WO2016129148A1 - 潤滑剤組成物及びその利用、並びに脂肪族エーテル化合物 - Google Patents
潤滑剤組成物及びその利用、並びに脂肪族エーテル化合物 Download PDFInfo
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M133/12—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to a carbon atom of a six-membered aromatic ring
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- C07C43/00—Ethers; Compounds having groups, groups or groups
- C07C43/02—Ethers
- C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
- C07C43/04—Saturated ethers
- C07C43/10—Saturated ethers of polyhydroxy compounds
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- C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
- C07C43/04—Saturated ethers
- C07C43/10—Saturated ethers of polyhydroxy compounds
- C07C43/11—Polyethers containing —O—(C—C—O—)n units with ≤ 2 n≤ 10
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/18—Ethers, e.g. epoxides
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
- C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
- C10M107/34—Polyoxyalkylenes
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- 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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- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
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- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/109—Lubricant compositions or properties, e.g. viscosity
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- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/0406—Ethers; Acetals; Ortho-esters; Ortho-carbonates used as base material
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/127—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
- C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids used as base material
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
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- C10M2207/283—Esters of polyhydroxy compounds
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
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- 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
- C10M2215/065—Phenyl-Naphthyl amines
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
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- 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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- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/04—Molecular weight; Molecular weight distribution
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- 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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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/74—Noack Volatility
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
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- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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- F16C2370/00—Apparatus relating to physics, e.g. instruments
- F16C2370/12—Hard disk drives or the like
Definitions
- the present invention relates to a lubricant composition and use thereof, and an aliphatic ether compound, and in particular, a lubricant having high moisture resistance and physical properties such as low viscosity, low evaporation, low temperature fluidity, and high viscosity index.
- the present invention relates to a composition, its use, and an aliphatic ether compound suitably used in such a lubricant composition.
- Ester base oils are known as lubricating base oils with low viscosity and low evaporation.
- ester base oils have a problem of poor moisture resistance. That is, when the ester base oil is used for a long period of time, it is hydrolyzed by moisture in the air to generate an acid, which causes the generated acid to corrode the metal.
- ester base oil since ester base oil has high polarity, there exists a problem of having an adverse effect on organic materials such as rubber and plastic.
- fluid bearings have been developed and put to practical use in rotating devices that drive optical disks and optical disks such as FD, MO, minidisks, compact disks, DVDs, and hard disks used in these electronic devices.
- a fluid bearing composed of a sleeve and a rotating shaft that are opposed to each other through a lubricating oil does not have a ball bearing, so that it is suitable for reduction in size and weight, and is excellent in quietness and economy.
- Lubricating oils used in such hydrodynamic bearings have low viscosity even in the low temperature range, good low temperature fluidity, low viscosity reduction even in the high temperature range, and low evaporation properties. Is required.
- Patent Document 1 discloses the thermal / oxidative stability and anti-sludge property of the lubricant.
- Patent Document 2 discloses a lubricating oil composition suitable as a watch lubricating oil that can operate from ⁇ 30 ° C. to 80 ° C., does not deteriorate over a long period of time, and can maintain a long battery life.
- a clock lubricating oil containing an ether oil as a base oil, an antiwear agent and an antioxidant is disclosed.
- JP 2010-150562 A (published July 8, 2010)”
- WO2001 / 059043 (published August 16, 2001)
- conventional lubricating oil compositions are not sufficient in that they have high moisture resistance and physical properties such as low viscosity, low evaporation, low temperature fluidity, and high viscosity index.
- the present invention has been made in view of the above-mentioned problems, and the object thereof is lubrication having high moisture resistance and physical properties such as low viscosity, low evaporation, low temperature fluidity, and high viscosity index. It is an object to provide an aliphatic ether compound suitably used for a lubricant composition and its utilization technique, and such a lubricant composition.
- the lubricant composition according to the present invention is a lubricant composition comprising an aliphatic ether compound as a base oil and containing an antioxidant, wherein the antioxidant contains at least an alkyl.
- the total amount of the alkylated phenylnaphthylamine and the phosphite is 3 to 8% by weight based on the total amount of the base oil.
- the content ratio of the alkylated phenylnaphthylamine and the phosphite is 85 to 95% by weight of the alkylated phenylnaphthylamine with respect to the total amount of the alkylated phenylnaphthylamine and the phosphite. It is characterized by 5 to 15% by weight of phosphite.
- the aliphatic ether compound is an aliphatic ether compound having 8 to 300 carbon atoms in one molecule and 1 to 150 oxygen atoms in one molecule. It is preferable.
- the aliphatic ether compound is preferably a 2- (2-ethylhexyloxy) ethyl ether compound.
- the aliphatic ether compound is preferably at least one selected from the group consisting of compounds having structures represented by the following chemical formulas (1) to (10).
- the alkylated phenylnaphthylamine is preferably N-phenyl-dodecylnaphthalen-1-amine or N-phenyl-octylnaphthalen-1-amine.
- the phosphite is preferably 1,1,3-tris (2-methyl-4-ditridecyl phosphite-5-t-butylphenyl) butane.
- the bearing oil according to the present invention preferably uses the lubricant composition.
- the bearing according to the present invention is preferably lubricated using the lubricant composition.
- the bearing is preferably a fluid bearing or an impregnated bearing.
- the motor according to the present invention preferably includes the bearing.
- the bearing lubrication method according to the present invention is preferably lubricated using a lubricant composition.
- the use of the lubricant composition according to the present invention is preferably used for producing grease.
- the grease according to the present invention preferably contains the lubricant composition.
- the refrigerating machine oil according to the present invention preferably contains a lubricant composition.
- the aliphatic ether compound according to the present invention preferably has a structure represented by any of the following chemical formulas (1) to (9).
- a lubricant composition having high moisture resistance and physical properties such as low viscosity, low evaporation, low temperature fluidity, and high viscosity index can be realized.
- FIG. 6 is a graph showing the results of measuring the evaporation loss of the lubricant compositions prepared in Reference Example 1-3 and Comparative Example 1-5 of the present invention. It is a figure which shows the result of having measured the evaporation loss of the lubricant composition prepared in Example 1-2 of this invention, and Comparative Example 6-10. It is a figure which shows the result of having measured the evaporation loss of the lubricant composition prepared in Example 3-8 and Comparative Example 15-16 of this invention. It is a figure which shows the result of having measured the evaporation loss of the lubricant composition prepared in Examples 9-14 of this invention.
- FIG. 3 is a diagram showing a 1 H-NMR chart of Compound 1 obtained in Production Example 1 of the present invention.
- FIG. 3 is a diagram showing a 1 H-NMR chart of Compound 3 obtained in Production Example 3 of the present invention.
- FIG. 6 is a diagram showing a 1 H-NMR chart of Compound 5 obtained in Production Example 5 of the present invention.
- FIG. 6 is a diagram showing a 1 H-NMR chart of Compound 6 obtained in Production Example 6 of the present invention.
- FIG. 3 shows a 1 H-NMR chart of Compound 10 obtained in Production Example 10 of the present invention.
- the present invention will be described in the order of (1) the lubricant composition according to the present invention, (2) use of the lubricant composition according to the present invention, and (3) the aliphatic ether compound according to the present invention.
- Lubricant composition according to the present invention
- an antioxidant comprising a fatty ether compound as a base oil and comprising at least an alkylated phenylnaphthylamine and a phosphite.
- the total amount of the alkylated phenylnaphthylamine and phosphite is a predetermined amount with respect to the total amount of the base oil, and the content ratio of the alkylated phenylnaphthylamine and phosphite is a predetermined ratio.
- a lubricant composition having high moisture resistance and having physical properties such as low viscosity, low evaporation, low temperature fluidity and high viscosity index is provided.
- the present invention has been completed.
- Such a high combined effect of alkylated phenylnaphthylamine and phosphite is an effect that is characteristic of aliphatic ether compounds among various base oils.
- the lubricant composition according to the present invention uses an aliphatic ether compound as a base oil.
- the present inventors have found that when an alkylated phenylnaphthylamine and a phosphite ester are used in combination as an antioxidant, the evaporation loss can be significantly reduced, and such a high combined effect is various. It has been found that this effect is unique to aliphatic ether compounds in base oils. That is, when an aliphatic ether compound is used as a base oil, a high combined effect of an alkylated phenylnaphthylamine and a phosphite can be obtained in that remarkable low evaporation is brought about.
- the aliphatic ether compound since the aliphatic ether compound is not hydrolyzed by moisture in the air to generate an acid, it has excellent moisture resistance. Furthermore, since aliphatic ether compounds have a lower polarity than ester base oils, there is no problem of adversely affecting organic materials such as rubber and plastic.
