Patent FR-2996754-A1 (FR)
Title: Emulsion type cosmetic composition e.g. mascara for coating keratin fibers e.g. eyelashes or eyebrows, comprises an aqueous phase, particles comprising hard wax, an emulsifying system comprising a nonionic surfactant, and a preservative
Inventor: ILEKTI PHILIPPE
IPC: A61K8/34
Filed: 2012-10-15
Abstract: Emulsion type cosmetic composition comprises: an aqueous phase; particles comprising at least one a hard wax, preferably an aqueous dispersion of particles of hard wax; at least one emulsifying system that is adapted to disperse the hard wax and comprises at least one nonionic surfactant; and a preservative consisting of (i) optionally substituted 6-10C-heterocyclic group, (ii) a saturated, optionally substituted (= 5C, preferably 3-5C) hydrocarbon chain, and (iii) polyunsaturated, optionally substituted (= 6C, preferably 3-6C) hydrocarbon chain. Emulsion type cosmetic composition comprises: an aqueous phase; particles comprising at least one a hard wax, preferably an aqueous dispersion of particles of hard wax, where the hard wax has a melting temperature of >= 60[deg] C and is present in an amount of >= 10 wt.%; at least one emulsifying system that is adapted to disperse the hard wax and comprises at least one nonionic surfactant having a hydrophile-lipophile balance value of >= 8, preferably >= 10 at 25[deg] C; and at least one preservative consisting of (i) at least one optionally substituted 6-10C-heterocyclic group (preferably hydroxyl group, carboxyl group, polyhydroxy(1-10C)alkyl group and/or polyhydroxy(1-10C)alkoxy group), (ii) a saturated, optionally substituted (= 5C, preferably 3-5C) hydrocarbon chain (preferably hydroxyl group, carboxyl group, polyhydroxy(1-10C)alkyl group and/or polyhydroxy(1-10C)alkoxy group), and (iii) polyunsaturated, optionally substituted (= 6C, preferably 3-6C) hydrocarbon chain (preferably hydroxyl group, carboxyl group, polyhydroxy(1-10C)alkyl group and/or polyhydroxy(1-10C)alkoxy group). An independent claim is included for preparing the emulsion type cosmetic composition comprising heating the hard wax and optionally additional wax in the aqueous phase at a temperature greater than the melting temperature of the hard wax, adding the emulsifying system, >= 25 wt.% of water, coloring material and optionally other thickening nature compound (such as gums, fillers, pasty fatty substances and water-soluble film-forming polymers) to the aqueous phase, where the total content of hard waxes and optionally additional waxes and the total content of emulsifying system are 2-6 such that the weight ratio of the wax is more than the additional wax/emulsifying system, stirring the mixture at a temperature greater than the melting temperature of the hard wax, disposing the aqueous phase, to a second phase, comprising an aqueous dispersion of particles of film forming polymer, controlling the temperature to 0-45[deg] C, preferably 0-20[deg] C for the preparation of first phase and the second phase that is different, contacting the first and second phases at a temperature of 0-45[deg] C, preferably 0-20[deg] C, stirring the mixture until the temperature of mixture is regulated to 0-45[deg] C preferably 0-20[deg] C, and adding preservatives.