Method for preparing a 3- aminomethyl-3,5,5-trimethyl cyclohexylamine

The present invention discloses a method for preparing 3-aminomethyl-3,5,5-trimethyl cyclohexylamine. The method comprises a) mixing an acid value of starting material 3-cyano-3,5,5-trimethyl cyclohexanone is controlled to 0.02 ~ 0.50mgKOH / g, the reaction with ammonia, to give a reaction solution imidization portion ; acid value regulating addition of an alkaline moiety imidization reaction liquid obtained in b) the steps a), the raw material added in an amount of 3-cyano-3,5,5-trimethyl cyclohexanone molar amount 0.2 ~ 5 ‰ imidization to proceed; c) step b) the resulting product is hydrogenated to 3-aminomethyl-3,5,5-trimethyl cyclohexylamine in the presence of hydrogen, ammonia and catalyst. The yield in production process 3- aminomethyl-3,5,5-trimethyl cyclohexylamine close to 99%, and space velocity increase, the reaction efficiency, equipment cost and saving the catalyst.