Hair dyes containing amino-nitrobenzoic acid or amino-nitrobenzene sulfonic acids as substantive dyes

US4619666A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• David Rose · Hilden, DE
• Edgar Lieske · Düsseldorf, DE
• Norbert Maak · Neuss, DE

Key dates

• Filing date: Jul 8, 1985
• Grant date: Oct 28, 1986
• Expiry date: Jul 8, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D295/155
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Hair coloring preparations containing substantive hair dyes corresponding to the following general formula ##STR1## in which A is an SO.sub.3 H group or a COOH group, and R.sup.1 and R.sup.2 are hydrogen or other substituents, show high fastness properties and favorable toxicological properties. The substantive hair dyes are preferably present in the hair coloring preparations in a quantity of from 0.01 to 5.0% by weight, optionally in conjunction with known oxidation hair dye precursors.