- the aliphatic ether used as a base oil in the present invention is not particularly limited, and an aliphatic ether usually used as a base oil for a lubricant can be suitably used.
- the aliphatic ether is more preferably an aliphatic ether having 8 to 300 carbon atoms in one molecule and 1 to 150 oxygen atoms in one molecule. It is preferable that the number of carbon atoms in one molecule and the number of oxygen atoms in one molecule are within the above ranges because the balance of viscosity, low evaporation and low temperature fluidity is good.
- the aliphatic ether preferably has 8 to 80 carbon atoms in one molecule and 1 to 40 oxygen atoms, more preferably has 8 to 60 carbon atoms in one molecule.
- the number of oxygen atoms is particularly preferably in the range of 1 to 30, and most preferably in the range of 8 to 40 carbon atoms and 1 to 20 oxygen atoms in one molecule.
- the aliphatic ether has the following general formula (11)
- the 2- (2-ethylhexyloxy) ethyl ether compound having a structure represented by the formula is more preferable.
- R 1 represents an alkyl group having 1 to 18 carbon atoms
- R 2 represents an alkylene group having 2 to 18 carbon atoms
- n represents an integer of 1 to 6 on average.
- (R 2 —O) may be the same or different for each structural unit.
- R 1 and R 2 may be linear or branched. If the carbon number of R 1 is 1 or more, that is, if the terminal of the molecular structure is not a hydroxyl group but an alkoxyl group in the ether compound, it is preferable because the separation from water is improved. It is preferable because the low temperature fluidity is not significantly impaired. In addition, if R 2 has 2 or more carbon atoms, it is preferable to be an ether that does not contain an acetal structure, which is excellent in moisture resistance and Lewis acid resistance, and if it is 18 or less, low-temperature fluidity is greatly impaired. Because there is no R 1 preferably has 1 to 12 carbon atoms, more preferably 2 to 8 carbon atoms.
- R 2 has more preferably 2 to 12 carbon atoms, and further preferably 2 to 8 carbon atoms. If n is 1 to 6 on average, it is preferable because the balance of viscosity, low evaporation and low temperature fluidity is good.
- the average value of n is more preferably 1 to 4, and further preferably 1 to 2.
- the aliphatic ether is more preferably at least one selected from the group consisting of compounds having structures represented by the chemical formulas (1) to (10).
- the compound having the structure represented by the chemical formula (1) is the compound 1
- the compound having the structure represented by the chemical formula (2) is the compound 2
- the compound having the structure represented by the chemical formula (3) is used.
- Compound 3 is a compound
- compound 4 is a compound having a structure represented by chemical formula (4)
- compound 5 is a compound having a structure represented by chemical formula (5)
- Compound 6 compound 7 having a structure represented by chemical formula (7), compound 8 having a structure represented by chemical formula (8), compound 9 having a structure represented by chemical formula (9)
- a compound having a structure represented by the chemical formula (10) may be referred to as a compound 10.
- the above-mentioned aliphatic ether may be used alone, or two or more of the above-mentioned aliphatic ethers may be used in combination.
- the lubricant composition according to the present invention uses an aliphatic ether compound as a base oil, but contains a small amount of a base oil other than the aliphatic ether compound as long as the effect of the present invention is not adversely affected. You may go out.
- the base oil other than the aliphatic ether compound is preferably 10% by weight or less, and more preferably 5% by weight or less, based on the total amount of the base oil.
- the method for producing the aliphatic ether is not particularly limited, and may be obtained by any production method.
- the aliphatic ether can be produced by polymerizing alkylene oxide such as ethylene oxide or propylene oxide.
- the said aliphatic ether can be manufactured also by etherifying the terminal hydroxyl group of the said polyalkylene oxide by the substitution reaction of the polyalkylene oxide obtained by the said method, and alkyl chloride.
- aliphatic ether for example, ADEKA CARPOL M series from ADEKA Corporation, Neugen XL series such as Neugen XL-40 from Daiichi Kogyo Seiyaku Co., Ltd., Neugen TDS-30 Neugen TDS series such as Neugen TDX series such as Neugen TDX-50, Neugen SD series such as Neugen SD-60, Neugen LP series such as Neugen LP-100, Anti-Floss F-233 and the like can be suitably used.
- Neugen TDS-30 Neugen TDS series such as Neugen TDX series such as Neugen TDX-50, Neugen SD series such as Neugen SD-60, Neugen LP series such as Neugen LP-100, Anti-Floss F-233 and the like can be suitably used.
- the production method of the compound 1-10 is not particularly limited.
- the compound 1-10 can be produced by an existing synthesis method described in WO2006 / 025253, for example.
- compound 1 can be obtained, for example, by an etherification reaction of 2-ethylhexyloxyethyl alcohol and 1,6-dichlorohexane.
- compound 3 synthesizes 6- [2- (2-ethylhexyloxy) ethoxy] -hexyl chloride by an etherification reaction of 2- (2-ethylhexyloxy) ethyl alcohol and 1,6-dichlorohexane. Then, it can be isolated and purified as an intermediate by distillation under reduced pressure and obtained by etherification reaction of this intermediate and 2-butyloctanol.
- Compound 4 can be synthesized by performing an etherification reaction using a corresponding alcohol in place of 2-butyloctanol in the same manner as the synthesis method of Compound 3, for example. it can.
- Compound 2 Compound 7, Compound 8, and Compound 9 are prepared in the same manner as in the synthesis method of Compound 3, for example, by using 1,4-dichlorohexane instead of 1,6-dichlorohexane, and 4- [2 -(2-Ethylhexyloxy) ethoxy] -butyl chloride can be synthesized, isolated and purified as an intermediate by distillation under reduced pressure, and synthesized by performing an etherification reaction using each of the intermediate and the corresponding alcohol. .
- the synthesis method of Compound 1-10 is not limited to the above method.
- the product is appropriately purified using a known method (for example, distillation under reduced pressure or silica gel column chromatography), whereby compound 1-10 is converted into a lubricant. It can be used as a base oil.
- an aliphatic ether compound is used as a base oil, and as an antioxidant, at least an alkylated phenylnaphthylamine and a phosphite, and a total of the alkylated phenylnaphthylamine and a phosphite.
- the amount is a predetermined amount relative to the total amount of the base oil, and is contained so that the content ratio of the alkylated phenylnaphthylamine and the phosphite is a predetermined ratio.
- alkylated phenylnaphthylamine and a phosphite ester together as an antioxidant, these can act synergistically to obtain an effect of promoting low evaporation. Moreover, the combined use of alkylated phenylnaphthylamine and phosphite ester can also provide an effect that the duration of the antioxidant effect becomes longer.
- alkylated phenylnaphthylamine used in the present invention, in other words, the alkyl-substituted phenyl naphthylamine is particularly limited as long as at least one of the phenyl group and the naphthyl group of the phenyl naphthylamine is substituted with an alkyl group.
- the following general formula (12) the following general formula (12)
- R 3 and R 4 each independently represent a linear or branched alkyl group having 1 to 18 carbon atoms. l is an integer of 0 to 5, m is an integer of 0 to 7, and 1 + m is 1 or more. It is preferable that R 3 and R 4 are alkyl groups having 4 to 18 carbon atoms because they have high solubility in aliphatic ether compounds and the alkylated phenylnaphthylamine itself is difficult to evaporate.
- R 3 for example, methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group
- alkyl groups such as a group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, and an octadecyl group, and these may be linear or branched.
- R 3 is more preferably an alkyl group having 4 to 18 carbon atoms, and particularly preferably an alkyl group having 4 to 12 carbon atoms.
- R 3 is more preferably an alkyl group having 4 to 18 carbon atoms, and particularly preferably an alkyl group having 4 to 12 carbon atoms.
- the number of substituents 1 is 2 or more, two or more R 3 s may be the same or different.
- the substitution position of R 3 is not particularly limited.
- l may be an integer of 0 to 5, more preferably 0 to 2, and still more preferably 0 to 1.
- R 4 for example, methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group And alkyl groups such as a pentadecyl group, a hexadecyl group, a heptadecyl group, and an octadecyl group, which may be linear or branched.
- R 4 is more preferably an alkyl group having 4 to 18 carbon atoms, and particularly preferably an alkyl group having 4 to 12 carbon atoms.
- m may be an integer of 0 to 7, more preferably 0 to 2, and still more preferably 0 to 1.
- Examples of the compound represented by the general formula (12) or (13) include: R 3 is an alkyl group having 4 to 12 carbon atoms, 1 is an integer of 0 to 1, and R 4 is an alkyl group having 4 to 12 carbon atoms, An alkylated phenylnaphthylamine in which m is an integer of 0 to 1 and 1 + m is 1 or more can be particularly preferably used.
