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    • 52. 发明授权
    • Liquid phase catalytic fluorination of hydrochlorocarbon and hydrochlorofluorocarbon
    • 液相催化氟化氟氯烃和氢氯氟烃
    • US06689924B1
    • 2004-02-10
    • US09467869
    • 1999-12-20
    • Alagappan ThenappanHsueh S. TungRobert L. Bell
    • Alagappan ThenappanHsueh S. TungRobert L. Bell
    • C07C1700
    • C07C17/206C07C17/00C07C17/087Y10S526/906Y10S526/913C07C19/08
    • A process for the catalytic fluorination of hydrochlorocarbons and hydrochlorofluorocarbons in the liquid phase. The process is useful for fluorinating hydrochloropropanes, hydrochlorofluoropropanes, hydrochloropropenes and hydrochlorofluoropropenes and most particularly useful for fluorinating 1,1,1,3,3-pentachloropropane to 1,1,1,3,3-pentafloropropane. Suitable catalysts include (i) a pentavalent molybdenum halide; (ii) a tetravalent tin halide; (iii) a tetravalent titanium halide; (iv) a mixture of a pentavalent tantalum halide with a tetravalent tin halide; (v) a mixture of a pentavalent tantalum halide with a tetravalent titanium halide; (vi) a mixture of a pentavalent niobium halide with a tetravalent tin halide; (vii) a mixture of a pentavalent niobium halide with a tetravalent titanium halide; (viii) a mixture of a pentavalent antimony halide with a tetravalent tin halide; (ix) a mixture of a pentavalent antimony halide with a tetravalent titanium halide; (x) a mixture of a pentavalent molybdenum halide with a tetravalent tin halide; (xi) a mixture of a pentavalent molybdenum halide with a tetravalent titanium halide and (xii) a mixture of a pentavalent antimony halide with a trivalent antimony halide. Products of this process are useful in a variety of applications including solvents, blowing agents, and refrigerants.
    • 在液相中氢氯碳氢化合物和氢氯氟烃的催化氟化的方法。 该方法可用于氟化氢氯丙烷,氢氯氟丙烷,氢氯丙烯和氢氯氟丙烯,最特别用于将1,1,1,3,3-五氯丙烷氟化为1,1,1,3,3-五氟丙烷。 合适的催化剂包括(i)五价钼卤化物; (ii)四价卤化锡; (iii)四价钛卤化物; (iv)五价卤化钽与四价卤化锡的混合物; (v)五价钽卤化物与四价钛卤化物的混合物; (vi)五价铌卤化物与四价卤化锡的混合物; (vii)五价铌卤化物与四价钛卤化物的混合物; (viii)五价锑卤化物与四价卤化锡的混合物; (ix)五价锑卤化物与四价钛卤化物的混合物; (x)五价钼卤化物与四价卤化锡的混合物; (xi)五价钼卤化物与四价卤化钛的混合物,(xii)五价锑卤化物与三价卤化锑的混合物。 该方法的产品可用于各种应用,包括溶剂,发泡剂和制冷剂。
    • 58. 发明授权
    • Purification of 1,1-dichloro-1-fluoroethane
    • 1,1-二氯-1-氟乙烷的纯化
    • US4950816A
    • 1990-08-21
    • US451074
    • 1989-12-15
    • Hsueh S. TungAddison M. Smith
    • Hsueh S. TungAddison M. Smith
    • B01J20/20C07C17/20C07C17/389C07C19/08
    • C07C17/389
    • The present invention provides a process for the purification of 1,1-dichloro-1-fluoroethane comprising the steps of: (a) reacting anhydrous hydrogen fluoride with 1,1,1-trichloroethane or vinylidene chloride containing dichloroacetylene to form 1,1-dichloro-1-fluoroethane; and (b) passing the 1,1-dichloro-1-fluoroethane through activated carbon to substantially remove unsaturated impurities. In particular, the present process reduces the amounts of dichloroacetylene and vinylidene chloride in the 1,1-dichloro-1-fluoroethane product so as to meet the current specifications set forth by the Panel for Advancement of Fluorocarbon Test.The purified 1,1-dichloro-1-fluoroethane product is useful as a blowing agent and a solvent.
    • 本发明提供1,1-二氯-1-氟乙烷的纯化方法,包括以下步骤:(a)使无水氟化氢与含有二氯乙炔的1,1,1-三氯乙烷或1,1-二氯乙烯反应, 二氯-1-氟乙烷; 和(b)使1,1-二氯-1-氟乙烷通过活性炭,以基本上除去不饱和杂质。 特别地,本方法减少了1,1-二氯-1-氟乙烷产物中的二氯乙炔和偏二氯乙烯的量,以符合氟碳试验提出的现行规范。 纯化的1,1-二氯-1-氟乙烷产物可用作发泡剂和溶剂。