# US 7,407,926 B2 · Oil-containing surfactant gels comprising a mixture of ethoxylated citric acid esters > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,407,926 B2 - Document ID: US7407926B2 - Status: Granted - Kind: B2 - Application number: 11/263,009 - Filed: 2005-10-31 - Published: 2006-05-18 - Granted: 2008-08-05 - Earliest claimed: 2004-11-12 - Assignees: Cognis IP Management GmbH - Inventors: Michael Mueller - Web page: https://patentgrep.com/patent/US7407926B2 ## CPC - A61K 8/042: {Gels} - A61K 8/22: Peroxides; Oxygen; Ozone - A61K 8/39: Derivatives containing from 2 to 10 oxyalkylene groups - A61K 8/86: Polyethers - A61K 8/92: Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof - A61Q 19/00: Preparations for care of the skin - A61Q 5/00: Preparations for care of the hair - A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D) - A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS ## Abstract The invention relates to gel-form cosmetic preparations containing (a) 5 to 50% by weight of surfactants; (b) 5 to 50% by weight of oils and/or waxes; (c) 0 to 15% by weight of water-soluble polyols; and component (a) contains at least 10% by weight, based on component (a) as a whole, of a mixture of citric acid esters of alkoxylated alcohols and the sum of components (a) and (b) in the preparation as a whole being from 10 to 70% by weight. ## Claims ### Claim 1 A gel-form cosmetic preparation comprising: (a) 5 to 50% by weight of surfactants; (b) 5 to 50% by weight of oils and/or waxes; (c) 0 to 15% by weight of water-soluble polyols; wherein, component (a) contains at least 10% by weight, based on component (a) as a whole, of a mixture of citric acid esters of alkoxylated alcohols of the formula R1O(CH2CH2O)nH, wherein, R1 is a linear or branched alkyl or alkenyl group containing 4 to 24 carbon atoms, and n is a number of from 1 to 50 and a sum of components (a) and (b) in the preparation as a whole being from 10 to 70% by weight, and with the proviso that the ratio by weight of monoester to diester in the citric acid ester mixture is in a range of 3:1 to 10:1. ### Claim 2 (depends on 1) The preparation as claimed in claim 1, wherein, in addition to the citric acid esters of alkoxylated alcohols, component (a) contains at least one co-surfactant selected from the group consisting of anionic, cationic, non ionic, amphoteric and zwitterionic surfactants. ### Claim 3 (depends on 2) The preparation as claimed in claim 2, wherein, component (a) contains at least one co-surfactant selected from the group consisting of betaines, acylated amino acids, alkyl ether sulfates, alkyl sulfates and alkyl oligoglycosides. ### Claim 4 (depends on 1) The preparation as claimed in claim 1, wherein, component (a) comprises a mixture of esters of citric acid of ethoxylated alcohols of the formula: R1O(CH2CH2O)nH (I) in which R1 is a linear alkyl group containing 4 to 24 carbon atoms and n is a number of 5 to 9. ### Claim 5 (depends on 1) The preparation of claim 1, wherein, component (c) comprises at least one member selected from the group consisting of glycerol, ethylene glycol and propylene glycol. ### Claim 6 (depends on 1) The preparation of claim 1, wherein, the preparation additionally contains hydrogen peroxide. ### Claim 7 (depends on 1) The preparation of claim 1, wherein, the preparation additionally contains water. ### Claim 8 (depends on 2) The preparation of claim 2, wherein, component (a) comprises a mixture of esters of citric acid of ethoxylated alcohols of the formula: R1O(CH2CH2O)nH (I) in which R1 is a linear or branched alkyl or alkenyl group containing 4 to 24 carbon atoms and n is a number of 1 to 20. ### Claim 9 (depends on 8) The preparation of claim 8, wherein, component (c) comprises at least one member selected from the group consisting of glycerol, ethylene glycol and propylene glycol. ### Claim 10 (depends on 9) The preparation of claim 9, wherein, the preparation additionally contains hydrogen peroxide. ### Claim 11 (depends on 8) The preparation of claim 8, wherein, the preparation additionally contains water. ### Claim 12 (depends on 3) The preparation of claim 3, wherein, component (a) comprises a mixture of esters of citric acid of ethoxylated alcohols of the formula: R1O(CH2CH2O)nH (I) in which R1 is a linear or branched alkyl or alkenyl group containing 4 to 24 carbon atoms and n is a number of 1 to 10. ### Claim 13 (depends on 12) The preparation of claim 12, wherein, component (c) comprises at least one member selected from the group consisting of glycerol, ethylene glycol and propylene glycol. ### Claim 14 (depends on 13) The preparation of claim 13, wherein, the preparation additionally contains hydrogen peroxide. ### Claim 15 (depends on 12) The preparation of claim 12, wherein, the preparation additionally contains water. ### Claim 16 (depends on 4) The preparation of claim 4, wherein, component (c) comprises at least one member selected from the group consisting of glycerol, ethylene glycol and propylene glycol. ### Claim 17 (depends on 4) The preparation of claim 4, wherein, the preparation additionally contains hydrogen peroxide. ### Claim 18 (depends on 4) The preparation of claim 4, wherein, the preparation additionally contains water. ### Claim 19 (depends on 5) The preparation of claim 5, wherein, the preparation additionally contains water.