group, myristyl group, palmityl group, stearyl group, linear saturated hydrocarbons such as behenyl group Group, isopropyl group, isobutyl group, t-butyl group, isopentyl group, isooctyl group, 2-ethylhexyl group, isononyl group, 3,5,5-trimethylhexyl group, isodecyl group, isostearyl group, 2-octyldecyl group, Sufficient resistance when the number of carbon atoms is 23 or more, including branched saturated hydrocarbon groups such as 2-octyldodecyl group and 2-hexyldecyl group, and unsaturated hydrocarbon groups such as palmito
- R 3 is preferably a linear or branched saturated hydrocarbon group having 4 to 18 carbon atoms or an unsaturated hydrocarbon group, and more preferably branched saturated hydrocarbon group having 8 to 18 carbon atoms. It is a hydrogen group or an unsaturated hydrocarbon group.
- a 2-ethylhexyl group, an isodecyl group, and an oleyl group are preferable, and a 2-ethylhexyl group is particularly preferable.
- AO is an oxyalkylene group having 2 to 4 carbon atoms, and may be in either a linear form or a branched form.
- examples of the AO include an oxyethylene group, an oxypropylene group, an oxybutylene group, an oxytetramethylene group and the like. It is preferably an oxyalkylene group having 2 to 3 carbon atoms, and more preferably an oxyethylene group having 2 carbon atoms.
- n represents the average number of moles of the oxyalkylene group added, and n is 0 to 5. When n exceeds 5, the wear resistance and the anti-emulsifying property are deteriorated. From the viewpoint of abrasion resistance and anti-emulsifying property, n is preferably 2 or less, particularly preferably 1 or less, and particularly preferably 0. When n is 0, it means that the oxygen atom and the phosphorus atom of "R 3 O" in the formula (2) are directly bonded.
- M represents organic ammonium.
- M is an organic ammonium in which a saturated or unsaturated hydrocarbon group having 1 to 24 carbon atoms is bonded to a nitrogen atom, and the hydrocarbon group may be in either a linear form or a branched form.
- at least one hydrocarbon group is preferably a hydrocarbon group having 12 to 24 carbon atoms, and more preferably a hydrocarbon group having 18 to 24 carbon atoms. ..
- one hydrocarbon group preferably has 12 to 24 carbon atoms, and more preferably 18 to 24 carbon atoms.
- the hydrocarbon groups may be the same as each other, or at least one hydrocarbon group may be different.
- organic ammonium examples include octylammonium, laurylammonium, oleylammonium, stearylammonium, dioctylammonium, triethylamine, trioctylamine, dimethyllaurylamine, dimethylstearylamine and the like. From the viewpoint of anti-emulsifying property and sustainability, lauryl ammonium, oleyl ammonium, dimethyl lauryl ammonium and trioctyl ammonium having a total carbon number of 12 or more are preferable, and oleyl ammonium having a total carbon number of 18 or more is more preferable.
- the method for producing the phosphorous acid ester compound B represented by the formula (2) is not particularly limited, and for example, the first step of producing the phosphorous acid monoester and the phosphorous acid obtained in the first step.
- the phosphorous acid monoesteramine salt represented by the formula (2) can be produced from the second step of neutralizing the monoester with the amine compound.
- the first step will be described.
- a method of esterifying an alcohol having a hydrocarbon group having 1 to 22 carbon atoms, or an ether group-containing alcohol obtained by adding an alkylene oxide to the alcohol and phosphorous acid, for example, at 80 to 180 ° C. Can be mentioned.
- the second step will be described. It can be produced by subjecting the phosphorous acid monoester produced by the above production method and an amine compound to a neutralization reaction at, for example, 20 to 60 ° C.
- the phosphorous acid monoester: amine compound is preferably in the range of 60:40 to 40:60 in molar ratio, more preferably in the range of 55:45 to 45:55, and further. It is preferably in the range of 52:48 to 48:52.
