| abstract |
The present invention,n n n a) reacting the methylene donor with an aromatic amine in the presence of a homogeneous acid catalyst;n n n b) removing the homogeneous acid catalyst from the reaction product; Andn n n c) working up and purifying the reaction productn n n Regarding a method for producing diaminodiarylmethane comprising a homogeneous acid catalyst, the solid acid adsorbent is removed from the reaction mixture. |