A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 8/23 (2006.01) A61K 8/02 (2006.01) A61Q 1/12 (2006.01)
Patent
CA 2254794
The invention concerns a method for preparing a solid gypsum plaster based composition, in particular cosmetic, consisting in the following steps: preparing a powdery mixture containing at least a semi-hydrated calcium sulphate in powder form; adding an aqueous phase to the powdery mixture; kneading the powdery mixture and the aqueous phase to obtain a castable mixture; pouring the castable mixture into a mould; allowing the mixture to harden by hydrating the semi-hydrated calcium sulphate into di-hydrated calcium sulphate. The method is characterised in that it consists in adding in the powdery mixture, before adding the aqueous phase, a non-aqueous liquid preserving system. The invention also concerns a composition, in particular cosmetic, obtainable by this method.
L'invention concerne un procédé de préparation d'une composition, notamment cosmétique, solide à base de plâtre comprenant les étapes suivantes: on prépare un mélange pulvérulent comprenant au moins du sulfate de calcium hémihydraté sous forme de poudre, on ajoute au mélange pulvérulent une phase aqueuse, on malaxe le mélange pulvérulent et la phase aqueuse de façon à obtenir un mélange coulable, on verse le mélange coulable dans un moule, on laisse durcir le mélange par hydratation du sulfate de calcium hémihydraté en sulfate de calcium dihydraté, caractérisé par le fait que l'on ajoute dans le mélange pulvérulent, avant d'ajouter la phase aqueuse, un système conservateur liquide non aqueux. L'invention concerne aussi une composition, notamment cosmétique, susceptible d'être obtenue par le procédé.
Bodelin-Lecomte Sophie
Le Gars Guenola
L'oreal
Robic
LandOfFree
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