Method for dyeing keratin material, comprising the use of an organic C1-C6 alkoxy silane and a copolymer of styrene and maleic acid (anhydride)

US11890366B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

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

Key dates

• Filing date: Oct 16, 2020
• Grant date: Feb 6, 2024
• Expiry date: Oct 16, 2040

Classification

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

Abstract

A method for coloring keratinous material, in particular human hair, includes the step of applying on the keratinous material: