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    • 7. 发明授权
    • Purification of 1,1,1,3,3-pentafluorobutane
    • 1,1,1,3,3-五氟丁烷的纯化
    • US06500994B1
    • 2002-12-31
    • US09786589
    • 2001-06-08
    • Carsten BroschHeinz GressMatthias Rieland
    • Carsten BroschHeinz GressMatthias Rieland
    • C07C1908
    • C07C17/389C01B7/0718C01B7/197C07C17/38C07C17/395C07C19/08
    • 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.
    • 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。