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Stamicarbon BV
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Stamicarbon BV
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Publication of FR1140149ApublicationCriticalpatent/FR1140149A/fr
C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
C07C273/14—Separation; Purification; Stabilisation; Use of additives
C07C273/16—Separation; Purification
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
FR1140149D1955-01-141956-01-12Procédé pour la préparation d'urée à gros grains
ExpiredFR1140149A
(fr)