Preparation of 1,6-hexanediol
    1.
    发明授权
    Preparation of 1,6-hexanediol 失效
    1,6-己二醇的制备

    公开(公告)号:US07064239B2

    公开(公告)日:2006-06-20

    申请号:US10537829

    申请日:2003-12-03

    IPC分类号: C07C31/20 C07C31/18

    CPC分类号: C07C29/177 C07C31/20

    摘要: The present invention provides a process for preparing 1,6-hexanediol having a purity of ≧99.5% by weight by catalytically dimerizing acrylic esters and catalytically hydrogenating the hexenedioic diesters obtained in this way to 1,6-hexanediol by a) dimerizing C1- to C8-acrylic esters in the presence of at least one rhodium compound to give mixtures of predominantly 2- and 3-hexenedioic diesters, b) hydrogenating the resulting dimerizing effluent in the presence of chromium-free catalysts comprising predominantly copper as the hydrogenation component and c) purifying the crude 1,6-hexanediol obtained in this way by fractional distillation.

    摘要翻译: 本发明提供了一种通过催化二聚丙烯酸酯制备纯度> 99.5%(重量)的1,6-己二醇的方法,并将以这种方式获得的己二酸二酯催化氢化, 在至少一种铑化合物的存在下加入到C 8 - 丙烯酸酯中,得到主要为2-和3-己烯二酸二酯的混合物,b)将得到的二聚流出物 在主要含有铜作为氢化组分的无铬催化剂的存在下,和c)通过分馏纯化以这种方式得到的粗制1,6-己二醇。