C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 209/82 (2006.01) C07C 231/22 (2006.01) C07H 1/06 (2006.01)
Patent
CA 2653192
This invention comprises an improved process for recovery and purification of DMF from an aqueous process stream containing DMF with or without inorganic impurities, particularly from process stream of a process of manufacture of the high intensity sweetener Trichlorogalactosucrose, by adsorption on an adsorbent having selective affinity towards dimethylformamide, followed by elution in pure form by eluting by an appropriate eluent, including methanol.
Cette invention concerne un procédé amélioré pour la récupération et la purification du DMF à partir d'un courant de traitement aqueux contenant du DMF avec ou sans impuretés inorganiques, en particulier à partir d'un courant de traitement d'un procédé de fabrication du trichlorogalactosucrose édulcorant d'intensité élevée, par l'adsorption sur un adsorbant ayant une affinité sélective envers le diméthylformamide, en faisant suivre par une élution sous forme pure par élution par un éluant approprié, comprenant le méthanol.
Aurora Sundeep
Ratnam Rakesh
Ridout & Maybee Llp
V.b. Medicare Pvt. Ltd.
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