- alkylated phenylnaphthylamines include, for example, N-phenyl-dodecylnaphthalen-1-amine, N-phenyl-octylnaphthalen-1-amine, N-phenyl-butylnaphthalen-1-amine, and N-dodecylphenyl.
- N-phenyl-dodecylnaphthalen-1-amine N-phenyl-dodecylnaphthalen-1-amine
- N-octylphenyl-octylnaphthalen-1-amine N-dodecylphenyl-naphthalen-1-amine
- N-octylphenyl-naphthalen-1-amine N-octylphenyl-naphthalen-1-amine and the like.
- alkylated phenyl naphthylamine Commercially available products can be used as the alkylated phenyl naphthylamine.
- IRGANOX L06 from BASF
- Naugalube APAN from Chemtura
- Chemtura can be suitably used.
- the phosphite used in the present invention is not particularly limited as long as it is an ester of phosphorous acid.
- a phosphite having a structure represented by the formula can be suitably used.
- R 5 , R 6 , and R 7 each independently represent an aliphatic hydrocarbon group having 1 to 18 carbon atoms or an aromatic hydrocarbon group having 4 to 30 carbon atoms.
- R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 and R 18 are each independently an aliphatic group having 1 to 18 carbon atoms.
- X represents a divalent, trivalent or tetravalent aliphatic hydrocarbon group having 1 to 18 carbon atoms
- n represents 0, 1 or 2 It is.
- R 5 , R 6 , R 7 , R 10 , R 11 , R 14 , R 15 , R 17 and R 18 are aliphatic hydrocarbon groups
- examples of the aliphatic hydrocarbon group include a methyl group , Ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group Examples thereof include alkyl groups such as a group, and these may be linear or branched.
- the aliphatic hydrocarbon group is not limited to the alkyl group, and may be an unsaturated aliphatic hydrocarbon group.
- R 12 , R 13 and R 16 are aliphatic hydrocarbon groups
- examples of such aliphatic hydrocarbon groups include alkylene groups having 1 to 18 carbon atoms, which are linear. It may be branched or branched.
- the aliphatic hydrocarbon group is not limited to the alkylene group, and may be an unsaturated aliphatic hydrocarbon group.
- R 5 , R 6 , R 7 , R 10 , R 11 , R 14 , R 15 , R 17 and R 18 are aromatic hydrocarbon groups
- examples of such aromatic hydrocarbon groups include phenyl groups And alkylated phenyl groups.
- the alkylated phenyl group may be a linear or branched alkyl group having 1 to 18 carbon atoms and a phenyl group in which at least 1 to 5 hydrogen atoms of the benzene ring are substituted.
- the position of the benzene ring is not particularly limited. When the number of substituents is 2 or more, the two or more alkyl groups may be the same or different.
- R 12 , R 13 and R 16 are aromatic hydrocarbon groups
- aromatic hydrocarbon groups include phenylene groups and alkylated phenylene groups.
- the alkylated phenylene group may be a linear or branched alkyl group having 1 to 18 carbon atoms, and may be a phenylene group in which at least 1 to 4 hydrogen atoms of the benzene ring are substituted, and is alkyl-substituted.
- the position of the benzene ring is not particularly limited. When the number of substituents is 2 or more, the two or more alkyl groups may be the same or different.
- X is not particularly limited as long as it is a divalent, trivalent or tetravalent aliphatic hydrocarbon group having 1 to 18 carbon atoms, and even if it is a saturated aliphatic hydrocarbon group, unsaturated aliphatic carbonization It may be a hydrogen group, linear or branched. More preferably, the aliphatic hydrocarbon group is a branched or straight-chain saturated aliphatic hydrocarbon group having 1 to 6 carbon atoms. R 12 , R 13 and R 16 may be bonded to any carbon of the aliphatic hydrocarbon group.
- More specific examples of the phosphite having the structure represented by the general formula (14) include triphenyl phosphite, trisnonylphenyl phosphite, tricresyl phosphite, triethyl phosphite, tris (2- Ethylhexyl) phosphite, tridecyl phosphite, trilauryl phosphite, tris (tridecyl) phosphite, trioleyl phosphite, diphenyl mono (2-ethylhexyl) phosphite, diphenyl monodecyl phosphite, diphenyl mono (tridecyl) phosphite , Tristearyl phosphite, tris (2,4-di-tert-butylphenyl) phosphite, and the like.
- phosphite having the structure represented by the general formula (16), 1,1,3-tris (2-methyl-4-ditridecyl phosphite-5-t-butylphenyl) ) Butane (Adeka Corporation ADEKA STAB 522A), tetraphenyl (tetratridecyl) pentaerythritol tetraphosphite and bis (2-ethylhexyl) phthalate, tetra (C12-C15 alkyl) -4,4'-isopropylidenediphenyl A diphosphite etc. can be mentioned.
- trilauryl trithiophosphite tetraphenyldipropylene glycol diphosphite, bis (tridecyl) pentaerythritol diphosphite and bis Mixture of (nonylphenyl) pentaerythritol diphosphite, bis (decyl) pentaerythritol diphosphite, bis (tridecyl) pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, hydrogenated bisphenol A pentaerythritol phosphite polymer Hydrogenated bisphenol A phosphite polymer and the like can also be suitably used as a phosphite in the present invention.
- phosphite As the phosphite, a commercially available product can be used. For example, JP-360, JP-351, JP-3CP, JP-302, JP-308E, JP-310, JP of Johoku Chemical Industry Co., Ltd.
- ADK STAB 522A or the like can be preferably used.
- the phosphite is a low-evaporation phosphite having a molecular weight of 300 or more. If the molecular weight of the phosphite is within the above range, it is preferable because the phosphite itself hardly evaporates.
- the phosphite ester is more preferably a phosphite ester having a molecular weight in the range of 400 to 1,000, and particularly preferably a phosphite ester having a molecular weight in the range of 500 to 800.
- the total amount of the alkylated phenylnaphthylamine and phosphite contained in the lubricant composition of the present invention is preferably 3 to 8% by weight based on the total amount of the base oil.
- the evaporation loss of the lubricant composition is small and the increase in evaporation loss is abrupt. The effect that the time until the gradient is large can be obtained.
- the total amount of the alkylated phenylnaphthylamine and the phosphite is 8% by weight or less based on the total amount of the base oil, an increase in viscosity can be suppressed, and thermal stability is excellent.
- a lubricant composition can be obtained.
- the content ratio of the alkylated phenylnaphthylamine and the phosphite is 85 to 95% by weight of the alkylated phenylnaphthylamine with respect to the total amount of the alkylated phenylnaphthylamine and the phosphite.
- the phosphate ester is preferably 5 to 15% by weight.
- the content ratio of the alkylated phenylnaphthylamine and the phosphite is within the above range, it is possible to obtain the effect that the evaporation loss of the lubricant composition is small and the duration of the antioxidant effect is longer. In the point which can be done, the remarkable effect can be acquired.
- the lubricant composition according to the present invention uses an alkylated phenylnaphthylamine and a phosphite as an antioxidant.
- an antioxidant other than phenylnaphthylamine and phosphite may be contained.
- the antioxidant other than the alkylated phenylnaphthylamine and phosphite is preferably 10% by weight or less, and more preferably 5% by weight or less based on the total amount of the antioxidant.
- the lubricant composition according to the present invention may contain various additives in order to further improve practical performance.
- additives include metal deactivators, corrosion inhibitors, and conductivity imparting agents.
- metal deactivator examples include benzotriazole, 5-methyl-1H-benzotriazole, 1-dioctylaminomethylbenzotriazole, 1-dioctylaminomethyl-5-methylbenzotriazole, 2- (5′-methyl-2 '-Hydroxyphenyl) benzotriazole, 2- [2'-hydroxy-3', 5'-bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl] -2H-benzotriazole, 2- (3 ', 5'-di- t-butyl-2'-hydroxyphenyl) benzotriazole, 2- (3'-t-butyl-5'-methyl-2'-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3 ', 5'- Di-t-butyl-2′-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3 ′, 5′-di-t-amyl-2) '-Hydroxyphenyl
- the corrosion inhibitor examples include alkyl or alkenyl succinic acid derivatives such as dodecenyl succinic acid half ester, octadecenyl succinic anhydride, dodecenyl succinic acid amide; sorbitan monooleate, glycerin monooleate, pentaerythritol monooleate Polyhydric alcohol partial esters such as Ca-petroleum sulfonate, Ca-alkylbenzene sulfonate, Ba-alkylbenzene sulfonate, Mg-alkylbenzene sulfonate, Na-alkylbenzene sulfonate, Zn-alkylbenzene sulfonate, Ca- Metal sulfonates such as alkyl naphthalene sulfonate; amines such as rosin amine and N-oleyl sarcosine can be preferably used.
