申请人:Yoshimura Naritoshi
公开号:US20130197269A1
公开(公告)日:2013-08-01
A method for producing bis(aminomethyl)cyclohexanes includes a nuclear hydrogenation step of producing hydrogenated phthalic acids or phthalic acid derivatives by nuclear hydrogenation of phthalic acids or phthalic acid derivatives of at least one selected from the group consisting of phthalic acids, phthalic acid esters, and phthalic acid amides; a cyanation step of treating the hydrogenated phthalic acids or phthalic acid derivatives obtained in the nuclear hydrogenation step with ammonia, thereby producing dicyanocyclohexanes; and an aminomethylation step of treating the dicyanocyclohexanes obtained in the cyanation step with hydrogen, thereby producing bis(aminomethyl)cyclohexanes. In the cyanation step, metal oxide is used as a catalyst, and the obtained dicyanocyclohexanes have a metal content of 3000 ppm or less.
一种生产双(氨甲基)环己烷的方法,包括以下步骤:核氢化步骤,通过对邻苯二甲酸或邻苯二甲酸衍生物进行核氢化,得到氢化的邻苯二甲酸或邻苯二甲酸衍生物,所述邻苯二甲酸或邻苯二甲酸衍生物至少选自邻苯二甲酸、邻苯二甲酸酯和邻苯二甲酸酰胺组成的群体;青化步骤,将在核氢化步骤中获得的氢化邻苯二甲酸或邻苯二甲酸衍生物与氨处理,从而产生二氰基环己烷;氨甲基化步骤,将在青化步骤中获得的二氰基环己烷与氢处理,从而产生双(氨甲基)环己烷。在青化步骤中,使用金属氧化物作为催化剂,所获得的二氰基环己烷的金属含量为3000 ppm或更低。