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    • 4. 发明申请
    • PROCESS FOR PRODUCING HEXAFLUORO-1,3-BUTADIENE
    • 制备十六烷基-1,3-丁二烯的方法
    • US20090216053A1
    • 2009-08-27
    • US12298863
    • 2007-04-25
    • Hiromoto OhnoToshio Ohi
    • Hiromoto OhnoToshio Ohi
    • C07C17/23C07C17/20
    • C07C21/20C07C17/02C07C17/04C07C17/10C07C17/23C07C17/25C07C17/358C07C17/383C07C21/09C07C19/01C07C19/10C07C21/21
    • Disclosed is a process for producing hexafluoro-1,3-butadiene, which is used for an etching gas capable of being used in fine processing for semiconductors, safely in industrialization and at low cost economically. Specifically disclosed is a process for producing hexafluoro-1,3-butadiene comprises (1) a step comprising allowing a compound having four carbon atoms each which bonds to an atom selected from the group consisting of a bromine atom, an iodine atom and a chlorine atom, to react with a fluorine gas in the presence of a diluting gas in a gas phase, thereby preparing a mixture containing a product (A), and (2) a step comprising eliminating halogens excluding a fluorine atom with a metal from the product (A) prepared in the step (1) in the presence of a solvent, thereby preparing a mixture containing hexafluoro-1,3-butadiene.
    • 公开了一种用于半导体精细加工的蚀刻气体的六氟-1,3-丁二烯的制造方法,工业化安全且经济地低成本。 具体公开了六氟-1,3-丁二烯的制造方法,其特征在于,包括(1)使具有与选自溴原子,碘原子和氯原子的原子键合的四个碳原子的化合物 在气相中在稀释气体的存在下与氟气反应,由此制备含有产物(A)的混合物,和(2)包括用产物中的金属除去氟原子的卤素的步骤 (A)在溶剂存在下制备,从而制备含有六氟-1,3-丁二烯的混合物。
    • 9. 发明授权
    • Fluorine-containing compound purification method
    • 含氟化合物的纯化方法
    • US08692038B2
    • 2014-04-08
    • US13504335
    • 2010-10-26
    • Hiromoto OhnoToshio OhiKatsutoshi Morinaka
    • Hiromoto OhnoToshio OhiKatsutoshi Morinaka
    • C07C17/38
    • C07C17/383C01B7/20C07C17/386C07C19/08
    • There is provided a fluorine-containing compound purification method for obtaining a high-purity fluorine-containing compound by efficiently separating and removing hydrogen chloride from a fluorine-containing compound that contains hydrogen chloride, i.e., from a crude fluorine-containing compound. The fluorine-containing compound purification method of the present invention comprises the following steps (1) and (2) in this order: step (1): a step of adding dimethyl ether to a crude fluorine-containing compound that contains a fluorine-containing compound and hydrogen chloride in a molar ratio (dimethyl ether (mol)/hydrogen chloride (mol)) of dimethyl ether to hydrogen chloride being 1.3 or more to prepare a mixture (1) of the crude fluorine-containing compound and dimethyl ether; and step (2): a step of separating and removing a mixture (2) of hydrogen chloride and dimethyl ether from the mixture (1).
    • 提供一种通过从含有氯化氢的含氟化合物即从粗含氟化合物中有效分离和除去氯化氢来获得高纯度含氟化合物的含氟化合物净化方法。 本发明的含氟化合物的纯化方法依次包括以下步骤(1)和(2):步骤(1):将二甲醚加入含氟的含氟化合物的步骤 化合物和二氯甲烷与氯化氢摩尔比(二甲醚(摩尔)/氯化氢(摩尔))的氯化氢为1.3以上,制备粗制含氟化合物和二甲醚的混合物(1) 和步骤(2):从混合物(1)中分离和除去氯化氢和二甲醚的混合物(2)的步骤。