- alkyl naphthalene sulfonate ester sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, etc.
- the conductivity-imparting agent alkyl naphthalene sulfonate ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, etc. can be suitably used.
- one or more selected from these additives are blended in the range of 0.01% by weight to 1% by weight with respect to the total amount of the lubricant composition.
- the practical performance of the lubricant composition can be further improved.
- the lubricant composition according to the present invention has physical properties such as low viscosity, low evaporation, low temperature fluidity, and high viscosity index, and metal corrosion due to hydrolysis is suppressed, and adverse effects on organic materials due to the above configuration. Less is. Moreover, it is excellent also in the point that the effect duration of antioxidant is long.
- the lubricant composition according to the present invention preferably has a kinematic viscosity at 40 ° C. (hereinafter also referred to as “40 ° C. kinematic viscosity”) in the range of 4 cSt to 1000 cSt, and preferably in the range of 6 cSt to 30 cSt. More preferred.
- 40 ° C. kinematic viscosity is in the above range, the bearing oil can be particularly excellent in lubrication performance and energy saving performance.
- the lubricant composition according to the present invention has a viscosity index of preferably 80 or higher, more preferably 110 or higher, and a pour point of preferably ⁇ 5 ° C. or lower, more preferably ⁇ 40 ° C. or lower.
- the bearing lubricant can be particularly excellent in viscosity characteristics at low temperatures.
- kinematic viscosity at 40 ° C. can be measured by the methods shown in Examples described later.
- the lubricant composition of the present invention can be used as a bearing oil for any bearing lubricated with a lubricant. Accordingly, the present invention includes bearing oils using the lubricant composition of the present invention.
- the lubricant composition of the present invention includes, for example, a shaft member and a bearing member (sleeve member), and the shaft member and the bearing member are rotatably fitted through a minute gap, and are inserted into the minute gap.
- the working fluid (bearing oil) is accommodated so as to form a lubricating film, and the shaft member and the bearing member serve as bearing oil with respect to any bearing that relatively slides through the lubricating film. It can be preferably used.
- Such a bearing is generally referred to as a “slide bearing”.
- the lubricant composition of the present invention is also suitably used as a bearing oil for a fluid bearing (fluid dynamic pressure bearing or hydrostatic bearing) or a bearing oil for an impregnated bearing (also referred to as “oil-impregnated bearing”). be able to.
- the bearing according to the present invention is lubricated using the above-described lubricant composition of the present invention. If the bearing which concerns on this invention is a bearing lubricated using the lubricant composition of this invention mentioned above, the structure will not be specifically limited.
- the above-mentioned “lubricated using the lubricant composition of the present invention” means that the members facing each other through the lubricant composition of the present invention are relatively relative to each other through the lubricant composition of the present invention. Intended to do a sliding exercise. Examples of such bearings include fluid bearings and impregnated bearings.
- the “fluid bearing” does not have a mechanism such as a ball bearing, and includes a shaft member (or thrust plate) and a sleeve member, and the shaft member (or thrust plate), the sleeve member,
- the working fluid lubricant composition
- the shaft member (or thrust plate) and the The configuration is not particularly limited as long as it is a conventionally known fluid bearing in which the sleeve member is held so as not to be in direct contact with each other by the lubricating film.
- hydrodynamic bearings either or both of a shaft member and a sleeve member are provided with a dynamic pressure generating groove, and the shaft member is supported by the dynamic pressure;
- a fluid bearing or the like provided with a thrust plate so as to generate dynamic pressure in the vertical direction is particularly referred to as a fluid dynamic pressure bearing.
- the fluid dynamic pressure bearing is also included in the bearing of the present invention.
- the “impregnated bearing” is a conventionally known impregnated bearing (oil-impregnated bearing) formed by impregnating a porous shaft member such as sintered metal or synthetic resin with the lubricant composition of the present invention.
- the configuration is not particularly limited.
- the lubricant composition of the present invention has high moisture resistance and low viscosity, low evaporation, low-temperature fluidity, high viscosity index, etc., compared with conventional bearing lubricants.
- the physical properties can be satisfied in a well-balanced manner. Therefore, the bearing of the present invention lubricated using the lubricant composition of the present invention as a working fluid retains stability and durability when rotated at high speed for a long period of time, and is excellent in energy saving. It can be a bearing.
- the bearing according to the present invention is effective as a bearing used in a rotating device of an electronic device such as a video / audio device or a personal computer, which is required to be small and light, have a large capacity, and perform high-speed information processing. Can be used.
- the motor according to the present invention includes the bearing according to the present invention. As long as the motor according to the present invention includes the bearing of the present invention, other configurations are not particularly limited.
- the bearing of the present invention is as described in the above section [Bearing], and therefore the description thereof is omitted here.
- Examples of the motor according to the present invention include a motor provided in a known electronic device such as a personal computer, an audio device, a visual device, and a car navigation system.
- the motor according to the present invention includes a bearing lubricated with the lubricant composition of the present invention, metal wear and seizure are less likely to occur compared to conventional motors. Static electricity is unlikely to accumulate between the shaft member. For this reason, stability and durability when the bearing is rotated at a high speed can be maintained over a long period of time, and as a result, a longer life of the motor can be achieved. Furthermore, the motor according to the present invention can be a motor that is particularly excellent in energy saving when the bearing is rotated at a high speed as compared with a conventional motor.
- the bearing lubrication method according to the present invention is characterized in that the bearing of the present invention is lubricated using the lubricant composition of the present invention.
- the lubricant composition of the present invention and the bearing of the present invention are as described in the above-mentioned section of “(1) Lubricant composition according to the present invention” and the above section of [Bearing]. The description is omitted here.
- the lubricant composition of the present invention has high moisture resistance and low viscosity, low evaporation, low-temperature fluidity, high viscosity index, etc., compared with conventional bearing lubricants.
- the physical properties can be satisfied in a well-balanced manner. Therefore, the working fluid for lubricating the bearing of the lubricant composition of the present invention is filled with a bearing, in particular, a fluid bearing or an impregnated bearing, and lubricated, whereby the stability when the bearing is rotated at a high speed and The durability and the like can be maintained over a long period of time, and as a result, the life of the bearing can be extended. Furthermore, the energy saving property of the bearing can be improved.
- the grease according to the present invention contains the lubricant composition of the present invention.
- the present invention also includes the use of a lubricant composition for producing grease.
- the lubricant composition of the present invention is as described in the above section “(1) Lubricant composition according to the present invention”, and thus the description thereof is omitted here.
- the lubricant composition of the present invention is preferably contained in an amount of 50% by weight or more, more preferably 95% by weight or more based on the total weight of the grease.
- the grease according to the present invention may be solid at room temperature or semi-solid. Further, the grease according to the present invention usually contains an amount of a thickener necessary for obtaining a grease having a desired consistency. For example, usually 10 to 40% by weight of a thickener is contained with respect to the total weight of the grease.
- thickener a thickener usually used in grease can be used, and examples thereof include lithium soap, calcium soap, sodium soap, and aluminum soap, but are not limited thereto.
- the grease according to the present invention may further contain additives such as an antioxidant, an extreme pressure agent, and a corrosion inhibitor, if necessary. These additives can improve the practical performance of the grease by blending them in the range of 0.1 to 5% by weight with respect to the total weight of the grease.
- the application of the grease according to the present invention is not particularly limited, but it can be suitably used as a bearing grease, particularly a fluid bearing grease or an impregnated bearing grease.
- the manufacturing method of the grease according to the present invention is not particularly limited, and can be manufactured according to a general manufacturing method of grease.
- the grease according to the present invention contains the lubricant composition of the present invention as a base oil, energy saving, high moisture resistance, low evaporation, viscosity characteristics at low temperature, etc., compared to conventional greases, etc.
- the grease can satisfy all of the performances more reliably and in a balanced manner.
- the refrigerating machine oil according to the present invention contains the lubricant composition of the present invention.
- the lubricant composition of the present invention is as described in the above section “(1) Lubricant composition according to the present invention”, and thus the description thereof is omitted here.
- the refrigerating machine oil according to the present invention preferably contains 80% by weight or more, more preferably 90% by weight or more of the lubricant composition of the present invention with respect to the total weight of the refrigerating machine oil.
- the refrigerating machine oil according to the present invention may further contain additives such as a metal deactivator, a corrosion inhibitor, and a conductivity imparting agent as necessary.
- additives such as a metal deactivator, a corrosion inhibitor, and a conductivity imparting agent as necessary.
- the method for producing the refrigerating machine oil according to the present invention is not particularly limited, and the refrigerating machine oil can be produced according to a general method for producing refrigerating machine oil.
