Invention Grant
- Patent Title: Continuous isothermal process for preparing mononitrotoluenes in the presence of phosphoric acid
- Patent Title (中): 在磷酸存在下制备单硝基甲苯的连续等温方法
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Application No.: US10114288Application Date: 2002-04-02
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Publication No.: US06768032B2Publication Date: 2004-07-27
- Inventor: Matthias Gotta , Ralf Demuth , Eberhard Zirngiebl , Hans-Martin Weber , Georg Ronge
- Applicant: Matthias Gotta , Ralf Demuth , Eberhard Zirngiebl , Hans-Martin Weber , Georg Ronge
- Priority: DE10117207 20010406
- Main IPC: C07C20500
- IPC: C07C20500
Abstract:
The present invention relates to a continuous isothermal process for preparing mononitrotoluenes in the presence of a mixed acid component comprising mixtures of sulfuric acid and phosphoric acid with concentration of the resultant waste acid and recycling of the concentrated waste acid to the process.
Public/Granted literature
- US20020147372A1 Continuous isothermal process for preparing mononitrotoluenes in the presence of phosphoric acid Public/Granted day:2002-10-10
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