公开(公告)号：AT518832T

公开(公告)日：2011-08-15

申请号：AT02787689

申请日：2002-11-15

Applicant: BASF SE

Inventor： RUDLOFF MARTIN ,  STOPS PETER ,  HENKES ERHARD ,  SCHMIDTKE HELMUT ,  FISCHER ROLF-HARTMUTH ,  JULIUS MANFRED ,  LEBKUECHER ROLF ,  ROSS KARL-HEINZ

IPC: C07D207/26 ,  C07D207/267

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.