WO2015104977A1 - パーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩およびその製造法 - Google Patents
パーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩およびその製造法 Download PDFInfo
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- WO2015104977A1 WO2015104977A1 PCT/JP2014/083709 JP2014083709W WO2015104977A1 WO 2015104977 A1 WO2015104977 A1 WO 2015104977A1 JP 2014083709 W JP2014083709 W JP 2014083709W WO 2015104977 A1 WO2015104977 A1 WO 2015104977A1
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- alkali metal
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/40—Unsaturated compounds
- C07C59/58—Unsaturated compounds containing ether groups, groups, groups, or groups
- C07C59/60—Unsaturated compounds containing ether groups, groups, groups, or groups the non-carboxylic part of the ether being unsaturated
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
Definitions
- the present invention relates to an alkali metal salt of perfluorovinyloxypolyethercarboxylic acid and a method for producing the same. More specifically, the present invention relates to a perfluorovinyloxy polyether carboxylic acid alkali metal salt used as a novel fluorine-based reactive emulsifier (emulsifier having a polymerizable group) and a production method thereof.
- Patent Document 1 discloses a method for producing an aqueous dispersion of a vinylidene fluoride polymer having a solid content of 30 to 60% by weight and a small particle size of 200 nm or less, which is an average particle size suitable as a coating material. It is described that the following compounds are effectively used as fluorine-based reactive emulsifiers.
- Compound 1 is obtained by dechlorinating dichloro-perfluoroalkylcarboxylic acid obtained by heating ⁇ -hydro- ⁇ , ⁇ -dichloroperfluoroalkane in the presence of chlorine or nitrogen oxide at high temperature. Since it is synthesized, it is difficult to obtain raw materials, and oxidation at a high temperature is required, which is not practical (Non-patent Document 1).
- Compound 5 can be obtained according to the scheme shown below using tetrafluorooxetane obtained from the reaction of tetrafluoroethylene and formaldehyde as shown below in accordance with the scheme shown below. Since metal zinc is used, there is also a problem of waste, which is not industrially advantageous (Patent Document 3).
- Patent Document 3 describes a method for obtaining ammonium carboxylate and alkali metal carboxylate via a carboxylic acid, but perfluorovinyl ether causes polymerization even in the presence of an acid of a carboxylic acid level. Since it often changes to a polymer, the yield is lowered, and it is generally not suitable as a method for obtaining a metal carboxylate.
- Japanese Patent No. 3298321 Japanese Patent Publication No. 60-49176 Japanese Patent No. 3291733 Japanese Patent Publication No. 3-80145 Japanese Patent No. 4,617,833
- An object of the present invention is to provide a novel compound that can be used as a fluorine-based reactive emulsifier using a readily available raw material as a starting material without requiring special equipment, and a method for producing the same.
- CF 2 CF [OCF 2 CF (CF 3 )] b O (CF 2 ) a O [CF (CF 3 ) CF 2 O] c CF (CF 3 ) COOM [I]
- M is an alkali metal
- a is an integer of 1 to 6, preferably 2
- b + c is an integer of 0 to 6, preferably 0 or 1.
- the alkali metal salt of perfluorovinyloxypolyether carboxylic acid according to the present invention uses a readily available raw material as a starting material without requiring special equipment, and the obtained compound is used as a fluorine-based reactive emulsifier. Because it is a possible new compound, cross-linking agents and modifiers for various polymers, antireflection coatings for displays, optical fiber cladding materials, adhesives, various release coating agents, surface coating agents, surface modifiers Effectively used in a wide range of applications such as water and oil repellents.
- the perfluorovinyloxy polyether carboxylic acid alkali metal salt represented by the general formula [I] is obtained by hydrolyzing the perfluorovinyloxy polyether carboxylic acid alkyl ester represented by the general formula [II] in the presence of an alkali metal hydroxide. Produced by decomposition or solvolysis.
