METHOD OF MANUFACTURING MICRO-CAPSULES

Microcapsules laden with an active agent are prepared by a method comprising: (a) dissolving or dispersing an active agent in a solvent and dissolving a wall forming material in said solvent; (b) dispersing said solvent containing said active agent and wall forming material in a continuous-phase pro...

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Bibliographische Detailangaben
Hauptverfasser:	LEWIS D.H, TICE T.R
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE 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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Beschreibung
Zusammenfassung:	Microcapsules laden with an active agent are prepared by a method comprising: (a) dissolving or dispersing an active agent in a solvent and dissolving a wall forming material in said solvent; (b) dispersing said solvent containing said active agent and wall forming material in a continuous-phase processing medium; (c) evaporating a portion of said solvent from said dispersion of step (b), thereby forming microcapsules containing said active agent in the suspension; and (d) extracting the remainder of the solvent from said microcapsules.