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    • 47. 发明授权
    • Process for the preparation of para-amino-diphenylamine
    • 对氨基二苯胺的制备方法
    • US4404401A
    • 1983-09-13
    • US14672
    • 1979-02-23
    • Hans G. ZengelManfred Bergfeld
    • Hans G. ZengelManfred Bergfeld
    • C07C83/02
    • C07C209/40
    • An improved process for the preparation of para-amino diphenylamine in which para-nitroso-diphenylhydroxylamine is catalytically hydrogenated in the presence of an organic solvent and one or more metal components selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium, and platinum, and their sulfidic compounds, at temperatures from 20.degree. to 200.degree. C., is disclosed. The improvement comprises utilizing as the organic solvent one or more members of the group consisting of aniline and aniline derivatives containing ring-alkyl groups, N-alkyl groups, or a combination thereof, wherein the ring-alkyl groups contain a total of 1 to 6 carbon atoms and the N-alkyl groups contain from 1 to 6 carbon atoms.
    • 一种改进的对氨基二苯胺的制备方法,其中对 - 亚硝基 - 二苯基羟胺在有机溶剂和一种或多种选自钌,铑,钯,锇,铱的金属组分的存在下催化氢化, 和铂,以及它们的硫化合物在20℃至200℃的温度下进行了公开。 改进之处在于使用作为有机溶剂的一种或多种由苯胺和含有环烷基的苯胺衍生物,N-烷基或其组合组成的组,其中环烷基含有总共1至6个 碳原子和N-烷基含有1至6个碳原子。