- Perfluorovinyloxypolyether carboxylic acid alkyl ester [II] used as a production raw material for this reaction has the general formula ROOCCF (CF 3 ) [OCF 2 CF (CF 3 )] b O (CF 2 ) a O [CF ( CF 3 ) CF 2 O] c CF (CF 3 ) COOR (III)
- the perfluoropolyether dicarboxylic acid dialkyl ester represented by the formula (1) is reacted with sodium carbonate or potassium carbonate, and one terminal group is vinylated (Patent Document 4, Non-Patent Document 2).
- perfluoropolyether dicarboxylic acid dialkyl ester [III], formula FOCCF (CF 3) [OCF 2 CF (CF 3)] b O (CF 2) a O [CF (CF 3) CF 2 O] c CF (CF 3 ) COF
- Perfluoropolyether dicarboxylic acid fluoride represented by general formula ROH in the presence of a metal alcohol such as an aliphatic alcohol having 1 to 12 carbon atoms and sodium fluoride (patent document) 5).
- the hydrolysis or solvolysis of the perfluorovinyloxypolyether carboxylic acid alkyl ester [II] is carried out in the presence of an alkali metal hydroxide, preferably at a reaction temperature of about ⁇ 20 to 0 ° C.
- an alkali metal hydroxide sodium hydroxide or potassium hydroxide is preferably used, and is appropriately selected in consideration of the reactivity in the polymerization process (surface activation ability).
- These can be used as an aqueous solution or an alcohol solution, and any alcohol can be used without particular limitation as long as it dissolves an alkali metal hydroxide.
- the number of carbon atoms is preferably 1.
- ⁇ 6 aliphatic alcohols particularly preferably ethanol or isopropanol are used. Further, a mixture of methanol, ethanol, and isopropanol can be used as the alcohol.
- the reaction temperature is lower than this, the progress of the reaction becomes slow, while at the high temperature, the excessive decomposition progresses.
- the concentration of the alkali metal hydroxide aqueous solution or alcohol solution is not particularly limited, but it is preferably used at a concentration of about 10 to 20% by weight from the viewpoint of operation with the solution.
- concentration of the alkali metal hydroxide aqueous solution or alcohol solution is not particularly limited, but it is preferably used at a concentration of about 10 to 20% by weight from the viewpoint of operation with the solution.
- the alkali metal hydroxide is used in a ratio of 0.95 to 1.05 times mol, preferably 0.95 to 1.02 times mol for the carboxylic acid ester. If the alkali metal hydroxide is used in a proportion higher than this, it may cause excessive decomposition.
- an ester is not dropped into an alkali metal hydroxide solution, but preferably an aqueous solution or alcohol solution of an alkali metal hydroxide is added in an aqueous emulsion (suspension) of an ester or in an alcohol solution. This is done by dripping.
- the unreacted carboxylic acid ester is recovered together with water or alcohol in the concentration step and reused as a suspension or alcohol solution, or isolated and produced by distillation from the suspension or alcohol solution and reused.
- the resulting reaction mixture is concentrated in a drying facility such as an evaporator or a conical dryer.
- a drying facility such as an evaporator or a conical dryer.
- the yield decreases, preferably at 120 ° C. or lower under reduced pressure. Drying is performed.
- the perfluorovinyloxypolyether carboxylic acid alkali metal salt according to the present invention acts as an emulsifier, for example, during the emulsion polymerization reaction of a fluorine-containing monomer, and enables emulsion polymerization with or without the use of an emulsifier conventionally used. It can also be. Moreover, it becomes a copolymer component and can realize high vulcanization adhesion.
- fluorine-containing monomer examples include vinylidene fluoride, tetrafluoroethylene, hexafluoropropylene, chlorotrifluoroethylene, trifluoroethylene, and vinyl fluoride.
