WO2007132601A1 - (メタ)アクリルアミドの製造方法 - Google Patents
(メタ)アクリルアミドの製造方法 Download PDFInfo
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- WO2007132601A1 WO2007132601A1 PCT/JP2007/057436 JP2007057436W WO2007132601A1 WO 2007132601 A1 WO2007132601 A1 WO 2007132601A1 JP 2007057436 W JP2007057436 W JP 2007057436W WO 2007132601 A1 WO2007132601 A1 WO 2007132601A1
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- meth
- acrylamide
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/22—Separation; Purification; Stabilisation; Use of additives
- C07C231/24—Separation; Purification
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/02—Amides, e.g. chloramphenicol or polyamides; Imides or polyimides; Urethanes, i.e. compounds comprising N-C=O structural element or polyurethanes
Definitions
- the present invention relates to a method for producing (meth) acrylamide. More specifically, the present invention relates to a method for producing (meth) acrylamide in which (meth) acrylonitrile is hydrated and reacted with a microbial catalyst containing nitrile hydratase in an aqueous medium.
- (Meth) acrylamide is a useful compound as a raw material for (meth) acrylamide polymers, and in particular, acrylamide polymers are widely used as paper strength enhancers, flocculants and the like.
- acrylamide Is preferably supplied as a 40 to 60% by weight aqueous solution or crystalline product
- methacrylamide is preferably supplied as a 10 to 20% by weight aqueous solution or crystalline product.
- Patent Document 1 International Publication No. 2003Z033716 Pamphlet
- An object of the present invention is to provide a method for producing (meth) acrylamide using a microbial catalyst containing nitrile hydratase, which can simplify the production process and reduce production costs. I will.
- the method for producing (meth) acrylamide according to the present invention includes:
- the concentration of (meth) acrylamide in the reaction solution (I) obtained in step (a) is 2 to 20% by weight higher than the concentration of (meth) acrylamide in the aqueous solution (II) obtained in step (b). This is a method for producing (meth) acrylamide.
- step (a) (meth) acrylonitrile is hydrated with a microbial catalyst containing -tolylhydratase in an aqueous medium to obtain a (meth) acrylamide reaction liquid (I).
- the aqueous medium used in the present invention is water; or buffering agents such as phosphates, inorganic salts such as sulfates and carbonates, alkali metal hydroxides, amides, etc.
- An aqueous solution in which is dissolved at an appropriate concentration is dissolved at an appropriate concentration.
- the aqueous medium includes the aqueous medium in these aqueous solutions.
- Methods for removing impurities from (meth) acrylonitrile power include, for example, distillation purification, washing with an aqueous alkali solution, methods for removing impurities with ion exchange resins such as cation exchange resin, cation exchange resin, For example, a method of removing impurities with activated carbon may be used.
- ion exchange resins such as cation exchange resin, cation exchange resin
- a method of removing impurities with activated carbon may be used.
- (meth) acrylamide can be obtained more efficiently.
- (Meth) acrylonitrile may be used as it is, or may be dissolved or mixed in water and used in the hydration reaction.
- the microorganism containing -tolyl hydratase used in the present invention is not particularly limited as long as it is a microorganism producing nitrile hydratase.
- the nitrile hydratase is an enzyme having an ability to hydrate a tolyl compound such as atari mouth nitrile to produce a corresponding amido compound such as acrylamide.
- microorganism examples include the genus Nocardia, the genus Corynebata, the genus Bacillus, the thermophilic Bacillus, the genus Pseudomonas, the Micrococcus (Micrococcus).
- Rhodococcus genus represented by the Rhodochrous species, Acinetobacter genus, Xanthobacter genus, Streptomyces genus, Rhizobium genus, (Klebsiella), Enterobacter, Erwinia, Aeromonas, Citrobacter, Achro mobacter, Agronocterium (Agrobacterium), microorganisms belonging to the genus Pseudonocardia typified by the thermophila species, etc.
