Title:
PRODUCTION METHOD OF ε-CAPROLACTAM
Document Type and Number:
Japanese Patent JP2018076235
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing ε-caprolactam at a high reactivity and a high selectivity by a rearrangement reaction of cyclohexanone oxime produced by even using cyclohexylamine as the raw material.SOLUTION: A production method of ε-caprolactam includes a step (A) for producing cyclohexanone oxime by oxidizing cyclohexylamine and a step (B) for producing ε-caprolactam from the cyclohexanone oxime by a gas-phase Beckmann rearrangement reaction using a solid catalyst in the presence of a lower alcohol. The amount of the cyclohexylamine contained in the cyclohexanone oxime in the step (B) satisfies the following expression (1): (1) 0≤{[cyclohexylamine (mass)/cyclohexanone oxime (mass)]×100}≤5.0.SELECTED DRAWING: None
Inventors:
SUGITA KEISUKE
MAKI TAKASHI
MAKI TAKASHI
Application Number:
JP2015053398A
Publication Date:
May 17, 2018
Filing Date:
March 17, 2015
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C07D201/04; C07D201/16; C07D223/10
Attorney, Agent or Firm:
Mitsuo Tanaka
Takuji Yamada
Kenichi Morizumi
Kawazoe Masashi
Takuji Yamada
Kenichi Morizumi
Kawazoe Masashi
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