Method for producing hair coloring preparations with improved viscosity

US6572663B1 · kind B1 · utility

Assignee

• Cognis Deutschland GmbH & Co. KG · DE

Inventors

• Adrian Pitfield · Paragon Road, GB
• Heribert Lorenz · Groß-Bieberau, DE
• Frank Golinski · Darmstadt, DE
• Joerg Kahre · Monheim, DE
• Thomas Foerster · Goldkronach, DE
• Markus Sumser · Herne, DE
• Armin Wadle · Erkrath, DE

Key dates

• Filing date: Jun 13, 2000
• Grant date: Jun 3, 2003
• Expiry date: Jun 13, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q5/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A process for making a hair dye preparation involving: (a) providing an aqueous surface-active fatty alcohol dispersion containing: (i) a fatty alcohol; and (ii) a surfactant; (b) providing an oil component; (c) providing a hair dye component; and (d) combining (a)-(c), at a temperature of from 18 to 25° C., to form the hair dye preparation.