- the These microorganisms may be used alone or in combination of two or more.
- the microorganism includes a transformant in which the -tolylhydratase gene cloned from the microorganism is expressed in an arbitrary host.
- the arbitrary host mentioned here includes Escherichia coli; Bacillus subtilis such as Bacillus subtilis; other microbial strains such as yeast and actinomycetes.
- MT-10822 this strain is Tsukuba Satohi 1-3 1-3 Tsukuba, Ibaraki, Japan, Institute of Biotechnology, Institute of Industrial Science and Technology, Ministry of International Trade and Industry, February 7, 1996. (Present: National Institute of Advanced Industrial Science and Technology, Patent Biological Depositary) under the deposit number FERM BP-5785, deposited under the Budapest Treaty on the International Approval of Deposits of Microorganisms in Patent Procedures) Can be mentioned.
- one or more amino acids constituting the enzyme are replaced, deleted, deleted or inserted with other amino acids to improve acrylamide resistance, acrylonitrile resistance and temperature resistance.
- the transformant expressing the mutant-tolyl hydratase is also included in the microorganism referred to in the present invention.
- the microbial catalyst containing -tolyl hydratase used in the present invention includes, in addition to microbial cells obtained by culturing the above-mentioned microorganisms, extracts of the microbial cells, and microbial bacteria described above.
- a body isolate, the extract, or a post-isolate obtained by separating and purifying a fraction of -tolylhydratase activity of the ground product, the microbial cell, the extract of the cell, and the ground product of the cell
- a treated product of a microbial cell such as a fixed product obtained by fixing the separated product on a suitable carrier is also included.
- the microbial catalyst may be a microbial catalyst that dissolves in an aqueous solution or a solid substance fixed on a carrier. One of these may be used, or two or more may be used at the same time, or may be used alternately.
- the microbial catalyst containing -tolylhydratase includes a mixed solution containing at least one of them, a solution such as a buffer solution, and a suspension containing at least one of these. The use form of these microbial catalysts may be appropriately selected depending on the stability of the nitrile hydratase, the production scale, and the like.
- the microorganism as described above may be prepared by a known method. For example, after inoculating the microorganism in a liquid medium such as LB medium or M9 medium, an appropriate culture temperature (usually 20 ° C to 50 ° C is higher than 50 ° C in the case of force thermophilic bacteria. ) And then the fine It is obtained by separating and recovering the organism from the culture solution by centrifugation.
- a liquid medium such as LB medium or M9 medium
- an appropriate culture temperature usually 20 ° C to 50 ° C is higher than 50 ° C in the case of force thermophilic bacteria.
- the fine It is obtained by separating and recovering the organism from the culture solution by centrifugation.
- step (a) the (meth) acrylonitrile is hydrated with the microbial catalyst in the aqueous medium to obtain a (meth) acrylamide reaction liquid (I) having a desired concentration.
- This hydration reaction can be carried out as follows.
- the concentration of (meth) acrylonitrile is not particularly limited as long as the (meth) acrylamide reaction liquid (I) having a desired concentration is obtained, and the upper limit of the concentration is not particularly limited.
- the supply of a large excess of (meth) acrylonitrile requires a large amount of catalyst to complete the reaction, a reactor having an excessive volume, an excessive heat exchanger for heat removal, etc. The economic burden in the country will increase.
- the supply amount of (meth) acrylonitrile is, in the case of acrylonitrile, when all of the acrylonitrile becomes the corresponding acrylamide, the reaction liquid (I
- acrylonitrile is 0.4 to 4 parts by weight per 1 part by weight of the aqueous medium. 1. It is preferable to add in the range of 5 parts by weight.
- the amount of the microbial catalyst used may be determined appropriately depending on the reaction conditions, the type of catalyst, and the form thereof, as long as the (meth) acrylamide reaction solution (I) having a desired concentration is obtained.
- the dry cell weight it is usually 10 to 50000 ppm by weight, preferably 50 to 30000 ppm by weight, based on the aqueous medium.