- the mass ratio of the above-mentioned phosphite ester compound A to the phosphite ester compound B (phosphorite ester compound A: phosphite ester compound B) in the additive for lubricating oil of the present invention is 99: 1 to 99: 1. It is 80:20. If the content of the phosphite ester compound A in the additive for lubricating oil exceeds 99% by mass, the durability of wear resistance and wear resistance deteriorates, and if it is less than 80% by mass, the anti-emulsifying property and anti-emulsifying property The durability of the ester and the durability of the wear resistance are deteriorated.
- the mass ratio of the phosphite ester compound A to the phosphite ester compound B (phosphorite ester compound A: phosphite ester compound B) is preferably 99: 1 to 90:10.
- the load bearing capacity is synergistically improved by the combined use of the above-mentioned additive for lubricating oil and sulfur-based extreme pressure agent of the present invention, that is, the additive composition composed of the additive for lubricating oil and sulfur-based extreme pressure agent.
- the sulfur-based extreme pressure agent include sulfide fatty acids, sulfide fats and oils, and polysulfide, and one type can be used alone or two or more types can be used in combination.
- the sulfide fatty acid refers to a sulfide of a fatty acid, and examples of commercially available sulfide fatty acids include DAILUBE GS-550 (manufactured by DIC) and Additin RC2715 (manufactured by Rheinchemy). Sulfated fats and oils are also called sulfide esters, and refer to fatty acid glycerin esters and sulfides of fatty acid esters.
- sulfide oils and fats or sulfide esters include, for example, DAIRUBE GS-110, DAIRUBE GS-240, DAIRUBE GS-215, DAIRUBE GS-225, DAIRUBE GS-245 (all manufactured by DIC), Additin RC2310, and Additin RC2415. (Made by Line Chemie) and the like.
- Polysulfide is a general formula R-Sn-R'(in the formula, R and R'may be the same or different from each other, and represents a hydrocarbon group such as a linear or branched alkyl group.
- N is a number of 2 or more.
- Examples of commercially available polysulfides include DAILUBE IS-30, DAIRUBE IS-35, DAIRUBE GS-420 (manufactured by DIC), Additin RC2540, and Additin RC2541 (manufactured by Line Chemie). From the viewpoint of the synergistic effect of load bearing capacity, sulfide fats and oils and polysulfide are preferable.
- the mixing ratio of the phosphite ester compounds A and B and the sulfur-based extreme pressure agent in the additive composition is based on 100 parts by mass of the total content of the phosphite ester compound A and the phosphite ester compound B.
- the content of the sulfur-based extreme pressure agent is 1 to 1,000 parts by mass, preferably 10 to 500 parts by mass.
- the lubricating oil composition of the present invention contains the additive of the present invention and the base oil for lubricating oil.
- the base oil for lubricating oil in the present invention various base oils for lubricating oil can be used.
- conventionally used base oils for lubricating oils such as mineral oils, highly refined mineral oils, animal and vegetable fats and oils, synthetic esters, poly ⁇ -olefins, and GTL (gas two liquid) oils can be mentioned.
- the content of the additive of the present invention in the lubricating oil composition of the present invention is 0.01 to 30% by mass, preferably 0.05 to 20% by mass, and more preferably 0.1 to 10% by mass. is there.
- the content of the additive of the present invention is too small, sufficient wear resistance may not be obtained. Further, if the content of the additive of the present invention is too large, wear resistance, anti-emulsifying property and durability commensurate with the added amount may not be obtained.
- the lubricating oil composition of the present invention may contain an additive composition and a base oil for lubricating oil.
- the additive composition is a composition composed of an additive for lubricating oil and a sulfur-based extreme pressure agent as described above.
- the content of the additive composition in the lubricating oil composition is 0.02 to 60% by mass, preferably 0.1 to 40% by mass, and more preferably 0.2 to 20% by mass.
- the content of the additive composition is at least these lower limit values, the anti-emulsifying property, the load-bearing property, and the sustainability thereof can be improved.
