Preparation method of naphthalene dicarboxylic acid
    1.
    发明申请
    Preparation method of naphthalene dicarboxylic acid 审中-公开
    萘二羧酸的制备方法

    公开(公告)号:US20060167310A1

    公开(公告)日:2006-07-27

    申请号:US10523874

    申请日:2003-05-02

    IPC分类号: C07C51/255

    CPC分类号: C07C51/265 C07C63/38

    摘要: The present invention relates to a method for the preparation of naphthalene dicarboxylic acid, and more particularly, to a method for the preparation of naphthalene dicarboxylic acid by oxidizing dimethylnaphthalene with oxygen in air in the presence of acetic acid solvent using the metal catalysts of cobalt and manganese, and using bromine as a reaction initiator, wherein the temperature of said oxidation reaction is 155 to 180° C. The method for the preparation of naphthalene dicarboxylic acid of the invention enables the preparation of naphthalene dicarboxylic acid having high purity with a high yield in an economical way at a low temperature.

    摘要翻译: 本发明涉及一种萘二羧酸的制备方法,更具体地说,涉及一种在乙酸溶剂存在下,用氧在空气中氧化二甲基萘的萘二甲酸的制备方法,该方法使用钴的金属催化剂和 锰,并使用溴作为反应引发剂,其中所述氧化反应的温度为155〜180℃。本发明的萘二甲酸的制备方法能够以高产率制备高纯度的萘二甲酸 在低温下以经济的方式。