发明名称 |
METHOD FOR REFINING 2,6-NAPHTHALENE DICARBOXYLIC ACID |
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. |
申请公布号 |
WO2004013071(A2) |
申请公布日期 |
2004.02.12 |
申请号 |
WO2003KR00917 |
申请日期 |
2003.05.09 |
申请人 |
SK CHEMICALS CO., LTD.;LEE, JONG-IN;SHIM, HYUN-SUP;SHIN, YONG-JUN;ROH, HANG-DUK |
发明人 |
LEE, JONG-IN;SHIM, HYUN-SUP;SHIN, YONG-JUN;ROH, HANG-DUK |
分类号 |
C07C51/42;C07C51/43;C07C51/487;C07C63/38 |
主分类号 |
C07C51/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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