- the refrigerating machine oil according to the present invention contains the lubricant composition of the present invention as a base oil, energy saving, high moisture resistance, low evaporation, and viscosity at low temperature compared to conventional refrigerating machine oils. It can be a refrigerating machine oil that satisfies all of the performance such as characteristics more reliably and in a balanced manner.
- Aliphatic ether compound according to the present invention The aliphatic ether compound that can be suitably used in the lubricating oil composition according to the present invention includes novel compounds. Therefore, such novel compounds are also included in the present invention.
- Examples of the aliphatic ether compound according to the present invention include an aliphatic ether compound having a structure represented by any one of the chemical formulas (1) to (9).
- Such an aliphatic ether compound has high moisture resistance and has physical properties such as low viscosity, low temperature fluidity and high viscosity index, and therefore can be suitably used as a base oil of a lubricating oil composition.
- alkylated phenyl naphthylamine and phosphite are used as antioxidants, a remarkable effect of low evaporating property is observed among aliphatic base compounds among various base oils.
- the aliphatic ether compound according to the present invention preferably has a kinematic viscosity at 40 ° C. (hereinafter also referred to as “40 ° C. kinematic viscosity”) in the range of 4 cSt to 1000 cSt, and preferably in the range of 4 cSt to 80 cSt. More preferred.
- 40 ° C. kinematic viscosity is in the above range, the lubricating composition and the energy saving performance of the lubricant composition based on the aliphatic ether compound according to the present invention and the bearing oil, grease, and refrigerating machine oil containing the lubricant composition are particularly excellent. Can be a thing.
- the aliphatic ether compound according to the present invention has a viscosity index of preferably 80 or higher, more preferably 110 or higher, and a pour point of preferably ⁇ 5 ° C. or lower, more preferably ⁇ 40 ° C. or lower.
- the viscosity characteristics at low temperatures of the lubricant composition based on the aliphatic ether compound according to the present invention and the bearing oil, grease, and refrigerating machine oil containing the lubricant composition can be particularly excellent.
- wt% is expressed as “wt%”, and only the number and symbol of the lubricant composition are shown.
- ⁇ Evaporation loss> The evaporation loss was measured by an evaporation test at 180 ° C. Specifically, 2 g of the lubricant composition was placed in a cylindrical test container having a material of SUS304, an inner diameter of 20 mm, and a height of 35 mm, and the lubricant composition after being left standing in a constant temperature bath with a rotating plate at 180 ° C. for a predetermined time. The weight was measured. The evaporation loss was determined by the following formula. In addition, the average value of two measurements was used as a measurement result.
- Evaporation loss (% by weight) (2 (g) ⁇ weight of lubricant composition after standing for a predetermined time (g)) ⁇ 100/2 (g) ⁇ Decomposition rate after 65 hours of base oil> 10 g of sample, 1 g of water, 4 g of copper-based sintered bearing metal powder (copper 88 wt%, tin weight 10%, lead 2 wt%) were sealed in a pressure vessel made of SUS and stirred while heating at 160 ° C. for 65 hours. . Samples before and after the test were analyzed using gas chromatography, and the 65 hour post-decomposition rate of the base oil was determined from the residual rate of the base oil according to the following formula.
- 1-octanol 1508 g, 4- [2- (2-ethylhexyloxy) ethoxy] -butyl chloride 1185 g, and potassium hydroxide 282 g were placed in a 5-liter glass flask, and the mixture was reacted at 180 ° C. for 5 hours with stirring. . Thereafter, the reaction solution was cooled to room temperature, and neutralized by adding hydrochloric acid to neutralize excess alkali. The reaction solution was washed with 3 liters of water, the organic layer was separated using a separatory funnel, and the compound 7 was isolated by distillation under reduced pressure from the organic layer.
- Base oil and additives In the following Examples, Reference Examples, and Comparative Examples, the base oil obtained by the above synthesis example, and the base oils and additives shown below were used.
- MPDC11 (3-methyl-1,5-pentanediol diundecanoate, synthesized by the method described in Japanese Patent No. 4466850)
- IRGANOX L06 (BASF, N-phenyl-1,1,3,3-tetramethylbutylnaphthalen-1-amine, sometimes referred to as “L06” in the table)
- Naugalube APAN (Chemtura, N-phenyl-2,4,6,8-tetramethyloctylnaphthalen-1-amine, sometimes referred to as “APAN” in the table)
- IRGANOX L57 BASF, 2,4,4-trimethylpentyldiphenylamine
- AO-50F (ADEKA Corporation, 3- (4′-hydroxy-3′-5′-di-t-butylphenyl) propionic acid-n
- the vertical axis represents the evaporation loss (unit:% by weight), and the horizontal axis represents the standing time (indicated as “elapsed time” in the figure, unit: time).
- alkylated phenyl naphthylamine and phosphite are used as antioxidants, and the ratio is 95 wt% alkylated phenyl naphthylamine and 5 wt% phosphite.
- Example 1 it was shown that the evaporation loss was small and the time until the increase in evaporation loss suddenly increased was large.
- Comparative Example 4 in which only the phosphite was used as the antioxidant and no alkylated phenylnaphthylamine was used, as compared with the case where the alkylated phenylnaphthylamine and the phosphite were used in combination as the antioxidant.
- the evaporation loss is increasing from an early point.
- Comparative Example 2 in which alkylated phenylnaphthylamine is 97% by weight and phosphite is 3% by weight
- Comparative Example 3 in which alkylated phenylnaphthylamine is 80% by weight and phosphite is 20% by weight
- Reference Example 1-3 in which the alkylated phenylnaphthylamine is 85 to 95% by weight and the phosphite is 15 to 5% by weight, the evaporation loss is remarkably increased.
- Example 1-2 Comparative example 6-10
- Lubricant Composition Q-W having the composition shown in Table 2 was prepared, and the evaporation loss was measured by changing the standing time in a constant temperature bath with a rotating plate at 180 ° C. did.
- Table 2 shows the evaluation of low evaporation.
- the case where the low evaporation property is excellent is indicated by ⁇
- the case where the low evaporation property is insufficient is indicated by ⁇
- the case where the low evaporation property is poor is indicated by ⁇ .
- Comparative Example 6 as an antioxidant, only alkylated phenylnaphthylamine was used at 3.00% by weight based on the total amount of the lubricating oil composition.
- Comparative Example 7 only alkylated phenylnaphthylamine as an antioxidant was 0.50% by weight relative to the total amount of the lubricating oil composition compared to Comparative Example 6, that is, 3.50% by weight.
- Example 2 instead of using only 0.50% by weight of alkylated phenylnaphthylamine as compared with Comparative Example 6 as the antioxidant in Comparative Example 6, 0.50% by weight of phosphite was used. % Additional used. As a result, as shown in FIG. 2, the alkylated phenylnaphthylamine was used in an amount of 0.50% by weight more than Comparative Example 6 containing 3.00% by weight of the alkylated phenylnaphthylamine with respect to the total amount of the lubricating oil composition. It was found that the loss on evaporation was significantly smaller in Example 2 using 0.50% by weight of phosphite than in Comparative Example 7.
- the phenolic antioxidant has the same ratio as the ratio of the alkylated phenylnaphthylamine and phosphite of Example 2 and the same content with respect to the base oil.
- the evaporation loss is larger than the evaporation loss of Example 2, and the increase in evaporation loss becomes a steep gradient at an early point. It was.
- Comparative Example 8 in which alkylated phenylnaphthylamine was 81.08 wt% and phosphite was 18.92 wt%, and alkylated phenylnaphthylamine was 75
- Comparative Example 9 where the weight percentage is 25% and the phosphite is 25 weight%, the alkylated phenylnaphthylamine is 85 to 95 weight% and the phosphite is in the range 15 to 5 weight%. Compared to 2, the evaporation loss increased.
- Lubricant composition 1-12 having the composition shown in Table 3 was prepared. As shown in Table 3, for various base oils, a lubricant composition using only alkylated phenylnaphthylamine alone as an antioxidant (described as “alone” in Table 3), alkylated phenylnaphthylamine and phosphorus A lubricant composition (described as “Combination” in Table 3) using an antioxidant comprising an acid ester was prepared.
- evaporation loss reduction rate by combined use the evaporation weight loss reduction rate (hereinafter, may be abbreviated as “evaporation loss reduction rate by combined use”) by the combined use of alkylated phenylnaphthylamine and phosphite was calculated by the following formula.
