WO2010001774A1 - 1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法 - Google Patents
1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法 Download PDFInfo
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- WO2010001774A1 WO2010001774A1 PCT/JP2009/061453 JP2009061453W WO2010001774A1 WO 2010001774 A1 WO2010001774 A1 WO 2010001774A1 JP 2009061453 W JP2009061453 W JP 2009061453W WO 2010001774 A1 WO2010001774 A1 WO 2010001774A1
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- tetrachlorohexafluorobutane
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
- C07C19/10—Acyclic saturated compounds containing halogen atoms containing fluorine and chlorine
Definitions
- the present invention relates to a method for producing 1,2,3,4-tetrachlorohexafluorobutane. More specifically, high-purity 1,2,3,4-tetrachlorohexafluorobutane useful as a raw material for synthesis of hexafluoro-1,3-butadiene, which has been attracting attention as an etching gas for semiconductors, is efficiently produced. Regarding the method.
- 1,2,3,4-Tetrachlorohexafluorobutane is an important compound as a raw material for synthesis of hexafluoro-1,3-butadiene, which is attracting attention as an etching gas used for fine processing for semiconductors.
- a method for producing 1,2,3,4-tetrachlorohexafluorobutane for example, CClX 1 X 2 -CClX 3 -CClX 4 -CClX 5 X 6 (X 1 to X 6 are each independently a hydrogen atom)
- a method of reacting a compound represented by (2) with fluorine in a liquid phase is known (see Patent Document 1).
- Patent Document 1 describes perfluoroalkanes, perfluoroethers, perfluoropolyethers, chlorinated hydrocarbons, perfluoroalkylamines, and the like as solvents, and 1,2,3,4-tetrachloro It is described that hexafluorobutane is particularly preferred when hexafluorobutane is used as a solvent for the fluorination reaction because it has the advantage that the separation of the solvent and the product is unnecessary.
- the reaction raw material is diluted with a solvent and a fluorination reaction is carried out at a low concentration, and there remains a problem in that the target product is produced in high purity with good industrial efficiency and efficiency.
- the object of the present invention is to provide a method for producing 1,2,3,4-tetrachlorohexafluorobutane industrially inexpensively and efficiently with high purity.
- 1,2,3,4-tetrachlorobutane was reacted with fluorine gas in the absence of a catalyst to produce 1,2,3,4-tetra
- 1,2,3,4-tetrachlorohexafluorobutane (C 4 Cl 4 F 6 )
- C 4 Cl 4 F 6 is a hydrogen-containing compound that is an impurity, particularly an intermediate 1, 2,3,4-tetrachlorotetrafluorobutane (C 4 H 2 Cl 4 F 4 ) or 1,2,3,4-tetrachloropentafluorobutane (C 4 HCl 4 F 5 ) and a pseudoazeotrope-like mixture It was found that separation and purification became very difficult.
- a pseudo-azeotrope-like mixture is formed in this way, for example, when hexafluoro-1,3-butadiene is produced from this as a raw material by a dechlorination reaction, the above hydrogen-containing compound is converted to a tetrafluoro by a dechlorination reaction. By-products such as butadiene and pentafluorobutadiene are produced. These compounds are very difficult to separate from hexafluoro-1,3-butadiene.
- the present inventors have further studied from the viewpoint of preventing the hydrogen-containing compound from being contained in 1,2,3,4-tetrachlorohexafluorobutadiene as much as possible. It has been found that the above problem can be solved by distilling the reaction product of 3,4-tetrachlorobutane and fluorine gas under specific conditions.
- the present invention relates to the following [1] to [9], for example.
- the distillation column includes a first distillation column having a theoretical plate number of 15 or more and a second distillation column having a theoretical plate number of 25 or more, and
- the step (2) separates the hydrogen-containing compound from the reaction product by introducing the reaction product into the first distillation column and distilling it, and mainly 1 from the top of the first distillation column.
- At least one of the hydrogen-containing compounds is 1,2,3,4-tetrachlorotrifluorobutane, 1,2,3,4-tetrachlorotetrafluorobutane or 1,2,3,4-tetra Item 2.
