Invention Grant
- Patent Title: Process for preparing aniline
- Patent Title (中): 制备苯胺的方法
-
Application No.: US11706444Application Date: 2007-02-15
-
Publication No.: US07692042B2Publication Date: 2010-04-06
- Inventor: Markus Dugal , Franz-Ulrich Von Gehlen , Stefan Wershofen , Andre Lago , Peter Lehner , Benie Marotz
- Applicant: Markus Dugal , Franz-Ulrich Von Gehlen , Stefan Wershofen , Andre Lago , Peter Lehner , Benie Marotz
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agent Lyndanne M. Whalen; Noland J. Cheung
- Priority: DE102006007620 20060218
- Main IPC: C07C29/86
- IPC: C07C29/86
Abstract:
Crude aniline is produced by hydrogenating nitrobenzene in the presence of a catalyst. This crude aniline is then purified by means of a single-step or multi-step distillation process in which aqueous alkali metal hydroxide solution is added to the crude aniline prior to distillation and/or during distillation of the crude aniline.
Public/Granted literature
- US20070203364A1 Process for preparing aniline Public/Granted day:2007-08-30
Information query
