Foaming oil-in-water emulsion based on nonionic surfactants, a fatty phase and a crosslinked cationic or anionic polymer, and its use in topical applications
US6162834A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1998 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Nov 6, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/5426
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A foaming oil-in-water emulsion in the form of a cream comprising, in an aqueous medium, at least: a) from 5 to 20% of an exclusively nonionic surfactant system comprising at least one foaming nonionic surfactant; b) from 10 to 50% of an oily phase containing at least one water-insoluble oil whose solubility parameters dD, dP and dH according to Hansen's solubility space satisfy the conditions: EQU 15.5(J/cm.sup.3).sup.1/2 .ltoreq.dD.ltoreq.18.0(J/cm.sup.3).sup.1/2 and EQU 0(J/cm.sup.3).sup.1/2 .ltoreq.dA.ltoreq.6.5(J/cm.sup.3).sup.1/2 with EQU dA=(dP.sup.2 +dH.sup.2).sup.1/2 c) and, as a gelling agent, at least one crosslinked homopolymer or copolymer formed from at least one cationic or anionic monomer containing ethylenic unsaturation and from a crosslinking agent containing polyethylenic unsaturation. This composition is useful in cosmetics, dermatology and hygiene as a base for cleansing products for the skin, the hair, the mucous membranes and the scalp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.