- the 1,2,3,4-tetrachlorohexafluorobutane purified in the step (2) has a purity of 99.0% by mass or more, A method for producing 2,3,4-tetrachlorohexafluorobutane.
- the 1,2,3,4-tetrachlorohexafluorobutane purified in the step (2) has a purity of 99.95% by mass or more, A method for producing 2,3,4-tetrachlorohexafluorobutane.
- the 1,2,3,4-tetrachlorohexafluorobutane purified in the step (2b) has a purity of 99.99% by mass or more, A method for producing 2,3,4-tetrachlorohexafluorobutane.
- 1,2,3,4-tetrachlorohexafluorobutane can be industrially inexpensively and efficiently produced with high purity from 1,2,3,4-tetrachlorobutane.
- the method for producing 1,2,3,4-tetrachlorohexafluorobutane comprises 1,2,3,4-tetrachlorobutane and fluorine gas to react with each other.
- 1,2,3,4-Tetrachlorobutane used as a starting material in the above step (1) is a by-product in the production stage of industrially produced chloroprene rubber, for example, as shown in the following reaction formula It is obtained as a product.
- the above formula (I) is a formula showing the main reaction when producing chloroprene rubber
- the above formula (II) is a formula showing an example of a side reaction that proceeds simultaneously when the reaction shown by the formula (I) proceeds. is there.
- 1,2,3,4-tetrachlorobutane produced by a side reaction as shown by the formula (II) is incinerated with other by-products (chlorinated products). It is detoxified by such as and discarded.
- 1,2,3,4-tetrachlorobutane generated and discarded as a by-product in the production process of chloroprene rubber as described above can be separated and recovered and used as a starting material. it can.
- chloroprene rubber is an intermediate in the production stage of chloroprene rubber, and the product of the above formula (I), 3,4-dichlorobutene-1, is chlorinated to give 1 2,3,4-tetrachlorobutane can also be obtained.
- 1,2,3,4-tetrachlorobutane When the 1,2,3,4-tetrachlorobutane is used as a starting material, the purity is preferably 95% by mass or more, and more preferably 98% by mass or more.
- 1,2,3,4-tetrachlorobutane has a dl form and a meso form, which are optical isomers.
- the dl form has a melting point (mp) of 0 ° C. or lower and a boiling point (bp) of about 213 ° C., and is a liquid at room temperature
- the meso form has a melting point of about 73 ° C. and a boiling point of about 213 ° C. It is a white solid at room temperature. For this reason, it is possible to separate the two using the difference in characteristics.
- the content of the dl form contained in the starting material 1,2,3,4-tetrachlorobutane is preferably 40% by mass or more.
- the reaction in the above step (1) can be carried out in the absence of a solvent by mildly controlling conditions such as the reaction temperature and fluorine supply concentration, but it is preferably carried out in the presence of a solvent.
- the solvent that can be used in the present invention include perfluorocarbons, perchlorocarbons, chlorofluorocarbons, and the like.
- the reaction between 1,2,3,4-tetrachlorobutane and fluorine gas in the above step (1) is carried out by charging 1,2,3,4-tetrachlorobutane as a starting material into a solvent, and further using fluorine gas as the solvent It can carry out by the method of supplying in.
- the reaction temperature is preferably 0 to 100 ° C, more preferably 10 to 80 ° C, still more preferably 20 to 50 ° C.
- the concentration of 1,2,3,4-tetrachlorohexafluorobutane contained in the reaction product after solvent separation is: Preferably it is 80 mass% or more, More preferably, it is 90 mass% or more.
- the reaction temperature is kept low to suppress the formation of by-product pentachloropentafluorobutane. It is important to.
- Tetrachlorotetrafluorobutane C 4 H 2 Cl 4 F 4
- tetrachloropentafluorobutane C 4 HCl 4 F 5
- pentachlorotetrafluorobutane C 4 HCl 5 F 4
- trichloropentafluorobutane C 4 H 2 Cl 3 F 5
- hydrogen-containing compounds such as trichlorohexafluorobutane (C 4 HCl 3 F 6 )
- Examples include chlorofluorocarbons such as pentachloropentafluorobutane (C 4 Cl 5 F 5 ) and trichloroheptafluorobutane (C 4 Cl 3 F 7 ).
