Coloring agent comprising transition metals

US6648925B1 · kind B1 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien (Henkel KGAA) · DE

Inventors

• Bernd Mayer · Graz, AT
• Peter Kuhm · Hilden, DE
• Horst Hoeffkes · Goldkronach, DE
• Gertrud Ewald · Solingen, DE
• Hans-Oscar Stephan · Duisburg, DE
• Melita Heller · Mülheim an der Ruhr, DE

Key dates

• Filing date: Sep 25, 2001
• Grant date: Nov 18, 2003
• Expiry date: Sep 25, 2021

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/56
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention relates to a composition for coloring keratin fibers and a method of using the same. The composition of the present invention contains at least one dye precursor, and one or more clathrate compounds that contain transition metal complexes.