Process for making crystals

Details Process for making crystals Process for making crystals

B - Operations, Transporting

01

J

B01J 2/02 (2006.01) A61K 9/00 (2006.01) B01J 2/18 (2006.01)

Patent

CA 2680105

A process for preparing crystalline particles of an active principal in the presence of ultrasonic irradiation that comprises contacting a solution of a solute in a solvent in a first flowing stream with an anti-solvent in a second flowing stream causing the mixing thereof, wherein the flow rate ratio of the anti- solvent: solvent is higher than 20:1, and collecting crystals that are generated.

L'invention porte sur un procédé de préparation de particules cristallines d'un principe actif en présence d'une irradiation ultrasonique. Ce procédé comprend les opérations consistant à mettre en contact une solution d'un soluté dans un solvant dans un premier courant d'écoulement avec un anti-solvant dans un second courant d'écoulement, provoquant le mélange de ceux-ci, le rapport des débits anti-solvant : solvant étant supérieur à 20 : 1, et à recueillir les cristaux qui sont générés.

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