- the present inventors determined the relative volatility by carrying out distillation separation and gas-liquid equilibrium measurement of the above-mentioned impurities and the object 1,2,3,4-tetrachlorohexafluorobutane.
- relative volatility it is a scale showing the difficulty of volatilization of a liquid or vapor
- p / x is called the volatility of the component.
- x is the molar fraction of the component and p is the partial pressure of the component in the gas phase in equilibrium with the solution.
- y / x may also be called volatility, but this is usually called the equilibrium coefficient and is represented by K.
- the volatility of different components or the ratio of the equilibrium coefficients is called specific volatility and is usually expressed as ⁇ .
- p / x P (P is the vapor pressure of the component as a pure substance), so the relative volatility ⁇ AB of component A to component B is equal to PA / PB. Is explained.
- tetrachloropentafluorobutane is a particularly difficult-to-separate substance.
- 1,2,3,4-tetrachlorohexafluorobutane containing the hydrogen-containing compound is used as a raw material for producing hexafluoro-1,3-butadiene, which is useful as a fine processing etching gas for semiconductors, for example.
- pentafluorobutadiene, tetrafluorobutadiene, etc. are by-produced.
- These by-products are substances that are difficult to separate from the target hexafluoro-1,3-butadiene. Accordingly, it is desirable that the hydrogen-containing compound is not contained in 1,2,3,4-tetrachlorohexafluorobutane.
- the reaction product (crude 1,2,3,4-tetrachlorohexafluorobutane) obtained in the above step (1).
- the concentration of the hydrogen-containing compound is preferably 7% by mass or less, more preferably 5% by mass or less. In order to bring the concentration of the hydrogen-containing compound in the reaction product into the above range, it is important to complete the reaction with the fluorine gas as much as possible.
- Step (2) the reaction product (crude 1,2,3,4-tetrachlorohexafluorobutane) obtained in the step (1) is introduced into a distillation column and distilled, whereby the reaction product The impurities containing the hydrogen-containing compound are separated from the product to obtain purified 1,2,3,4-tetrachlorohexafluorobutane.
- the theoretical number of the distillation column is 15 or more, preferably 25 or more, more preferably 25 to 50.
- One distillation column may be used, or two or more distillation columns may be used.
- the step (2) separates the hydrogen-containing compound from the reaction product by introducing and distilling the reaction product obtained in the step (1) into the first distillation column, A step (2a) of obtaining a distillate mainly containing 1,2,3,4-tetrachlorohexafluorobutane from the top of the first distillation column, and introducing the distillate into the second distillation column; And a step (2b) of obtaining 1,2,3,4-tetrachlorohexafluorobutane purified from the bottom of the second distillation column by distillation.
- the pressure in the distillation column is 1 kPa to 0.1 MPa, preferably 1 kPa to 0.05 MPa, and the temperature is 50 to 150 ° C., preferably 90 to 145 ° C.
- the reflux ratio is preferably 15-20.
- the operation conditions of the distillation columns may be the same or different.
- the reaction product (crude 1,2,3,4-tetrachlorohexafluorobutane) obtained in the above step (1) is distilled from the reaction product by using a distillation column having the theoretical plate number or more. Impurities such as hydrogen-containing compounds are separated, and purified high-purity 1,2,3,4-tetrachlorohexafluorobutane is obtained.
- the purity of the purified 1,2,3,4-tetrachlorohexafluorobutane is preferably 99.0% by mass or more, more preferably 99.95% by mass or more, and further preferably 99.99% by mass or more.
- the concentration of the hydrogen-containing compound as an impurity is preferably 1.0% by mass or less, more preferably 0.05% by mass or less, and still more preferably 0.01% by mass or less.
- the hydrogen-containing compounds such as 1,2,3,4-tetrachloropentafluorobutane and 1,2,3,4-tetrachlorotetrafluorobutane separated as impurities are recycled to the reactor of step (1). It may be recycled and reused.
