ES285555A1 - An improved procedure for recycling non-reactioned carbamate (Machine-translation by Google Translate, not legally binding)
- Google Patents
An improved procedure for recycling non-reactioned carbamate (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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Publication date
Application filed by Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpAfiledCriticalMontedison SpA
Publication of ES285555A1publicationCriticalpatent/ES285555A1/en
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
C07C273/04—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 from carbon dioxide and ammonia
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P20/00—Technologies relating to chemical industry
Y02P20/141—Feedstock
Abstract
An improved process for recycling the unreacted carbamate, in the synthesis of urea based on ammonia and carbon dioxide, with two distillation stages, characterized by being used for absorbing the vapors produced by film absorbers as heat exchangers. (Machine-translation by Google Translate, not legally binding)
ES0285555A1962-02-281963-02-27An improved procedure for recycling non-reactioned carbamate (Machine-translation by Google Translate, not legally binding)
ExpiredES285555A1
(en)
Procedure for the preparation of N- (2-amino-3,5-dibromobenciliden) -trans-4-amino-ciclohexanol. (Machine-translation by Google Translate, not legally binding)
Process for the preparation of modified curable acrolein resins and solutions thereof, as well as articles fitted with covers, obtained using these solutions
Procedure for the preparation of N- (5-nitro-2-furfurideno) -3-amino-2-oxazolidenos and new chemical compounds prepared in the course of the same (Machine-translation by Google Translate, not legally binding)