Process for continuously preparing N-ethyl-2-pyrrolidone (NEP)

Details Process for continuously preparing N-ethyl-2-pyrrolidone (NEP) Process for continuously preparing N-ethyl-2-pyrrolidone (NEP)

2011-08-09

2011-08-09

Nolan, Jason M (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07994350

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.

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