- the content of the additive composition is not more than these upper limit values, it becomes easy to obtain the anti-emulsifying property, the load bearing property, and the sustainability thereof corresponding to the added amount.
- the content of the base oil for lubricating oil in the lubricating oil composition of the present invention is 70 to 99.99% by mass, preferably 80 to 99.95% by mass, and more preferably 90 to 99.9% by mass. Is.
- the lubricating oil composition of the present invention also contains other additives such as a cleaning dispersant, a viscosity index improver, a rust preventive, a corrosion inhibitor, a pour point lowering agent, and a metal inactivating agent, if necessary. Can be done.
- the reaction was carried out under the same conditions until the internal pressure became constant. Then, the reaction product was taken out from the pressure-resistant container and neutralized with hydrochloric acid to adjust the pH to 6 to 7, and in order to remove the contained water, it was subjected to a reduced pressure treatment at 100 ° C. for 1 hour, and finally the salt was removed by filtration. 1,250 g of ether group-containing alcohol was obtained. The obtained ether group-containing alcohol had a hydroxyl value of 255, and the molecular weight determined from the hydroxyl value was 220.
- the wear resistance was evaluated by an SRV tester (manufactured by OPTIMOL, Schwingungs Reihungund Verschleiss tester type 4). The SRV test was performed with a ball / disc, and each test piece was made of SUJ-2. The test conditions were a test temperature of 120 ° C., a load of 100 N, an amplitude of 1 mm, and a frequency of 50 Hz, and the wear mark diameter was measured after the test time of 25 minutes had elapsed. The evaluation was as follows: ⁇ : less than 350 ⁇ m, ⁇ : 350 ⁇ m or more to less than 400 ⁇ m, ⁇ : 400 ⁇ m or more.
- the anti-emulsifying property was evaluated in accordance with JIS K 2520.
- the oil and water separation time was evaluated as follows. The evaluation was as follows: ⁇ : Separation time was less than 5 minutes, ⁇ : Separation time was 5 minutes or more.
- 100 ml of the lubricating oil composition and 0.1 ml of water were placed in a 100 mL glass bottle, sealed in an air atmosphere, and allowed to stand in a constant temperature bath at 40 ° C. for 7 days to evaluate the anti-emulsifying property of the lubricating oil composition. was measured under the same conditions.
- the additives 1 to 3 according to the present invention can impart wear resistance and anti-emulsifying property to the base oil for lubricating oil, and can be maintained even in the presence of water. It turns out that it is excellent in sex.
- the abrasion resistance and the anti-emulsifying property immediately after preparation were good, but the sustainability was inferior.
- Additives 5 and 6 outside the range of formulas (1) and (2) were inferior in abrasion resistance and anti-emulsifying property immediately after preparation.
- the additive 7 in which n is out of the range the abrasion resistance and the anti-emulsifying property immediately after preparation were inferior, and the sustainability was also inferior.
- the seizure load was evaluated with a shell 4-ball tester.
- the test piece used was made by SUJ-2.
- the test conditions were as follows: test temperature 25 ° C., rotation speed 1,800 rpm, test time 10 seconds, load 50 kg, 63 kg, 80 kg, 100 kg, 126 kg, 160 kg, 200 kg in this order.
- the evaluation was ⁇ : 160 kg or more, ⁇ : 126 kg or more and less than 160 kg, ⁇ : less than 126 kg.
- the anti-emulsifying property was evaluated in accordance with JIS K 2520.
- the oil and water separation time was evaluated as follows. The evaluation was as follows: ⁇ : Separation time was less than 5 minutes, ⁇ : Separation time was 5 minutes or more.
- 100 ml of the lubricating oil composition and 0.1 ml of water were placed in a 100 mL glass bottle, sealed in an air atmosphere, and allowed to stand in a constant temperature bath at 40 ° C. for 7 days to evaluate the anti-emulsifying property of the lubricating oil composition. was measured under the same conditions.
