WO2009119669A1 - 丸ダイス転造加工用潤滑油組成物 - Google Patents
丸ダイス転造加工用潤滑油組成物 Download PDFInfo
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- WO2009119669A1 WO2009119669A1 PCT/JP2009/055958 JP2009055958W WO2009119669A1 WO 2009119669 A1 WO2009119669 A1 WO 2009119669A1 JP 2009055958 W JP2009055958 W JP 2009055958W WO 2009119669 A1 WO2009119669 A1 WO 2009119669A1
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
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- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
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- 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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- 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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- 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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- 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
- C10M2207/126—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 monocarboxylic
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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
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
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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
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- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
- C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
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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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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbased sulfonic acid salts
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M2219/106—Thiadiazoles
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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
- C10M2223/04—Phosphate esters
- C10M2223/047—Thioderivatives not containing metallic elements
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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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- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
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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
- C10N2020/071—Branched chain compounds
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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
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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
- C10N2030/40—Low content or no content compositions
- C10N2030/41—Chlorine free or low chlorine content compositions
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/245—Soft metals, e.g. aluminum
Definitions
- the present invention relates to a lubricating oil composition for round die rolling.
- the round die rolling process is a process in which a die, which is a rolling tool, is pressed against a workpiece while rotating, and the workpiece is rotated to form.
- extremely severe processing such as screw rolling processing and gear rolling processing is performed. Therefore, the lubricating oil used for round die rolling is required to exhibit high machining performance, such as reducing tool wear and improving the surface roughness of processed products under severe lubrication conditions.
- chlorinated compounds such as chlorinated paraffins and chlorinated fatty acid esters have been widely used as effective additives for improving the processing performance under severe conditions.
- chlorinated compounds have problems in terms of safety to the human body such as carcinogenicity and environmental pollution due to the generation of dioxins during incineration of waste liquid. Therefore, the use of chlorinated compounds has been avoided. As a result, a so-called non-chlorine-based lubricating oil that does not contain a chlorine-based compound has been demanded. Therefore, the lubricating oil used for the round die rolling process is expected to have high processing performance without using a chlorine-based compound.
- round die bearings composed of non-ferrous alloys such as bronze need to continue to support the load generated by machining, and the lubricating oil used for round die rolling is usually a mechanism that also lubricates this bearing. It has become. Therefore, the lubricating oil for rolling a round die is required to have the performance of improving the lubricity in the bearing and extending the bearing life in addition to the processing performance.
- Patent Document 1 and Patent Document 2 have a description that the cutting oil can be diverted to a rolling process (Patent Document 1, paragraph [0157], Patent Document 2, paragraph [0002], etc.) reference).
- Patent Document 1 and Patent Document 2 have a description that the cutting oil can be diverted to a rolling process (Patent Document 1, paragraph [0157], Patent Document 2, paragraph [0002], etc.) reference).
- the use of lubricating oils other than those for round die rolling, such as cutting oil can provide the above-mentioned processing performance and the ability to improve the lubricity of the bearing and extend the bearing life.
- the current situation is that normal round die rolling cannot be performed continuously. Accordingly, it is expected that a lubricating oil for rolling a round die that has excellent processing performance without using a chlorine-based compound, improves lubricity in the bearing, and extends the life of the bearing can be expected.
- the present invention provides a lubricating oil composition for round die rolling that has excellent processing performance, improves lubricity in the bearing, and extends the life of the bearing without using a chlorine-based compound. It is the purpose.
- the present inventors have found that a composition obtained by combining specific compounds and blending them in specific amounts can achieve the object of the present invention.
- the present invention has been completed based on such findings.
- the base oil contains (A) (a-1) 0.5 to 40% by mass of a monoester having 13 to 48 carbon atoms and / or (a-2) an aliphatic dicarboxylic acid ester having 13 to 34 carbon atoms. 0.5-30 mass%, (B) 0.01-10 mass% thiadiazole compound, (C) 0.01-15 mass% thiophosphite, and (D) 0.01-5 mass% triazole compound.
- Lubricating oil composition for round die rolling process [2] The lubricating oil composition for round die rolling according to [1], wherein the composition has a kinematic viscosity at 40 ° C. of 3 to 80 mm 2 / s, Is to provide.
- a lubricating oil composition for rolling a round die that has excellent processing performance, improves lubricity in a bearing, and extends the life of the bearing without using a chlorine-based compound. be able to.
- the present invention provides (A) (a-1) 0.5 to 40% by mass of a monoester having 13 to 48 carbon atoms and / or (a-2) an aliphatic dicarboxylic acid ester having 13 to 34 carbon atoms. 0.5 to 30% by mass, (B) 0.01 to 10% by mass of thiadiazole compound, (C) 0.01 to 15% by mass of thiophosphite ester, and (D) 0.01 to 5% by mass of triazole derivative. It is a lubricating oil composition for round die rolling process (hereinafter sometimes simply referred to as “lubricating oil composition”).