- the reaction time in the hydration reaction is not particularly limited as long as the (meth) acrylamide reaction liquid (I) having a desired concentration can be obtained. Specifically, the reaction time depends on conditions such as the amount of catalyst used and temperature, but is usually in the range of 1 to 80 hours, preferably in the range of 2 to 40 hours per reactor. is there.
- the hydration reaction is usually performed at normal pressure.
- the (meth) acrylonitrile is mixed with an aqueous medium. You may carry out under pressure in order to raise a solubility.
- the reaction temperature is not particularly limited as long as it is above the freezing point of the aqueous medium, but it is usually 0 to 50 ° C, preferably 10 to 40 ° C.
- the pH of the aqueous medium in the hydration reaction is not particularly limited, and it is preferably in the range of pH 6 to 10, more preferably in the range of pH 7 to 9, as long as the activity of -tolyl hydratase is maintained. It is desirable that The hydration reaction may be selected from reaction systems such as a suspension bed, a fixed bed, a fluidized bed, etc., depending on the catalyst type that can be carried out either batchwise or continuously. You can combine reaction methods.
- a (meth) acrylamide reaction liquid (I) is obtained by such a hydration reaction.
- this reaction solution (I) in addition to (meth) acrylamide, an aqueous medium, the dissolved microbial catalyst, and in some cases, the microbial catalyst fixed on a carrier, solid matter such as mortality of bacterial cells, and the like. included
- the concentration of (meth) acrylamide in the reaction solution (I) obtained in step (a) is usually 42 to 80% by weight for acrylamide and usually 12 to 40% by weight for methacrylamide.
- step (b) impurities are removed from the mixture obtained in the step (a) to obtain a (meth) acrylamide aqueous solution ( ⁇ ).
- Examples of the impurities include dissolved microbial catalyst; the microbial catalyst fixed on a carrier; solid matter such as mortality of bacterial cells.
- the reaction solution (I) is contacted with activated carbon under acidic conditions, and then the activated carbon is removed.
- activated carbon Is preferably used.
- an aqueous solution for pH adjustment is added to the (meth) acrylamide reaction solution, and when activated carbon is removed by filtration, washing water is added to the (meth) acrylamide reaction solution.
- step (b) the concentration of (meth) acrylamide is reduced.
- filtration centrifugation, membrane separation, ion-exchange resin or the like may be used to remove the solid matter.
- concentration of (meth) acrylamide decreases in step (b).
- an aqueous (meth) talamide solution (II) from which impurities have been removed from the reaction solution (I) obtained in step (a) is obtained.
- the aqueous solution (II) obtained in this step (b) is converted into (meth) acrylic acid.
- the concentration of (meth) acrylamide in the aqueous solution (ii) obtained in step (b) is usually 40 to 60% by weight for acrylamide and usually 10 to 20% for methacrylamide. %.
- the concentration of (meth) acrylamide in the reaction solution or aqueous solution can be measured using a conventional method such as a high performance liquid chromatographic method, a gas chromatographic method, a refractometer, etc. In the book, it is measured by a high performance liquid chromatographic method as in the examples.
- the concentration of (meth) acrylamide in the reaction solution (I) obtained in step (a) is such that the (meth) acrylamide in the aqueous solution (II) obtained in step (b). It is characterized by being 2 to 20% by weight more than the concentration of. That is, in the step (a), a reaction solution (I) containing a large amount of (meth) acrylamide is produced. For this reason, in step (b), the concentration of (meth) acrylamide in the reaction solution is reduced by filtration or the like.
- the aqueous solution (II) obtained in step (b) is further distilled into water, etc. Even if the water removal step is not carried out, it can be suitably used as a final product of an aqueous solution, and in the case of a crystalline product, as a crystallization stock solution.
- the produced (meth) acrylamide aqueous solution (II) may be further purified, for example, by performing steps such as concentration, ion exchange, crystallization, and activated carbon treatment.
