Invention Grant
US07227029B2 Method for the continuous production of N-methyl-2-pyrrolidone (NMP)
有权
连续生产N-甲基-2-吡咯烷酮（NMP）的方法
- Patent Title: Method for the continuous production of N-methyl-2-pyrrolidone (NMP)
- Patent Title (中): 连续生产N-甲基-2-吡咯烷酮（NMP）的方法
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Application No.: US10495358Application Date: 2002-11-15
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Publication No.: US07227029B2Publication Date: 2007-06-05
- Inventor: Martin Rudloff , Peter Stops , Erhard Henkes , Helmut Schmidtke , Rolf-Hartmuth Fischer , Manfred Julius , Rolf Lebkücher , Karl-Heinz Ross
- Applicant: Martin Rudloff , Peter Stops , Erhard Henkes , Helmut Schmidtke , Rolf-Hartmuth Fischer , Manfred Julius , Rolf Lebkücher , Karl-Heinz Ross
- Applicant Address: DE Ludwigshafen
- Assignee: BASF Aktiengesellschaft
- Current Assignee: BASF Aktiengesellschaft
- Current Assignee Address: DE Ludwigshafen
- Agency: Novak Druce & Quigg, LLP
- Priority: DE10156885 20011120
- International Application: PCT/EP02/12804 WO 20021115
- International Announcement: WO03/053924 WO 20030703
- Main IPC: C07D207/12
- IPC: C07D207/12 ; C07D307/20
Abstract:
Process for the continuous preparation of N-methyl-2-pyrrolidone (NMP) by reacting gamma-butyrolactone (GBL) with monomethylamine (MMA) in the liquid phase, wherein GBL and MMA are used in a molar ratio of from 1:1.08 to 1:2 and the reaction is carried out at from 320 to 380° C. and an absolute pressure of from 70 to 120 bar.
Public/Granted literature
- US20050010057A1 Method for the continuous production of n-methyl-2-pyrrolidone (nmp) Public/Granted day:2005-01-13
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