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Abstract
Description
一方、潤滑油においては、使用中又は保管中に水が混入し、油膜の形成能の低下や、酸化劣化が促進するといった不具合が起きる恐れがある。そのため、潤滑油には、使用時に水が混入しても乳化し難く、また乳化しても水分を分離しやすい抗乳化性(水分離性)が求められる。例えば特許文献2には、抗乳化性の改善を目的として(亜)リン酸エステルとポリオキシアルキレンモノアルキルエーテルとを組合せて、潤滑油基油に配合した潤滑油組成物が開示されている。
さらに、抗乳化性の持続性が良好であっても、水の混入によって金属表面への吸着挙動などに経時的な変化を生じたりする等の要因によって、水が混入した潤滑油においては経時的に耐摩耗性が低下する場合があった。潤滑油には長寿命化が望まれていることから、水が混入した場合であっても、長時間にわたって耐摩耗性を発揮する添加剤の開発が望まれていた。
上記の通り、本発明の目的は、上記課題を解決することであり、詳しくは、潤滑油用基油(以下、基油とも言う)に対して耐摩耗性、抗乳化性を付与できるとともに、水存在下であっても抗乳化性および耐摩耗性の持続性に優れた潤滑油用添加剤およびこれを含有する潤滑油組成物を提供することである。
すなわち、本発明は下記の〔1〕~〔2〕である。
(式(1)において、
R1およびR2はそれぞれ独立して炭素数1~22の炭化水素基であり、AOは炭素数2~4のオキシアルキレン基を示し、nはオキシアルキレン基の平均付加モル数であって、0~5を示す。)
(式(2)において、
R3は炭素数1~22の炭化水素基であり、AOは炭素数2~4のオキシアルキレン基を示し、nはオキシアルキレン基の平均付加モル数であって、0~5を示し、Mは有機アンモニウムを示す。)
〔2〕上記〔1〕記載の潤滑油用添加剤を0.01~30質量%含有する潤滑油組成物。
なお、本明細書において記号「~」を用いて規定された数値範囲は「~」の両端(上限および下限)の数値を含むものとする。例えば「2~10」は2以上10以下を表す。
〔潤滑油用添加剤〕
本発明添加剤は下記の式(1)で示される亜リン酸エステル化合物Aおよび式(2)で示される亜リン酸エステル化合物Bからなり、亜リン酸エステル化合物Aと亜リン酸エステル化合物Bの質量比(亜リン酸エステル化合物A:亜リン酸エステル化合物B)が99:1~80:20である潤滑油用添加剤である。
亜リン酸エステル化合物Aは、下記の式で示される。
式(1)中、R1およびR2はそれぞれ独立して炭素数1~22の炭化水素基を示し、前記炭化水素基は飽和であっても不飽和であってもよく、直鎖状及び分岐状のいずれの形態であっても良い。またR1とR2は同一であってもよく、また異なっていてもよい。
なお、式(1)中の「AO」におけるAは炭素数2~4のアルキレン基、Oは酸素原子である。そのため、式(1)中の「AO」及び「OA」は同義であり、共に上記した炭素数2~4のオキシアルキレン基を意味する。
なお、nが0の場合は、式(1)における「R1O」の酸素原子とリン原子とが直接結合し、「R2O」の酸素原子とリン原子とが直接結合することを意味する。
亜リン酸エステル化合物Bは、下記の式で示される。
式(2)中、R3は炭素数1~22の炭化水素基を示し、前記炭化水素基は飽和であっても不飽和であってもよく、直鎖状及び分岐状のいずれの形態であっても良い。R3としては、例えば、メチル基、エチル基、プロピル基、ブチル基、ヘキシル基、ヘプチル基、オクチル基、ラウリル基、ミリスチル基、パルミチル基、ステアリル基、ベヘニル基などの直鎖状飽和炭化水素基、イソプロピル基、イソブチル基、t-ブチル基、イソペンチル基、イソオクチル基、2-エチルヘキシル基、イソノニル基、3,5,5-トリメチルヘキシル基、イソデシル基、イソステアリル基、2-オクチルデシル基、2-オクチルドデシル基、2-ヘキシルデシル基などの分岐状飽和炭化水素基、パルミトイル基、オレイル基、リノレイル基などの不飽和炭化水素基などが挙げられる炭素数が23以上の場合、十分な耐摩耗性が得られないことがある。
