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    • 2. 发明申请
      WO9951556A3 PROCESSES FOR THE PURIFICATION AND USE OF 2,2-DICHLORO-1,1,1,3,3,3-HEXAFLUOROPROPANE AND AZEOTROPES THEREOF WITH HF 审中-公开
    • PROCESSES FOR THE PURIFICATION AND USE OF 2,2-DICHLORO-1,1,1,3,3,3-HEXAFLUOROPROPANE AND AZEOTROPES THEREOF WITH HF
    • 用HF提纯和使用2,2-二氯-1,1,1,3,3,3-六氟丙烷及其共沸物的方法
    • WO9951556A3
    • 1999-11-18
    • PCT/US9907224
    • 1999-04-01
    • DU PONT , MILLER RALPH NEWTON , RAO V N MALLIKARJUNA , SWEARINGEN STEVEN H
    • MILLER RALPH NEWTON , RAO V N MALLIKARJUNA , SWEARINGEN STEVEN H
    • C01B7/19 , C07C17/23 , C07C17/38 , C07C17/383 , C07C19/10
    • C07C19/10 , C01B7/195 , C01B7/196 , C07C17/23 , C07C17/38 , Y02P20/582 , C07C19/08
    • A process is disclosed for the separation of a mixture of HF and CF3CC12CF3. The process involves placing the mixture in a separation zone at a temperature of from about 0 DEG C to about 100 DEG C and at a pressure sufficient to maintain the mixture in the liquid phase, whereby an organic-enriched phase comprising less than 69 mole percent HF is formed as the bottom layer and an HF-enriched phase comprising more than 90 mole percent HF is formed as the top layer. The organic-enriched phase can be withdrawn from the bottom of the separation zone and subjected to distillation in a distillation column to recover essentially pure CF3CC12CF3. The distillate comprising HF and CF3CC12CF3 can be removed from the top of the distillation column, while essentially pure CF3CC12CF3 can be recovered from the bottom of the distillation column. Also, the HF-enriched phase can be withdrawn from the top of the separation zone and subjected to distillation in a distillation column. The distillate comprising HF and CF3CC12CF3 can be removed from the top of the distillation column while essentially pure HF can be recovered from the bottom of the distillation column. If desired, the two distillates can be recycled to the separation zone. Also disclosed are compositions of hydrogen fluoride in combination with an effective amout of CF3CC12CF3 to form an azeotrope or azeotrope-like composition with hydrogen fluoride. Included are compositions containing from about 13.8 to 31.3 mole percent CF3CC12CF3. Also disclosed is a process for producing 1,1,1,3,3,3-hexafluoropropane from a mixture comprising HF and CF3CC12CF3. This process is characterized by preparing essentially pure CF3CC12CF3 as indicated above, and reacting the CF3CC12CF3 with hydrogen. Another process for producing 1,1,1,3,3,3-hexafluoropropane disclosed herein is characterized by contacting an azeotrope of CF3CC12CF3 as indicated above with hydrogen and reacting the CF3CC12CF3 with hydrogen in the presence of HF.
