Title: Method for hydrogenating dinitriles
Application Number: 98812742 Application Date: 1998.11.19
Publication Number: 1283179 Publication Date: 2001.02.07
Approval Pub. Date: 2003.08.06 Granted Pub. Date: 2003.08.06
International Classifi-cation: B01J10/00;B01J19/24;C07C209/48;C07C253/30
Applicant(s) Name: Rhodia Fiber and Resin Intermediates Address:
Inventor(s) Name: V. Boschat;P. Leconte;D. Rochette
Attorney & Agent: wang jie
Abstract:
    The invention concerns a method for hydrogenating aliphatic dinitriles at least partly into corresponding aminonitriles. More particularly, it concerns a method for continuous hydrogenation of dinitrile, at least partly into corresponding aminonitrile, in the presence of a hydrogenation catalyst non-dissolved in the reaction medium. The invention is characterised in that it is carried out in an equipment comprising continuous means separating the hydrogenate and the catalyst in a zone wherein the gas-liquid transfer is limited or nil, said separation and recycling of the catalyst being carried out in a time interval of not more than 30 minutes.
Time: 14