Patent ID: 6649577
Filing Date: 2003-11-18
Classification: A61K,A61Q,Y10S

Abstract:
A water-in-oil (W/O) emulsion having a viscosity of at most 5000 mPaÂ·s, said W/O emulsion comprising:a) an aqueous phase comprising a content of water and water-soluble substances totaling at least 85% by weight, based on a total weight of the emulsion; b) an oil phase comprising a content of lipids, emulsifiers and lipophilic constituents totaling at most 15% by weight, based on a total weight of the emulsion, wherein the oil phase comprises at least 75% by weight based on the weight of the oil phase, of one or more substances selected from the group consisting of: i) non-polar lipids which are liquid at room temperature and have a polarity of greater than 30 mN/m; and ii) silicones of any polarity; c) at least one interface-active substance selected from the group consisting of substances of the formula (I); â€ƒwhere A and Aâ€² are identical or different organic radicals selected from the group consisting of branched and unbranched, saturated and unsaturated alkyl and acyl radicals and hydroxyacyl radicals having 10-30 carbon atoms, and also from the group consisting of hydroxyacyl groups connected to one another via ester functions in accordance with the following scheme: â€ƒwhere Râ€² is selected from the group consisting of branched and unbranched alkyl groups having 1 to 20 carbon atoms and Râ€³ is selected from the group consisting of branched and unbranched alkylene groups having 1 to 20 carbon atoms, and b is a number from 0 to 200; a is a number from 1 to 100: X is a single bond or the group: R1 and R2 independently represent H or methyl; and R3 is selected from the group consisting of H and branched and unbranched, saturated and unsaturated alkyl and acyl radicals having 1 to 20 carbon atoms.