- (meth) acrylamide obtained in the present invention, (meth) acrylamide can be homopolymerized or copolymerized, or the (meth) acrylamide can be copolymerized with other monomers.
- Unsaturated carboxylic acids such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid and their salts;
- Alkyaminoalkyl esters of (meth) acrylic acid such as N, N-dimethylaminoethyl methacrylate, N, N-jetylaminoethyl methacrylate, N, N-dimethylaminoethyl acrylate, or those
- a quaternary ammonia derivative of N—N-dialkylaminoalkyl (meth) acrylamides such as N—N-dimethylaminopropylmethacrylamide, N, N-dimethylaminopropylatallamide, or their quaternary ammonium derivatives;
- Hydrophilic properties such as acetone acrylamide, N, N-dimethylacrylamide, N, N-dimethylmethacrylamide, N-ethylmethacrylamide, N-ethylacrylamide, N, N-jetylacrylamide, N-propylacrylamide Acrylamide;
- Methoxypolyethyleneglycol (meth) atalylate N-Buyl-2-pyrrolidone
- N N-di-n-propylacrylamide, N-n-butylacrylamide, N-n xylacrylamide, N-n xylmethacrylamide, N N-alkyl (meth) acrylamide derivatives such as —n—octylacrylamide N—n—octylmethacrylamide, N—tert—octylacrylamide, N—dodecyl acrylamide, N—n—dodecyl methacrylamide;
- N- ( ⁇ -glycidoxyalkyl) (meth) acrylamide derivatives such as 5-glycidoxypentyl) acrylamide and N- (6-glycidoxyhexyl) acrylamide;
- Method such as methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, lauryl (meth) acrylate, 2-ethyl hexyl (meth) acrylate, glycidyl (meth) acrylate Attalylate derivatives;
- olefins such as acrylonitrile, metatitol-tolyl, butyl acetate, butyl chloride, vinylidene chloride, ethylene, propylene and butene, styrene, ⁇ -methylol styrene, butadiene and isoprene.
- These monomers may be used alone or in combination of two or more. Further, allylamide and methacrylamide may be copolymerized with these other monomers.
- the amount of monomer is usually 100 mol or less, preferably 50 mol or less, per 100 mol of (meth) acrylamide.
- the method for producing the acrylamide polymer is not particularly limited, and aqueous solution polymerization using a force radical polymerization initiator carried out by a known method such as aqueous solution polymerization or emulsion polymerization is preferably used.
- aqueous solution polymerization it is usually preferable that the total concentration of (meth) acrylamide and the monomer added as necessary is 5 to 90% by weight.
- a radical polymerization initiator for example, a radical polymerization initiator is used.
- a peroxide such as potassium persulfate, ammonium persulfate, hydrogen peroxide, benzoyl peroxide; -Tolyl, 2, 2'-azobis (4amidinopropane) dihydrochloride, 4, 4'-azobis (sodium 4-cyanovaleric acid) and other free radical initiators;
- redox catalysts that are used in combination with a reducing agent such as sodium sulfite, triethanolamine, and ferrous sulfate ammonium.
- the above polymerization initiators may be used singly or in combination with two or more.
- the amount of the polymerization initiator is usually in the range of 0.001 to 5% by weight based on the total weight of the monomers.
- the polymerization temperature is usually in the range of 10 to 120 ° C, more preferably in the range of 0 to 90 ° C.
- the polymerization temperature need not always be kept constant, and may be changed as the polymerization progresses. However, normally, the polymerization temperature tends to increase as the polymerization proceeds. Therefore, it may be cooled as necessary.
- the atmosphere during the polymerization is not particularly limited, but from the viewpoint of promptly proceeding the polymerization, for example, the polymerization is preferably performed in an inert gas atmosphere such as nitrogen gas.
- the polymerization time is not particularly limited, but is usually in the range of 1 to 20 hours.
- the pH of the aqueous solution at the time of polymerization is not particularly limited, but the polymerization may be carried out by adjusting the pH if necessary.
