公开(公告)号：US20230040356A1

公开(公告)日：2023-02-09

申请号：US17784314

申请日：2020-12-15

申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.

发明人： Emi NOGUCHI ,  Yukiya IBI ,  Tatsuyuki KUMANO

IPC分类号： C07C211/18 ,  C07C209/72 ,  B01J23/46

摘要： A method for producing bis(aminomethyl)cyclohexane, including hydrogenating xylylenediamine in the presence of a solvent and a catalyst, wherein the catalyst with decreased activity due to use is treated in a catalyst regeneration treatment step including the following step (1) and step (2), and then reused in a reaction system: step (1): maintaining an amount of bis(aminomethyl)cyclohexane in a liquid before the step (2) at 20% by mass or less, step (2): heating the catalyst to 100 to 500° C. and bringing the catalyst into contact with a hydrogen-containing gas.