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    • 7. 发明授权
    • Process for the purification of sulfonated aryl phosphines
    • 磺化芳基膦的纯化方法
    • US4623490A
    • 1986-11-18
    • US770303
    • 1985-08-27
    • Ludger BextenBoy CornilsDieter Kupies
    • Ludger BextenBoy CornilsDieter Kupies
    • B01J38/00C07F9/50C07F15/00C07C143/24
    • C07F9/5095C07F9/5054
    • A process for the purification of salts of at least one member of the group consisting of diphenylphosphine-phenyl-m-sulfonic acid, phenylphosphine-di-(m-phenylsulfonic acid) and triphenylphosphine-tri-(m-sulfonic acid) from aqueous solutions thereof comprising adding at least a molar equivalent amount of at least one member of the group consisting of di-(n-pentyl)-amine, di-(n-hexyl)-amine and water-soluble salts of said amines to an aqueous solution containing at least one member of the group consisting diphenylphosphine-phenyl-m-sulfonic acid, phenylphosphine-di-(m-phenylsulfonic acid), triphenylphosphine-tri(m-sulfonic acid) and salts thereof to adjust the pH value to .ltoreq.7, recovering the precipitate, washing the precipitate and dissolving the same in an aqueous basic solution.
    • 从水溶液中纯化二苯基膦 - 苯基间磺酸,苯基膦 - 二 - (间苯磺酸)和三苯基膦 - 三 - (间 - 磺酸)中的至少一种成员的盐的方法 其包括将至少一种摩尔当量的所述胺的二(正戊基) - 胺,二 - (正己基) - 胺和水溶性盐组成的组中的至少一种添加到水溶液中 含有二苯基膦 - 苯基 - 间磺酸,苯基膦 - 二 - (间苯磺酸),三苯基膦 - 三(m-磺酸)及其盐中的至少一个成员以将pH值调节至< 7,回收沉淀物,洗涤沉淀物并将其溶于碱性水溶液中。