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CN101417952B 一种3-氨甲基-3,5,5-三甲基环已胺的制备方法 有权

一种3-氨甲基-3,5,5-三甲基环已胺的制备方法
摘要：
本发明公开一种由3-氰基-3，5，5-三甲基环己酮(IPN，即异佛尔酮腈)制备3-氨甲基-3，5，5-三甲基环己胺(异佛尔酮二胺，IPDA)的方法，所述方法包括：a)3-氰基-3，5，5-三甲基环己酮和羟氨于40℃～80℃在有机溶剂中反应，生成3-氰基-3，5，5-三甲基环己酮肟；b)3-氰基-3，5，5-三甲基环己酮肟、氢气和液氨于50～120℃，5～15MPa总压力下、及加氢催化剂作用下在有机溶剂中反应，生成3-氨甲基-3，5，5-三甲基环己胺。本发明方法不产生与IPDA难以分离的副产物3-氨甲基-3，5，5-三甲基环己醇(IPAA)；而且大幅降低了液氨的使用量。
摘要（英）：

The invention discloses a method for preparing 3-aminomethyl-3, 5, 5-trimethyl cyclohexylamine (isophorone diamine, IPDA) by 3-cyano-3, 5, 5-trimethyl cyclohexanone (IPN, isophorone nitrile), which comprises the following steps: a) 3-cyano-3, 5, 5-trimethyl cyclohexanone and oxyammonia are arranged in an organic solvent for reaction under a temperature ranging from 40 DEG C to 80 DEG C, and 3-cyano-3, 5, 5-trimethyl cyclohexanone oxime is generated; b) 3-cyano-3, 5, 5-trimethyl cyclohexanone oxime, hydrogen and liquid ammonia are arranged in an organic solvent for reaction under a temperatureranging from 50 DEG C to 120 DEG C, a total pressure ranging from 5 MPa to 15 MPa and the effect of a hydrogenation catalyst, and 3-aminomethyl-3, 5, 5-trimethyl cyclohexylamine is obtained. The method has the advantages that, the production of a by-product 3-aminomethyl-3, 5, 5-trimethyl cyclohexanol (IPAA) which is hard to be separated from IPDA is avoided; simultaneously, the amount of liquid ammonia is largely decreased.

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