- the base oil used in the present invention is not particularly limited, and mineral oil, fats and oils, and synthetic oils can be used.
- mineral oils include various oils such as residue oil obtained by atmospheric distillation of paraffinic crude oil, intermediate crude oil or naphthenic crude oil, or residual oil obtained by atmospheric distillation.
- a refined oil obtained by refining the distillate according to a conventional method such as solvent refined oil, hydrocracked refined oil, hydrorefined refined oil, dewaxed oil, and clay-treated oil. it can.
- fats and oils for example, beef tallow, pork tallow, soybean oil, rapeseed oil, rice bran oil, coconut oil, palm oil, palm kernel oil, sheep fat (lanolin), olive oil, tall oil, castor oil, cottonseed oil, safflower oil, Shark liver oil or hydrogenated products thereof can be used.
- Synthetic oils include, for example, poly- ⁇ -olefins having 8 to 14 carbon atoms, olefin copolymers (for example, ethylene-propylene copolymers), branched olefins such as polybutene and polypropylene, hydrides thereof, and polyols.
- Esters such as esters (fatty acid ester of trimethylolpropane, fatty acid ester of pentaerythritol, etc.), alkylbenzene, and the like can be used.
- the base oil one kind of the mineral oil may be used, two or more kinds may be used in combination, one kind of fat or oil may be used, or two or more kinds may be used in combination, and the synthetic oil May be used singly or in combination of two or more. Moreover, about 2 or more types in mineral oil, fats and oils, and synthetic oil, it can also be used combining each 1 type or more.
- the base oil preferably has a kinematic viscosity at a temperature of 40 ° C. in the range of 2 to 80 mm 2 / s.
- kinematic viscosity When the kinematic viscosity is 2 mm 2 / s or more, there is no danger of fire due to ignition, and when it is 80 mm 2 / s or less, the amount of oil taken out can be reduced, which is preferable. From the above points, a more preferable kinematic viscosity is 5 to 60 mm 2 / s.
- (a-1) a monoester having 13 to 48 carbon atoms and / or (a-2) an aliphatic dicarboxylic acid ester having 13 to 34 carbon atoms is used.
- (A-1) Examples of the monoester having 13 to 48 carbon atoms include compounds represented by the general formula (I).
- RCOOR '(I) In the formula, R represents an alkyl group having 11 to 22 carbon atoms, R ′ represents an alkyl group having 1 to 25 carbon atoms, and the total carbon number of R and R ′ is 12 to 47.
- the preferred carbon number of the monoester represented by the general formula (I) is in the range of 13 to 36.
- the monoester examples include methyl stearate, butyl stearate, octyl stearate, octyl palmitate and the like.
- butyl stearate is preferred from the viewpoint of performance and availability.
- octyl palmitate is preferred.
- the monoester may be used singly or in combination of two or more.
- the blending amount of the monoester in the lubricating oil composition is selected in the range of 0.5 to 40% by mass based on the total amount of the lubricating oil composition. If the blending amount is less than 0.5% by mass, the effect of improving the processing performance may not be sufficiently exhibited. On the other hand, if it exceeds 40% by mass, the improvement of the effect is not recognized for the blending amount, but it may be economically disadvantageous. From the above points, the preferable blending amount of the monoester is in the range of 3 to 30% by mass, and more preferably in the range of 5 to 20% by mass.
- aliphatic dicarboxylic acid ester of component (a-2) for example, an aliphatic dicarboxylic acid having 12 to 28 carbon atoms composed of a saturated or unsaturated branched hydrocarbon chain whose main skeleton is a straight chain having 1 to 6 carbon atoms.
- the diester which is a reaction product with an aliphatic alcohol is mentioned.
- the aliphatic dicarboxylic acid has less than 12 carbon atoms, the processing performance is inferior.
- the aliphatic dicarboxylic acid exceeds 28, the solubility in the base oil becomes poor.
- the carbon number is preferably 14 to 24, and more preferably 16 to 20.
- the aliphatic dicarboxylic acid preferably has a branched chain as the main skeleton. By having a branched chain, there is an advantage that the solubility of the diester in the base oil is improved and a lubricating oil composition having desired performance can be easily obtained.
- both saturated and unsaturated can be used as the aliphatic dicarboxylic acid, but saturated aliphatic dicarboxylic acid is more preferable.
- Preferred examples of the saturated aliphatic dicarboxylic acid include compounds represented by the following general formula (II).
- k is an integer of 0 to 3
- m and n are each an integer of 1 to 23
- the sum of k, m and n is an integer of 8 to 24.
- specific examples of the aliphatic dicarboxylic acid having 12 to 28 carbon atoms, the main skeleton of which is a saturated or unsaturated branched hydrocarbon chain, used for the diester as the component (a-2) include Examples thereof include compounds represented by chemical formulas.
- aliphatic alcohols having 1 to 6 carbon atoms are used. If the number of carbon atoms exceeds 6, the solubility of the diester will deteriorate. A preferable carbon number is 1 to 4.
