Post-processing method of the isocyanate adduct

The present invention relates to a post-processing method of the isocyanate adduct, a) a step of reacting the isocyanate adducts with pure ammonia, A step of post-processing the reaction product obtained in b) step a), The amine formed by c) which the step of circulating the preparation of isocyanates, It provides a post-processing method of the isocyanate adduct which comprises a. .BACKGROUND