PROCEDE DE PREPARATION DE CAPSULES COMPRENANT AU MOINS UN COMPOSE VOLATILE ET CAPSULES OBTENUES

The present invention relates to a process for preparing solid microcapsules comprising the following steps:a) preparation of a composition C1, which is either a composition C1a, comprising a single hydrophobic solid particle, or a composition C1b comprising a plurality of hydrophobic solid particle...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MOUSNIER, LUDIVINE, WALTERS, JAMIE, DEMOULIN, DAMIEN
Format:	Patent
Sprache:	fre
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON HUMAN NECESSITIES HYGIENE MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention relates to a process for preparing solid microcapsules comprising the following steps:a) preparation of a composition C1, which is either a composition C1a, comprising a single hydrophobic solid particle, or a composition C1b comprising a plurality of hydrophobic solid particles dispersed in a hydrophilic phase,b) addition with stirring of the composition C1 in a polymeric composition C2 at a temperature Tb, whereby an emulsion (E1) is obtained;c) addition, with stirring, of the emulsion (E1) in a composition C3 at a temperature Tc, whereby a double emulsion (E2) is obtained;d) applying a shear to the emulsion (E2), whereby a double emulsion (E3) is obtained; ande) polymerization of the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.