    • 公开了一种分离HF和CF3CC12CF3混合物的方法。 该方法包括将混合物置于温度为约0℃至约100℃的分离区中并且压力足以将混合物保持在液相中，由此得到包含小于69摩尔％的有机相富集相 HF形成为底层，并且包含超过90摩尔％HF的HF富集相形成为顶层。 有机相富集相可以从分离区的底部排出并在蒸馏塔中进行蒸馏以回收基本上纯的CF 3 CCl 2 CF 3。 包含HF和CF 3 CCl 2 CF 3的馏出物可以从蒸馏塔顶部排出，而基本上纯的CF 3 CCl 2 CF 3可以从蒸馏塔底部回收。 而且，富含HF的相可以从分离区的顶部排出并在蒸馏塔中进行蒸馏。 包含HF和CF 3 CCl 2 CF 3的馏出物可以从蒸馏塔顶部除去，而基本上纯的HF可以从蒸馏塔底部回收。 如果需要，两种馏分可以循环到分离区。 还公开了氟化氢与有效量的CF 3 CCl 3 CF 3组合以与氟化氢形成共沸或类共沸组合物的组合物。 包括含有约13.8至31.3摩尔％CF 3 CCl 2 CF 3的组合物。 还公开了由包含HF和CF 3 CCl 2 CF 3的混合物生产1,1,1,3,3,3-六氟丙烷的方法。 该方法的特征在于如上所述制备基本上纯的CF 3 CCl 2 CF 3，并使CF 3 CCl 2 CF 3与氢反应。 本文公开的另一种制备1,1,1,3,3,3-六氟丙烷的方法的特征在于使如上所示的CF 3 CCl 2 CF 3的共沸物与氢气接触，并使CF 3 CCl 2 CF 3与氢气在HF存在下反应。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 3. 发明申请
      WO1997005089A1 PROCESS FOR THE MANUFACTURE OF HALOCARBONS AND SELECTED COMPOUNDS AND AZEOTROPES WITH HF 审中-公开
    • PROCESS FOR THE MANUFACTURE OF HALOCARBONS AND SELECTED COMPOUNDS AND AZEOTROPES WITH HF
    • 用HF制备HALOCARBONS和选择的化合物和AZEOOPOPES的方法
    • WO1997005089A1
    • 1997-02-13
    • PCT/US1996012547
    • 1996-07-31
    • E.I. DU PONT DE NEMOURS AND COMPANY , BAKER, Ralph, Thomas , MILLER, Ralph, Newton , PETROV, Viacheslave, Alexandrovich , RAO, Velliyur, Nott, Mallikarjuna , SIEVERT, Allen, Capron
    • E.I. DU PONT DE NEMOURS AND COMPANY
    • C07C17/278
    • C07C19/10 , C07C17/206 , C07C17/275 , C07C17/278 , C07C17/38 , C07C17/386 , C07C19/08 , Y02P20/582 , C07C19/01 , C07C19/16
    • A liquid phase process is disclosed for producing halogenated alkane adducts of the formula: CAR R CBR R (where A, B, R , R , R , and R are as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR R ==CR R in a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing: (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. New compounds disclosed include CF3CF2CCl2CH2CCl3, CF3CCl2CH2CH2Cl and CF3CCl2CH2CHClF. These compounds are useful as intermediates for producing hydrofluorocarbons. Azeotropes of CClF2CH2CF3 with HF and azeotropes of CF3CH2CHF2 with HF are also disclosed; as are processes for producing such azeotropes. A process for purification of certain hydrofluorocarbons and/or chloroprecursors thereof from mixtures of such compounds with HF is also disclosed.
    • 公开了用于制备下式的卤化烷烃加合物的液相方法：CAR 1 R 2 CBR 3 R 4（其中A，B，R 1，R 2，R 3 >和R 4如说明书中所定义），其包括使相应的卤化烷烃AB与相应的烯烃CR 1 R 2 = CR 3 R 4在二腈 或环状碳酸酯溶剂，其将反应混合物分成两个液相，并且在催化剂体系存在下包含：（i）至少一种选自一价和二价铜的催化剂; 和任选地（ii）选自在杂环中含有至少一个碳 - 氮双键的芳族或脂族杂环化合物的促进剂。 当形成氢氯氟烃时，可以通过氢氯氟烃与HF反应来降低氯含量。 所公开的新化合物包括CF 3 CF 2 CCl 2 CH 2 ClCl 3，CF 3 CCl 2 CH 2 CH 2 Cl和CF 3 CCl 2 CH 2 CHClF。 这些化合物可用作生产氢氟烃的中间体。 还公开了CClF 2 CH 2 CF 3与HF的共沸物和CF 3 CH 2 CHF 2与HF的共沸物质; 生产这种共沸物的方法也是如此。 还公开了从这些化合物与HF的混合物中纯化某些氢氟烃和/或其氯前体的方法。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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