Patent · US Expired

Microemulsions, especially for skin or hair treatment

US7399479B2 · kind B2 · utility

3Cited by

4References

20Claims

0Family size

Assignee

Wella GmbH · DE

Inventors

Sarah Maillefer · Middes, CH
Daniel Chambettaz · Fribourg, CH
Michael Franzke · Roßdorf, DE

Key dates

Filing date	Jan 31, 2005
Grant date	Jul 15, 2008
Priority date	—
Expiry date	Jan 15, 2026

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61Q5/06
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The preferably optically clear, transparent or translucent micromulsion contains from 20 to 60 percent by weight water; from 3 to 20 percent by weight of an oil phase, which contains hydrophobic oil that is liquid at 25° C. and optionally dissolved lipophilic materials, and from 20 to 60 percent by weight of an emulsifier mixture. The emulsifier mixture contains at least one first emulsifier, which is an ethoxylated castor oil and/or an ethoxylated hydrogenated castor oil, and at least one second emulsifier with an NRU50 value greater than 110 μg/ml. The microemulsion is usable as a cosmetic, dermatological or pharmaceutical preparation, especially as an agent for hair treatment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.