Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine
    1.
    发明授权
    Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine 失效
    从含有6-氨基己腈,己二胺和六亚甲基二胺的混合物中除去6-氨基己腈的方法

    公开(公告)号:US06972075B2

    公开(公告)日:2005-12-06

    申请号:US10311376

    申请日:2001-06-13

    摘要: The invention relates to a method for removing, by distillation, 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine, by a) removing the hexamethylenediamine from the mixture while obtaining a mixture (I) that has a hexamethylenediamine content of less than 1 wt. -%, b) removing completely or partially the 6-aminocapronitrile from mixture (I) while obtaining a mixture (II) whose content in substances that have a higher boiling point as 6-aminocapronitrile under distillation conditions and that cannot be formed by dimerization reactions when 6-aminocapronitrile is thermally treated is less than 1 wt. -%, and c) completely or partially removing from mixture (II) the hexamethylenediamine that might be present while obtaining a mixture (IV) whose hexamethylenediamine content is higher than that of mixture (II), and a mixture (V) whose hexamethylenediamine content is lower than that of mixture (II).

    摘要翻译: 本发明涉及一种通过以下方法:从含有6-氨基己腈,己二腈和六亚甲基二胺的混合物中蒸馏除去6-氨基己腈,方法是a)从混合物中除去六亚甲基二胺,同时得到六亚甲基二胺含量少的混合物(I) 超过1wt。 - %,b)从混合物(I)中完全或部分地除去6-氨基己腈,同时得到其在蒸馏条件下具有较高沸点的物质中的含量为6-氨基己腈的混合物(II),并且不能通过二聚反应形成 当6-氨基己腈被热处理时小于1wt。 - %,和c)在获得六亚甲基二胺含量高于混合物(II)的混合物(Ⅳ)的同时,可能存在的六亚甲基二胺的混合物(II)完全或部分地除去,和(VI)的六亚甲基二胺含量 低于混合物(II)。