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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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公开(公告)号:US06242657B1
公开(公告)日:2001-06-05
申请号:US09530204
申请日:2000-04-26
IPC分类号: C07C20500
CPC分类号: C07C201/08 , C07B43/02 , C07C205/06 , C07C205/12
摘要: In the reaction of aromatic compounds with nitrating acids comprising HNO3 and, if appropriate, H2SO4 and/or H2O and/or H3PO4 to form aromatic nitro compounds, according to the invention an amount of from 0.5 to 20,000 ppm of one or more surface-active substances from the group of the anionic, cationic, zwitterionic or nonionic surface-active substances is added to the reaction mixture.
摘要翻译: 在芳香族化合物与包含HNO 3的硝酸和(如果合适的话)H 2 SO 4和/或H 2 O和/或H 3 PO 4形成芳族硝基化合物的硝酸反应中,根据本发明,0.5-20,000ppm的一种或多种表面活性 将阴离子,阳离子,两性离子或非离子表面活性物质的物质加入到反应混合物中。
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