Method for dyeing keratin material, comprising the use of an organic C1-C6 alkoxy silane and tannic acid

US11896701B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Phillip Jaiser · Langenfeld, DE
• Marc Nowottny · Genhülsen, DE
• Carsten Mathiaszyk · Essen, DE
• Gabriele Weser · Neuss, DE
• Torsten Lechner · Langenfeld, DE
• Caroline Kriener · Dressendorf, DE
• Juergen Schoepgens · Schwalmtal, DE
• Ulrike Schumacher · Dressendorf, DE
• Claudia Kolonko · Remscheid, DE
• Udo Erkens · Willich, DE

Key dates

• Filing date: Oct 16, 2020
• Grant date: Feb 13, 2024
• Expiry date: Oct 16, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/884
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The subject of the present disclosure is a process for dyeing keratinous material, in particular human hair. The process includes applying a first composition (A) to the keratinous material. The first composition includes (A1) one or more organic C1-C6 alkoxysilanes and/or condensation products thereof, and (A2) at least one colorant compound selected from the group of pigments and direct dyes. A second composition (B) is applied to the keratinous material. The second composition (B) includes (B1) Tannic acid.