なお、nが0の場合は、式(2)における「R3O」の酸素原子とリン原子とが直接結合することを意味する。
また炭化水素基は互いに同一であっても良く、または少なくとも1つの炭化水素基が異なっていても良い。有機アンモニウムとしては、例えば、オクチルアンモニウム、ラウリルアンモニウム、オレイルアンモニウム、ステアリルアンモニウム、ジオクチルアンモニウム、トリエチルアミン、トリオクチルアミン、ジメチルラウリルアミン、ジメチルステアリルアミンなどが挙げられる。抗乳化性や持続性の観点から好ましくは総炭素数が12以上のラウリルアンモニウム、オレイルアンモニウム、ジメチルラウリルアンモニウム、トリオクチルアンモニウムであり、より好ましくは総炭素数が18以上のオレイルアンモニウムである。
式(2)で示される亜リン酸エステル化合物Bの製造法としては特に限定されず、例えば、亜リン酸モノエステルを製造する第一の工程と、第一の工程で得られた亜リン酸モノエステルをアミン化合物により中和させる第二の工程とから式(2)で示される亜リン酸モノエステルアミン塩を製造することができる。
炭素数が1~22の炭化水素基を有するアルコール、または前記アルコールにアルキレンオキサイドを付加させることによって得られるエーテル基含有アルコールと亜リン酸とを、例えば80~180℃でエステル化反応を行う方法が挙げられる。
上記製造法で製造した亜リン酸モノエステルとアミン化合物とを、例えば20~60℃で中和反応を行うことで製造することができる。経時安定性の観点から、亜リン酸モノエステル:アミン化合物がモル比で60:40~40:60の範囲であることが好ましく、より好ましくは55:45~45:55の範囲であり、さらに好ましくは52:48~48:52の範囲である。
亜リン酸エステル化合物Aと、亜リン酸エステル化合物Bとの質量比(亜リン酸エステル化合物A:亜リン酸エステル化合物B)は、好ましくは99:1~90:10である。
硫化脂肪酸は、脂肪酸の硫化物のことをいい、商業的に入手出来る硫化脂肪酸としては、例えば、DAILUBE GS-550(DIC製)、Additin RC2715(ラインケミ―製)等が挙げられる。
硫化油脂は硫化エステルともいい、脂肪酸グリセリンエステルおよび脂肪酸エステルの硫化物をいう。商業的に入手できる硫化油脂ないし硫化エステルとしては、例えばDAILUBE GS-110、DAILUBE GS-240、DAILUBE GS-215、DAILUBE GS-225、DAILUBE GS-245(以上DIC製)、Additin RC2310、Additin RC2415(以上ラインケミ―製)等が挙げられる。
ポリサルファイドは、一般式R-Sn-R’(式中、RおよびR’は互いに同一でも異なっていてもよく、直鎖又は分岐アルキル基等の炭化水素基を表わす。nは2以上の数である)で表される化合物のことをいう。商業的に入手できるポリサルファイドとしては、例えばDAILUBE IS-30、DAILUBE IS-35、DAILUBE GS-420(以上DIC製)、Additin RC2540、Additin RC2541(以上ラインケミ―製)等が挙げられる。
耐荷重性の相乗効果の観点から、硫化油脂、ポリサルファイドが好ましい。
添加剤組成物における、亜リン酸エステル化合物AおよびBと、硫黄系極圧剤との混合比は、亜リン酸エステル化合物Aと亜リン酸エステル化合物Bの総含有量100質量部に対して、硫黄系極圧剤の含有量が1~1,000質量部であり、好ましくは10~500質量部である。
本発明の潤滑油組成物は本発明添加剤および潤滑油用基油を含有する。
本発明において潤滑油用基油としては、種々の潤滑油用基油を使用することができる。例えば、鉱物油、高度精製鉱物油、動植物油脂、合成エステル、ポリαオレフィン、GTL(ガスツーリキッド)油などの従来から使用される潤滑油用基油が挙げられる。