- pH adjusters that can be used in this case include alkalis such as sodium hydroxide, potassium hydroxide and ammonia; mineral acids such as phosphoric acid, sulfuric acid and hydrochloric acid; organic acids such as formic acid and acetic acid.
- the molecular weight of the polymer thus obtained is not particularly limited, but is usually in the range of 100,000 to 50 million, and preferably in the range of 500,000 to 30 million.
- the (meth) acrylamide polymer thus obtained is obtained by the present invention. Since chloramide is excellent in quality, water solubility is remarkably improved and a sufficiently high molecular weight can be obtained. Furthermore, the obtained polymer is excellent in hue. Therefore, this (meth) acrylamide polymer can be suitably used as a flocculant, a paper additive, a petroleum recovery agent, and the like.
- Example 1 of JP-A-2001-340091 No. 3 cloned cells were obtained and cultured in the same manner as in Example 1 to obtain a wet cell containing -trolylhydratase. Obtained.
- a 1 L glass flask equipped with a stirrer was prepared as the first reactor, and a Teflon (registered trademark) tube 20 m having an inner diameter of 5 mm was prepared as the second reactor.
- the first reactor was charged with 400 g of water in advance.
- the wet cells obtained by the above culture method were suspended in pure water.
- the suspension was continuously fed at a rate of llgZh while stirring in the first reactor.
- Acrylonitrile was continuously fed at a rate of 32 g Zh and pure water was fed at a rate of 37 g Zh.
- a 0.1-NaOH aqueous solution was fed so that the reaction P H was 7.5 to 8.5.
- These feeds were fed in separate lines from each storage tank and were not able to contact other feeds until fed into the reactor.
- the reaction liquid is continuously withdrawn from the first reactor at a rate of 80 gZh, and continuously fed to the second reactor to produce the second reaction. The reaction was allowed to proceed further in the vessel.
- Both the first reactor and the second reactor were immersed in a water bath at a temperature of 10 to 20 ° C, and the temperature was controlled so that the liquid temperature inside each reactor was 15 ° C.
- reaction solution (I)) of each reactor was sampled.
- reaction solution (I) reaction solution (reaction solution (I)) of each reactor was sampled.
- the conversion rate to acrylamide at the outlet of the first reactor was 90%
- the acryl-tolyl concentration at the outlet of the second reactor was below the detection limit (100 ppm by weight) )
- the acrylamide concentration was 53.5% by weight.
- WakosiHI 5C18HG WakosiHI 5C18HG (Wako Pure Chemical Industries)
- the acrylamide concentration was determined as follows. A commercially available acrylamide was dissolved in pure water to prepare an acrylamide aqueous solution with a known concentration, and a calibration curve for acrylamide concentration analysis in HPLC was prepared. Using this, the area value at the time of HPLC analysis of the test solution was converted to the concentration of allylamide (absolute calibration curve method). The amount of reaction solution used for HPLC measurement was 5. Since the density of each reaction solution was hardly affected, the acrylamide concentration (wt%) was obtained in this way.
- reaction solution (I) reaction solution (reaction solution (I)) was obtained.
- activated carbon pH adjusted to 5 with ⁇ -NaOH aqueous solution. . This was stirred at 25 ° C. for 5 hours and then filtered through filter paper to remove the activated carbon.
- the activated carbon is washed with 300 g of pure water and mixed with the previous activated carbon treatment solution. Then, neutralization was carried out with ⁇ -NaOH aqueous solution to obtain pH 7 and about 7900 g of product (aqueous solution (II)). The final acrylamide concentration in the product (aqueous solution (II)) after the activated carbon treatment was 50.6% by weight, exceeding the target concentration of 50.0% by weight.