- the aliphatic alcohol is preferably linear from the viewpoint of processing performance. Specific examples of such a linear aliphatic alcohol include methanol, ethanol, n-propanol, and n-butanol.
- the diester obtained from the aliphatic dicarboxylic acid and the aliphatic alcohol is used as the component (a-2).
- the diester may be used alone or in combination of two or more. May be used.
- the blending amount of the diester in the lubricating oil composition is selected in the range of 0.5 to 30% by mass based on the total amount of the lubricating oil composition.
- the content is less than 0.5% by mass, the effect of improving the processing performance is not sufficiently exhibited.
- the content exceeds 30% by mass, the improvement in the effect is not recognized for the amount, but it is economically disadvantageous.
- odor is generated and the working environment may be deteriorated.
- the content of the diester is preferably in the range of 1 to 20% by mass, and particularly preferably in the range of 1 to 15% by mass.
- a thiadiazole compound is used as the component (B).
- the thiadiazole-based compound used here include thiadiazoles such as 1,4,5-thiadiazole, 1,2,4-thiadiazole, 1,2,5-thiadiazole, 1,3,4-thiadiazole, and derivatives thereof. Applicable.
- the derivative include a 1,3,4-thiadiazole derivative represented by the following general formula (III), a 1,2,4-thiadiazole derivative represented by the general formula (IV), and a general formula (V). 1,4,5-thiadiazole derivatives, and 2,5-bis (N, N-dialkyldithiocarbamyl) -1,3,4-thiadiazole represented by the general formula (VI).
- R 1 to R 6 represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, preferably 1 to 14 carbon atoms.
- R 1 and R 2 , R 3 and R 4 , and R 5 and R 6 may be the same or different.
- a to f each independently represents an integer of 0 to 8, preferably 1 to 3, particularly preferably 1 or 2, and a and b, c and d, and e and f may be the same. May be different.
- R 7 and R 8 represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, preferably 1 to 9 carbon atoms. R 7 and R 8 may be the same or different.
- alkyl group represented by R 1 to R 6 in the general formulas (III) to (V) include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, and an isobutyl group.
- alkyl group represented by R 7 and R 8 in the general formula (VI) include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, and a sec-butyl group.
- Tert-butyl group various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups, various decyl groups, various undecyl groups, various dodecyl groups, and the like.
- thiadiazole derivatives include 2,5-bis (n-hexyldithio) -1,3,4-thiadiazole, 2,5-bis (n-octyldithio) -1,3,4-thiadiazole 2,5-bis (n-nonyldithio) -1,3,4-thiadiazole, 2,5-bis (1,1,3,3-tetramethylbutyldithio) -1,3,4-thiadiazole, 3, , 5-bis (n-hexyldithio) -1,2,4-thiadiazole, 3,5-bis (n-octyldithio) -1,2,4-thiadiazole, 3,5-bis (n-nonyldithio)- 1,2,4-thiadiazole, 3,5-bis (1,1,3,3-tetramethylbutyldithio) -1,2,4-thiadiazole, 4,5-bis (n-hexyldithio)
- the above thiadiazole compound is used as the component (B).
- the thiadiazole compound may be used alone or in combination of two or more.
- the blending amount of the component (B) is 0.01 to 10% by mass based on the total amount of the lubricating oil composition. If the blending amount is less than 0.01% by mass, seizure may occur in the bearing portion. On the other hand, if it exceeds 10% by mass, a significant improvement in the effect cannot be obtained, which is economically disadvantageous, and due to odor. It may worsen the environment. From such a point, the blending amount of the component (B) is preferably 0.2 to 5% by mass.
- a thiophosphite is used as the component (C).
- the thiophosphite used here include thiophosphites having a hydrocarbon group having 2 to 30 carbon atoms, preferably 4 to 20 carbon atoms.
- the hydrocarbon group having 2 to 30 carbon atoms include an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an alkenyl group, an aryl group, an alkylaryl group, and an arylalkyl group.
- alkyl group examples include, for example, an ethyl group, which are all linear or branched propyl groups, butyl groups, pentyl groups, hexyl groups, heptyl groups, octyl groups, nonyl groups, decyl groups, undecyl groups, dodecyl groups, tridecyl groups. , Tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, and octadecyl group.
- an ethyl group which are all linear or branched propyl groups, butyl groups, pentyl groups, hexyl groups, heptyl groups, octyl groups, nonyl groups, decyl groups, undecyl groups, dodecyl groups, tridecyl groups.
- Tetradecyl group pentadecyl group, hexadec
- Examples of the cycloalkyl group include cycloalkyl groups having 5 to 7 carbon atoms such as a cyclopentyl group, a cyclohexyl group, and a cycloheptyl group.
- Examples of the alkylcycloalkyl group include a methylcyclopentyl group, a dimethylcyclopentyl group, a methylethylcyclopentyl group, a diethylcyclopentyl group, a methylcyclohexyl group, a dimethylcyclohexyl group, a methylethylcyclohexyl group, a diethylcyclohexyl group, a methylcycloheptyl group, a dimethylcyclopentyl group, and the like.
