EP2097363A1 - Procédé de production de 3-alcoxypropan-1-ols - Google Patents

Procédé de production de 3-alcoxypropan-1-ols

Info

Publication number
EP2097363A1
EP2097363A1 EP07822482A EP07822482A EP2097363A1 EP 2097363 A1 EP2097363 A1 EP 2097363A1 EP 07822482 A EP07822482 A EP 07822482A EP 07822482 A EP07822482 A EP 07822482A EP 2097363 A1 EP2097363 A1 EP 2097363A1
Authority
EP
European Patent Office
Prior art keywords
substituted
alkoxy
radicals
interrupted
chain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07822482A
Other languages
German (de)
English (en)
Inventor
Jens Heimann
Markus Rösch
Ellen Dahlhoff
Steffen Maas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Priority to EP07822482A priority Critical patent/EP2097363A1/fr
Publication of EP2097363A1 publication Critical patent/EP2097363A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/01—Preparation of ethers
    • C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds
    • C07C41/26—Preparation of ethers by reactions not forming ether-oxygen bonds by introduction of hydroxy or O-metal groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/31—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by introduction of functional groups containing oxygen only in singly bound form

Definitions

  • the present invention relates to processes for the preparation of 3-alkoxypropan-1-ols of general formula I.
  • R 1 and R 2 and R 3, R 4 and R 5 independently of one another denote straight-chain or branched C 1 - to C 20 -alkyl radicals which are optionally mono- or polysubstituted to C 20 -alkoxy-substituted or interrupted by one or more oxygen atoms in the chain;
  • C 8 - to C 20 -aryl optionally mono- or polysubstituted to C 20 -alkoxy-substituted or interrupted by or one or more oxygen atoms in the alkyl chain,
  • C 7 - to C 20 -arylalkyl optionally mono- or polysubstituted to C 20 -alkoxy substituted or interrupted by or one or more oxygen atoms in the alkyl chain
  • C7 to C20 alkylaryl optionally mono- or polysubstituted to C20 alkoxy-substituted C7 to C2o-cycloalkyl and
  • R2 optionally mono- or polysubstituted to
  • 3-alkoxypropanols are sought solvents and also versatile as building blocks for active ingredients.
  • JP-A-2001247503 discloses the ZrO 2 -catalyzed addition of alcohols to allyl alcohol, which, however, proceeds with only unsatisfactory conversion and unsatisfactory selectivity.
  • the etherification of the corresponding diols described in J PA-2004196783 requires either stoichiometric amounts of base or conversion and selectivity to the monoether are not satisfactory.
  • Acrolein is also known in the presence of a catalyst first to alkoxylie- Ren, wherein 3-alkoxypropionadehyde is formed, and then to hydrogenate the aldehyde in the presence of hydrogenation catalysts to 3-alkoxypropanol.
  • nickel catalysts are recommended to be particularly effective and inexpensive, for example in EP-A 1 085 003.
  • These processes have the disadvantage that the catalytically active element, in particular when using Raney nickel catalysts, in small amounts in the form of soluble compounds contaminates the product stream and thus additional workup steps are required.
  • the present invention the object of the invention to provide a method with the 3-Alkoxypropan1-ole without the use of toxicologically problematic substances technically easy to implement and generally applicable, that is also in large-scale multi-pupose systems feasible, with good turnover and good selectivity can be produced without the disadvantages mentioned above occur.
  • esters of general formula II by catalytic hydrogenation of esters of general formula II,
  • R 1 and R 2 and R 3, R 4 and R 5 independently of one another denote straight-chain or branched C 1 - to C 20 -alkyl radicals which are optionally mono- or polysubstituted to C 20 -alkoxy-substituted or interrupted by one or more oxygen atoms in the chain; C 8 - to C 20 -aryl, optionally mono- or polysubstituted to C 20 -alkoxy-substituted or interrupted by or one or more oxygen atoms in the alkyl chain, C 7 - to C 20 -arylalkyl, optionally mono- or polysubstituted to C 20 -alkoxy substituted or interrupted by or one or more oxygen atoms in the alkyl chain C7 to C20 alkylaryl, optionally mono- or polysubstituted to C20 alkoxy-substituted C7 to C2o-cycloalkyl and R2, R3 and R4 independently of one another additionally hydrogen mean,
  • the inventive method allows the selective conversion of the corresponding, accessible by addition of alcohols to acrylic esters ester of the general formula II in 3-alkoxypropan-1-ols with good conversion.
  • the procedure is suitable without special safety precautions also in large-scale plants, which are used for the production of changing products.
  • Catalysts for the hydrogenation according to the invention may be homogeneous or heterogeneous metal-containing catalysts, the metal being present elementally or in the form of a compound; Chrome and nickel are not included.