- Reduction rate of evaporation loss due to combined use (%) 100-100 ⁇ (evaporation loss after 16.5 hours of lubricating oil composition containing antioxidant comprising alkylated phenylnaphthylamine and phosphite ester / alkylated phenylnaphthylamine only 12.5 hours after evaporation of a lubricating oil composition containing as an antioxidant)
- Example 3-14 Comparative Example 15-16
- Lubricant compositions L, M and 13-24 having the compositions shown in Table 5 were prepared, and the standing time in a constant temperature bath with a rotating plate at 180 ° C. was changed variously. The evaporation loss was measured.
- the total amount of the alkylated phenylnaphthylamine and the phosphite contained in the lubricating oil composition is 4% by weight with respect to the entire lubricating oil composition.
- Examples 3, 4, 9 and 10, Examples 5, 6, 11 and 12, which are 6% by weight, and Examples 7, 8, 13 and 14 which are 8% by weight the evaporation loss is small and the evaporation loss is also low. It was shown that it took a long time before the rise of the steep slope.
- Example 3 except that the total amount of the alkylated phenylnaphthylamine and phosphite contained in the lubricating oil composition was 2% by weight based on the entire lubricating oil composition.
- Comparative Examples 15 and 16 in which a lubricating oil composition was prepared in the same manner as in -8 and the evaporation loss was measured, the evaporation loss was significantly larger than the evaporation loss of Example 3-8, and the earlier time point The increase in evaporation loss became a steep slope.
- Lubricant Composition AH having the composition shown in Table 6 was prepared, and the evaporation loss was measured by varying the standing time in a constant temperature bath with a 180 ° C. rotating plate. did.
- an aliphatic ether compound was used as the base oil, and as the antioxidant, an alkylated phenylnaphthylamine-based antioxidant and / or an alkylated diphenylamine-based oxidized
- An inhibitor and a phosphite antioxidant are used in combination.
- the alkylated phenyl naphthylamine antioxidant and / or the alkylated diphenylamine antioxidant is used in an amount of 5.5% by weight based on the total amount of the lubricant composition, and the phosphite ester antioxidant is used. Is fixed at 0.5% by weight based on the total amount of the lubricant composition, while the ratio of the alkylated phenylnaphthylamine-based antioxidant to the alkylated diphenylamine-based antioxidant is changed.
- Example 17 in which the amount of alkylated phenylnaphthylamine antioxidant and the amount of alkylated diphenylamine antioxidant used was 5.5% by weight and 0, respectively, the evaporation loss was the smallest and at a later time Rose.
- Lubricant compositions 25-26 and 33-36 having the compositions shown in Table 7 were prepared, and the evaporation loss was measured by varying the standing time in a constant temperature bath with a rotating plate at 180 ° C. Also, the viscosity index was determined by measuring the 40 ° C. kinematic viscosity and 100 ° C. kinematic viscosity of the lubricant composition.
- the obtained lubricant composition had a 40 ° C. kinematic viscosity, a 100 ° C. kinematic viscosity, and a viscosity index equivalent to or superior to those of existing oils in the technical field. Moreover, it was confirmed that the obtained lubricant composition exhibits low evaporation properties equivalent to or superior to existing oils in the technical field.
- Lubricant compositions 27-32 having the compositions shown in Table 8 and Table 9 were prepared, and the evaporation loss was measured by varying the standing time in a constant temperature bath with a rotating plate at 180 ° C.
- the compositions shown in Table 8 are the compositions of existing lubricating oil compositions in the art.
- the decomposition rate after 65 hours of a base oil was measured.
- the decomposition rate after 65 hours of the base oil was measured.
- Table 10 shows the measurement results of the base oil after-hour decomposition rate.
- the existing lubricant compositions 27 and 28 based on the diesters MPDC9 and DOS are compared with the lubricant compositions obtained in Examples 20-22, 24 and Example 18, as shown in FIG. And the evaporation loss was great.
- Table 10 it can be seen that the base oil has a decomposition rate of more than 60% after 65 hours and is inferior in moisture resistance.
- the existing lubricant composition based on MPDC11, which is a diester has a small evaporation loss, but as shown in Table 10, the base oil has a decomposition rate after 60 hours of over 60% and is resistant to moisture. It turns out that it is inferior to.
- the lubricant compositions obtained in Examples 20-22 and 24 and Example 18 are excellent in low evaporation and moisture resistance.
- the compounds 1, 3, 5, and 6 obtained in the synthesis examples have low viscosity relative to the molecular weight compared to the existing diesters MPDC9, MPDC11, and DOS. It was also confirmed that the viscosity index was higher or equivalent to that of existing diesters.
