| 摘要 |
PURPOSE: It is an object of the present invention to make available a process for preparing either 6-aminocapronitrile or a mixture of 6-aminocapronitrile and hexamethylenediamine with a very high conversion starting from 2- and/or 3- and/or 4-pentenenitrile. More particularly, the process shall ensure long catalyst on-stream times. CONSTITUTION: Manufacture of 6-aminocapronitrile or 6-aminocapronitrile/hexamethylene diamine mixtures, involving a) the reaction of at least one pentenenitrile, selected from the group consisting of 2,3 and 4-pentenenitrile with carbon monoxide and hydrogen in the presence of catalysts, which contain at least one element of the eighth subgroup as active components, obtaining a hydrogenation formylating discharge (I), b) the optional separation of carbon monoxide, hydrogen and the catalyst from the hydrogenation formylating discharge (I), obtaining a hydrogenation formylating discharge (II), c) the separation of 5-formyl valeronitrile from the hydrogenation formylating discharge (I) or (II), d) the reaction of separated 5-formyl valeronitrile with ammonia and hydrogen in the presence of hydrogenating catalysts, selected from the group consisting of rhenium, copper and its compounds as well as metals and metallic compounds of the eighth group, obtaining a hydrogenation discharge, and e) obtaining 6-aminocapronitrile and if necessary hexamethylene diamine.
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