Azeotrope of HF and 1,1,1-trifluro-3-chloro-2-propene
    1.
    发明公开
    Azeotrope of HF and 1,1,1-trifluro-3-chloro-2-propene 有权
    共沸混合物Gemisch bestehend aus HF和1,1,1-三氟-3-氯-2-丙烯

    公开(公告)号:EP0940382A1

    公开(公告)日:1999-09-08

    申请号:EP99301469.5

    申请日:1999-02-26

    CPC classification number: C07C21/18 C07C17/00 C07C17/38 C07C17/383

    Abstract: An azeotrope containing HF and 1,1,1-trifluoro-3-chloro-2-propene (1233zd) is provided, as are methods for separating this azeotrope from mixtures of HF and 1233zd which are HF-rich or 1233zd-rich and methods for making use of the azeotrope and separation methods to improve processes for preparing 1233zd, an intermediate used in the preparation of 1,1,1,3,3,-pentafluoropropane (245f), which is a known foam blowing agent and refrigerant.

    Abstract translation: 提供了含有HF和1,1,1-三氟-3-氯-2-丙烯(1233zd)的共沸物,从HF和1233zd的HF和1233zd富集的混合物中分离出这种共沸物的方法,以及方法 利用共沸物和分离方法改进制备1233zd的方法,该制备方法是制备作为已知的泡沫发泡剂和制冷剂的1,1,1,3,3-五氟丙烷(245f)的中间体。

    "> Preparation of 1-chloro-2,2-difluoroethane (
    3.
    发明公开
    Preparation of 1-chloro-2,2-difluoroethane ("142") 审中-公开
    Herstellung von 1-Chlor-2,2-difluorethan(“142”)

    公开(公告)号:EP1008574A1

    公开(公告)日:2000-06-14

    申请号:EP99309816.9

    申请日:1999-12-07

    CPC classification number: C07C17/21 C07C19/12

    Abstract: A process for the preparation of 1-chloro-2,2-difluoroethane ("142") wherein 1,2-dichloroethene ("1130") is fluorinated in the gas phase in the presence of a catalyst which is a supported or unsupported fluorinated salt of one or more of chromium, iron, niobium, nickel, antimony, tin, tantalum or titanium. 142 is a known foam blowing agent.

    Abstract translation: 一种制备1-氯-2,2-二氟乙烷(“142”)的方法,其中1,2-二氯乙烯(“1130”)在催化剂存在下在气相中氟化,所述催化剂是负载或未负载的氟化 铬,铁,铌,镍,锑,锡,钽或钛中的一种或多种的盐。 142是已知的泡沫发泡剂。

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