Wanhua Chemical Group Co., Ltd.

Wanhua Chemical Co., Ltd.

Jinke Jiang

Weiqi Hua

Yuan Li

Changsheng Chen

Fuguo Li

Jiaoying Cui

Nan Zhao

Zhongying Chen

Wenjuan Zhao

Jing Wang

Chengge Lv

Haibing Jia

Tianyong Yu

Changhao Ke

Jianmao Guo

Jingkui Wang

Mingyan Song

Changbao Xu

Junxian Liu

Yan Song

Yifeng Chen

The present invention provides a method for preparing 3-aminomethyl-3,5,5-trimethyl cyclohexylamine. The method comprises: a) reacting 3-cyano-3,5,5-trimethyl cyclohexanone with excess primary amine as well as removing the water generated from the reaction, so that IPN is substantially converted into imine compounds; b) in the presence of an ammonolysis catalyst, mixing the product of step a) with liquid ammonia, making the imine compound perform ammonolysis reaction to generate 3-cyano-3,5,5-trimethyl cyclohexylimine and the primary amine; and c) in the presence of hydrogen and a hydrogenation catalyst, hydrogenating 3-cyano-3,5,5-trimethyl cyclohexylimine obtained in step b) to obtain 3-aminomethyl-3,5,5-trimethyl cyclohexylamine. The method of the present invention avoids the generation of 3,5,5-trimethyl cyclohexanol and 3-aminomethyl-3,5,5-trimethyl cyclohexanol as the major by-products in the prior art, thereby improving the yield of 3-aminomethyl-3,5,5-trimethyl cyclohexylamine.

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

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Yantai, China

Jinke Jiang