  • the catalysts which can be used preferably contain at least one metal from the 7th, the 8th, the 9th, the 10th, the 11th or the 14th group of the Periodic Table of the Elements.
  • the catalysts which can be used according to the invention more preferably contain at least one element selected from the group consisting of Re, Fe, Ru, Co, Rh, Ir, Pd, Pt, Cu and Au.
  • the catalysts which can be used according to the invention particularly preferably contain at least one element selected from the group consisting of Pd, Pt, Ru and Cu.
  • the catalysts which can be used according to the invention particularly preferably comprise Cu as the hydrogenation-active component.
  • Particularly preferred catalysts containing Cu as the hydrogenation-active component can be prepared according to the disclosure of US Pat. No. 5,403,962 or WO 2004/85356, which is expressly incorporated herein by reference.
  • an oxidic material comprising copper oxide, alumina and at least one of the oxides of lanthanum, tungsten, molybdenum, titanium or zirconium is provided;
  • powdered metallic copper, copper flakes, powdered cement or graphite or a mixture thereof may be added to the oxidic material, and
  • lanthanum oxide is preferred.
  • homogeneous catalysts comprising at least one element of the 8th, 9th or 10th group, with the exception of nickel. More preferred are homogeneous catalysts containing Ru, Rh, and / or Ir. If compounds of the abovementioned elements are used, salts such as, for example, halides, oxides, nitrates, sulfates, carbonates, alkoxides and aryloxides, carboxylates, acetylacetonates or acetates of the particular metal are suitable. Furthermore, these salts may be modified with complexing ligands.
  • the catalysts used according to the invention preferably contain one or more oxygen, sulfur, nitrogen or phosphorus-containing complexing ligands.
  • the catalyst is preferably selected from halides, oxides, nitrates, sulfates, carbonates, alkoxides, aryloxides, carboxylates, acetylacetonates and acetates of the respective metal and the compounds of the metal containing CO, CS, an optionally organyl-substituted amino ligand, an optionally organyl-substituted phosphine.
  • ligand an alkyl, allyl, cyclopentadienyl and / or olefin ligand.
  • RhCI TPP 3 ⁇ der Ru 4 H 4 (CO) -I 2 call.
  • Particularly preferred are those homogeneous catalysts containing Ru.
  • homogeneous catalysts are used, as described in US 5,180,870,
  • Such catalysts are about (TPP) 2 (CO) 3 Ru, [Ru (CO) 4 J 3 , (TPP) 2 Ru (CO) 2 Cl 2 , (TPP) 3 (CO) RuH 2 , (TPP) 2 ( CO) 2 RuH 2 , (TPP) 2 (CO) 2 RUCIH or (TPP) 3 (CO) RuCl 2 .
  • At least one heterogeneous catalyst is suitable, wherein at least one of the abovementioned metals can be used as such, as a Raney catalyst and / or applied to a conventional support.
  • Preferred support materials are, for example, activated carbons or oxides such as, for example, aluminum oxides, silicon oxides, titanium oxides or zirconium oxides. Also to be mentioned among other things as support materials bentonites. If two or more metals are used, they may be present separately or as an alloy.
  • At least one metal as such and at least one other metal as Raney catalyst or at least one metal as such and at least one other metal applied to at least one support, or at least one metal as Raney catalyst and at least one another metal applied to at least one support, or at least one metal as such and at least one metal other than Raney catalyst and at least one other metal applied to at least one support.
  • the catalysts used may, for example, also be so-called precipitation catalysts.
  • Such catalysts can be prepared by reacting their catalytically active components from their salt solutions, in particular from the solutions of their nitrates and / or acetates, for example by adding solutions of alkali metal and / or alkaline earth metal hydroxide and / or carbonate. Solutions, for example, sparingly soluble hydroxides, oxide hydrates, basic salts or carbonates.
  • the precipitates and then calcined by calcination at generally 300 to 700 0 C, in particular 400 to 600 0 C in the corresponding oxides, mixed oxides and / or mixed-valent oxides, by treatment with hydrogen or with hydrogen containing gases in the range of generally 50 to 700 ° C, especially 100 to 400 0 C to the respective metals and / or oxidic compounds lower oxidation state reduced and converted into the actual catalytically active form. This is usually reduced until no more water is formed.
  • the precipitation of the catalytically active components can be carried out in the presence of the relevant support material.
  • the catalytically active components can advantageously be precipitated simultaneously with the carrier material from the relevant salt solutions.
  • Hydrogenation catalysts which contain the metals or metal compounds catalyzing the hydrogenation on a carrier material are preferably used.
