PRODUCTION OF DIGUANAMINE

PURPOSE: To obtain a diguanamine in high yield in a mild state without generating extreme heat by reacting a new monoguanamine with dicyandiamide under specific conditions. CONSTITUTION: A diguanamine of formula II [(4,6-diamino-1,3,5-triazin-2-yl) groups combine at 1,2-, 1,3- or 1,4-positions] is obtained by reacting a monoguanamine of formula I [(4,6-diamino-1,3,5-triazin-2-yl) group combines at 2-, 3- or 4-position] with dicyandiamide in the presence of a basic catalyst. An alkali metal, its hydroxide, an alkaline earth metal hydroxide, an amine, ammonia, etc., is used as the basic catalyst. The reaction is preferably carried out in a non-aqueous protic solvent or in an aprotic polar solvent. Further, the reaction is preferably carried out at 60-200 deg.C. This method can suppress the production of byproduct extremely, realizes simple production processes such as separation and purification of the products, and enables easy handling of the raw material.