- examples thereof include perfluoro (alkyl vinyl ether) having an alkyl group having 1 to 3 carbon atoms, and one or two or more of these fluorine-containing monomers are subjected to a polymerization reaction to form a homopolymer or copolymer. To form.
- These fluorine-containing monomers can also form copolymers with non-fluorine-containing monomers such as propylene and ethylene.
- the perfluorovinyloxypolyether carboxylic acid alkali metal salt is used together with other known fluorine-based emulsifiers as necessary, as an emulsifier (and copolymerization component) in water or water-soluble. It is used in an amount of about 0.03 to 2% by weight, preferably about 0.1 to 1% by weight, based on the aqueous medium to which alcohol or the like is added.
- the polymerization reaction is preferably performed in the presence of a water-soluble polymerization initiator or a polymerization initiator that has formed a redox system with the water-soluble polymerization initiator, and the resulting reaction mixture is added with an aqueous metal salt solution such as calcium chloride. It can be coagulated, washed with water, and dried to obtain a desired fluorine-containing monomer homopolymer or copolymer.
- the reactor pressure when reaching 50 ° C. was 3.07 MPa ⁇ G. After confirming that the temperature was stable, 0.8 g of ammonium persulfate and 0.2 g of sodium hydrogen sulfite were added as an aqueous solution to initiate the polymerization reaction.
- the obtained fluorine-containing elastomer latex is put into the same amount of 1% by weight calcium chloride aqueous solution to coagulate the latex, then filtered and washed 5 times with 5 times the amount of ion-exchanged water, and dried in a vacuum dryer.
- 2500 g of VdF / TFE / PMVE copolymer was obtained.
- the obtained copolymer was confirmed to have the following composition.
- VdF 73.6 mol% TFE 9.5 mol% PMVE 16.9 mol% CF 2 CFO (CF 2 ) 2 OCF (CF 3 ) COOK 0.03 mol%
- Comparative Reference Example 2 On the surface of zinc phosphate-treated SPCC steel sheet, a solution prepared by dissolving 4 times the amount of methylethylketone, an adhesive mainly composed of aminosilane and vinylsilane (Lord's product Chemnock AP-133), was applied for 30 minutes at room temperature. After drying, baking was performed at 150 ° C. for 30 minutes. The unvulcanized fabric before press vulcanization prepared in Comparative Reference Example 1 was joined to this adhesive layer-formed metal plate, and pressure-crosslinking was performed at 180 ° C. for 6 minutes to obtain a fluorine-containing elastomer laminated metal plate. Produced. When the 90 ° peel test was conducted on the fluorine-containing elastomer laminated metal plate in the same manner, the peel strength was 1.1 (N / mm).
- the perfluorovinyloxypolyether carboxylic acid alkali metal salt according to the present invention has high polymerization performance, it can be effectively used as a cross-linking agent or modifier for various polymers, and has a high fluorine content. Therefore, it not only improves or improves the heat resistance, weather resistance, chemical resistance, etc. of various polymers using it, but also exhibits a low refractive index, so it can be applied to antireflection films such as displays and optical fiber cladding materials. Can also be used.
- terminal carbonyl group is a polar functional group, when used for adhesives, it can improve adhesion to various members, and also has surface active properties, so It is also used in applications such as coating agents, surface coating agents, surface modifiers, and water and oil repellents.
