Title:
【発明の名称】ε-カプロラクタムとε-カプロラクタム前駆体の水性混合物を連続的に調製する方法
Document Type and Number:
Japanese Patent JP2002524441
Kind Code:
A
Abstract:
Process for preparing an aqueous mixture of epsilon -caprolactam and 6-aminocaproic acid and/or 6-aminocaproamide which involves, as the reductive amination step, contacting 5-formylvaleric acid and/or an alkyl 5-formylvalerate in water as solvent with hydrogen and an excess of ammonia in the presence of a ruthenium on carrier, as a catalyst, wherein the carrier is titanium oxide, zirconium oxide, graphite or carbon and the catalyst also contains at least one of the metals of group 8-11, or a compound of these metals. The aqueous mixture can be used to prepare epsilon -caprolactam.
Inventors:
Plagueman, Robert
Van Reithhout, Lambertus, Hubertus, Wilhelms, Maria
Van Reithhout, Lambertus, Hubertus, Wilhelms, Maria
Application Number:
JP2000568821A
Publication Date:
August 06, 2002
Filing Date:
September 01, 1999
Export Citation:
Assignee:
DSM N.V.
E.I.DU PONT DE NEMOURS AND COMPANY
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
B01J23/46; C07B61/00; C07C227/08; C07C229/08; C07C231/14; C07C237/06; C07D201/08; C07D223/10; (IPC1-7): C07D201/08; B01J23/46; C07C227/08; C07C229/08; C07C231/14; C07C237/06; C07D223/10
Attorney, Agent or Firm:
Mitsuo Matsui