  • those carrier materials in which the catalytic hydrogenating component has been applied to a carrier material, for example by impregnation, are generally suitable for the process according to the invention .
  • the manner of applying the catalytically active metal to the support is usually not critical and can be accomplished in various ways.
  • the catalytically active metals can be supported on these support materials, for example by impregnation with solutions or suspensions of the salts or oxides of the relevant elements, drying and subsequent reduction of the metal compounds to the respective metals or compounds of lower oxidation state by means of a reducing agent, preferably with hydrogen or complex hydrides. be applied.
  • catalytically active metals Another possibility for applying the catalytically active metals to these carriers is to impregnate the carrier with solutions of thermally easily decomposable salts, for example with nitrates or thermally easily decomposable complex compounds, for example carbonyl or hydrido complexes of the catalytically active metals, and the like impregnated carrier for thermal decomposition of the adsorbed metal compounds to temperatures in the range of 300 to 600 ° C to heat.
  • This thermal decomposition is preferably carried out under a protective gas atmosphere. Suitable shielding gases are, for example, nitrogen, carbon dioxide, hydrogen or the noble gases.
  • the catalytically active metals can be deposited on the catalyst support by vapor deposition or by flame spraying.
  • the content of these supported catalysts on the catalytically active metals is in principle not critical to the success of the process according to the invention. In space- In general, higher levels of catalytically active metals of these supported catalysts result in higher space-time conversions than lower levels.
  • supported catalysts are used whose content of catalytically active metals in the range of 0.1 to 90 wt .-%, preferably in the range of 0.5 to 80 wt .-% based on the total weight of the catalyst. Since these content data refer to the entire catalyst including carrier material, but the different carrier materials have very different specific weights and specific surface areas, it is also conceivable that these data can be exceeded or exceeded, without adversely affecting the result of the process according to the invention. Of course, several of the catalytically active metals may be applied to the respective carrier material. Furthermore, the catalytically active metals can be applied to the support, for example, by the process of DE-OS 25 19 817 or EP 0 285 420 A1.
  • the catalytically active metals are present as alloys which are obtained by thermal treatment and / or reduction of e.g. by impregnation of the carrier material with a salt or complex of the aforementioned metals.
  • Both the activation of the precipitation catalysts and of the supported catalysts can also be carried out in situ at the beginning of the reaction by the hydrogen present.
  • these catalysts are activated separately before use.
  • carrier materials in general, the oxides of zinc, aluminum and titanium, zirconium dioxide, silicon dioxide, lanthanum oxide, clays such as montmorillonites, silicates such as magnesium or aluminum silicates, zeolites such as the structural types ZSM-5 or ZSM-10, or activated carbon be used.
  • Preferred support materials are aluminas, titanium dioxides, silica, zirconia, lanthana and activated carbon.
  • mixtures of different carrier materials as carriers for catalysts which can be used in the process according to the invention.
  • catalysts are also those which contain zinc oxide or zirconium oxide as the active component.
  • the heterogeneous catalyst can be used, for example, as a suspension catalyst and / or as a fixed bed catalyst.
  • the hydrogenation is carried out with at least one suspension catalyst
  • preference is given in at least one stirred reactor or in at least one bubble column or in at least one hydrogenated a packed bubble column or in a combination of two or more identical or different reactors.
  • reactors denotes both different types of reactors and reactors of the same type, which differ, for example, by their geometry, such as, for example, their volume and / or their cross-section and / or by the hydrogenation conditions in the reactors.
  • a heterogeneous catalyst is used as catalyst in the hydrogenation as suspension catalyst, it is preferably separated off in the context of the present invention by at least one filtration step.
  • the thus separated catalyst can be recycled to the hydrogenation or fed to at least one of any other method. It is also possible to work up the catalyst in order, for example, to recover the metal contained in the catalyst.
  • the hydrogenation is particularly preferably carried out with at least one fixed catalyst.
