C - Chemistry – Metallurgy – 07 – H
Patent
C - Chemistry, Metallurgy
07
H
C07H 1/06 (2006.01)
Patent
CA 2620787
A process of removal of pyridine or a pyridine analogue from a composition or a Process Stream in a process of production of 4,1~, 6~ trichlorogalactosucrose is described comprising reacting pyridine with an acid, the said acid being used preferably in gaseous form, achieving complete precipitation of the salt of pyridine in higher alcoholic solvents and non- polar solvents, filtering off the precipitate of the said salt of pyridine to achieve removal of pyridine from the reaction system and optionally regenerating and recovering pyridine by reacting the said salt with alkali.
La présente invention concerne un processus d'élimination de pyridine ou d'analogues de pyridine d'une composition ou d'un flux de processus dans un processus de production de 4,1', 6' trichlorogalactosaccharose, qui consiste à faire réagir la pyridine avec un acide, cet acide étant de préférence utilisé sous forme gazeuse, à effectuer une précipitation complète du sel de pyridine dans des solvants les plus alcooliques et dans des solvants non polaires, à filtrer le précipité de ce sel de pyridine de façon à obtenir l'élimination de la pyridine du système de réaction et éventuellement à régénérer et récupérer la pyridine par la réaction de ce sel avec un alcalin.
Aurora Sundeep
Ratnam Rakesh
Pharmed Medicare Pvt. Ltd.
Ridout & Maybee Llp
V. B. Medicare Private Limited
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