- alkylcycloalkyl groups having 6 to 11 carbon atoms such as heptyl, methylethylcycloheptyl and diethylcycloheptyl.
- alkenyl group include butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, which may be linear or branched.
- alkenyl groups such as a pentadecenyl group, a hexadecenyl group, a heptadecenyl group, and an octadecenyl group.
- aryl groups such as a phenyl group and a naphthyl group, can be mentioned, for example.
- alkylaryl group for example, tolyl group, xylyl group, ethylphenyl group, propylphenyl group, butylphenyl group, pentylphenyl group, hexylphenyl group, heptylphenyl group, octylphenyl group, nonylphenyl group, decylphenyl group, Examples thereof include alkylaryl groups having 7 to 18 carbon atoms such as undecylphenyl group and dodecylphenyl group.
- arylalkyl group examples include arylalkyl groups having 7 to 12 carbon atoms such as benzyl group, phenylethyl group, phenylpropyl group, phenylbutyl group, phenylpentyl group, and phenylhexyl group.
- arylalkyl groups having 7 to 12 carbon atoms such as benzyl group, phenylethyl group, phenylpropyl group, phenylbutyl group, phenylpentyl group, and phenylhexyl group.
- these hydrocarbon groups an alkyl group, an alkenyl group, an aryl group, and an alkylaryl group are preferable from the viewpoint of performance and availability.
- the thiophosphite includes thiophosphite monoester, thiophosphite diester, and thiophosphite triester. Among these, thiophosphite triester is more preferable from the viewpoint of performance. preferable.
- thiophosphites include monobutyl phosphite, monolauryl phosphite, monooctyl phosphite, dibutyl phosphite, dilauryl phosphite, dioctyl phosphite, tributyl phosphite, trilauryl phosphite , Trioctyl phosphite, triphenyl phosphite, and the like are preferable, and tributyl phosphite, trilauryl phosphite, and trioctyl phosphite are particularly preferable.
- the thiophosphite ester is used as the component (C), but the thiophosphite ester may be used alone or in combination of two or more.
- the amount of component (C) is in the range of 0.01 to 15% by mass based on the total amount of the lubricating oil composition. If the blending amount is less than 0.1% by mass, the processing performance may be insufficiently improved. On the other hand, if it exceeds 15% by mass, a significant effect cannot be expected, which is economically undesirable. In addition, odor is generated and the working environment may be deteriorated.
- the amount of component (C) is more preferably 0.05 to 10% by mass.
- a triazole compound is used as the component (D).
- the triazole compound used here include benzotriazole represented by the following general formula (VII) and derivatives thereof.
- the derivatives include alkylbenzotriazoles represented by the following general formula (VIII), N-alkylbenzotriazoles represented by the general formula (IX), and N- (alkyl) aminos represented by the general formula (X). Including alkylbenzotriazole.
- R 9 represents an alkyl group having 1 to 4 carbon atoms, preferably an alkyl group having 1 or 2 carbon atoms. Specific examples include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, and a tert-butyl group.
- g represents a number of 1 to 3, preferably 1 or 2.
- R 10 and R 11 each represent an alkyl group having 1 to 4 carbon atoms, preferably an alkyl group having 1 or 2 carbon atoms. Is specifically the same as illustrative of the R 9. h is a number from 0 to 3, preferably 0 or 1. When there are a plurality of R 10 and R 11 , they may be the same as or different from each other.
- R 12 represents an alkyl group having 1 to 4 carbon atoms, preferably an alkyl group having 1 or 2 carbon atoms. Specifically, it is the same as the illustration of R 1 .
- R 13 represents a methylene group or an ethylene group, and a methylene group is particularly preferable.
- R 14 and R 15 each independently represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, preferably a hydrogen atom or an alkyl group having 1 to 9 carbon atoms.
- i is a number from 0 to 3, preferably 0 or 1.
- the above-mentioned triazole compound is used as the component (D), but the triazole compound may be used alone or in combination of two or more.
- the blending amount of the component (D) is in the range of 0.001 to 5% by mass based on the total amount of the lubricating oil composition. If the blending amount is less than 0.001% by mass, the effect of extending the bearing life may not be sufficiently exhibited. On the other hand, if it exceeds 5% by mass, a significant improvement in the effect cannot be obtained, which is economically disadvantageous. . Therefore, the amount of component (D) is preferably 0.005 to 3% by mass.
- the present invention is obtained by blending each of the above components (A) to (D) with a base oil, and further, for example, within a range that does not impair the object of the present invention, if desired.
- Various additives such as an antioxidant, a corrosion inhibitor, and an antifoaming agent can be blended.
- the antiwear agent include metal thiophosphates such as zinc dialkyldithiophosphate.