  • at least one tubular reactor such as at least one shaft reactor and / or at least one tube bundle reactor is used, it being possible to operate a single reactor in bottom or trickle mode. If two or more reactors are used, at least one can be operated in a sump mode and at least one in a trickle mode.
  • the solution to be hydrogenated is pumped in a straight pass over the catalyst bed.
  • a portion of the product is withdrawn continuously after passing through the reactor as a product stream and optionally passed through a second reactor.
  • the other part of the product (circulation amount) is fed together with fresh starting material (feed quantity) to the reactor again.
  • this liquid circuit is used for heat dissipation.
  • This procedure is also referred to as circulation mode.
  • a weight ratio of feed to circulation amount of from 3: 1 to 1:40, more preferably from 2: 1 to 1:10, is preferably set.
  • liquid circulation amount in addition to the liquid circulation amount and a portion of the gas phase of the discharge after phase separation recycled, that is mixed with the inlet and the fresh gas hydrogen at any point in front of the reactor inlet.
  • This can be realized either after separation of the liquid phase of the discharge via a second separate pump or together with the liquid circuit via a pump.
  • both the at least one homogeneous and the at least one heterogeneous catalyst can, if necessary, be regenerated by at least one suitable process.
  • Heterogeneous catalysts which are present in shaped articles in the form of tablets, rings, cylinders, spheres, trilobes or strands are preferred for the hydrogenation.
  • Heterogeneous catalysts are, if necessary, generally activated prior to their use, preferably with hydrogen. The methods for this are known to the person skilled in the art.
  • the catalytic hydrogenation according to the invention is at 10 to 400 bar, preferably at 120 to 280 bar and more preferably at 130 to 250 bar and at a temperature of 100 to 300 0 C, preferably 120 to 200 0 C and particularly preferably 130 to 190 ° C performed.
  • ester II which serves as starting material for the hydrogenation according to the invention, can be prepared by processes known per se.
  • the ester II can be prepared, for example, by addition of alcohols of the formula R1-OH to acrylic esters of the formula III,
  • R 1 and R 2 and R 3, R 4 and R 5 are independently straight-chain or branched, optionally mono- or poly-C 1 -C 20 -alkoxy, substituted or interrupted by or one or more oxygen atoms in the chain d- to C 20 -alkyl radicals , C ⁇ - to C 2 O -aryl, optionally mono- or polysubstituted to C 2 -alkoxy-substituted or interrupted by or one or more oxygen atoms in the alkylene chain, C 7 - to C 2 -alkyl-arylalkyl, optionally mono- or polysubstituted Alkoxy-substituted or interrupted by or one or more oxygen atoms in the alkyl chain C7 to C30 alkylaryl, optionally mono- or polysubstituted to C20 alkoxy-substituted C7 to C2o-cycloalkyl and R2, R3 and R4 are each independently hydrogen can mean.
  • the addition of the alcohol to the acrylic ester can be carried out in an inert solvent such as. B. tetrahydrofuran or ethylene glycol dimethyl ether can be performed. This is necessary in particular when the alcohol R1-OH or the acrylate III used is not liquid under the conditions of the additions.
  • the reactants II for the hydrogenation according to the invention for the addition 0.001 to 10 mol%, based on the amount of acrylic ester, soluble in the reaction mixture of metal alkoxides, eg. As sodium methylate, used as a catalyst.
  • the anion of the metal alcoholate corresponds to the anion of the alcohol R1-OH to be added.
  • the acrylic acid ester III and the alcohol R1-OH are chosen so that R5 and R1 represent the same radical.
  • R5 and R1 represent the same radical.
  • ester II but not with known per se methods for the purification of substances such. B. distillation, but the reaction mixture from the addition after separation or neutralization of the addition catalyst without further purification of the ester II used directly in the hydrogenation.
  • homogeneous basic or acidic catalysts were used to prepare the ester II, they are preferably neutralized and / or neutralized with an organic or inorganic acid such as, for example, formic acid, acetic acid or another mono- or dicarboxylic acid or an organic or inorganic base optionally filtered off.
  • an organic or inorganic acid such as, for example, formic acid, acetic acid or another mono- or dicarboxylic acid or an organic or inorganic base optionally filtered off.
  • the catalyst used for the addition can also be removed by means of a suitable ion exchanger, in particular a commercially available anion or cation exchange resin.
  • reaction mixture must be filtered before use as starting material in the hydrogenation according to the invention.
  • n-propanol is formed as a by-product by hydrogenation of acrylic ester formed by cleavage, which can easily be separated off by distillation and either reused or otherwise recycled.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