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
Description
化合物1:F2C=CF(CF2)1~10COOM
化合物2:F2C=CF(CF2CFX)1~5COOM
化合物3:F2C=CFO(CF2)1~10COOM
化合物4:F2C=CFO(CF2CFXO)1~10CF2CFCOOM
化合物5:H2C=CFCF2O〔CF(CF3)CF2O〕0~10CF(CF3)COOM
化合物6:F2C=CFCF2O〔CF(CF3)CF2O〕1~10CF(CF3)COOM
X:FまたはCF3基
M:H、NH4またはアルカリ金属
CF2=CF〔OCF2CF(CF3)〕bO(CF2)aO〔CF(CF3)CF2O〕cCF(CF3)COOM 〔I〕
(ここで、Mはアルカリ金属であり、aは1~6の整数、好ましくは2であり、b+cは0~6の整数、好ましくは0または1である)で表わされるパーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩が提供され、かかるパーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩は、一般式
CF2=CF〔OCF2CF(CF3)〕bO(CF2)aO〔CF(CF3)CF2O〕cCF(CF3)COOR 〔II〕
(ここで、Rは炭素数1~12のアルキル基であり、aは1~6の整数であり、b+cは0~6の整数である)で表わされるパーフルオロビニルオキシポリエーテルカルボン酸アルキルエステルをアルカリ金属水酸化物存在下で加水分解または加溶媒分解することによって製造される。
ROOCCF(CF3)〔OCF2CF(CF3)〕bO(CF2)aO〔CF(CF3)CF2O〕cCF(CF3)COOR 〔III〕
で表わされるパーフルオロポリエーテルジカルボン酸ジアルキルエステルを、炭酸ナトリウムや炭酸カリウムなどと反応させ、一方の末端基をビニル化させることによって製造される(特許文献4、非特許文献2)。このパーフルオロポリエーテルジカルボン酸ジアルキルエステル〔III〕は、一般式
FOCCF(CF3)〔OCF2CF(CF3)〕bO(CF2)aO〔CF(CF3)CF2O〕cCF(CF3)COF 〔IV〕
で表わされるパーフルオロポリエーテルジカルボン酸フロライドを、一般式ROHで表わされる炭素数1~12の脂肪族アルコールおよびフッ化ナトリウムなどの金属フッ化物の存在下で反応させることにより製造される(特許文献5)。
定法に従って調製した2,3,3,3-テトラフルオロ-2-〔1,1,2,2-テトラフルオロ-2-(1,2,2-トリフルオロビニルオキシ)エトキシ〕プロパン酸メチル
CF2=CFO(CF2)2OCF(CF3)COOCH3 (a=2、b=0、c=0)
5.19g(13.3ミリモル)のエタノール溶液5mlを、氷および塩を用いて、-10℃以下に冷却した。続いて、冷却したエタノール5mlに水酸化カリウム(純度85重量%、0.9g)を溶解させたエタノール溶液(濃度15.8重量%)を、-10℃を上限としてゆっくりと滴下した。その8時間後にエバポレーターでエタノールを除去したところ、ワックス状の白色固体が4.90g得られた。
19F-NMR(CFCl3、CD3OD溶媒):
δ(ppm):-134.75、-134.11(m、1F、F2C=CF-)
-124.53、-124.44(m、1F、-CFCF3-)
-121.82、-121.08(m、1F、E-FC=CF-)
-114.31、-113.77(m、1F、Z-FC=CF-)
-89.28(s、2F、=CFOCF 2 -)
-87.08、-83.74(dd、2F、-CF 2 OCFCF3-)
-81.22(s、3F、-CFCF 3 -)
定法に従って調製した2,3,3,3-テトラフルオロ-2-{1,1,2,3,3,3-ヘキサフルオロ-2-〔1,1,2,2-テトラフルオロ-2-(トリフルオロビニルオキシ)エトキシ〕プロポキシ}プロパン酸メチル
CF2=CFO(CF2)2OCF(CF3)CF2OCF(CF3)COOCH3 (a=2、b=0、c=1)
および2,3,3,3-テトラフルオロ-2-{1,1,2,2-テトラフルオロ-2-〔1,2,2,3,3,3-ヘキサフルオロ-2-(トリフルオロビニルオキシ)プロポキシ〕エトキシ}プロパン酸メチル
CF2=CFOCF2CF(CF3)O(CF2)2OCF(CF3)COOCH3 (a=2、b=1、c=0)
