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    • 4. 发明公开
    • AZEOTROPIC OR AZEOTROPE LIKE COMPOSITION, AND METHOD FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE OR CHLOROMETHANE
    • 共沸物或AZEOPEOTROPÄHNLICHE组合物及其制备方法的2,3,3,3-四氟丙烯或氯甲烷
    • EP2837613A1
    • 2015-02-18
    • EP13775958.5
    • 2013-04-05
    • Asahi Glass Company, Limited
    • FURUTA, ShojiOTSUKA, Tetsuo
    • C07C21/18C07C17/383C07C19/03C09K5/04
    • C07C17/383C09K5/044C09K5/045C09K2205/122C09K2205/32C07C21/18C07C19/03
    • To provide a method for efficiently separating 2,3,3,3-tetrafluoropropene (HFO-1234yf) and chloromethane (R40) from a composition comprising HFO-1234yf and R40. An azeotrope-like composition comprising from 58 to 78 mol% of HFO-1234yf and from 22 to 42 mol% of R40, and a method for producing HFO-1234yf, which comprises steps of distilling an initial mixture containing HFO-1234yf in a content exceeding 63 mol% in the total amount of HFO-1234yf and R40, thereby to separate the initial mixture into a first fraction in which the content of HFO-1234yf in the total amount of HFO-1234yf and R40 is lower than the content of HFO-1234yf in the total amount of HFO-1234yf and R40 in the initial mixture, and a second fraction in which the content of HFO-1234yf in the total amount of HFO-1234yf and R40 is higher than the content of HFO-1234yf in the total amount of HFO-1234yf and R40 in the initial mixture, and then obtaining HFO-1234yf having a reduced R40 concentration, from the second fraction.
    • 要有效地从包含HFO-1234yf和R40的组合物中分离2,3,3,3-四氟丙烯(HFO-1234yf)的和氯甲烷(R40)提供的方法。 一种共沸状组合物,包括从58至78摩尔%的HFO-1234yf的和为22〜42摩尔%的R40的,以及用于生产HFO-1234yf的方法,其包括在一内容包含HFO-1234yf的初始混合物中蒸馏的工序的方法 超过63摩尔%的HFO-1234yf和R40的总量,从而将初始混合物分离成第一级分在哪个HFO-1234yf的在HFO-1234yf和R40的合计量的含量比HFO的含量低 -1234yf在初始混合物HFO-1234yf和R40的总量,和第二馏分在哪个HFO-1234yf的在HFO-1234yf和R40的合计量的含量比HFO-1234yf的在内容更高 在初始混合物中HFO-1234yf和R40的总量,然后获得HFO-1234yf的具有降低的浓度R40,从第二级分。
    • 9. 发明公开
    • PROCESS FOR PRODUCTION OF FLUOROALKYL IODIDE
    • VERFAHREN ZUR HERSTELLUNG VON FLUORALKYL-IODID
    • EP2578560A1
    • 2013-04-10
    • EP11789901.3
    • 2011-06-02
    • Asahi Glass Company, Limited
    • OTSUKA, TetsuoFURUTA, Shoji
    • C07C17/281C07C19/16
    • C07C17/202C07C17/272C07C17/278C07C19/16
    • To provide a process for producing a fluoroalkyl iodide, whereby the selectivity for a fluoroalkyl iodide having a desired degree of polymerization is high and the productivity is high. A process for producing a fluoroalkyl iodide (2) represented by R f CF 2 CF 2 I (wherein R f is a fluoroalkyl group having at most 4 carbon atoms), which comprises reacting a fluoroalkyl iodide (1) represented by R f I with tetrafluoroethylene in the presence of a radical initiator, wherein a first reaction step of supplying and reacting tetrafluoroethylene and a radical initiator to the fluoroalkyl iodide (1), is followed by repeating (n-1) times (provided that n is an integer of at least 3) a subsequent reaction step of supplying and reacting a radical initiator, or a radical initiator and tetrafluoroethylene, to a reaction mixture (1) formed in the first reaction step.
    • 为了提供一种制备氟代烷基碘的方法,由此对具有所需聚合度的氟代烷基碘的选择性高,生产率高。 一种制备由R f CF 2 CF 2 I(其中R f为至多4个碳原子的氟烷基)表示的氟烷基碘化物(2)的方法,其包括将由R f I表示的氟代烷基碘(1)与 四氟乙烯在自由基引发剂的存在下反应,其中将四氟乙烯和自由基引发剂供应和反应到氟代烷基碘(1)的第一反应步骤之后是重复(n-1)次(条件是n是在 至少3)随后的反应步骤,其将自由基引发剂或自由基引发剂和四氟乙烯供应到反应混合物(1)中并在第一反应步骤中形成。