- antioxidants examples include phenolic antioxidants such as 2,6-di-tert-butyl-4-methylphenol and 4,4′-methylenebis (2,6-di-tert-butylphenol), phenyl- Examples include amine-based antioxidants such as ⁇ -naphthylamine and 4,4′-dioctyldiphenylamine.
- rust inhibitor and corrosion inhibitor examples include fatty acid, alkenyl succinic acid half ester, fatty acid soap, alkyl sulfonate, fatty acid amine, oxidized paraffin, alkyl polyoxyethylene ether, and the like.
- antifoaming agent examples include dimethylpolysiloxane and polyacrylate. These additives can be used individually by 1 type or in mixture of 2 or more types. Further, the amount of these additives is usually in the range of 0.0001 to 10% by mass on the basis of the composition.
- the composition of the present invention preferably has a kinematic viscosity at 40 ° C. of 3 to 80 mm 2 / s.
- a kinematic viscosity at 40 ° C. of the composition is 3 mm 2 / s or more, good processing performance is exhibited and the bearing life can be extended.
- kinematic viscosity is 80 mm ⁇ 2 > / s or less, the amount of oil carried away by processing can be suppressed and the consumption loss of an oil agent can be reduced.
- Thread rolling process test (test equipment and test conditions) Rolling processing machine; “A22B” manufactured by Nissei Co., Ltd.
- Bearing material CAC702 (ALBC-2) (aluminum bronze) Dice; SKD-11 (Daido Special Steel “DC-53")
- Processing material S45C and SUS304 Processed part shape: Hollow screw (M16, pitch 1.5, screw length 15 mm) Die rotation speed: 400rpm Lubricating oil application method; shower processing quantity: 100,000 pieces (evaluation method) The following evaluation was performed on dies, bearings, and processed products (screws) after processing 100,000 pieces.
- Die wear Die diameter reduction ( ⁇ m) Bearing seizure presence / absence; visual observation Threaded surface condition; appearance was visually inspected and evaluated based on the following evaluation criteria. 10 is the best and 1 is the worst.
- compositions of the present invention have good performance in all aspects. These are superior to at least the die wear amount, bearing seizure, processed surface condition, and the like as compared with the lubricating oil of Comparative Example 1 containing a chlorine-based compound. Also, the lubricating oils of Comparative Examples 2 to 7 are inferior in performance and do not have performance as lubricating oil for round die rolling.
- the lubricating oil composition for round die rolling processing of the present invention has excellent processing performance without using a chlorinated compound, and can improve the lubricity in the bearing and extend the bearing life. Therefore, it is possible to carry out a round die rolling process, which is a difficult processing method, satisfactorily and efficiently, without affecting the human body or causing environmental pollution.
