Title:
METHOD FOR PURIFYING CAPROLACTAM
Document Type and Number:
Japanese Patent JP3221063
Kind Code:
B2
Abstract:
PURPOSE: To readily and efficiently produce high-grade caprolactam by distilling crude caprolactam in the coexistence of aliphatic saturated hydrocarbons.
CONSTITUTION: The method for purifying caprolactam is characterized by distilling crude caprolactam produced by the catalytic rearrangement of cyclohexanone oxime in the coexistence of 10-18C aliphatic saturated hydrocarbons in purifying the crude caprolactam.
Inventors:
Yasuhiko Higashio
Koji Kajiguri
Keisuke Sugita
Hideki Doi
Masanobu Matsubara
Koji Kajiguri
Keisuke Sugita
Hideki Doi
Masanobu Matsubara
Application Number:
JP15927792A
Publication Date:
October 22, 2001
Filing Date:
June 18, 1992
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
C07D201/16; C07D223/10; (IPC1-7): C07D201/16; C07D223/10
Domestic Patent References:
| JP465231A | ||||
| JP4714188A | ||||
| JP4713322A | ||||
| JP477378A | ||||
| JP479116A | ||||
| JP6471854A | ||||
| JP5233118B1 |
Attorney, Agent or Firm:
Mitsuhiro Moroishi (1 person outside)