Coloring agent for keratin fibers

US7125427B2 · kind B2 · utility

Assignee

• Wella GmbH · DE

Inventors

• Juergen Schmenger · Weiterstadt, DE
• Wilhelm Abels · Simi Valley, US
• Manfred Schmitt · Munich, DE
• Gabriele Hess · Langen (Hessen), DE
• Anke Frank · Frankfurt, DE

Key dates

• Filing date: Jul 12, 2002
• Grant date: Oct 24, 2006
• Expiry date: May 6, 2023

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K8/87
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The colorants for keratin fibers are based on oxidation dye precursors and/or direct dyes and contain a combination of (a) at least one nonionic, amphiphilic associative thickener, (b) at least one fatty alcohol that is liquid at 25° C. and (c) PEG-150/stearyl alcohol/SMDI copolymer in a suitable cosmetic carrier.