Process for preparing melamine

Details Process for preparing melamine Process for preparing melamine

C - Chemistry, Metallurgy

07

D

260/249.7

C07D 251/60 (2006.01)

Patent

CA 1244423

PROCESS FOR PREPARING MELAMINE Abstract of the Disclosure An improved process for the preparation of melamine from urea or thermal decomposition products thereof. A melamine containing reaction mixture is cooled with an aqueous medium to form an aqueous product stream containing melamine and reaction by- products. Product melamine is separated from the aqueous product stream leaving a residual aqueous stream which is recycled into the process. A por- tion of this residual aqueous stream still contain- ing reaction by-product is treated to remove by- products therefrom prior to being recycled to the process.

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