- High-purity hexafluoro-1,3-butadiene can be obtained by subjecting the high-purity 1,2,3,4-tetrachlorohexafluorobutane obtained as described above to a dechlorination reaction.
- the dechlorination reaction can be performed by a known method.
- Example 1 ⁇ Step (1)> In a reactor made of SUS304 (Teflon (registered trademark) lining) having an internal volume of 10 L, 3800 g of tetrachloromethane was added as a solvent, and 200 g of hydrogen fluoride was dissolved in the solvent. 1,000 g of 2,3,4-tetrachlorobutane was charged. After introducing a nitrogen gas at a pressure of 1.0 MPa and performing a leak test, a nitrogen purge was performed, and the temperature was maintained at 35 ° C. while stirring.
- SUS304 Teflon (registered trademark) lining
- Step (2)> The crude 1,2,3,4-tetrachlorohexafluorobutane obtained in the step (1) was distilled under the following conditions and operation.
- the results of gas chromatography analysis of 1,2,3,4-tetrachlorohexafluorobutane obtained from the top of the column are shown in Table 2 below.
- Distillation scale Crude 1,2,3,4-tetrachlorohexafluorobutane charge 400g
- Theoretical plate number 15 steps Operating conditions: Pressure 4 kPa; Oil bath temperature 102-142 ° C .; Reflux ratio 20
- Example 2 The crude 1,2,3,4-tetrachlorohexafluorobutane obtained in step (1) of Example 1 was subjected to a distillation operation under the following conditions and operations.
- the results of gas chromatography analysis of 1,2,3,4-tetrachlorohexafluorobutane obtained from the top of the column are shown in Table 3 below.
- Distillation scale Crude 1,2,3,4-tetrachlorohexafluorobutane charge 400g
- Distillation tower Precision distillation device (manufactured by Kiriyama Seisakusho) Packing tower 16mm ⁇ ⁇ 835mm Filling: Helipak No. 2 (Tokyo Special Wire Mesh) 167ml
- Example 3 Using 400 g of the crude 1,2,3,4-tetrachlorohexafluorobutane obtained in step (1) of Example 1 as the first distillation column, the distillation column having 15 theoretical plates of Example 1 was used. A gas containing 1,2,3,4-tetrachlorohexafluorobutane obtained from the top of one distillation column was introduced into the second distillation column, and the second distillation column was distilled with 25 theoretical plates of Example 2. Distillation was performed under the same distillation conditions using a column (total number of theoretical plates: 40). Table 4 below shows the results of gas chromatography analysis of the distillate containing 1,2,3,4-tetrachlorohexafluorobutane obtained from the bottom of the second distillation column.
