Hair-colorant preparations and methods of using the same

US6740130B2 · kind B2 · utility

Assignee

• Cognis Deutschland GmbH & Co. KG · DE

Inventors

• Celia Sander · Duisburg, DE
• Anke Eggers · Goldkronach, DE
• Josef Koester · Goldkronach, DE
• Werner Seipel · Hilden, DE
• Hermann Hensen · Haan, DE

Key dates

• Filing date: Sep 5, 2002
• Grant date: May 25, 2004
• Expiry date: Oct 16, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q5/065
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Hair-colorant compositions containing (a) from 0.2 to 25% by weight of an alkoxylated carboxylic acid ester; (b) from 0.5 to 25% by weight of a fatty acid partial glyceride; and (c) from 0.1 to 15% by weight of a hair dye; wherein all percentages by weight are based on the total composition, are disclosed. Methods of reducing cloudiness in hair-colorant compositions by combining a hair dye and a mixture of an alkoxylated carboxylic acid ester and a fatty acid partial glyceride are also disclosed.