- the lubricant composition according to the present invention has physical properties such as low viscosity, low evaporation, low temperature fluidity, and high viscosity index, and metal corrosion due to hydrolysis is suppressed, and there is little adverse effect on organic materials. Therefore, it can be suitably used as a bearing oil for bearings, a bearing oil for fluid bearings, a bearing oil for impregnated bearings, a raw material for grease, a raw material for refrigerator oil, and the like. Therefore, the present invention has a very high industrial utility value in all technical fields using the lubricant composition.
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Abstract
Description
前記課題に鑑み鋭意検討した結果、本発明者らは、脂肪族エーテル化合物を基油とし、少なくともアルキル化フェニルナフチルアミンと亜リン酸エステルとからなる酸化防止剤を、前記アルキル化フェニルナフチルアミンと亜リン酸エステルとの合計量が、前記基油全量に対して所定量であって、前記アルキル化フェニルナフチルアミンと亜リン酸エステルとの含有比率が所定の比率となるように含有する潤滑剤組成物によれば、高い耐湿性を有し、且つ、低粘度、低蒸発性、低温流動性及び高粘度指数などの物性を有する潤滑剤組成物を提供することができることを見出し、本発明を完成させるに至った。かかる、アルキル化フェニルナフチルアミンと亜リン酸エステルとの高い併用効果は、様々な基油の中で脂肪族エーテル化合物に特有にみられる効果である。
本発明に係る潤滑剤組成物は脂肪族エーテル化合物を基油として用いる。本発明者らは、酸化防止剤として、アルキル化フェニルナフチルアミンと亜リン酸エステルとを併用する場合に、蒸発減量を顕著に低減させることができることを見出し、また、かかる高い併用効果が、様々な基油の中で脂肪族エーテル化合物に特有にみられる効果であることを見出した。すなわち、脂肪族エーテル化合物を基油として用いる場合に、顕著な低蒸発性をもたらすという点で、アルキル化フェニルナフチルアミンと亜リン酸エステルとの高い併用効果を得ることができる。
本発明に係る潤滑剤組成物では、脂肪族エーテル化合物を基油とし、酸化防止剤として、少なくともアルキル化フェニルナフチルアミンと亜リン酸エステルとを、前記アルキル化フェニルナフチルアミンと亜リン酸エステルとの合計量が、前記基油全量に対して所定量であって、前記アルキル化フェニルナフチルアミンと亜リン酸エステルとの含有比率が所定の比率となるように含有させる。
本発明において用いられるアルキル化フェニルナフチルアミン、言い換えれば、アルキル置換されたフェニルナフチルアミンは、フェニルナフチルアミンのフェニル基およびナフチル基の少なくとも何れかがアルキル基で置換されている化合物であれば特に限定されるものではなく、例えば下記一般式(12)
本発明において用いられる亜リン酸エステルとしては、亜リン酸のエステルであれば特に限定されるものではないが、例えば下記一般式(14)
本発明の前記潤滑剤組成物に含有される、前記アルキル化フェニルナフチルアミンと亜リン酸エステルとの合計量は、前記基油全量に対して3~8重量%であることが好ましい。
本発明に係る潤滑剤組成物は、前記基油と前記酸化防止剤とに加えて、実用性能をより向上させるために、各種の添加剤が配合されていてもよい。かかる添加剤としては、金属不活性化剤、腐食防止剤、導電性付与剤等を挙げることができる。
本発明に係る潤滑剤組成物は、上記構成により、低粘度、低蒸発性、低温流動性及び高粘度指数などの物性を有する上に、加水分解による金属腐食が抑えられ、かつ有機材料に対する悪影響が少ない。また、酸化防止剤の効果持続時間が長いという点においても優れている。
〔軸受油〕
本発明の潤滑剤組成物は、潤滑剤を用いて潤滑されるあらゆる軸受の軸受油として使用され得る。したがって本発明には本発明の潤滑剤組成物を用いた軸受油も含まれる。本発明の潤滑剤組成物は、例えば、軸部材と軸受部材(スリーブ部材)とを備え、当該軸部材と当該軸受部材とが、微小間隙を介して回転可能に嵌合し、当該微小間隙には、潤滑膜を形成するように作動流体(軸受油)が収容され、上記軸部材と上記軸受部材とが、上記潤滑膜を介して相対的にすべり運動をするあらゆる軸受に対して軸受油として好適に使用することができる。このような軸受は、一般に「すべり軸受」と称される。
本発明に係る軸受は、上述した本発明の潤滑剤組成物を用いて潤滑される。本発明に係る軸受は、上述した本発明の潤滑剤組成物を用いて潤滑される軸受であれば、その構成は特に限定されるものではない。なお、前記「本発明の潤滑剤組成物を用いて潤滑される」とは、本発明の潤滑剤組成物を介して対向する部材同士が、本発明の潤滑剤組成物を介して相対的にすべり運動をすることを意図している。このような軸受としては、例えば、流体軸受、含浸軸受等を挙げることができる。
本発明に係るモータは、本発明の軸受を備えている。本発明に係るモータは、本発明の軸受を備えていれば、その他の構成は特に限定されない。なお、本発明の軸受については、前記〔軸受〕の項で説明したとおりであるので、ここでは説明は省略する。
〔軸受の潤滑方法〕
本発明に係る軸受の潤滑方法は、本発明の軸受を、本発明の潤滑剤組成物を用いて潤滑させることを特徴としている。なお、本発明の潤滑剤組成物および本発明の軸受については、それぞれ、前記「(1)本発明に係る潤滑剤組成物」の項および前記〔軸受〕の項で説明したとおりであるので、ここでは説明は省略する。
〔グリース〕
本発明に係るグリースは、本発明の潤滑剤組成物を含有している。また、本発明には、グリースを製造するための、潤滑剤組成物の使用も含まれる。なお、本発明の潤滑剤組成物については、上記「(1)本発明に係る潤滑剤組成物」の項で説明したとおりであるので、ここでは説明は省略する。
本発明に係る冷凍機油は、本発明の潤滑剤組成物を含有している。なお、本発明の潤滑剤組成物については、上記「(1)本発明に係る潤滑剤組成物」の項で説明したとおりであるので、ここでは説明は省略する。
本発明に係る潤滑油組成物に好適に用いることができる脂肪族エーテル化合物には、化合物としても新規なものが含まれる。したがって、かかる新規な化合物も本発明に含まれる。本発明にかかる脂肪族エーテル化合物としては、例えば前記化学式(1)~(9)のいずれかで表される構造を有する脂肪族エーテル化合物を挙げることができる。
潤滑剤組成物の諸性能は、以下の方法で測定した。
180℃における蒸発性試験により蒸発減量を測定した。具体的には、材質SUS304、内径20mm、高さ35mmの円筒型試験容器に、潤滑剤組成物を2g入れ、180℃の回転盤付恒温槽に所定時間静置した後の潤滑剤組成物の重量を測定した。蒸発減量を以下の式により求めた。なお、2回の測定の平均値を測定結果として用いた。
蒸発減量(重量%)=(2(g)-所定時間静置した後の潤滑剤組成物の重量(g))×100/2(g)
<基油の65時間後分解率>
試料10g、水1g、銅系焼結軸受金属粉末(銅88重量%、スズ重量10%、鉛2重量%)4gをSUS製の耐圧容器に密閉し、160℃で65時間加熱しながら攪拌した。試験前後の試料を、ガスクロマトグラフィを用いて分析し、基油の残存率から、基油の65時間後分解率を以下の式により求めた。
基油の65時間後分解率(%)=100-基油の残存率(GC%)
<40℃動粘度>
JISK2283に準じ、キャノン-フェンスケ粘度計を用いて40℃における動粘度を測定した。
JISK2283に準じ、キャノン-フェンスケ粘度計を用いて100℃における動粘度を測定した。
JISK2283に準じ、算出した。
ブルックフィールド社製デジタル粘度計(DV-II+Pro)を用い、絶対粘度を測定した。
JISK2269に準じ、測定した。
〔製造例1:化合物1の製造〕
2リットルのガラス製フラスコに、2-エチルヘキシルオキシエチルアルコール1046g、1,6-ジクロロヘキサン230g、水酸化カリウム219gを入れ、180℃で1時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を2リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物1を単離した。得られた化合物1の1H-NMRチャートを図8に示す。
10リットルのガラス製フラスコに、2-(2-エチルヘキシルオキシ)エチルアルコール1310g、1,4-ジクロロブタン3048g、水酸化カリウム438gを入れ、90℃で16時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで4-[2-(2-エチルヘキシルオキシ)エトキシ]-ブチルクロライドを単離した。続いて5リットルのガラス製フラスコに、2-ブチルオクタノール2158g、4-[2-(2-エチルヘキシルオキシ)エトキシ]-ブチルクロライド1185g、水酸化カリウム282gを入れ、180℃で5時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物2を単離した。
10リットルのガラス製フラスコに、2-(2-エチルヘキシルオキシ)エチルアルコール1310g、1,6-ジクロロヘキサン3673g、水酸化カリウム438gを入れ、90℃で16時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで6-[2-(2-エチルヘキシルオキシ)エトキシ]-ヘキシルクロライドを単離した。続いて5リットルのガラス製フラスコに、2-ブチルオクタノール2158g、6-[2-(2-エチルヘキシルオキシ)エトキシ]-ヘキシルクロライド1293g、水酸化カリウム282gを入れ、180℃で5時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物3を単離した。得られた化合物3の1H-NMRチャートを図9に示す。
10リットルのガラス製フラスコに、2-(2-エチルヘキシルオキシ)エチルアルコール1310g、1,6-ジクロロヘキサン3673g、水酸化カリウム438gを入れ、90℃で16時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで6-[2-(2-エチルヘキシルオキシ)エトキシ]-ヘキシルクロライドを単離した。続いて5リットルのガラス製フラスコに、1-オクタノール1508g、6-[2-(2-エチルヘキシルオキシ)エトキシ]-ヘキシルクロライド1293g、水酸化カリウム282gを入れ、180℃で5時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物4を単離した。
10リットルのガラス製フラスコに、2-(2-エチルヘキシルオキシ)エチルアルコール1310g、1,6-ジクロロヘキサン3673g、水酸化カリウム438gを入れ、90℃で16時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで6-[2-(2-エチルヘキシルオキシ)エトキシ]-ヘキシルクロライドを単離した。続いて5リットルのガラス製フラスコに、1-デカノール1832g、6-[2-(2-エチルヘキシルオキシ)エトキシ]-ヘキシルクロライド1293g、水酸化カリウム282gを入れ、180℃で5時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物5を単離した。得られた化合物5の1H-NMRチャートを図10に示す。
