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US 2023/0390180 A1Published application
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OwnerMathieu GOUTAYER, Mathieu JACQUOTinventors
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OwnerMathieu GOUTAYER, Mathieu JACQUOTinventors
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The present invention concerns a dispersion formed of a dispersed phase in the form of drops and a continuous phase, comprising a fatty phase and an aqueous phase non-miscible with each other at ambient temperature and atmospheric pressure, one of the phases among the fatty phase and the aqueous phase being the dispersed phase and the other phase among the fatty phase and aqueous phase being the continuous phase, wherein the drops comprise at least one core and at least one shell formed of at least one anionic polymer and at least one cationic polymer, the cationic polymer being a compound having the following formula (I): where: n is an integer of 1 to 5; X1 and X2, the same or different, are —O—, —CH2— or —NH—; R1, R2 and R3, the same or different, are each independently a divalent alkylene radical having 20 to 50 carbon atoms; R4 and R5, the same or different, are each independently H, OH or NH2, at least one of the groups R4 and R5 being NH2.
A dispersion formed of a dispersed phase in the form of drops and a continuous phase, comprising a fatty phase and an aqueous phase non-miscible with each other at ambient temperature and atmospheric pressure, one of the phases from among the fatty phase and the aqueous phase being the dispersed phase and the other phase among the fatty phase and the aqueous phase being the continuous phase,
The dispersion according to any of the preceding claims wherein, in formula (I), X1 and X2 are —NH—.
The dispersion according to any of the preceding claims wherein, in formula (I), R4 and R5 are NH2.
The dispersion according to any of the preceding claims, wherein each drop comprises from 0.001% to 10%, preferably from 0.005% to 5%, better still from 0.01% to 2.5%, more particularly from 0.05% to 1%, even from 0.1% to 0.5% by weight of cationic polymer(s) relative to the total weight of the phase comprising the same, and in particular the fatty phase.
The dispersion according to any of the preceding claims, wherein the anionic polymer is a polymer comprising monomer units comprising at least one carboxylic acid chemical function, preferably selected from among carbomers or an acrylates/C10-30 alkyl acrylate Crosspolymer, and preferably a carbomer.
The dispersion according to any of the preceding claims, wherein said dispersion comprises from 0.01% to 10%, preferably from 0.05% to 5%, more preferably from 0.10% to 2.5%, even from 0.5% to 1% by weight of anionic polymer(s), of carbomers in particular, relative to the total weight of the phase comprising the same, even of said dispersion.
The dispersion according to any of the preceding claims, wherein the drops comprise a core that is liquid or at least partially gelled or at least partially thixotropic, said core being single-phase or comprising an intermediate drop of an intermediate phase and at least one, preferably only one, inner drop of an inner phase arranged in the intermediate phase, the intermediate phase and the inner phase being non-miscible with each other at ambient temperature and atmospheric pressure.
The dispersion according to any of the preceding claims, wherein the mean diameter of the drops of the dispersed phase is from 0.2 μm to 3 000 μm, preferably from 20 μm to 2 500 μm, in particular from 200 μm to 2 000 μm, and most preferably from 500 μm to 1 500 μm.
The dispersion according to any of the preceding claims, wherein the fatty phase further comprises at least one lipophilic gelling agent, preferably selected from among organic or mineral, polymeric or molecular lipophilic gelling agents;
The dispersion according to any of the preceding claims, comprising from 0.5% to 70%, preferably from 1% to 60%, in particular from 1.5% to 50%, better still from 2% to 40%, in particular from 5% to 30%, and most preferably from 10% to 20% by weight of lipophilic gelling agent(s) relative to the total weight of the fatty phase comprising the same.
The dispersion according to any of the preceding claims, characterized in that it does not contain a surfactant.
Dependencies are inferred from the claim text.