Title:
CONTINUOUS METHOD FOR HYDROGENATION OF NITRILES OR NITRATED COMPOUNDS TO GIVE AMINES
Document Type and Number:
WIPO Patent Application WO2003062188
Kind Code:
A3
Abstract:
The invention relates to a method for the hydrogenation of compounds comprising cyano or nitro functions to give amino compounds aminonitriles or nitroamines. According to the invention, a method for continuous hydrogenation of compounds comprising cyano or nitro functions is carried out in the presence of a heterogeneous hydrogenation catalyst in a dispersed form and in the form of a basic compound. The reaction is carried out in a stirred reactor comprising an external circulation loop for the reaction medium which allows the separation of a proportion of the product without withdrawing catalyst by means of a tangential filtration. Said method is particularly applicable to the hydrogenation of adiponitrile to give a mixture of aminocapronitrile and hexamethylene diamine.
Inventors:
BOCQUENET GERALD (FR)
CHESNAIS ANDRE (FR)
DESIRE JEAN-MICHEL (FR)
LECONTE PHILIPPE (FR)
SEVER LIONEL (FR)
CHESNAIS ANDRE (FR)
DESIRE JEAN-MICHEL (FR)
LECONTE PHILIPPE (FR)
SEVER LIONEL (FR)
Application Number:
PCT/FR2003/000161
Publication Date:
April 15, 2004
Filing Date:
January 20, 2003
Export Citation:
Assignee:
RHODIA POLYAMIDE INTERMEDIATES (FR)
BOCQUENET GERALD (FR)
CHESNAIS ANDRE (FR)
DESIRE JEAN-MICHEL (FR)
LECONTE PHILIPPE (FR)
SEVER LIONEL (FR)
BOCQUENET GERALD (FR)
CHESNAIS ANDRE (FR)
DESIRE JEAN-MICHEL (FR)
LECONTE PHILIPPE (FR)
SEVER LIONEL (FR)
International Classes:
B01J25/00; B01J25/04; B01J38/00; C07B61/00; C07C209/48; C07C211/12; C07C253/30; C07C211/09; C07C255/24; (IPC1-7): C07C209/48; C07C253/30
Foreign References:
| FR2749191A1 | 1997-12-05 | |||
| US6232488B1 | 2001-05-15 | |||
| FR2773086A1 | 1999-07-02 |
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