の混合物10.8g(20.0ミリモル)のエタノール溶液8mlを、氷および塩を用いて-10℃以下に冷却した。続いて、冷却したエタノール10mlに水酸化カリウム(純度85重量%、1.32g)を溶解させたエタノール溶液(濃度12.5重量%)を、-10℃を上限としてゆっくりと滴下した。その8時間後にエバポレーターでエタノールを除去したところ、ワックス状の白色固体が9.88g得られた。
19F-NMR(CFCl3、CD3OD溶媒):
δ(ppm):-144.12、-143.64(m、1F、OCF2CFCF3O-)
-134.75、-134.11(m、1F、F2C=CF-)
-124.53、-124.44(m、1F、-CFCF3-)
-121.82、-121.08(m、1F、E-FC=CF-)
-114.31、-113.77(m、1F、Z-FC=CF-)
-89.30、-88.99(m、2F、=CFOCF 2 -)
-86.02、-83.21(m、4F、-CF 2 OCFCF3-)
-81.06(s、3F、-CFCF 3 CO2-)
-78.90(s、3F、-OCF2CFCF3-)
攪拌羽根を有する内容積10Lのステンレス鋼製圧力容器内に、
CF3CF2CF2〔OCF(CF3)CF2〕OCF(CF)3COONH4〔乳化剤〕 34g
CF2=CFO(CF2)2OCF(CF3)COOK〔反応性乳化剤〕 2.4g
Na2HPO4・12水和物〔緩衝剤〕 17g
I(CF2)4I〔連鎖移動剤〕 27g
イオン交換水 5600g
を仕込んだ後、窒素置換を行い反応器内の酸素の除去を行い、そこに
パーフルオロ(メチルビニルエーテル)CF2=CFOCF3〔PMVE〕 790g
フッ化ビニリデン〔VdF〕/テトラフルオロエチレン〔TFE〕 670g
混合ガス
(VdF/TFE=87.5モル%/12.5モル%)
を仕込んで、反応器内温度を50℃に昇温させた。50℃到達時の反応器圧力は3.07MPa・Gであった。温度が安定したことを確認した後、そこに過硫酸アンモニウム0.8gおよび亜硫酸水素ナトリウム0.2gを水溶液として添加し、重合反応を開始させた。
VdF 73.6モル%
TFE 9.5モル%
PMVE 16.9モル%
CF2=CFO(CF2)2OCF(CF3)COOK 0.03モル%
MTカーボンブラック 37重量部
トリアリルイソシアヌレート(日本化成製品TAIC WH60) 4 〃
有機過酸化物(日油製品パーヘキサ25B-40) 1.5 〃
を配合し、オープンロールを用いて混練して未加硫生地を調製した後、180℃、6分間のプレス加硫および230℃、22時間のオーブン加硫を行い、得られた加硫物の常態物性(ISO 48に対応するJIS K6253およびISO 37に対応するJIS K6251準拠)および圧縮永久歪(ISO 815に対応するJIS K6262準拠)の測定を行った。
参考例において、乳化剤成分中のCF2=CFO(CF2)2OCF(CF3)COOKを用いることなくVdF/TFE/PMVE共重合体を得た。
表
測定項目 参考例 比較参考例1
常態物性
硬度(Duro A) 75 75
100%モジュラス (MPa) 5.5 5.7
破断強度 (MPa) 19.9 18.8
破断時伸び (%) 250 240
圧縮永久歪〔3.5mm径 Oリング使用〕
200℃、22時間 (%) 26 25
200℃、70時間 (%) 32 34
90°剥離試験
剥離強度 (N/mm) 4.1 0.2
リン酸亜鉛処理SPCC鋼板の表面に、アミノシランおよびビニルシランを主成分とする接着剤(ロード社製品ケムノックAP-133)を4倍量のメチルエチルケトンに溶解させた溶液を塗布し、室温条件下で30分間乾燥させた後、150℃、30分間のベーキングを実施した。この接着剤層形成金属板上に、比較参考例1で調製されたプレス加硫前の未加硫生地を接合させ、180℃、6分間の加圧架橋を行って含フッ素エラストマー積層金属板を作製した。この含フッ素エラストマー積層金属板について、同様に90°剥離試験を行ったところ、剥離強度は1.1(N/mm)であった。
Claims (7)
- 一般式
CF2=CF〔OCF2CF(CF3)〕bO(CF2)aO〔CF(CF3)CF2O〕cCF(CF3)COOM
〔I〕
(ここで、Mはアルカリ金属であり、aは1~6の整数であり、b+cは0~6の整数である)で表わされるパーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩。 - アルカリ金属がナトリウムまたはカリウムであり、aは2であり、b+cは0または1である請求項1記載のパーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩。
- 一般式
CF2=CF〔OCF2CF(CF3)〕bO(CF2)aO〔CF(CF3)CF2O〕cCF(CF3)COOR
〔II〕