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Abstract
Description
したがって、丸ダイス転造加工に用いられる潤滑油には、過酷な潤滑条件下において、工具摩耗を低減し、加工製品の面粗さを良好にするなど、高い加工性能を発現することが要求される。
ところで、金属加工用潤滑油の分野では、過酷な条件における加工性能を高める有効な添加剤として塩素化パラフィンや塩素化脂肪酸エステルなどの塩素系化合物が広く使用されてきた。しかし、近年、塩素系化合物は、発癌性など人体への安全性や、廃液の焼却時にダイオキシンが発生し環境汚染の面で問題があると指摘された。そのため塩素系化合物の使用が敬遠されてきた。その結果として塩素系化合物を配合しない、いわゆる非塩素系潤滑油が求められるようになった。
したがって、丸ダイス転造加工に用いられる潤滑油は、塩素系化合物を使用することなく、高い加工性能を有することが期待されている。
したがって、丸ダイス転造加工用潤滑油は、前記加工性能と共に、軸受における潤滑性を高め、軸受寿命を延長する性能を有することも要求される。
しかしながら、切削油など丸ダイス転造加工用潤滑油以外の潤滑油を使用したのでは、上記した加工性能を有すると共に、軸受における潤滑性を高め、軸受寿命を延長する性能を具備することができなく、正常な丸ダイス転造加工を継続して行うことができないのが現状である。
したがって、塩素系化合物を用いないで、優れた加工性能を有すると共に、軸受における潤滑性を高め、軸受寿命を延長できる丸ダイス転造加工用潤滑油の出現が期待されている。
〔1〕基油に、(A)(a-1)炭素数13~48のモノエステル0.5~40質量%及び/又は(a-2)炭素数13~34の脂肪族ジカルボン酸エステル0.5~30質量%、(B)チアジアゾール化合物0.01~10質量%、(C)チオ亜リン酸エステル0.01~15質量%、及び(D)トリアゾール化合物0.01~5質量%を配合してなる丸ダイス転造加工用潤滑油組成物、
〔2〕組成物の40℃における動粘度が,3~80mm2/sである前記〔1〕に記載の丸ダイス転造加工用潤滑油組成物、
を提供するものである。
また、合成油としては、例えば、炭素数8~14のポリ-α-オレフィン、オレフィンコポリマー(例えば、エチレン-プロピレンコポリマーなど)、あるいはポリブテン、ポリプロピレン等の分岐オレフィンやこれらの水素化物、さらにはポリオールエステル(トリメチロールプロパンの脂肪酸エステル、ペンタエリスリトールの脂肪酸エステルなど)等のエステル系化合物、アルキルベンゼン等を用いることができる。
そして、該基油としては、温度40℃における動粘度が、2~80mm2/sの範囲にあるものが好ましい。この動粘度が2mm2/s以上であると、引火による火災の危険性がなく、一方、80mm2/s以下であると、油剤持出量を減少することができて好ましい。以上の点から、より好ましい動粘度は、5~60mm2/sである。
(a-1)炭素数13~48のモノエステルとしては、例えば一般式(I)で表される化合物を挙げることができる。
RCOOR’ …(I)
式中、Rは炭素数11~22のアルキル基、R’は炭素数1~25のアルキル基を示し、RとR’の合計炭素数は12~47である。
前記一般式(I)で表されるモノエステルの好ましい炭素数は13~36の範囲である。該モノエステルの具体例としては、ステアリン酸メチル、ステアリン酸ブチル、ステアリン酸オクチル、パルミチン酸オクチルなどが好ましく挙げられるが、これらの中で、性能及び入手の容易さなどの点から、ステアリン酸ブチル及びパルミチン酸オクチルが好ましい。
該脂肪族ジカルボン酸の炭素数が12未満のものでは、加工性能が劣り、一方28を超えるものは、基油に対する溶解性が悪くなる。好ましい炭素数は14~24であり、さらには16~20が好ましい。
また、該脂肪族ジカルボン酸は主骨格として分岐鎖を有することが好ましい。分岐鎖を有することにより、ジエステルの基油に対する溶解性が良くなり、所望の性能を有する潤滑油組成物が容易に得られるという利点がある。
本発明においては、前記脂肪族ジカルボン酸として、飽和及び不飽和のいずれも用いることができるが、飽和脂肪族ジカルボン酸がより好ましい。この飽和脂肪族ジカルボン酸としては、例えば下記一般式(II)で表される化合物を好ましく挙げることができる。
本発明において、(a-2)成分であるジエステルに用いられる、主骨格が飽和又は不飽和の分岐状炭化水素鎖からなる炭素数12~28の脂肪族ジカルボン酸の具体例としては、下記の化学式で表される化合物などを挙げることができる。
このような直鎖状脂肪族アルコールの具体例としては、メタノール、エタノール、n-プロパノール、n-ブタノールなどを挙げることができる。
ここで用いられるチアジアゾール系化合物としては、1,4,5-チアジアゾール、1,2,4-チアジアゾール、1,2,5-チアジアゾール、1,3,4-チアジアゾールなどのチアジアゾール、及びこれの誘導体が該当する。
該誘導体としては、下記一般式(III)で表される1,3,4-チアジアゾール誘導体、一般式(IV)で表される1,2,4-チアジアゾール誘導体及び一般式(V)で表される1,4,5-チアジアゾール誘導体、並びに一般式(VI)で表される2、5-ビス(N,N-ジアルキルジチオカルバミル)-1、3、4-チアジアゾールを含むものである。
ここで用いられるチオ亜リン酸エステルとしては、例えば、炭素数2~30、好ましくは4~20の炭化水素基を有するチオ亜リン酸エステルが挙げられる。
上記炭素数2~30の炭化水素基としては、アルキル基、シクロアルキル基、アルキルシクロアルキル基、アルケニル基、アリール基、アルキルアリール基、及びアリールアルキル基を挙げることができる。
アルキル基としては、例えば、エチル基、いずれも直鎖又は分岐状のプロピル基、ブチル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基、ウンデシル基、ドデシル基、トリデシル基、テトラデシル基、ペンタデシル基、ヘキサデシル基、ヘプタデシル基、及びオクタデシル基などを挙げることができる。
