B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 2/04 (2006.01) B05B 7/08 (2006.01)
Patent
CA 2438275
An apparatus is described for micron and submicron particles formation of a substance using the GAS process, comprising a particles formation vessel (22) and means for introducing a solution of the substance and a supercritical fluid into the particles formation vessel (22), wherein said means comprise a nozzle (27) having a central orifice (39) serving to carry a flow of solution, and a plurality of separate outer orifices (41) serving to carry a flow of pure supercritical fluid or a flow of supercritical fluid mixed with a modifier, such that the solvent is extracted from the solution by the supercritical fluid and precipitation of micron and submicron particles occurs. Also a process is described, carried out with such an apparatus.
La présente invention concerne un appareil permettant de former des particules d'une substance d'un micron et inférieures au micron au moyen du processus GAS, qui comprend une cuve (22) de formation de particules et un organe destiné à introduire une solution de la substance et un fluide supercritique dans cette cuve (22) de formation de particules. Cet organe comprend une buse (27) possédant un orifice (39) central qui sert à porter un flux de solution, ainsi qu'une pluralité d'orifices (41) de sortie séparés qui servent à porter un flux de fluide supercritique pur ou un flux de fluide supercritique mélangé avec un additif, de sorte que le solvant soit extrait de cette solution par le fluide supercritique et qu'une précipitation de particules d'un micron ou inférieures au micron survienne. Cette invention concerne aussi un processus mis en oeuvre avec cet appareil.
Del Re Giovanni
Di Giacomo Gabriele
Di Palma Cesare
Putrignano Matteo
Dompe Pha.r.ma S.p.a
Dompe S.p.a.
Kirby Eades Gale Baker
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