PROCESS FOR THE PREPARATION OF 'epsilon'-CAPROLACTAM

Title:

PROCESS FOR THE PREPARATION OF 'epsilon'-CAPROLACTAM

Document Type and Number:

WIPO Patent Application WO/1997/003956

Kind Code:

A1

Abstract:

A process for the preparation of 'epsilon'-caprolactam which comprises converting cyclohexanol prepared by the hydration of cyclohexene into cyclohexanone through dehydrogenation, converting the cyclohexanone into cyclohexanone oxime and converting the cyclohexanone oxime into 'epsilon'-caprolactam through the Beckmann rearrangement, characterized in that the content of methylcyclopentanones in the cyclohexanone to be converted into the oxime is reduced to 400 ppm or below. 'epsilon'-Caprolactam which is not inferior to that prepared by the prior art process in quality can be prepared from cyclohexene as the starting compound at a low cost.

Inventors:

TERAMOTO KOUJI (JP)
KANDA YU (JP)
TEZUKA MAKOTO (JP)
UCHIBORI TOSHIO (JP)
SANO HIDEFUMI (JP)

Application Number:

PCT/JP1996/002015

Publication Date:

February 06, 1997

Filing Date:

July 19, 1996

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP (JP)
TERAMOTO KOUJI (JP)
KANDA YU (JP)
TEZUKA MAKOTO (JP)
UCHIBORI TOSHIO (JP)
SANO HIDEFUMI (JP)

International Classes:

C07D201/04; (IPC1-7): C07D201/04

Foreign References:

JPH08176102A	1996-07-09
JPH08193061A	1996-07-30
JPH08193062A	1996-07-30
JPH08198845A	1996-08-06
JPH05301858A	1993-11-16

Other References: