| abstract |
A method for producing a bis(aminomethyl)cyclohexane having an isomerization step of isomerizing a cis-isomer of 1,4-bis(aminomethyl)cyclohexane and/or a trans-isomer of 1,3-bis(aminomethyl)cyclohexane at the bottom part of a distillation tower to obtain a trans-isomer of 1,4-bis(aminomethyl)cyclohexane and/or a cis-isomer of 1,3-bis(aminomethyl)cyclohexane; and a distillation step of separating the trans-isomer of 1,4-bis(aminomethyl)cyclohexane and/or the cis-isomer of 1,3-bis(aminomethyl)cyclohexane by distillation, in the top part of the distillation tower, in which the isomerization reaction temperature in the isomerization step is 80 to 140° C., and the isomerization step and the distillation step are simultaneously carried out. |