La présente invention concerne un procédé de production de 3-alcoxypropan-1-ols de formule générale (I) par hydrogénation catalytique d'esters de formule générale (II), dans laquelle les radicaux R1 et R2 et R3, R4 et R5 peuvent désigner indépendamment les uns des autres des radicaux alkyle en C1 à C20 à chaîne linéaire ou ramifiée, le cas échéant uni- ou plurisubstitués par des groupes alcoxy en C1 à C20 ou interrompus par un ou plusieurs atomes d'oxygène dans la chaîne ; aryle en C6 à C20 ; arylalkyle en C7 à C20 le cas échéant uni- ou plurisubstitués par des groupes alcoxy en C1 à C20 ou interrompus par un ou plusieurs atomes d'oxygène dans la chaîne alkyle ; alkylaryle en C7 à C20 le cas échéant uni- ou plurisubstitués par des groupes alcoxy en C1 à C20 ou interrompus par un ou plusieurs atomes d'oxygène dans la chaîne alkyle ; cycloalkyle en C7 à C20 le cas échéant uni- ou plurisubstitués par des groupes alcoxy en C1 à C20 ; et R2, R3 et R4 peuvent également représenter indépendamment les uns des autres l'hydrogène, sur des catalyseurs exempts de chrome et de nickel.
EP07822482A 2006-11-27 2007-11-12 Procédé de production de 3-alcoxypropan-1-ols Withdrawn EP2097363A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07822482A EP2097363A1 (fr) 2006-11-27 2007-11-12 Procédé de production de 3-alcoxypropan-1-ols

