发明名称 |
PRODUCTION OF AMMONIUM SALTS OF AROMATIC CARBOXYLIC ACIDS |
摘要 |
A process is described for preparing ammonium salts of aromatic carboxylic acids by reacting an aromatic carboxylic acid with ammonia in an aprotic solvent, which comprises carrying out the reaction in a closed vessel by continuously introducing a solution of the aromatic carboxylic acid in the aprotic solvent and passing in gaseous ammonia so that an ammonia partial pressure in the range from 0.1 to 3 bar is maintained in the gas space of the vessel, and discharging a suspension of the ammonium salt in the aprotic solvent. The process allows the preparation of ammonium salts of defined crystal size having a narrow size distribution. |
申请公布号 |
PL369757(A1) |
申请公布日期 |
2005.05.02 |
申请号 |
PL20020369757 |
申请日期 |
2002.12.03 |
申请人 |
BASF AG |
发明人 |
KLOPP INGO;BOGENSTAETTER THOMAS;FRANKE DIRK |
分类号 |
C07C51/41;C07C;C07C63/00;C07C63/04;C07C63/08 |
主分类号 |
C07C51/41 |
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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