Use of 1,2,3,4-tetrahydroquinoxalines as oxidation dye precursors in oxidative coloring formulations

US5752984A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Georg Knuebel · Goldkronach, DE
• David Rose · Hilden, DE
• Horst Hoeffkes · Goldkronach, DE
• Bernd Meinigke · Leverkusen, DE

Key dates

• Filing date: Aug 12, 1996
• Grant date: May 19, 1998
• Expiry date: Aug 12, 2016

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K8/494
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

An oxidative coloring composition for coloring human hair cointaining an oxidation dye precursor in a water-containing carrier, wherein the dye precursor comprises 1,2,3,4-tetrahydroquinoxalines corresponding to formula (I): ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of one another represent hydrogen, C.sub.1-4 alkyl groups, benzyl groups, 2-phenylethyl groups or C.sub.2-4 hydroxyalkyl groups and X, Y and Z represent hydrogen, fluorine, chlorine, bromine or iodine atoms or C.sub.1-4 alkyl groups, and wherein at least one of the groups X, Y and Z is hydrogen.