Process for preparing guanidine

Details Process for preparing guanidine Process for preparing guanidine

C - Chemistry, Metallurgy

07

C

260/544

C07C 273/16 (2006.01) C07C 273/04 (2006.01)

Patent

CA 1084527

ABSTRACT OF THE DISCLOSURE The invention is a process for obtaining guanidine by separating guanidine from a process stream obtained in a urea synthesis process in which ammonia and carbon dioxide are reacted at a high temperature and a high pressure to form urea, with concomitant formation of guanidine. The process stream may be a urea synthesis effluent from a urea synthesis zone, a solution obtained by separating unreacted materials from the effluent, a concentrate of the solution or a mother liquor derived from a urea crystallization zone.

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