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IG Farbenindustrie AG
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IG Farbenindustrie AG
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Application grantedgrantedCritical
Publication of FR859415ApublicationCriticalpatent/FR859415A/en
C05C9/00—Fertilisers containing urea or urea compounds
C05C9/005—Post-treatment
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
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)
FR859415D1938-08-271939-08-23
Process for producing urea by crystallization from aqueous solutions
ExpiredFR859415A
(en)