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1.发明授权Continuous isothermal process for preparing mononitrotoluenes in the presence of phosphoric acid 失效在磷酸存在下制备单硝基甲苯的连续等温方法公开(公告)号：US06768032B2
公开(公告)日：2004-07-27
申请号：US10114288
申请日：2002-04-02
IPC分类号： C07C20500
CPC分类号： C07C201/08 , C07C205/06
摘要： 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.
摘要翻译： 本发明涉及在包含硫酸和磷酸的混合物的混合酸组分存在下制备单硝基甲苯的连续等温方法，浓缩所得废酸并将浓缩的废酸再循环到该方法中。
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公开(公告)号：US06794549B2
公开(公告)日：2004-09-21
申请号：US10360192
申请日：2003-02-06
IPC分类号： C07C20500
CPC分类号： C07C201/08 , C07C205/12
摘要： The present invention relates to a continuous adiabatic process for preparing nitrochlorobenzene in the presence of phosphoric acid. The waste acid produced during the practice of the process is reconcentrated and recycled into the nitration reaction.
摘要翻译： 本发明涉及在磷酸存在下制备硝基氯苯的连续绝热方法。 在该过程的实践过程中产生的废酸被再浓缩并再循环到硝化反应中。
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公开(公告)号：US06583327B2
公开(公告)日：2003-06-24
申请号：US10032760
申请日：2001-10-26
申请人： Ralf Demuth , Frank Döbert , Harald Petersen , Georg Ronge , Hans-Martin Weber , Thomas Würminghausen , Eberhard Zirngiebl
发明人： Ralf Demuth , Frank Döbert , Harald Petersen , Georg Ronge , Hans-Martin Weber , Thomas Würminghausen , Eberhard Zirngiebl
IPC分类号： C07C20500
CPC分类号： C07C201/08 , C07C205/06
摘要： The present invention relates to a process for the continuous isothermal preparation of mononitrotoluenes with concentration of the resultant waste sulfuric acid and recycling of the concentrated waste sulfuric acid to the process.
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公开(公告)号：US06586645B2
公开(公告)日：2003-07-01
申请号：US10078655
申请日：2002-02-19
申请人： Ralf Demuth , Bernd-Michael König , Thomas Linn , Hans-Joachim Raatz , Hans-Martin Weber , Eberhard Zirngiebl , Ricarda Leiberich
发明人： Ralf Demuth , Bernd-Michael König , Thomas Linn , Hans-Joachim Raatz , Hans-Martin Weber , Eberhard Zirngiebl , Ricarda Leiberich
IPC分类号： C07C20500
CPC分类号： C07C201/08 , C07C205/12
摘要： The present invention relates to a continuous adiabatic process for preparing nitrochlorobenzene, in which the waste sulfuric acid produced during the practice of the process is reconcentrated and recycled into the nitration reaction.
摘要翻译： 本发明涉及一种用于制备硝基氯苯的连续绝热方法，其中在该方法的实施过程中产生的废硫酸被再浓缩并再循环到硝化反应中。
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公开(公告)号：US06353142B1
公开(公告)日：2002-03-05
申请号：US09704876
申请日：2000-11-02
申请人： Eberhard Zirngiebl , Bernd-Michael König , Hans-Martin Weber , Thomas Linn , Hans-Joachim Raatz
发明人： Eberhard Zirngiebl , Bernd-Michael König , Hans-Martin Weber , Thomas Linn , Hans-Joachim Raatz
IPC分类号： C07C20506
CPC分类号： C07C201/12 , C07C201/16 , C07C205/12
摘要： 1,2-Dichlorobenzene can be reacted very selectively under adiabatic reaction conditions to give 3,4-dichloronitrobenzene by intensively mixing 1,2-dichlorobenzene with nitric acid, sulphuric acid and water, simultaneously or successively, in their total amount, using a mixing energy of 1-50 watts per litre of the total reaction mixture, preferably 3-30 W/l, and maintaining a temperature of from 0 to 60° C. during mixing.
摘要翻译： 1,2-二氯苯可以在绝热反应条件下非常有选择性地反应，通过使用混合物，将1,2-二氯苯与硝酸，硫酸和水强烈混合，同时或相继地以其总量而混合，得到3,4-二氯硝基苯 能量为1-50瓦/升总反应混合物，优选3-30W / l，并在混合期间保持0至60℃的温度。
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