Process for preparing perfluoroalkyl bromides
    1.
    发明授权
    Process for preparing perfluoroalkyl bromides 失效
    制备全氟烷基溴化物的方法

    公开(公告)号:US5688379A

    公开(公告)日:1997-11-18

    申请号:US424518

    申请日:1995-10-24

    IPC分类号: C07C17/20 C07C17/00

    CPC分类号: C07C17/204

    摘要: The present invention provides a process for preparing a perfluoroalkyl bromide characterized by reacting a perfluoroalkyl iodide represented by the formula C.sub.n F.sub.2n+1 I wherein n is an integer of 6 to 10 with bromine in a light-transmitting reactor with exposure to light and heating at 120.degree. to 180.degree. C. while simultaneously removing IBr resulting as a by-product by separation of a layer.

    摘要翻译: PCT No.PCT / JP93 / 01738 Sec。 371日期1995年10月24日第 102(e)日期1995年10月24日PCT 1993年11月30日PCT公布。 公开号WO94 / 12453 日期:1994年6月9日本发明提供了制备全氟烷基溴的方法,其特征在于使具有式C n F 2n + 1 I表示的全氟烷基碘(其中n为6至10的整数)与溴在具有光照的透光反应器中反应 并在120〜180℃下加热,同时除去作为副产物产生的IBr,通过分层。

    Production process of hydrofluorocarbons

    公开(公告)号:US07094934B2

    公开(公告)日:2006-08-22

    申请号:US10182820

    申请日:2001-01-31

    IPC分类号: C07C17/087

    摘要: In a process for producing a hydrogen-containing fluorinated hydrocarbon in which a halogenated hydrocarbon reaction raw material, which includes a chlorinated alkene and/or a hydrogen-containing chlorinated alkane, is subjected to a fluorination reaction with hydrogen fluoride in a liquid phase in a reactor in the presence of a fluorination catalyst to obtain a reaction mixture which includes the hydrogen-containing fluorinated hydrocarbon, the reactor to be used has a portion which is able to contact with the reaction mixture, at least a part of this portion being made of an alloy material of 18 to 20% by weight of chromium, 18 to 20% by weight of molybdenum, 1.5 to 2.2% by weight of at least one element selected from niobium and tantalum and the balance of nickel.

    Process of separating/purifying pentafluoropropane
    6.
    发明授权
    Process of separating/purifying pentafluoropropane 有权
    分离/纯化五氟丙烷的方法

    公开(公告)号:US06863780B2

    公开(公告)日:2005-03-08

    申请号:US09964364

    申请日:2001-09-28

    摘要: There is provided an azeotropic mixture having 1,1,1,3,3-pentafluoropropane and hydrogen fluoride. Further, there is provided a process of separating/purifying R-245fa and/or HF from a mixture of R-245fa and HF wherein the mixture of 1,1,1,3,3-pentafluoropropane and hydrogen fluoride is subjected to a distillation step so that a distillate is obtained which has the azeotropic mixture of 1,1,1,3,3-pentafluoropropane and hydrogen fluoride, and a bottom product is obtained which has separated/purified 1,1,1,3,3-pentafluoropropane or hydrogen fluoride.

    摘要翻译: 提供了具有1,1,1,3,3-五氟丙烷和氟化氢的共沸混合物。 此外,提供了从R-245fa和HF的混合物中分离/纯化R-245fa和/或HF的方法,其中将1,1,1,3,3-五氟丙烷和氟化氢的混合物进行蒸馏 使得得到具有1,1,1,3,3-五氟丙烷和氟化氢的共沸混合物的馏出物,得到具有分离/纯化的1,1,1,3,3-五氟丙烷的底部产物 或氟化氢。

    Process for producing 1,1,1,3,3-pentafluoropropane
    7.
    发明授权
    Process for producing 1,1,1,3,3-pentafluoropropane 失效
    制备1,1,1,3,3-五氟丙烷的方法

    公开(公告)号:US06291728B1

    公开(公告)日:2001-09-18

    申请号:US09043130

    申请日:1998-03-27

    IPC分类号: C07C1708

    CPC分类号: C07C17/206 C07C19/08

    摘要: A manufacturing method for 1,1,1,3,3-pentafluoropropane, wherein 1,1,1,3,3-pentafluoropropane (HFC-245fa) is obtained by reacting halogenated propane, for example, 1,1,1,3,3-pentachloropropane and so on, which is represented by the general formula: CX3CH2CHX2 [In the general formula, X is fluorine atom (F) or chlorine atom (Cl), and all of X can not be fluorine atoms at the same time], with anhydrous hydrofluoric acid (HF) under the presence of antimony catalyst. HFC-245fa can be obtained with high yield and economical advantages through simple process.

