1,3-Diamino-4-(2',2',2',-trifluoroethoxy)-benzene, method of producing the same, and hair coloring composition containing the same

US4543425A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Eugen Konrad · Darmstadt, DE
• Hans-Jurgen Braun · Frielendorf, DE
• Herbert Mager · Freiberg, DE
• Friedrich Noser · Bonnefontaine, CH
• Max Bracher · Albligen, CH

Key dates

• Filing date: Aug 5, 1983
• Grant date: Sep 24, 1985
• Expiry date: Aug 5, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C205/37
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

1,3-diamino-4-(2',2',2'-trifluoroethoxy)-benzene, as well as its acid addition salts, are used as new compounds to serve as coupler substance in hair dyeing compositions and yields with known developer substances 1,4-diaminobenzene and 2,5-diaminobenzylalcohol to stable blue tones without any red fraction. Moreover, the new compounds lead to exceptional black tones and ash tones.