Title:
有機溶媒抽出を伴わない粗カプロラクタムの溶液からのカプロラクタムの精製方法
Document Type and Number:
Japanese Patent JP6852181
Kind Code:
B2
Abstract:
The present invention relates to a process for purifying caprolactam from solutions of crude caprolactam by a direct treatment with one or more alkaline compounds of polyvalent metals, preferably bivalent and trivalent, without resorting to organic solvent extraction as used in the usual purification process.A further subject of the present invention is a facility devoid of a unit for organic solvent extraction and designed to carry out the caprolactam purification process described herein.
Inventors:
Dal Moro, Anakrate
Checkers, Michele
Jahich, Dennis
Margon, Vid
Checkers, Michele
Jahich, Dennis
Margon, Vid
Application Number:
JP2019550146A
Publication Date:
March 31, 2021
Filing Date:
December 15, 2017
Export Citation:
Assignee:
AQUAFILSLO D.O.O.
International Classes:
C07D201/16; C07D201/04; C07D223/10
Domestic Patent References:
| JP51052187A | ||||
| JP2004521923A | ||||
| JP47041909B1 | ||||
| JP49116086A | ||||
| JP57165364A | ||||
| JP55118457A | ||||
| JP2014533705A | ||||
| JP7500007A | ||||
| JP2008056620A |
Foreign References:
| GB1258810A | ||||
| DE1926932A1 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Atsushi Honda
Miki Nakamura
Hironobu Onda
Atsushi Honda
Miki Nakamura