    摘要翻译: 1,1,1,3,3-五氟丙烷的制造方法,其中1,1,1,3,3-五氟丙烷(HFC-245fa)是通过使卤代丙烷例如1,1,1,3,3-五氟丙烷 ,3-五氯丙烷等,由通式表示:[通式中,X为氟原子(F)或氯原子(Cl),X均不能为氟原子] 与无水氢氟酸(HF)在锑催化剂存在下反应。 HFC-245fa可以通过简单的工艺获得高产量和经济的优点。

    Process for producing 1,1,1,3,3-pentafluoropropane
    8.
    发明授权
    Process for producing 1,1,1,3,3-pentafluoropropane 失效
    制备1,1,1,3,3-五氟丙烷的方法

    公开(公告)号:US06846963B2

    公开(公告)日:2005-01-25

    申请号:US10775167

    申请日:2004-02-11

    CPC分类号: C07C17/206 C07C19/08

    摘要: In a process for producing 1,1,1,3,3-pentafluoropropane which has a liquid-phase reaction step for fluorination of 1,1,1,3,3-pentahalopropane (wherein at least one of halogen atoms is not fluorine) with HF in the presence of antimony pentahalide catalyst in a reactor to obtain a reaction mixture comprising 1,1,1,3,3-pentafluoropropane and the antimony pentahalide catalyst, the fluorination is conducted at a reaction temperature less than 50° C.

    摘要翻译: 在制备1,1,1,3,3-五氟丙烷的方法中,其具有用于氟化1,1,1,3,3-五氢丙烷的液相反应步骤(其中卤素原子中的至少一个不是氟) 在反应器中在五锑酸五乙酯催化剂存在下用HF进行反应,得到包含1,1,1,3,3-五氟丙烷和五氢五锑化物催化剂的反应混合物,氟化反应温度低于50℃

    Method for 1, 1, 1, 3, 3-pentafluoropropane
    9.
    发明授权
    Method for 1, 1, 1, 3, 3-pentafluoropropane 有权
    纯化1,1,1,3,3-五氟丙烷的方法

    公开(公告)号:US06191328B1

    公开(公告)日:2001-02-20

    申请号:US09202824

    申请日:1998-12-22

    IPC分类号: C07C1738

    摘要: HFC-245fa is effectively separated from the mixture comprising 1,1,1,3,3-pentafluoropropane (HFC-245fa) and HF through a purification process comprising contacting at least one extraction agent selected from the group consisting of (a) a compound corresponds to the general formula (I): CxFyHz, (b) a compound corresponds to the general formula (II): R1R2R3N, (c) an compound corresponds to the general formula (III): R4OR5 and (d) a compound corresponds to the general formula (IV): ClClmHn with a mixture comprising 1,1,1,3,3-pentafluoropropane and hydrogen fluoride so as to form a liquid mixture and separating the liquid mixture into two liquid layers, followed by obtaining an extraction agent phase including HFC-245fa and the extraction agent as the main components, and separatively recovering HFC-245fa from the extraction agent phase.

    摘要翻译: HFC-245fa通过纯化方法从包含1,1,1,3,3-五氟丙烷(HFC-245fa)和HF的混合物中有效地分离,包括使至少一种萃取剂与(a)化合物 对应于通式(I):CxFyHz,(b)化合物对应于通式(II):R1R2R3N,(c)化合物对应于通式(III):R4OR5和(d)化合物对应于 通式(IV):ClClmHn与包含1,1,1,3,3-五氟丙烷和氟化氢的混合物形成液体混合物并将液体混合物分离成两个液体层,然后获得提取剂相 包括HFC-245fa和萃取剂为主要成分,并从提取剂相中分离回收HFC-245fa。