| abstract |
(a) aus Gelbildnem, Chitosanen und Wirkstoffen eine Matrix zubereitet, (b) die Matrix in einer Ölphase dispergiert, (c) die dispergierte Matrix mit wäßrigen Lösungen anionischer Polymere behandelt und dabei dienÖlphase entfernt. Microcapsules with average diameters in the range from 0.1 to 5 mm, consisting of an enveloping membrane and a matrix containing at least one active ingredient, are proposed in that (a) a matrix is prepared from gel formers, chitosans and active ingredients, (b) the matrix is dispersed in an oil phase, (c) treating the dispersed matrix with aqueous solutions of anionic polymers and thereby removing the oil phase. |