Hair dyes: diresorcyl sulphide, sulphoxide or sulphone coupling agents

US4552565A · kind A · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Norbert Maak · Neuss, DE
• Edgar Lieske · Düsseldorf, DE

Key dates

• Filing date: Nov 1, 1984
• Grant date: Nov 12, 1985
• Expiry date: Nov 1, 2004

Classification

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

Abstract

Hair dyes containing oxidation dye precursors in a cosmetic carrier contain as coupler substances compounds corresponding to formula I ##STR1## in which Z is a sulfur atom, an >SO group or an >SO.sub.2 group or salts thereof. As developer substances, the hair dyes contain the developers normally used in oxidation hair dyes, preferably aromatic and/or heterocyclic diamines or a 2,4,5,6-tetraamino pyrimidine. The new couplers produce color tones in the brown range with good fastness properties and a negligible tendency towards skin staining.