公开(公告)号：US07153998B2

公开(公告)日：2006-12-26

申请号：US10523265

申请日：2003-05-09

申请人： Jong-In Lee ,  Hyun-Sup Shim ,  Yong-Jun Shin ,  Hang-Duk Roh

发明人： Jong-In Lee ,  Hyun-Sup Shim ,  Yong-Jun Shin ,  Hang-Duk Roh

IPC分类号： C07C51/42

CPC分类号： C07C51/43 ,  C07C63/38

摘要： The present invention relates to a method for refining 2,6-naphthalene dicarboxylic acid, and particularly to a method for refining 2,6-naphthalene dicarboxylic acid comprising recrystallizing crude 2,6-naphthalene dicarboxylic acid in the form of an amine salt using a solvent comprising a protic polar solvent selected from the group consisting of an alcohol, water, and a mixture thereof, and an acetate. In accordance with the invention, 2,6-naphthalene dicarboxylic acid can be obtained with excellent purity and color, and at the same time, it can be obtained in an economical and environmentally friendly way because the acetate, which is a byproduct of the oxidation process, is used as a solvent.

摘要翻译： 本发明涉及一种精制2,6-萘二甲酸的方法，特别涉及一种精制2,6-萘二甲酸的方法，该方法包括用胺盐形式的粗2,6-二
甲酸二甲酸重结晶，使用 溶剂，其包含选自醇，水及其混合物的质子极性溶剂和乙酸酯。 根据本发明，可以获得具有优异纯度和颜色的2,6-萘二甲酸，同时可以以经济和环保的方式获得，因为作为氧化副产物的乙酸酯 工艺，用作溶剂。

公开(公告)号：US20050261518A1

公开(公告)日：2005-11-24

申请号：US10523265

申请日：2003-05-09

申请人： Jong-In Lee ,  Hyun-Sup Shim ,  Yong-Jun Shin ,  Hang-Duk Roh

发明人： Jong-In Lee ,  Hyun-Sup Shim ,  Yong-Jun Shin ,  Hang-Duk Roh

IPC分类号： C07C51/42 ,  C07C51/43 ,  C07C51/487 ,  C07C63/38 ,  C07C63/33

CPC分类号： C07C51/43 ,  C07C63/38

摘要： The present invention relates to a method for refining 2,6-naphthalene dicarboxylic acid, and particularly to a method for refining 2,6-naphthalene dicarboxylic acid comprising recrystallizing crude 2,6-naphthalene dicarboxylic acid in the form of an amine salt using a solvent comprising a protic polar solvent selected from the group consisting of an alcohol, water, and a mixture thereof, and an acetate. In accordance with the invention, 2,6-naphthalene dicarboxylic acid can be obtained with excellent purity and color, and at the same time, it can be obtained in an economical and environmentally friendly way because the acetate, which is a byproduct of the oxidation process, is used as a solvent.

摘要翻译： 本发明涉及一种精制2,6-萘二甲酸的方法，特别涉及一种精制2,6-萘二甲酸的方法，该方法包括用胺盐形式的粗2,6-二
甲酸二甲酸重结晶，使用 溶剂，其包含选自醇，水及其混合物的质子极性溶剂和乙酸酯。 根据本发明，可以获得具有优异纯度和颜色的2,6-萘二甲酸，同时可以以经济和环保的方式获得，因为作为氧化副产物的乙酸酯 工艺，用作溶剂。

公开(公告)号：US20050215815A1

公开(公告)日：2005-09-29

申请号：US10520540

申请日：2003-01-07

申请人： Hang-Duk Roh ,  Jong-In Lee ,  Hyun-Sup Shim ,  Byung-Hui Kim ,  Jun-Sang Cho ,  Yoon-Seo Lee

发明人： Hang-Duk Roh ,  Jong-In Lee ,  Hyun-Sup Shim ,  Byung-Hui Kim ,  Jun-Sang Cho ,  Yoon-Seo Lee

IPC分类号： C07C51/255 ,  C07B61/00 ,  C07C51/265 ,  C07C63/307

CPC分类号： C07C51/265 ,  C07C63/307

摘要： Disclosed is a method of producing trimellitic acid through the liquid-phase oxidation of pseudocumene in acetic acid. The oxidation comprises a) conducting a first oxidation using an initial oxidizing catalytic system at 120-200iÉ for 5-20 min in an oxidizing reactor, said initial oxidizing catalytic system comprising at least three compounds selected from the group consisting of cobalt compound, manganese compound, zirconium compound and bromine compound; b) conducting a second oxidation in situ at 160-220iÉ for 30-60 min under addition of an additional catalytic system, said additional catalytic system comprising at least two compounds selected from the group consisting of cobalt compound, manganese compound, zirconium compound, and bromine compound; and c) completing the oxidation of pseudocumene at a temperature from 180 to 230iÉ for a time from 5 to 20 min without the addition of catalysts into the reactor. The pressure is adjusted in the range from 100 to 450 psig over the steps a), b) and c).

摘要翻译： 公开了通过在乙酸中的假枯烯的液相氧化制备偏苯三酸的方法。 氧化反应包括a）在氧化反应器中，使用初始氧化催化体系在120-200℃下进行第一次氧化5-20分钟，所述初始氧化催化体系包含至少三种选自 由钴化合物，锰化合物，锆化合物和溴化合物组成的组; b）在160-220℃下原位进行第二氧化30-60分钟，加入另外的催化体系，所述另外的催化体系包含至少两种选自钴 化合物，锰化合物，锆化合物和溴化合物; 和c）在180-230℃的温度下完成假枯烯的氧化5至20分钟，而不向反应器中加入催化剂。 在步骤a），b）和c）之后，将压力调节在100-450psig范围内。