Title:
METHOD FOR MANUFACTURING BIS(AMINOMETHYL)CYCLOHEXANE
Document Type and Number:
WIPO Patent Application WO/2021/131912
Kind Code:
A1
Abstract:
A method for manufacturing bis(aminomethyl)cyclohexane by hydrogenating xylylenediamine in the presence of a solvent and a catalyst wherein a catalyst, the activity of which has decreased with use, is processed in a catalyst regeneration processing step that includes the following step (1) and step (2) and re-used in a reaction system. Step (1): The quantity of bis(aminomethyl)cyclohexane in a solution prior to step (2) is maintained at no more than 20% by mass. Step (2): The catalyst is heated to 100–500°C and brought into contact with a hydrogen-containing gas.
Inventors:
NOGUCHI EMI (JP)
IBI YUKIYA (JP)
KUMANO TATSUYUKI (JP)
IBI YUKIYA (JP)
KUMANO TATSUYUKI (JP)
Application Number:
PCT/JP2020/046785
Publication Date:
July 01, 2021
Filing Date:
December 15, 2020
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
C07B61/00; C07C209/72; C07C211/18
Foreign References:
| JPH08143514A | 1996-06-04 | |||
| JPS5174997A | 1976-06-29 | |||
| JP2004107327A | 2004-04-08 | |||
| JPS55104236A | 1980-08-09 | |||
| JPS50126638A | 1975-10-04 |
Other References:
See also references of EP 4083012A4
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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