Agents for dyeing keratin fibres, containing at least one dimeric, dicationic azo dye with special substitution pattern

US10406089B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Antje Gebert-Schwarzwaelder · Neuss, DE
• Helmut Giesa · Meerbusch, DE
• Astrid Kroos · Monheim, DE

Key dates

• Filing date: Oct 14, 2015
• Grant date: Sep 10, 2019
• Expiry date: Oct 14, 2035

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/4322
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The disclosure relates to agents for dyeing keratin fibers, in particular human hair, containing, in a cosmetic carrier (a) at least one direct dye of formula (I), wherein Het1, Het2 represent cationic heterocycles; R1, R3 respectively represent a substitute which is not hydrogen, and Q represents a grouping of formula (VIII), (IX), or (X).