发明名称 |
TRIFLURALIN: NITROSAMINE MINIMISED |
摘要 |
N-di-n.propyl-2,6-dinitro-4-trifluoromethylaniline (Trifluralin) with a low content in nitrosamines (less than 1 ppm) is prepared by reacting 4-trifluoro-2,6-dinitro-chlorobenzene with di-n.propylamine under the following critical conditions:… - feeding to the chlorobenzoderivative the di-n.propylamine containing a hydrate or an alkaline carbonate so that the pH value be comprised between 7 and 7.5;… - by regulating the temperature in such a way that it will not exceed 70 DEG C;… - by operating in the presence of at least 50% by weight of water in the reaction mass. |
申请公布号 |
AU7041681(A) |
申请公布日期 |
1981.11.26 |
申请号 |
AU19810070416 |
申请日期 |
1981.05.11 |
申请人 |
MONTEDISON S.P.A. |
发明人 |
M. BARNENGO;S. BACCIARELLI |
分类号 |
C07C211/52;A01N;A01N33/06;A01N33/18;C07C;C07C67/00;C07C209/00;C07C209/10;C07C209/18 |
主分类号 |
C07C211/52 |
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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