Aqueous carrier systems for water-insoluble aromatic polymers

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 25/18 (2006.01) A61K 8/14 (2006.01) A61K 8/44 (2006.01) A61K 8/55 (2006.01) A61K 8/81 (2006.01) A61K 8/86 (2006.01) A61Q 5/00 (2006.01) A61Q 5/12 (2006.01) A61Q 17/04 (2006.01) A61Q 19/00 (2006.01)

Patent

CA 2376311

A composition containing at least one organic phospholipid capable of forming bilayers in aqueous solution; at least one amphoteric surfactant; at least one nonionic surfactant present in an amount by weight equal to or greater than the amount of the phospholipid; and a water-insoluble polymer comprising at least one aromatic monomeric residue, wherein said aromatic monomeric residue comprises at least one aromatic unit substituted with at least one hydroxyl group. The invention also relates to a delivery system for water-insoluble ingredients containing the above components, and an aqueous phase, wherein the organic phospholipid, amphoteric surfactant, and nonionic surfactant are present in a combined amount sufficient to allow the water-insoluble polymer to be incorporated into the system. A method of treating a keratinous substance is also disclosed.

La présente invention concerne une composition contenant au moins un phospholipide organique pouvant former des bi-couches en solution aqueuse, au moins un agent tensioactif amphotère, au moins un agent tensioactif anionique présent en quantité égale ou supérieure en poids à celle du phospholipide, et un polymère insoluble dans l'eau comportant au moins un résidu monomère aromatique, ce résidu possédant au moins une unité aromatique portant comme substituant au moins un groupe hydroxyle. L'invention concerne aussi un système de distribution d'ingrédients insolubles dans l'eau, contenant les composants ci-dessus, et une phase aqueuse dans laquelle le phospholipide organique, l'agent tensioactif amphotère, et l'agent tensioactif anionique sont présents en quantité suffisante pour permettre l'incorporation, dans le système, du polymère organique insoluble dans l'eau. L'invention concerne aussi un procédé de traitement de substance kératinique.

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