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公开(公告)号:US06392106B1
公开(公告)日:2002-05-21
申请号:US09509989
申请日:2000-04-05
IPC分类号: C07C1708
CPC分类号: C07C17/38 , C07C17/206 , C07C17/383 , Y02P20/582 , C07C19/08 , C07C19/12
摘要: A process for producing 1,1,1,2,2-pentafluoroethane by fluorinating with hydrogen fluoride at least one of 2,2-dichloro-1,1,1-trifluoroethane and 2-chloro-1,1,1,2-tetrafluoroethane as a starting material, the process being characterized by separating the reaction mixture resulting from the fluorination into a product portion A mainly containing 1,1,1,2,2-pentafluoroethane and a product portion B mainly containing 2,2-dichloro-1,1,1-trifluoroethane, 2-chloro-1,1,1,2-tetrafluoroethane and hydrogen fluoride, removing a fraction mainly containing 2,2-dichloro-1,1,1,2-tetrafluoroethane from the product portion B, and recycling the rest of the product portion B as part of feedstocks for fluorination. According to the process of the invention, the amount of CFC-115 contained in the target HFC-125 can be remarkably reduced through a simplified procedure.
摘要翻译: 一种通过用氟化氢氟化2,2-二氯-1,1,1-三氟乙烷和2-氯-1,1,1,2-四氟乙烷中的至少一种制备1,1,1,2,2-五氟乙烷的方法, 四氟乙烷为原料,该方法的特征在于将由氟化得到的反应混合物分离成主要含有1,1,1,2,2-五氟乙烷的产物部分A和主要含有2,2-二氯 - 1,1,1-三氟乙烷,2-氯-1,1,1,2-四氟乙烷和氟化氢,从产物部分B中除去主要含有2,2-二氯-1,1,1,2-四氟乙烷的馏分 ,并将产物部分B的其余部分作为用于氟化的原料的一部分进行再循环。根据本发明的方法,目标HFC-125中所含的CFC-115的量可以通过简化的程序显着降低。
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公开(公告)号:US06268541B1
公开(公告)日:2001-07-31
申请号:US09509984
申请日:2000-04-05
IPC分类号: C07C1708
CPC分类号: B01J27/132 , C07C17/206 , Y02P20/582 , C07C19/08
摘要: The invention provides a process for the preparation of 1,1,1,2,2-pentafluoroethane by fluorinating in the gas phase a halogenated hydrocarbon feedstock containing 2-chloro-1,1,1,2-tetrafluoroethane with hydrogen fluoride, the process being characterized in that: (i) a fluorinated chromium oxide obtained by fluorinating a chromium oxide represented by the formula: CrOm (1.5
摘要翻译: 本发明提供了一种通过在气相中氟化氟化的含有2-氯-1,1,1,2-四氟乙烷的卤代烃原料来制备1,1,1,2,2-五氟乙烷的方法,该方法 其特征在于:(i)通过氟化由式CrOm(1.5
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公开(公告)号:US06455745B1
公开(公告)日:2002-09-24
申请号:US09743468
申请日:2001-01-10
IPC分类号: C07C1708
CPC分类号: C07C17/206 , B01J27/132 , C07C17/21 , C07C19/08
摘要: Fluorochromium oxide having a fluorine content of not less than 30 wt. % is used for the fluorination reaction. To provide a manufacturing method for fluorine-containing ethane which contains 1,1,1,2,2-pentafluoroethane as the main component in which the reaction can be performed while controlling the generation of CFCs to the greatest possible extent by fluorinating at least on selected from the group composed of tetrachloroethylene, 2,2-dichloro-1,1,1-trifluoroethane and 2-chloro-1,1,1,2-tetrafluoroethane with hydrogen fluoride.
摘要翻译: 氟含量不低于30重量%的氟化铬 %用于氟化反应。为了提供含有1,1,1,2,2-五氟乙烷作为主要成分的含氟乙烷的制造方法,其中可以进行反应,同时控制CFC的产生 通过至少在选自四氟乙烯,2,2-二氯-1,1,1-三氟乙烷和2-氯-1,1,1,2-四氟乙烷的组中氟化氢氟化物的最大可能程度。
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公开(公告)号:US5185483A
公开(公告)日:1993-02-09
申请号:US812277
申请日:1991-12-23
申请人: Hirokazu Aoyama , Takashi Yasuhara , Satoru Kono , Satoshi Koyama , Souichi Ueda
发明人: Hirokazu Aoyama , Takashi Yasuhara , Satoru Kono , Satoshi Koyama , Souichi Ueda
IPC分类号: B01J27/12 , C07B61/00 , C07C17/278 , C07C19/10
CPC分类号: C07C17/278
摘要: 1,1,1,2,2-Pentafluoro-3,3-dichloropropane and 1,1,2,2,3-pentafluoro-1,3-dichloropropane are prepared in pure forms by reacting dichlorofluoromethane and tetrafluoroethylene, or chloroform, difluorochloromethane and tetrafluoroethylene in the presence of a catalyst comprising a halogenated zirconium of the formula:ZrCl.sub.x F.sub.y (I)wherein x and y are numbers which satisfy the relationships x+y=4, 0
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公开(公告)号:US5177274A
公开(公告)日:1993-01-05
申请号:US743686
申请日:1991-08-12
申请人: Hirokazu Aoyama , Satoru Kono , Satoshi Koyama
发明人: Hirokazu Aoyama , Satoru Kono , Satoshi Koyama
IPC分类号: C07C17/278
CPC分类号: C07C17/278
摘要: 1,1,1,2,2-Pentafluoro-3,3-dichloropropane and 1,1,2,2,3-pentafluoro-1,3-dichloropropane are prepared by reacting dichlorofluoromethane and tetrafluoroethylene in a solvent in the presence of a catalyst with improved conversion and selectivity.
摘要翻译: 1,1,1,2,2-五氟-3,3-二氯丙烷和1,1,2,2,3-五氟-1,3-二氯丙烷是通过使二氯氟甲烷和四氟乙烯在溶剂中在 催化剂具有改进的转化率和选择性。
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