Title:
【発明の名称】ピロリドンおよびN-ビニルピロリドン残留物を処理するための方法
Document Type and Number:
Japanese Patent JP2003532706
Kind Code:
A
Abstract:
A process for working up residues from the preparation of pyrrolidone and/or N-vinylpyrrolidone comprises subjecting the residues to a thermolysis.
Inventors:
Herbert Helfeld
Martin Schmid-Radde
Gerhard Laqua
Ulrich Aiden
Stephan Scholl
Christoph Ubler
Martin Schmid-Radde
Gerhard Laqua
Ulrich Aiden
Stephan Scholl
Christoph Ubler
Application Number:
JP2001582283A
Publication Date:
November 05, 2003
Filing Date:
May 10, 2001
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
B01D3/14; B01J3/00; C07D201/16; C07D207/267; C07D207/26; (IPC1-7): C07D207/267; B01D3/14; B01J3/00
Domestic Patent References:
| JPH06228088A | 1994-08-16 | |||
| JPH06228089A | 1994-08-16 | |||
| JPS53137957A | 1978-12-01 | |||
| JP2001122854A | 2001-05-08 |
Attorney, Agent or Firm:
Toshio Yano (4 outside)