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Abstract
Description
前記反応生成物を単一または複数の蒸留塔に導入して蒸留することにより、前記反応生成物から前記水素含有化合物を分離し、精製された1,2,3,4-テトラクロロヘキサフルオロブタンを得る工程(2)と
を含み、前記蒸留塔の少なくとも1つが理論段数15段以上の蒸留塔であることを特徴とする1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。
前記工程(2)が、前記反応生成物を前記第一蒸留塔に導入して蒸留することにより、前記反応生成物から前記水素含有化合物を分離し、前記第一蒸留塔の塔頂より主として1,2,3,4-テトラクロロヘキサフルオロブタンを含む留出分を得る工程(2a)と、前記留出分を前記第二蒸留塔に導入して蒸留することにより、前記第二蒸留塔の塔底より精製された1,2,3,4-テトラクロロヘキサフルオロブタンを得る工程(2b)とを含む
ことを特徴とする項[1]に記載の1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。
上記工程(1)において出発原料として使用される1,2,3,4-テトラクロロブタンは、例えば、下記反応式に示すように、工業的に生産されているクロロプレンゴムの製造段階で副生成物として得られる。
CH2=CH-CH=CH2+2Cl2 → CH2Cl-CHCl-CHCl-CH2Cl (II)
上記式(I)はクロロプレンゴムを製造する際の主反応を示す式であり、上記式(II)は式(I)で示す反応が進行する際に同時に進行する副反応の例を示す式である。従来、クロロプレンゴムを製造する際には、式(II)で示すような副反応により生成していた1,2,3,4-テトラクロロブタンは、他の副生物(塩素化物)と共に焼却処理等により無害化されて廃棄されている。
上記1,2,3,4-テトラクロロブタンを出発原料として使用する場合、純度は95質量%以上であることが好ましく、98質量%以上であることがより好ましい。また、1,2,3,4-テトラクロロブタンには、光学異性体であるdl体とメソ体が存在する。dl体は融点(mp)が0℃以下、沸点(bp)が約213℃であり、室温では液体であるのに対して、メソ体は融点が約73℃、沸点が約213℃であり、室温では白色の固体である。そのため、この特性の差を利用して両者を分離することが可能である。
テトラクロロテトラフルオロブタン(C4H2Cl4F4)、テトラクロロペンタフルオロブタン(C4HCl4F5)、ペンタクロロテトラフルオロブタン(C4HCl5F4)、トリクロロペンタフルオロブタン(C4H2Cl3F5)、トリクロロヘキサフルオロブタン(C4HCl3F6)等の水素含有化合物類、
ペンタクロロペンタフルオロブタン(C4Cl5F5)、トリクロロへプタフルオロブタン(C4Cl3F7)等のクロロフルオロカーボン類などが含まれる。
上記工程(2)では、上記工程(1)で得られた反応生成物(粗1,2,3,4-テトラクロロヘキサフルオロブタン)を蒸留塔に導入して蒸留することにより、該反応生成物から上記水素含有化合物を含む不純物を分離し、精製された1,2,3,4-テトラクロロヘキサフルオロブタンを得る。
工業的に生産されている1,3-ブタジエンの塩素化反応を行い、3,4-ジクロロブテン-1を得た。この3,4-ジクロロブテン-1を無溶媒下で塩素ガスにより塩素化反応を行い、得られた混合物を蒸留により分離精製を行って1,2,3,4-テトラクロロブタンを得た。これをガスクロマトグラフィ-で分析したところ、純度は99.5質量%であり、dl体/メソ体の割合は約49/51であった。
<工程(1)>
内容積10LのSUS304製(テフロン(登録商標)ライニング)反応器中に、溶媒としてテトラクロロメタン3800gを入れ、該溶媒にフッ化水素200gを溶解させ、これに上記製造例で得られた1,2,3,4-テトラクロロブタン1000gを仕込んだ。窒素ガスを圧力1.0MPaで導入して漏れテストを行った後、窒素パージを行い、撹拌しながら温度を35℃に保った。次いで、反応器内に装着されたガス導入管より液相部に、窒素ガスで希釈された50容量%フッ素ガスを圧力0.2MPa、1000ml/minで連続的に供給しながら反応を開始した。反応開始から約32時間後、反応器の排出ガス中のフッ素濃度が約49%となり、フッ素ガスがほとんど消費されなくなったところで、フッ素ガスの供給を停止して反応を終了した。溶媒を留去して得られた生成物である粗1,2,3,4-テトラクロロヘキサフルオロブタンをガスクロマトグラフィ-で分析した。分析結果を下記表1に示す。
前記工程(1)で得られた粗1,2,3,4-テトラクロロヘキサフルオロブタンを下記の条件および操作で蒸留操作を実施した。塔頂から得られた1,2,3,4-テトラクロロヘキサフルオロブタンをガスクロマトグラフィ-で分析した結果を下記表2に示す。
(蒸留条件および操作)
蒸留スケ-ル:粗1,2,3,4-テトラクロロヘキサフルオロブタン仕込み量 400g
蒸留塔 :精密蒸留装置(桐山製作所製) 充填塔 16mmφ×500mm
充填物 :ヘリパック No.2(東京特殊金網製) 約100ml
理論段数 :15段
