发明名称 |
Preparation of 4,4'-dinitrodiphenylamine from urea and nitrobenzene |
摘要 |
A method for preparing 4,4'-dinitrodiphenylamine, including reacting urea and nitrobenzene in a polar organic solvent in the presence of a base at a temperature of room temperature to 100 DEG C. The method employs a relatively cheap urea and nitrobenzene as the raw materials, and also employs a relatively cheap base, thereby decreasing the manufacturing costs. Moreover, the method does not produce by-products, thus eliminating a need for a post-treating process. Additionally, the method is advantageous in that the production of 4,4'-dinitrodiphenylamine can be achieved in high yield and selectivity even under non-intensive reaction conditions by appropriately controlling the amounts of urea and nitrobenzene.
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申请公布号 |
US6156932(A) |
申请公布日期 |
2000.12.05 |
申请号 |
US20000511281 |
申请日期 |
2000.02.23 |
申请人 |
KOREA KUMHO PETROCHEMICAL CO., LTD. |
发明人 |
JOO, YOUNG J.;KIM, JIN-EOK;WON, JEONG-IM;HWANG, KUM-UI |
分类号 |
C07C209/02;C07C211/56;(IPC1-7):C07C209/00 |
主分类号 |
C07C209/02 |
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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