(ここで、Rは炭素数1~12のアルキル基であり、aは1~6の整数であり、b+cは0~6の整数である)で表わされるパーフルオロビニルオキシポリエーテルカルボン酸アルキルエステルを、アルカリ金属水酸化物の存在下で加水分解または加溶媒分解させることを特徴とする、一般式
CF2=CF〔OCF2CF(CF3)〕bO(CF2)aO〔CF(CF3)CF2O〕cCF(CF3)COOM
〔I〕
(ここで、Mはアルカリ金属であり、aは1~6の整数であり、b+cは0~6の整数である)で表わされるパーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩の製造法。 - アルカリ金属水酸化物が、パーフルオロビニルオキシポリエーテルカルボン酸アルキルエステルに対して0.95~1.05倍モルの割合で用いられる請求項3記載のパーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩の製造法。
- アルカリ金属水酸化物が水酸化ナトリウムまたは水酸化カリウムである請求項3記載のパーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩の製造法。
- 加溶媒分解に用いられる溶媒が、炭素数1~6の脂肪族アルコールである請求項3記載のパーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩の製造法。
- パーフルオロビニルオキシポリエーテルカルボン酸アルキルエステルの水性エマルジョン中またはアルコール溶液中に、アルカリ金属水酸化物の水溶液またはアルコール溶液を滴下することにより、加水分解または加溶媒分解が行われる請求項3記載のパーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩の製造法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US15/110,579 US9765008B2 (en) | 2014-01-10 | 2014-12-19 | Perfluorovinyloxy polyether carboxylic acid alkali metal salt and method for producing the same |
EP14877757.6A EP3093281B1 (en) | 2014-01-10 | 2014-12-19 | Alkali metal salt of perfluoro(vinyloxy polyether) carboxylic acid, and method for producing same |
CN201480072771.XA CN105873894B (zh) | 2014-01-10 | 2014-12-19 | 全氟乙烯氧基聚醚羧酸碱金属盐及其制造方法 |
JP2015521900A JP5783345B1 (ja) | 2014-01-10 | 2014-12-19 | パーフルオロビニルオキシポリエーテルカルボン酸アルカリ金属塩およびその製造法 |
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JP2014003434 | 2014-01-10 |
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- 2014-12-19 US US15/110,579 patent/US9765008B2/en active Active
- 2014-12-19 JP JP2015521900A patent/JP5783345B1/ja active Active
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CN105873894B (zh) | 2017-11-07 |
JP5783345B1 (ja) | 2015-09-24 |
EP3093281B1 (en) | 2018-11-21 |
EP3093281A4 (en) | 2017-06-07 |
EP3093281A1 (en) | 2016-11-16 |
JPWO2015104977A1 (ja) | 2017-03-23 |
US9765008B2 (en) | 2017-09-19 |
CN105873894A (zh) | 2016-08-17 |
US20160332951A1 (en) | 2016-11-17 |
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