シクロアルキル基としては、例えば、シクロペンチル基、シクロヘキシル基、及びシクロヘプチル基等の炭素数5~7のシクロアルキル基を挙げることができる。
アルキルシクロアルキル基としては、例えば、メチルシクロペンチル基、ジメチルシクロペンチル基、メチルエチルシクロペンチル基、ジエチルシクロペンチル基、メチルシクロヘキシル基、ジメチルシクロヘキシル基、メチルエチルシクロヘキシル基、ジエチルシクロヘキシル基、メチルシクロヘプチル基、ジメチルシクロヘプチル基、メチルエチルシクロヘプチル基、及びジエチルシクロヘプチル基等の炭素数6~11のアルキルシクロアルキル基を挙げることができる。
アルケニル基としては、例えば、いずれも直鎖状でも分枝状でもよいブテニル基、ペンテニル基、ヘキセニル基、ヘプテニル基、オクテニル基、ノネニル基、デセニル基、ウンデセニル基、ドデセニル基、トリデセニル基、テトラデセニル基、ペンタデセニル基、ヘキサデセニル基、ヘプタデセニル基、及びオクタデセニル基等のアルケニル基を挙げることができる。
アリール基としては、例えば、フェニル基、ナフチル基等のアリール基を挙げることができる。
アルキルアリール基としては、例えば、トリル基、キシリル基、エチルフェニル基、プロピルフェニル基、ブチルフェニル基、ペンチルフェニル基、ヘキシルフェニル基、ヘプチルフェニル基、オクチルフェニル基、ノニルフェニル基、デシルフェニル基、ウンデシルフェニル基、及びドデシルフェニル基等の炭素数7~18のアルキルアリール基を挙げることができる。
アリールアルキル基としては、例えば、ベンジル基、フェニルエチル基、フェニルプロピル基、フェニルブチル基、フェニルペンチル基、フェニルヘキシル基等の炭素数7~12のアリールアルキル基等を挙げることができる。
これらの炭化水素基の中でも、アルキル基、アルケニル基、アリール基及びアルキルアリール基が性能及び入手性の点から好ましい。
ここで用いられるトリアゾール化合物としては、例えば、下記一般式(VII)で表されるベンゾトリアゾール及びこれの誘導体が該当する。該誘導体としては、下記一般式(VIII)で表されるアルキルベンゾトリアゾール、一般式(IX)で表されるN-アルキルベンゾトリアゾール、及び一般式(X)で表されるN-(アルキル)アミノアルキルベンゾトリアゾールを含むものである。
本発明においては、(D)成分として、前記のトリアゾール化合物が用いられるが、該トリアゾール化合物は一種を単独で用いてもよく、二種以上を組み合わせて用いてもよい。また、該(D)成分の配合量は、潤滑油組成物全量基準で、0.001~5質量%の範囲である。配合量が0.001質量%未満では、軸受寿命を延長する効果が充分に発現しないことがあり、一方、5質量%を超えても著しい効果の向上が得られず、経済的に不利である。したがって(D)成分の配合量は0.005~3質量%が好ましい。
耐摩耗剤としては、例えば、ジアルキルジチオリン酸亜鉛などのチオリン酸金属塩が挙げられる。
酸化防止剤としては、例えば、2,6-ジ-tert-ブチル-4-メチルフェノール、4,4’-メチレンビス(2,6-ジ-tert-ブチルフェノール)などのフェノール系酸化防止剤、フェニル-α-ナフチルアミン、4,4’-ジオクチルジフェニルアミンなどのアミン系酸化防止剤が挙げられる。
防錆剤及び腐食防止剤としては、例えば、脂肪酸、アルケニルコハク酸ハーフエステル、脂肪酸セッケン、アルキルスルホン酸塩、脂肪酸アミン、酸化パラフィン、アルキルポリオキシエチレンエーテル等が挙げられる。
消泡剤としては、例えばジメチルポリシロキサン,ポリアクリレート等が挙げられる。
これらの添加剤は、それぞれ一種を単独で、又は二種以上を混合して使用することができる。また、これらの添加剤の配合量は、通常、それぞれ組成物基準で0.0001~10質量%の範囲で配合される。
評価方法
(1)ファレックス(Falex)摩耗試験
(試験条件)
ピン材質 ;AISI3135(AISI1137)
ブロック材質;CAC702(ALBC-2)(アルミ青銅)
回転数 ;290rpm
油温 ;50℃
(評価方法)
ブロックの摩耗量(mg)を測定して評価した。
(2)SHELL EP試験
ASTM D 2783に準拠して行い、極圧性を溶着荷重(LNL N)で表した。
(試験装置及び試験条件)
転造加工機 ;株式会社ニッセー製「A22B」
軸受の材質 ;CAC702(ALBC-2)(アルミ青銅)
ダイス ;SKD-11(大同特殊鋼製「DC-53」)
加工材料 ;S45C、及びSUS304
加工部品形状 ;中空ネジ(M16、ピッチ1.5、ねじ長さ15mm)
ダイス回転数 ;400rpm
潤滑油塗布方法;シャワー
加工数量 ;100000個
(評価方法)
100000個加工後のダイスおよび軸受及び加工品(ねじ)について、以 下の評価を行った。
ダイス摩耗 ;ダイス直径減少量(μm)
軸受けの焼付き有無;目視観察
ねじ加工面状態 ;外観を目視検査し、下記の評価基準に基づいて評価し た。10が最良、1が最悪である。
〈加工面状態の評価基準〉
10 : 鏡面に変色なし
9 : 鏡面にわずかな変色(色ムラあり)
8 : 鏡面に明らかな変色(色ムラ小)
7 : 鏡面に黒色に変色(色ムラ大)
6 : 歯底面にわずかな剥離
5 : 歯底面に剥離小
4 : 歯底面に剥離大
3 : 面荒れわずか
2 : 面荒れ小
1 : 面荒れ大、歯のトップに亀裂有
ねじ精度 :ねじ有効径(mm)
第1表に示すように、基油に、各添加剤成分を配合して油組成物を得、上記方法によって評価した。その結果を第1表に示す。
*1:ブチルステアレート(日本油脂製)
*2:岡村製油製「IPU」、7、12-ジメチル-7、11オクタジエン- 1、18-ジカルボン酸ジメチル
*3:大日本インキ製「ダイルーブR-100」、硫黄分33.5wt%
2,5-ビス-(n-ノニルジチオ)-1,3,4-チアジアゾール
*4:城北化学製「JPS-312」、トリラウリルトリチオホスファイト
*5:チバガイギー社製「REOMET39」、n-アルキルベンゾトリアゾール
*6:塩素含有量45質量%
*7:WITCO社製「Bryton C-500」、カルシウムスルホネート
*8:オロナイトジャパン社製「OLOA267」
*9:パラフィン系鉱油(出光興産株式会社製)
*10:塩素量4.6質量%、カルシウム量0.6質量%の切削油
Claims (2)
