Title:
【発明の名称】変性ラニ-触媒を使用する芳香族ジアミノ化合物の製造
Document Type and Number:
Japanese Patent JPH07121894
Kind Code:
B2
Abstract:
Aromatic diamino compounds are produced by hydrogenating the corresponding dinitro compounds in the presence of a modified Raney catalyst. The modified Raney catalyst is obtained by treating an alloy made up of 50-95 wt % of aluminum, 4-45 wt % nickel and/or cobalt and 1-46 wt % of at least one modifying metal with an alkali material. The modifying metal is selected from the metals of the first, fourth, fifth, sixth, seventh and eighth subgroups of the Periodic Table of Elements. The hydrogenation is preferably carried out at from 170 DEG to 250 DEG C. and a pressure of 15-50 bar. The heat generated during hydrogenation is preferably used to produce steam.
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Inventors:
Day baker
Udo Birken Shuttuk
Etzkart Valdau
Hello Vuitto
Udo Birken Shuttuk
Etzkart Valdau
Hello Vuitto
Application Number:
JP24567386A
Publication Date:
December 25, 1995
Filing Date:
October 17, 1986
Export Citation:
Assignee:
Bayer Actien Gezershyaft
International Classes:
C07B61/00; B01J25/00; B01J25/02; C07C67/00; C07C209/00; C07C209/36; C07C211/50; C07C211/55; (IPC1-7): C07C211/50; C07C209/36
Domestic Patent References:
| JP53119291A | ||||
| JP58185527A | ||||
| JP59205346A |
Attorney, Agent or Firm:
Kawahara Kazuho
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