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    • 8. 发明申请
    • Method for producing xylylenediamine (xda)
    • 苯二甲胺生产方法(xda)
    • US20070088178A1
    • 2007-04-19
    • US10571615
    • 2004-09-04
    • Randolf HugoSabine JourdanKirsten WenzThomas PreissAlexander Weck
    • Randolf HugoSabine JourdanKirsten WenzThomas PreissAlexander Weck
    • C07C209/48
    • C07C209/48C07C211/27
    • A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile by contacting the vaporous product of this ammoxidation stage directly with a liquid organic solvent (quench), removing products having a boiling point higher than phthalonitrile (high boilers) from the resulting quench solution or suspension and hydrogenating the phthalonitrile, wherein the organic solvent used for the quench is N-methyl-2-pyrrolidone (NMP), after the removal of the high boilers and before the hydrogenation, there is a partial or complete removal of the NMP and/or of products having a boiling point lower than phthalonitrile (low boilers) and the phthalonitrile for the hydrogenation step is dissolved or suspended in an organic solvent or in liquid ammon
    • 一种制备苯二甲胺的方法,包括以下步骤:通过使该氨氧化段的蒸气产物与液体有机溶剂(骤冷)接触,将二甲苯与邻苯二甲腈进行氨氧化,从所得的淬火中除去沸点高于邻苯二甲腈(高锅炉)的产物 溶液或悬浮液并氢化邻苯二甲腈,其中用于骤冷的有机溶剂是N-甲基-2-吡咯烷酮(NMP),在除去高锅炉之后,在氢化之前,部分或完全除去NMP 和/或沸点低于邻苯二甲腈(低锅炉)的产物和用于氢化步骤的邻苯二甲腈溶解或悬浮在有机溶剂或液氨中