Method for the preparation of melamine

Details Method for the preparation of melamine Method for the preparation of melamine

C - Chemistry, Metallurgy

07

D

260/249.7

C07D 251/60 (2006.01)

Patent

CA 1128516

METHOD FOR THE PREPARATION OF MELAMINE Abstract of the Disclosure An improved method for the preparation of melamine by the conversion of urea and/or thermal decomposition products thereof. The urea and/or thermal decomposition products are converted to melamine in a fluidized bed of catalytically active material in the presence of a gas mixture containing ammonia and carbon dioxide. The partial pressure of ammonia in the gas mixture in the fluidized bed is maintained at a level of at least 70 kPa, whereby the formation of deamination by-products is sub- stantially reduced.

351211

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