10リットルのガラス製フラスコに、2-(2-エチルヘキシルオキシ)エチルアルコール1310g、1,6-ジクロロヘキサン3673g、水酸化カリウム438gを入れ、90℃で16時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで6-[2-(2-エチルヘキシルオキシ)エトキシ]-ヘキシルクロライドを単離した。続いて5リットルのガラス製フラスコに、1-ドデカノール2158g、6-[2-(2-エチルヘキシルオキシ)エトキシ]-ヘキシルクロライド1293g、水酸化カリウム282gを入れ、180℃で5時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物6を単離した。得られた化合物6の1H-NMRチャートを図11に示す。
10リットルのガラス製フラスコに、2-(2-エチルヘキシルオキシ)エチルアルコール1310g、1,4-ジクロロブタン3048g、水酸化カリウム438gを入れ、90℃で16時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで4-[2-(2-エチルヘキシルオキシ)エトキシ]-ブチルクロライドを単離した。続いて5リットルのガラス製フラスコに、1-オクタノール1508g、4-[2-(2-エチルヘキシルオキシ)エトキシ]-ブチルクロライド1185g、水酸化カリウム282gを入れ、180℃で5時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物7を単離した。
10リットルのガラス製フラスコに、2-(2-エチルヘキシルオキシ)エチルアルコール1310g、1,4-ジクロロブタン3048g、水酸化カリウム438gを入れ、90℃で16時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで4-[2-(2-エチルヘキシルオキシ)エトキシ]-ブチルクロライドを単離した。続いて5リットルのガラス製フラスコに、1-デカノール1832g、4-[2-(2-エチルヘキシルオキシ)エトキシ]-ブチルクロライド1185g、水酸化カリウム282gを入れ、180℃で5時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物8を単離した。
10リットルのガラス製フラスコに、2-(2-エチルヘキシルオキシ)エチルアルコール1310g、1,4-ジクロロブタン3048g、水酸化カリウム438gを入れ、90℃で16時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで4-[2-(2-エチルヘキシルオキシ)エトキシ]-ブチルクロライドを単離した。続いて5リットルのガラス製フラスコに、1-ドデカノール2158g、4-[2-(2-エチルヘキシルオキシ)エトキシ]-ブチルクロライド1185g、水酸化カリウム282gを入れ、180℃で5時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を3リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物9を単離した。
2リットルのガラス製フラスコに、2-ブチルオクタノール1117g、1,4-ジクロロブタン191g、水酸化カリウム219gを入れ、180℃で16時間攪拌し反応させた。その後、反応液を室温に冷却し、過剰のアルカリを中和するため塩酸を加え中性にした。この反応液を2リットルの水で水洗後、分液ろうとを用いて有機層を分取し、有機層から減圧蒸留することで化合物10を単離した。得られた化合物10の1H-NMRチャートを図12に示す。
以下の実施例、参考例、比較例においては、前記合成例によって得られた基油、ならびに、以下に示す基油および添加剤を用いた。
<基油>
・セバシン酸ジオクチル(以下、本明細書においてDOSと称することがある。)
・モレスコホワイトP-70(株式会社MORESCO、流動パラフィン)
・モレスコハイルーブLB-15(株式会社MORESCO、アルキルジフェニルエーテル)
・ユニスター(登録商標)H334R(日油株式会社、トリメチロールプロパン由来のトリエステル)
・アデカカーポールM-60(株式会社ADEKA、ポリアルキレングリコール)
・MPDC9(3-メチル-1,5-ペンタンジオール ジノナノエート、特許第4466850号に記載の方法で合成した。)
・MPDC11(3-メチル-1,5-ペンタンジオール ジウンデカノエート、特許第4466850号に記載の方法で合成した。)
<アルキル化フェニルナフチルアミン系酸化防止剤>
・IRGANOX L06(BASF社、N-フェニル-1,1,3,3-テトラメチルブチルナフタレン-1-アミン、表中「L06」と表記することがある。)
・Naugalube APAN(Chemtura社、N-フェニル-2,4,6,8-テトラメチルオクチルナフタレン-1-アミン、表中「APAN」と表記することがある。)
<ジフェニルアミン系酸化防止剤>
・IRGANOX L57(BASF社、2,4,4-トリメチルペンチルジフェニルアミン)
<フェノール系酸化防止剤>
・AO-50F(株式会社ADEKA、3-(4’-ヒドロキシ-3’-5’-ジ-t-ブチルフェニル)プロピオン酸-n-オクタデシル)
<亜リン酸エステル系酸化防止剤>
・アデカスタブ522A(株式会社ADEKA、1,1,3-トリス(2-メチル-4-ジトリデシルホスファイト-5-t-ブチルフェニル)ブタン)
<金属不活性化剤>
・IRGAMET 39(BASF社、N,N-ビス(2-エチルヘキシル)-(4又は5)-メチル-1H-ベンゾトリアゾール-1-メチルアミン)
<腐食防止剤>
・IRGACOR L12(BASF社、テトラプロペニルコハク酸,1,2-プロパンジオールエステル/ミネラルオイル/テトラプロペニルコハク酸の混合物)
〔参考例1-3、比較例1-5〕
基油として化合物6を用い、表1に示す組成を有する潤滑剤組成物I-Pを調製し、180℃の回転盤付恒温槽内での静置時間を様々に変化させて蒸発減量を測定した。
基油として化合物6を用い、表2に示す組成を有する潤滑剤組成物Q-Wを調製し、180℃の回転盤付恒温槽内での静置時間を様々に変化させて蒸発減量を測定した。
表3に示す組成を有する潤滑剤組成物1-12を調製した。表3に示すように、種々の基油について、アルキル化フェニルナフチルアミンのみを酸化防止剤として単独で用いた潤滑剤組成物(表3において「単独」と記載)と、アルキル化フェニルナフチルアミンと亜リン酸エステルとからなる酸化防止剤を併用した潤滑剤組成物(表3において「併用」と記載)とを調製した。それぞれの潤滑剤組成物の、180℃の回転盤付恒温槽内で16.5時間静置後の蒸発減量を測定し、アルキル化フェニルナフチルアミンと亜リン酸エステルとの併用による蒸発減量低減率を求めた。
併用による蒸発減量低減率(%)=100-100×(アルキル化フェニルナフチルアミンと亜リン酸エステルとからなる酸化防止剤を含む潤滑油組成物の16.5時間後蒸発減量/アルキル化フェニルナフチルアミンのみを酸化防止剤として含む潤滑油組成物の16.5時間後蒸発減量)
基油として化合物6を用い、表5に示す組成を有する潤滑剤組成物L、Mおよび13-24を調製し、180℃の回転盤付恒温槽内での静置時間を様々に変化させて蒸発減量を測定した。
基油として化合物5を用い、表6に示す組成を有する潤滑剤組成物A-Hを調製し、180℃の回転盤付恒温槽内での静置時間を様々に変化させて蒸発減量を測定した。
表7に示す組成を有する潤滑剤組成物25-26および33-36を調製し、180℃の回転盤付恒温槽内での静置時間を様々に変化させて蒸発減量を測定した。また、潤滑剤組成物の40℃動粘度および100℃動粘度を測定し粘度指数を求めた。
表8および表9に示す組成を有する潤滑剤組成物27-32を調製し、180℃の回転盤付恒温槽内での静置時間を様々に変化させて蒸発減量を測定した。表8に示す組成は、当該技術分野における既存の潤滑油組成物の組成である。また、得られた潤滑油組成物について、基油の65時間後分解率を測定した。また、実施例18で得られた潤滑剤組成物25および実施例24で得られた潤滑剤組成物34についても基油の65時間後分解率を測定した。
前記合成例で得られた脂肪族エーテル化合物および既存油について、粘性および低温流動性の評価を行った。
Claims (15)
- 脂肪族エーテル化合物を基油とし、酸化防止剤を含有する潤滑剤組成物であって、
前記酸化防止剤は、少なくともアルキル化フェニルナフチルアミンと亜リン酸エステルとからなり、
前記潤滑剤組成物に含有される、前記アルキル化フェニルナフチルアミンと亜リン酸エステルとの合計量が、前記基油全量に対して3~8重量%であり、
前記アルキル化フェニルナフチルアミンと亜リン酸エステルとの含有比率は、前記アルキル化フェニルナフチルアミンと亜リン酸エステルとの合計量に対して、アルキル化フェニルナフチルアミンが85~95重量%であり、亜リン酸エステルが5~15重量%であることを特徴とする潤滑剤組成物。 - 前記脂肪族エーテル化合物は、一分子中の炭素原子数が8~300であり、一分子中の酸素原子数が1~150である脂肪族エーテル化合物であることを特徴とする請求項1に記載の潤滑剤組成物。
- 前記脂肪族エーテル化合物は、2-(2-エチルヘキシルオキシ)エチルエーテル化合物であることを特徴とする請求項1または2に記載の潤滑剤組成物。
- 前記アルキル化フェニルナフチルアミンが、N-フェニル-ドデシルナフタレン-1-アミンまたはN-フェニル-オクチルナフタレン-1-アミンであることを特徴とする請求項1~4のいずれか1項に記載の潤滑剤組成物。
- 前記亜リン酸エステルが1,1,3-トリス(2-メチル-4-ジトリデシルホスファイト-5-t-ブチルフェニル)ブタンであることを特徴とする請求項1~5のいずれか1項に記載の潤滑剤組成物。
- 請求項1~6のいずれか1項に記載の潤滑剤組成物を用いた軸受油。
- 請求項1~6のいずれか1項に記載の潤滑剤組成物を用いて潤滑されることを特徴とする軸受。
- 前記軸受は、流体軸受または含浸軸受であることを特徴とする請求項8に記載の軸受。
- 請求項8または9に記載の軸受を備えていることを特徴とする、モータ。
- 軸受を、請求項1~6のいずれか1項に記載の潤滑剤組成物を用いて潤滑させることを特徴とする軸受の潤滑方法。
- グリースを製造するための、請求項1~6のいずれか1項に記載の潤滑剤組成物の使用。
- 請求項1から6のいずれか1項に記載の潤滑剤組成物を含有していることを特徴とするグリース。
- 請求項1から6のいずれか1項に記載の潤滑剤組成物を含有していることを特徴とする冷凍機油。
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- 2015-10-21 CN CN201580024611.2A patent/CN106661493B/zh active Active
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KR20160145666A (ko) | 2016-12-20 |
MY173662A (en) | 2020-02-14 |
CN106661493B (zh) | 2020-11-13 |
PH12016501767A1 (en) | 2017-01-09 |
EP3257922B1 (en) | 2019-08-07 |
CN106661493A (zh) | 2017-05-10 |
KR101819132B1 (ko) | 2018-01-16 |
EP3257922A1 (en) | 2017-12-20 |
PH12016501767B1 (en) | 2017-01-09 |
EP3257922A4 (en) | 2018-07-18 |
US9920274B2 (en) | 2018-03-20 |
US20170183598A1 (en) | 2017-06-29 |
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