本発明の潤滑油組成物における本発明添加剤の含有量は、0.01~30質量%であり、好ましくは0.05~20質量%であり、より好ましくは0.1~10質量%である。本発明添加剤の含有量が少なすぎる場合は、十分な耐摩耗性が得られないことがある。また本発明添加剤の含有量が多すぎる場合は、添加量に見合った耐摩耗性、抗乳化性および持続性が得られないことがある。
潤滑油組成物における添加剤組成物の含有量は、0.02~60質量%であり、好ましくは0.1~40質量%であり、より好ましくは0.2~20質量%である。添加剤組成物の含有量がこれら下限値以上であると、抗乳化性、耐荷重性、およびこれらの持続性を良好にすることができる。添加剤組成物の含有量がこれら上限値以下であると、添加量に見合った抗乳化性、耐荷重性、およびこれらの持続性を得やすくなる。
1Lの4つ口フラスコに温度計および窒素導入管を差し込み、2-エチルヘキサノール533g(4.1mol)と亜リン酸164g(2mol)を仕込み、120℃、200Torr以下の減圧下で反応を行った。1時間あたりの酸価の下がり幅が0.5mgKOH/g以下となった時点で反応を終了した。反応終了後、未反応の原料を150℃、30Torr以下の減圧下で留去し、式(1)の化合物を得た。
〔合成例1’、式(1)の化合物1-B〕
合成例1における2-エチルヘキサノールをイソデカノールに適宜変更し、合成例1に準じて、表1に示す式(1)の化合物1-Bを合成した。
撹拌機、圧力計、温度計、安全弁、ガス吹き込み管、排気管、冷却用コイル、および蒸気ジャケットを装備したステンレス製の5リットル容の耐圧容器に、2-エチルヘキサノール780g(6mol)および水酸化カリウム1.3gを仕込み、窒素置換後、攪拌しながら120℃に昇温した。攪拌下、120℃、0.05~0.50MPa(ゲージ圧)の条件で、別に用意した耐圧容器からエチレンオキサイド530g(12mol)を、ガス吹き込み管を通して、窒素ガスにより加圧しながら添加した。添加終了後、同条件で内圧が一定となるまで反応させた。その後、耐圧容器から反応物を取り出し、塩酸で中和してpH6~7とし、含有する水分を除去するため、100℃、1時間、減圧処理を行い、最後に濾過により塩を除去して、1,250gのエーテル基含有アルコールを得た。得られたエーテル基含有アルコールの水酸基価は255であり、水酸基価から求められる分子量は220であった。
次に攪拌装置、温度計および窒素導入間を装備したガラス製の1リットル容の反応容器に、上記で得られたエーテル基含有アルコール462g(2.1mol)と亜リン酸82g(1mol)を仕込み、120℃、200Torr以下の減圧下で反応を行った。1時間あたりの酸価の下がり幅が0.5mgKOH/g以下となった時点で反応を終了した。反応終了後、未反応の原料を200℃、30Torr以下の減圧下で留去し、化合物1-Cを得た。
合成例2における2-エチルヘキサノールをブタノールに変更し、合成例2に準じて操作を行うことにより、化合物1-Dを得た。
1Lの4つ口フラスコに温度計および窒素導入管を差し込み、2-エチルヘキサノール260g(2mol)と亜リン酸180g(2.2mol)を仕込み、120℃、200Torr以下の減圧下で反応を行った。1時間あたりの酸価の下がり幅が0.5mgKOH/g以下となった時点で反応を終了した。その後、反応液に対して20質量%に相当する量のイオン交換水を加えて60℃で10分攪拌して、10分静置し、分離した水層を除去した。その後、100℃、30Torrで1時間攪拌することで脱水した。脱水後、オレイルアミン535g(2mol)を加えて、25℃で0.5時間攪拌混合し、式(2)の化合物2-Aを得た。
合成例4における2-エチルヘキサノール、オレイルアミンを他の化合物に適宜変更し、合成例4に準じて、表2に示す式(2)の化合物2-B、および2-Dを合成した。