- 基油に、(A)(a-1)炭素数13~48のモノエステル0.5~40質量%及び/又は(a-2)炭素数13~34の脂肪族ジカルボン酸エステル0.5~30質量%、(B)チアジアゾール化合物0.01~10質量%、(C)チオ亜リン酸エステル0.01~15質量%、及び(D)トリアゾール化合物0.01~5質量%を配合してなる丸ダイス転造加工用潤滑油組成物。
- 組成物の40℃における動粘度が,3~80mm2/sである請求項1に記載の丸ダイス転造加工用潤滑油組成物。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009801121918A CN101981168A (zh) | 2008-03-28 | 2009-03-25 | 圆形塑模滚轧成形加工用润滑油组合物 |
| JP2010505730A JP5501955B2 (ja) | 2008-03-28 | 2009-03-25 | 丸ダイス転造加工用潤滑油組成物 |
| US12/934,402 US8835365B2 (en) | 2008-03-28 | 2009-03-25 | Lubricating oil composition for rolling with round die |
| KR1020107021261A KR101486112B1 (ko) | 2008-03-28 | 2009-03-25 | 둥근 다이스 전조 가공용 윤활유 조성물 |
| US14/303,113 US9200231B2 (en) | 2008-03-28 | 2014-06-12 | Lubricating oil composition for rolling with round die |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-088244 | 2008-03-28 | ||
| JP2008088244 | 2008-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/934,402 A-371-Of-International US8835365B2 (en) | 2008-03-28 | 2009-03-25 | Lubricating oil composition for rolling with round die |
| US14/303,113 Continuation US9200231B2 (en) | 2008-03-28 | 2014-06-12 | Lubricating oil composition for rolling with round die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009119669A1 true WO2009119669A1 (ja) | 2009-10-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2009/055958 Ceased WO2009119669A1 (ja) | 2008-03-28 | 2009-03-25 | 丸ダイス転造加工用潤滑油組成物 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US8835365B2 (ja) |
| JP (1) | JP5501955B2 (ja) |
| KR (1) | KR101486112B1 (ja) |
| CN (2) | CN104694211A (ja) |
| TW (1) | TW201005082A (ja) |
| WO (1) | WO2009119669A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013018624A1 (ja) * | 2011-07-29 | 2013-02-07 | 出光興産株式会社 | 転造加工用潤滑油及び転造加工方法 |
| WO2021193869A1 (ja) * | 2020-03-27 | 2021-09-30 | 出光興産株式会社 | 潤滑油組成物 |
| WO2023095853A1 (ja) * | 2021-11-26 | 2023-06-01 | 出光興産株式会社 | 潤滑油組成物 |
| KR102748623B1 (ko) | 2024-06-07 | 2024-12-31 | 차명길 | 리드스크류 나사산 전조 가공방법 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101486112B1 (ko) * | 2008-03-28 | 2015-01-23 | 이데미쓰 고산 가부시키가이샤 | 둥근 다이스 전조 가공용 윤활유 조성물 |
| JP5809090B2 (ja) * | 2012-03-21 | 2015-11-10 | Jx日鉱日石エネルギー株式会社 | 工作機械用潤滑油組成物 |
| JP6292569B2 (ja) * | 2013-12-04 | 2018-03-14 | 協同油脂株式会社 | 等速ジョイント用グリース組成物及びそのグリース組成物を封入した等速ジョイント |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20110118158A1 (en) | 2011-05-19 |
| US20140296116A1 (en) | 2014-10-02 |
| CN101981168A (zh) | 2011-02-23 |
| KR101486112B1 (ko) | 2015-01-23 |
| US9200231B2 (en) | 2015-12-01 |
| JPWO2009119669A1 (ja) | 2011-07-28 |
| JP5501955B2 (ja) | 2014-05-28 |
| TW201005082A (en) | 2010-02-01 |
| US8835365B2 (en) | 2014-09-16 |
| KR20100129747A (ko) | 2010-12-09 |
| CN104694211A (zh) | 2015-06-10 |
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