操作条件 :圧力 4kPa;油浴温度 102~142℃;還流比 20
実施例1の工程(1)で得られた粗1,2,3,4-テトラクロロヘキサフルオロブタンを下記の条件および操作で蒸留操作を実施した。塔頂から得られた1,2,3,4-テトラクロロヘキサフルオロブタンをガスクロマトグラフィ-で分析した結果を下記表3に示す。
(蒸留条件および操作)
蒸留スケ-ル:粗1,2,3,4-テトラクロロヘキサフルオロブタン仕込み量 400g
蒸留塔 :精密蒸留装置(桐山製作所製) 充填塔 16mmφ×835mm
充填物 :ヘリパック No.2(東京特殊金網製) 約167ml
理論段数 :25段
操作条件 :圧力 4kPa;油浴温度 102~142℃;還流比 20
実施例1の工程(1)で得られた粗1,2,3,4-テトラクロロヘキサフルオロブタン400gを、第一蒸留塔として実施例1の理論段数15段の蒸留塔を用い、さらに第一蒸留塔の塔頂から得られた1,2,3,4-テトラクロロヘキサフルオロブタンを含むガスを第二蒸留塔に導入し、第二蒸留塔として実施例2の理論段数25段の蒸留塔を用いて、同様の蒸留条件等で蒸留を行った(合計理論段数40段)。第二蒸留塔の塔底から得られた1,2,3,4-テトラクロロヘキサフルオロブタンを含む留出分をガスクロマトグラフィ-で分析した結果を下記表4に示す。
実施例1の工程(1)で得られた粗1,2,3,4-テトラクロロヘキサフルオロブタンを下記の条件および操作で蒸留操作を実施した。塔頂から得られた1,2,3,4-テトラクロロヘキサフルオロブタンをガスクロマトグラフィ-で分析した結果を下記表5に示す。
(蒸留条件および操作)
蒸留スケ-ル:粗1,2,3,4-テトラクロロヘキサフルオロブタン仕込み量 400g
蒸留塔 :精密蒸留装置(桐山製作所) 充填塔 16mmφ×500mm
充填物 :ヘリパック NO.2(東京特殊金網製) 約66ml
理論段数 :10段
操作条件 :圧力 4kPa 油浴温度 102~142℃;還流比20
Claims (9)
- 1,2,3,4-テトラクロロブタンとフッ素ガスとを反応させることにより、1,2,3,4-テトラクロロヘキサフルオロブタンおよび不純物である水素含有化合物を含む反応生成物を得る工程(1)と、
前記反応生成物を単一または複数の蒸留塔に導入して蒸留することにより、前記反応生成物から前記水素含有化合物を分離し、精製された1,2,3,4-テトラクロロヘキサフルオロブタンを得る工程(2)と
を含み、前記蒸留塔の少なくとも1つが理論段数15段以上の蒸留塔であることを特徴とする1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。 - 前記蒸留塔の少なくとも1つが理論段数25段以上の蒸留塔であることを特徴とする請求項1に記載の1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。
- 前記蒸留塔が、理論段数が15段以上の第一蒸留塔と、理論段数が25段以上の第二蒸留塔とを含み、かつ、
前記工程(2)が、前記反応生成物を前記第一蒸留塔に導入して蒸留することにより、前記反応生成物から前記水素含有化合物を分離し、前記第一蒸留塔の塔頂より主として1,2,3,4-テトラクロロヘキサフルオロブタンを含む留出分を得る工程(2a)と、前記留出分を前記第二蒸留塔に導入して蒸留することにより、前記第二蒸留塔の塔底より精製された1,2,3,4-テトラクロロヘキサフルオロブタンを得る工程(2b)とを含む
ことを特徴とする請求項1に記載の1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。 - 前記水素含有化合物の少なくとも1種が、1,2,3,4-テトラクロロトリフルオロブタン、1,2,3,4-テトラクロロテトラフルオロブタンまたは1,2,3,4-テトラクロロペンタフルオロブタンであることを特徴とする請求項1に記載の1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。
- 前記工程(1)で得られる反応生成物中に含まれる1,2,3,4-テトラクロロヘキサフルオロブタンの濃度が80質量%以上であることを特徴とする請求項1に記載の1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。
- 前記工程(1)で得られる反応生成物中に含まれる水素含有化合物の濃度が7.0質量%以下であることを特徴とする請求項1に記載の1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。
- 前記工程(2)で精製された1,2,3,4-テトラクロロヘキサフルオロブタンの純度が99.0質量%以上であることを特徴とする請求項1に記載の1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。
- 前記工程(2)で精製された1,2,3,4-テトラクロロヘキサフルオロブタンの純度が99.95質量%以上であることを特徴とする請求項2に記載の1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。
- 前記工程(2b)で精製された1,2,3,4-テトラクロロヘキサフルオロブタンの純度が99.99質量%以上であることを特徴とする請求項3に記載の1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法。