攪拌装置、温度計および窒素導入間を装備したガラス製の1リットル容の反応容器に、合成例2で得られたエーテル基含有アルコール440g(2mol)と亜リン酸180g(2.2mol)を仕込み、120℃、200Torr以下の減圧下で反応を行った。1時間あたりの酸価の下がり幅が0.5mgKOH/g以下となった時点で反応を終了した。その後、反応液に対して20質量%に相当する量のイオン交換水を加えて60℃で10分攪拌して、10分静置し、分離した水層を除去した。その後、100℃、30Torrで1時間攪拌することで脱水した。脱水後、オレイルアミン535g(2mol)を加えて、25℃で0.5時間攪拌混合し、化合物2-Cを得た。
合成例2における2-エチルヘキサノールをブタノールに変更し、合成例2および合成例5に準じて操作を行うことにより、化合物2-Eを得た。
1Lの4つ口フラスコに、温度計および窒素導入管を差し込み、合成例1にて合成した化合物1-A 500gと、合成例4にて合成した化合物2-A 10gとを25℃で0.5時間攪拌配合し、添加剤1を得た。
配合例1における式(1)の化合物と式(2)の化合物との配合比を適宜変更し、配合例1に準じて操作を行うことにより、表3に示す添加剤2~7を得た。
潤滑油用基油(ポリα オレフィン、動粘度(40℃):約50mm2/s)に対して、上記の添加剤1~7を0.5質量%配合し、実施例(1-1)~(1-3)および比較例(1-1)~(1-4)の潤滑油組成物を得た。得られた潤滑油組成物(試験油)について、下記の評価試験を行なった。評価結果を下記表4に示す。
SRV試験機(OPTIMOL 社製、Schwingungs Reihungundund Verschleiss試験機4型)にて耐摩耗性を評価した。SRV試験はボール/ディスクで行い、試験片はそれぞれSUJ-2製を用いた。試験条件は試験温度120℃、荷重100N、振幅1mm、振動数50Hzであり、試験時間25min経過後の摩耗痕径を測定した。
評価は、◎:350μm未満、○:350μm以上から400μm未満、×:400μm以上とした。
また100mL容ガラス瓶に、潤滑油組成物を100mlおよび水0.1mlを入れ、空気雰囲気下で密閉し、40℃の恒温槽にて7日間静置後の潤滑油組成物の耐摩耗性を同一の条件で測定した。
抗乳化性の評価を、JIS K 2520に準拠して行った。油と水の分離時間にて次の通り評価した。評価は〇:分離時間が5分未満、×:分離時間が5分以上、とした。
また100mL容ガラス瓶に、潤滑油組成物を100mlおよび水0.1mlを入れ、空気雰囲気下で密閉し、40℃の恒温槽にて7日間静置後の潤滑油組成物の抗乳化性の評価を同一の条件で測定した。
一方、Mが範囲外である添加剤4では、調製直後の耐摩耗性や抗乳化性は良好であったが、持続性が劣っていた。式(1)と式(2)の範囲外である添加剤5や6では、調製直後の耐摩耗性や、抗乳化性が劣っていた。またnが範囲外である添加剤7では、調製直後の耐摩耗性や抗乳化性が劣っており、持続性も劣っていた。
硫黄系極圧剤として、DIC社のDAILUBE GS-240およびDAILUBE IS-30を使用した。化合物C-1がDAILUBE GS-240であり、化合物C-2がDAILUBE IS-30である。
300mL~1Lの4つ口フラスコに、温度計および窒素導入管を差し込み、表5に記載の各添加剤を25℃で1時間攪拌混合して、添加剤組成物1~6を得た。
潤滑油用基油(鉱物油、動粘度(40℃):約20mm2/s)に対して表5の添加剤組成物1~6を10質量%配合し、実施例(2-1)~(2-4)および比較例(2-1)~(2-2)の潤滑油組成物を得た。得られた潤滑油組成物(試験油)について、下記の評価試験を行った。評価結果を下記表6に示す。
シェル4球試験機にて焼付荷重を評価した。試験片はSUJ-2製を用いた。試験条件は試験温度25℃、回転数1,800rpm、試験時間10秒、荷重50kg、63kg、80kg、100kg、126kg、160kg、200kgの順に荷重をかけて実施した。試験中に摩擦トルクの急増、異常音の発生などの現象が起き、摩耗面に焼付条痕が生成した荷重をもって焼付荷重とした。
