Process of preparing sulfuryl fluoride
    2.
    发明授权
    Process of preparing sulfuryl fluoride 失效
    硫酰氟的制备方法

    公开(公告)号:US06238642B1

    公开(公告)日:2001-05-29

    申请号:US09437258

    申请日:1999-11-10

    IPC分类号: C01B1745

    CPC分类号: C01B17/4576

    摘要: Sulfuryl fluoride is prepared selectively and in a high yield from sulfur dioxide and elemental fluorine in the presence of an alkali fluoride and hydrogen fluoride. The preferred alkali fluoride is potassium fluoride.

    摘要翻译: 在碱金属氟化物和氟化氢的存在下,从二氧化硫和元素氟选择性地以高产率制备了硫酰氟。 优选的碱金属氟化物是氟化钾。

    Purification of 1,1,1,3,3-pentafluorobutane
    7.
    发明授权
    Purification of 1,1,1,3,3-pentafluorobutane 有权
    1,1,1,3,3-五氟丁烷的纯化

    公开(公告)号:US06500994B1

    公开(公告)日:2002-12-31

    申请号:US09786589

    申请日:2001-06-08

    IPC分类号: C07C1908

    摘要: A process for purification of 1,1,1,3,3-pentafluorobutane (HFC-365mfc) containing a decreased amount of hydrogen chloride, hydrogen fluoride and/or unsaturated impurities. To this end crude 1,1,1,3,3-pentafluorobutane is treated in the liquid phase with a solid, inorganic sorption agent and/or with diatomic molecules which and to C—C multiple bonds. The product to be purified is preferably treated with elemental fluorine. The contents of hydrogen chloride and hydrogen can each be decreased to below 1 ppm. The content of unsaturated (chlorine)-fluorine-compounds can be decreased to below 20 ppm, and the content of unsaturated C2 compounds can be decreased to below 10 ppm. It has also been discovered that fluorotrichloroethylene can be used as a control substance to monitor the purification of 1,1,1,3,3-pentafluorobutane.

    摘要翻译: 一种纯化含有减少量的氯化氢,氟化氢和/或不饱和杂质的1,1,1,3,3-五氟丁烷(HFC-365mfc)的方法。 为此,粗液1,1,1,3,3-五氟丁烷在液相中用固体无机吸附剂和/或与C-C多重键的双原子分子进行处理。 待纯化的产物优选用元素氟处理。 氯化氢和氢气的含量各自可以降低到1ppm以下。 不饱和(氯) - 氟化合物的含量可以降低到20ppm以下,不饱和C2化合物的含量可以降低到10ppm以下。 还已经发现,氟三氯乙烯可以用作对照物质来监测1,1,1,3,3-五氟丁烷的纯化。