Invention Grant
US07994350B2 Process for continuously preparing N-ethyl-2-pyrrolidone (NEP)
有权
连续制备N-乙基-2-吡咯烷酮（NEP）的方法
- Patent Title: Process for continuously preparing N-ethyl-2-pyrrolidone (NEP)
- Patent Title (中): 连续制备N-乙基-2-吡咯烷酮（NEP）的方法
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Application No.: US12299544Application Date: 2007-05-10
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Publication No.: US07994350B2Publication Date: 2011-08-09
- Inventor: Helmut Schmidtke , Ralph Versch , Silke Simon , Karl Ott , Ronald Drews , Stephanie Mollner
- Applicant: Helmut Schmidtke , Ralph Versch , Silke Simon , Karl Ott , Ronald Drews , Stephanie Mollner
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP06114031 20060516
- International Application: PCT/EP2007/054508 WO 20070510
- International Announcement: WO2007/131929 WO 20071122
- Main IPC: C07D207/267
- IPC: C07D207/267
Abstract:
Process for the continuous preparation of N-ethyl-2-pyrrolidone (NEP) by reacting gamma-butyrolactone (GBL) with monoethylamine (MEA) in the liquid phase, wherein GBL and MEA are used in a molar ratio in the range from 1:1.08 to 1:2 an the reaction is carried out at a temperature in the range from 320 to 420° C. and an absolute pressure in the range from 70 to 120 bar.
Public/Granted literature
- US20090187030A1 PROCESS FOR CONTINUOUSLY PREPARING N-ETHYL-2-PYRROLIDONE (NEP) Public/Granted day:2009-07-23
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