評価は◎:160kg以上、〇:126kg以上かつ160kg未満、×:126kg未満とした。
また100mL容ガラス瓶に、潤滑油組成物を100mlおよび水0.1mlを入れ、空気雰囲気下で密閉し、40℃の恒温槽にて7日間静置後の潤滑油組成物の耐荷重性を同一の条件で測定した。
抗乳化性の評価を、JIS K 2520に準拠して行った。油と水の分離時間にて次の通り評価した。評価は〇:分離時間が5分未満、×:分離時間が5分以上、とした。
また100mL容ガラス瓶に、潤滑油組成物を100mlおよび水0.1mlを入れ、空気雰囲気下で密閉し、40℃の恒温槽にて7日間静置後の潤滑油組成物の抗乳化性の評価を同一の条件で測定した。
一方、Mが範囲外である添加剤組成物5を用いた比較例(2-1)では、初期の耐荷重性や抗乳化性は優れていたが、持続性に劣っていた。また硫黄系極圧剤のみからなる添加剤組成物6を用いた比較例(2-2)では、十分な耐荷重性が得られなかった。
Claims (2)
- 下記の式(1)で示される亜リン酸エステル化合物Aと、式(2)で示される亜リン酸エステル化合物Bとからなり、亜リン酸エステル化合物Aと亜リン酸エステル化合物Bの質量比(亜リン酸エステル化合物A:亜リン酸エステル化合物B)が99:1~80:20である潤滑油用添加剤。
(式(1)において、
R1およびR2はそれぞれ独立して炭素数1~22の炭化水素基であり、AOは炭素数2~4のオキシアルキレン基を示し、nはオキシアルキレン基の平均付加モル数であって、0~5を示す。)
(式(2)において、
R3は炭素数1~22の炭化水素基であり、AOは炭素数2~4のオキシアルキレン基を示し、nはオキシアルキレン基の平均付加モル数であって、0~5を示し、Mは有機アンモニウムを示す。) - 請求項1記載の潤滑油用添加剤を0.01~30質量%含有する潤滑油組成物。
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| US17/764,900 US12098343B2 (en) | 2019-10-30 | 2020-10-28 | Lubricant additive and lubricant composition comprising same |
| CN202080068954.XA CN114502703B (zh) | 2019-10-30 | 2020-10-28 | 润滑油用添加剂和含有其的润滑油组合物 |
| JP2021553655A JP7613365B2 (ja) | 2019-10-30 | 2020-10-28 | 潤滑油用添加剤およびこれを含有する潤滑油組成物 |
| EP20882163.7A EP4053253B1 (en) | 2019-10-30 | 2020-10-28 | Lubricant additive and lubricant composition comprising same |
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| US12098343B2 (en) | 2024-09-24 |
| EP4053253A4 (en) | 2023-11-22 |
| EP4053253B1 (en) | 2025-07-02 |
| CN114502703A (zh) | 2022-05-13 |
| JPWO2021085480A1 (ja) | 2021-05-06 |
| JP7613365B2 (ja) | 2025-01-15 |
| EP4053253A1 (en) | 2022-09-07 |
| CN114502703B (zh) | 2023-01-10 |
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