PROCESSES TO GENERATE SUBMICRON PARTICLES OF WATER-INSOLUBLE COMPOUNDS

Submicron particles of water-insoluble compounds, particularly drugs, are prepared by simultaneously stabilizing microparticulate suspensions of same with surface modifier molecules by rapid expansion into an aqueous medium from a compressed solution of the compound and surface modifiers in a liquef...

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Main Authors PACE, GARY, W, HENRIKSEN, INGE, B, VACHON, G., MICHAEL, KRUKONIS, VAL, GODINAS, ANTHONY, MISHRA, K., AWADHESH
Format Patent
LanguageEnglish
French
Published 23.12.1999
Edition6
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:Submicron particles of water-insoluble compounds, particularly drugs, are prepared by simultaneously stabilizing microparticulate suspensions of same with surface modifier molecules by rapid expansion into an aqueous medium from a compressed solution of the compound and surface modifiers in a liquefied gas and optionally homogenizing the aqueous suspension thus formed with a high pressure homogenizer. L'invention concerne la préparation de particules submicroniques de composés insolubles dans l'eau, notamment de médicaments, qui comporte les étapes consistant à stabiliser simultanément des suspensions de microparticules de ceux-ci avec des molécules de modificateur de surface par expansion rapide dans un milieu aqueux, à partir d'une solution comprimée du composé et de modificateurs de surface dans un gaz liquéfié; et éventuellement homogénéiser la suspension aqueuse ainsi formée à l'aide d'un homogénéisateur haute pression.
Bibliography:Application Number: WO1999US13755