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| JP2010519010A JP5430567B2 (ja) | 2008-07-01 | 2009-06-24 | 1,2,3,4−テトラクロロヘキサフルオロブタンの製造方法 |
| US13/002,223 US8404906B2 (en) | 2008-07-01 | 2009-06-24 | Process for producing 1,2,3,4-tetrachlorohexafluorobutane |
| CN200980125272.1A CN102076644B (zh) | 2008-07-01 | 2009-06-24 | 1,2,3,4-四氯六氟丁烷的制造方法 |
| KR1020117002452A KR101266609B1 (ko) | 2008-07-01 | 2009-06-24 | 1,2,3,4-테트라클로로헥사플루오로부탄의 제조 방법 |
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| WO2019116789A1 (ja) * | 2017-12-12 | 2019-06-20 | 昭和電工株式会社 | 含フッ素有機化合物の製造方法及び製造装置 |
| WO2023053744A1 (ja) * | 2021-09-30 | 2023-04-06 | 株式会社レゾナック | (e)-1,1,1,4,4,4-ヘキサフルオロ-2-ブテンの製造方法 |
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| US10995046B2 (en) * | 2017-11-30 | 2021-05-04 | Showa Denko K.K. | Process for producing 1,2,3,4-tetrachlorobutane |
| JP7758480B2 (ja) | 2020-07-01 | 2025-10-22 | 住友化学株式会社 | 塩、酸発生剤、レジスト組成物及びレジストパターンの製造方法 |
| US20230004084A1 (en) | 2021-05-06 | 2023-01-05 | Sumitomo Chemical Company, Limited | Salt, acid generator, resist composition and method for producing resist pattern |
| TW202417404A (zh) | 2022-07-28 | 2024-05-01 | 日商關東電化工業股份有限公司 | 1,2,3,4-四氯-1,1,2,3,4,4-六氟丁烷的製造方法 |
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| JP2006342059A (ja) * | 2003-09-02 | 2006-12-21 | Asahi Glass Co Ltd | クロロフルオロブタンの製造方法 |
| WO2007125975A1 (ja) * | 2006-04-28 | 2007-11-08 | Showa Denko K.K. | 1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006342059A (ja) * | 2003-09-02 | 2006-12-21 | Asahi Glass Co Ltd | クロロフルオロブタンの製造方法 |
| WO2007125975A1 (ja) * | 2006-04-28 | 2007-11-08 | Showa Denko K.K. | 1,2,3,4-テトラクロロヘキサフルオロブタンの製造方法 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019116789A1 (ja) * | 2017-12-12 | 2019-06-20 | 昭和電工株式会社 | 含フッ素有機化合物の製造方法及び製造装置 |
| US11192836B2 (en) | 2017-12-12 | 2021-12-07 | Showa Denko K.K. | Method and apparatus for producing fluorine-containing organic compound |
| WO2023053744A1 (ja) * | 2021-09-30 | 2023-04-06 | 株式会社レゾナック | (e)-1,1,1,4,4,4-ヘキサフルオロ-2-ブテンの製造方法 |
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| TW201004901A (en) | 2010-02-01 |
| KR20110038091A (ko) | 2011-04-13 |
| TWI441799B (zh) | 2014-06-21 |
| KR101266609B1 (ko) | 2013-05-22 |
| JPWO2010001774A1 (ja) | 2011-12-22 |
| CN102076644B (zh) | 2015-03-11 |
| JP5430567B2 (ja) | 2014-03-05 |
| US20110112341A1 (en) | 2011-05-12 |
| US8404906B2 (en) | 2013-03-26 |
| CN102076644A (zh) | 2011-05-25 |
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