- Example 2 The same procedure as in Example 1 was performed except that the supply amount of acrylonitrile was 30 gZh and the supply amount of pure water was 39 gZh. As a result, the acrylamide concentration in the obtained reaction solution was 50.2% by weight. The final acrylamide concentration in the product (aqueous solution) after activated carbon treatment was 47.1% by weight, which was below the target of 50.0% by weight. For this reason, it became necessary to carry out a process for obtaining a concentration in the final product, for example, a removal process by distillation of water.
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007251017A AU2007251017B2 (en) | 2006-05-15 | 2007-04-03 | (meth)acrylamide production method |
EP07740872.2A EP2019146B1 (en) | 2006-05-15 | 2007-04-03 | Acrylamide production method |
KR1020087025766A KR101289148B1 (ko) | 2006-05-15 | 2007-04-03 | 아크릴아미드 또는 메타아크릴아미드의 제조방법 |
US12/301,138 US8143033B2 (en) | 2006-05-15 | 2007-04-03 | Process for producing (meth)acrylamide |
JP2008515453A JPWO2007132601A1 (ja) | 2006-05-15 | 2007-04-03 | (メタ)アクリルアミドの製造方法 |
Applications Claiming Priority (2)
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JP2006135813 | 2006-05-15 | ||
JP2006-135813 | 2006-05-15 |
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WO2007132601A1 true WO2007132601A1 (ja) | 2007-11-22 |
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US (1) | US8143033B2 (ja) |
EP (1) | EP2019146B1 (ja) |
JP (1) | JPWO2007132601A1 (ja) |
KR (1) | KR101289148B1 (ja) |
CN (1) | CN101426924A (ja) |
AU (1) | AU2007251017B2 (ja) |
WO (1) | WO2007132601A1 (ja) |
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WO2012039407A1 (ja) * | 2010-09-24 | 2012-03-29 | 三井化学株式会社 | アミド化合物の製造方法およびアミド化合物の製造装置 |
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CN101654414B (zh) * | 2009-06-30 | 2012-09-12 | 山东宝莫生物化工股份有限公司 | 采用螺旋板式反应器制备丙烯酰胺的工艺 |
CN102212157B (zh) * | 2010-08-20 | 2013-03-27 | 江苏南天农科化工有限公司 | 一种不含阻聚剂的丙烯酰胺水溶液的制备工艺 |
EP2524690A1 (en) * | 2011-05-17 | 2012-11-21 | ETH Zurich | Method for making customised nanoparticles, nanoparticles and use thereof |
RU2751919C2 (ru) | 2016-03-29 | 2021-07-20 | Басф Се | Способ получения раствора полиакриламида с увеличенной вязкостью |
CA3116246A1 (en) | 2018-10-18 | 2020-04-23 | Basf Se | Process for producing ammonium (meth-) acrylate |
WO2021089584A1 (en) | 2019-11-05 | 2021-05-14 | Basf Se | Method of storing a biocatalyst |
WO2021204850A1 (en) * | 2020-04-09 | 2021-10-14 | Basf Se | Biocatalytic synthesis of monomer mixtures for polyacrylamide manufacturing |
CN112522337B (zh) * | 2020-11-16 | 2023-02-17 | 广东宝莫生物化工有限公司 | 一种丙烯酰胺溶液的连续化生产方法 |
WO2023041515A2 (en) * | 2021-09-15 | 2023-03-23 | Basf Se | Method for preparing an aqueous (meth) acrylamide solution |
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- 2007-04-03 CN CNA2007800144222A patent/CN101426924A/zh active Pending
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CN101426924A (zh) | 2009-05-06 |
AU2007251017B2 (en) | 2011-02-17 |
EP2019146A1 (en) | 2009-01-28 |
EP2019146B1 (en) | 2020-12-16 |
JPWO2007132601A1 (ja) | 2009-09-24 |
KR20080109872A (ko) | 2008-12-17 |
EP2019146A4 (en) | 2012-04-04 |
AU2007251017A1 (en) | 2007-11-22 |
US8143033B2 (en) | 2012-03-27 |
US20090311759A1 (en) | 2009-12-17 |
KR101289148B1 (ko) | 2013-07-23 |
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