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06124819 2006-11-27
EP07822482A EP2097363A1 (fr) 2006-11-27 2007-11-12 Procédé de production de 3-alcoxypropan-1-ols
PCT/EP2007/062194 WO2008064991A1 (fr) 2006-11-27 2007-11-12 Procédé de production de 3-alcoxypropan-1-ols

Publications (1)

Publication Number Publication Date
EP2097363A1 true EP2097363A1 (fr) 2009-09-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07822482A Withdrawn EP2097363A1 (fr) 2006-11-27 2007-11-12 Procédé de production de 3-alcoxypropan-1-ols

Country Status (5)

Country Link
US (1) US20100069681A1 (fr)
EP (1) EP2097363A1 (fr)
JP (1) JP2010511006A (fr)
CN (1) CN101541721A (fr)
WO (1) WO2008064991A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102112423A (zh) * 2008-08-01 2011-06-29 巴斯夫欧洲公司 制备苯基链烷-1-醇的方法
WO2013178693A1 (fr) * 2012-06-01 2013-12-05 Basf Se Procédé de production d'une mono-n-alkyl-pipérazine
CN103724166B (zh) * 2012-10-11 2015-10-28 浙江新化化工股份有限公司 一种3,3-二乙氧基-1-丙醇的制备方法
CN107721821B (zh) * 2017-10-13 2021-08-27 北京博迩科技有限公司 一种制备1,3-丙二醇的方法
US11319332B2 (en) 2017-12-20 2022-05-03 Basf Se Process for the generation of metal-containing films

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804914A (en) * 1972-05-25 1974-04-16 Phillips Petroleum Co Ruthenium(ii)complexes as catalysts for selective hydrogenation of cyclic polyenes to cyclic monoenes
US5210349A (en) * 1991-07-01 1993-05-11 Phillips Petroleum Company Selective hydrogenation of cyclic polyenes
US5128296A (en) * 1991-07-01 1992-07-07 Phillips Petroleum Company Selective hydrogenation of cyclic polyenes
US5180870A (en) * 1991-10-23 1993-01-19 E. I. Du Pont De Nemours And Company Hydrogenation of polyenes
US5177278A (en) * 1991-10-23 1993-01-05 E. I. Du Pont De Nemours And Company Preparation of cyclododecene
DE4141199A1 (de) * 1991-12-13 1993-06-17 Sued Chemie Ag Chromfreier katalysator fuer die hydrierung von organischen verbindungen, die die carbonylfunktionen enthalten
US5321176A (en) * 1992-12-22 1994-06-14 E. I. Du Pont De Nemours And Company Hydrogenation of polyenes
DE19621703A1 (de) * 1996-05-30 1997-12-04 Hoechst Ag Verfahren zur Herstellung von 3-Oxyalkylpropan-1-olen
WO1998050339A1 (fr) 1997-05-07 1998-11-12 Idemitsu Petrochemical Co., Ltd. 1-ACETOXY-3-n-PROPOXYPROPANE ET SOLVANTS D'ETHER ALCOOL
US6610638B1 (en) 1999-03-31 2003-08-26 Daicel Chemical Industries, Ltd. High purity 1,3-propanediol derivative solvent, process for producing the same, and use thereof
JP2004196783A (ja) 2002-12-02 2004-07-15 Nippon Shokubai Co Ltd アルカンジオールアルキルエーテル類の製造方法
GB0306152D0 (en) * 2003-03-19 2003-04-23 Givaudan Sa Method
DE10313702A1 (de) * 2003-03-27 2004-10-07 Basf Ag Katalysator und Verfahren zur Hydrierung von Carbonylverbindungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008064991A1 *

Also Published As

Publication number Publication date
WO2008064991A1 (fr) 2008-06-05
US20100069681A1 (en) 2010-03-18
JP2010511006A (ja) 2010-04-08
CN101541721A (zh) 2009-09-23

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