ES228033A1 - A procedure for the separation and purification of anhydrides of organic diºcidos. (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the separation and purification of anhydrides of organic diºcidos. (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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Compagnie de Saint Gobain SA
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Compagnie de Saint Gobain SA
Manufactures des Glaces et Produits Chimiques de Saint Gobain SA
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Priority to ES228033ApriorityCriticalpatent/ES228033A1/en
Publication of ES228033A1publicationCriticalpatent/ES228033A1/en
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur
(AREA)
Extraction Or Liquid Replacement
(AREA)
Abstract
Process for the separation and purification of anhydrides of organic diacids, characterized in that it consists of three phases, the first of which consists of dissolving the anhydride treated in a solvent, the second, in distilling the anhydride solution thus obtained in the presence of a aliphatic hydrocarbon that boils above 190 degrees celsius, under a pressure of 360 millimeters of mercury, and the third, in condensing the steam that results from this distillation and cooling the liquid coming from the indicated condensation, separating the mixture in two phases, from one of which, rich in anhydride, it is isolated. (Machine-translation by Google Translate, not legally binding)
ES228033A1956-04-181956-04-18A procedure for the separation and purification of anhydrides of organic diºcidos. (Machine-translation by Google Translate, not legally binding)
ExpiredES228033A1
(en)
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