Agents for dyeing keratin fibers, containing at least one dimeric, ring-bridged azo dye

US9889321B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Antje Gebert-Schwarzwaelder · Neuss, DE
• Helmut Giesa · Meerbusch, DE
• Melanie Moch · Dormagen, DE

Key dates

• Filing date: Oct 14, 2015
• Grant date: Feb 13, 2018
• Expiry date: Oct 14, 2035

Classification

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

Abstract

The present 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 Het 1, Het 2 represent a cationic heterocycle, and A1, A2, independently of one another, represent a grouping of formulas (VIII) or (IX), wherein n represents a whole number of between 2-6, and m, p, independently of one another, represent the numbers 2 or 3.