2-alkyl sulfonyl-1,4-diaminobenzenes, processes for their production and oxidation hair dyeing compositions containing the same

US4754069A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Hans-Jurgen Braun · Frielendorf, DE
• Eugen Konrad · Darmstadt, DE
• Herbert Mager · Freiberg, DE

Key dates

• Filing date: Dec 12, 1985
• Grant date: Jun 28, 1988
• Expiry date: Dec 12, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C317/28
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Novel 2-alkyl sulfonyl ethyl-1,4-diaminobenzenes of formula 1 ##STR1## wherein R denotes CH.sub.3 or C.sub.2 H.sub.5 and the salts thereof, a process for making the compositions of formula I as well as compositions for the oxidative dyeing of human hair upon the basis of a developing substance-coupler substance-combination with a content of a composition of formula I as developing substance. The well water soluble developing substances of the formula I result in very natural appearing blond to brown color shades in combination with the coupler substances resorcinol, 4-chororesorcinol,4,6-dichlororesorcinol, 4-hydroxy-1,2-methylenedioxybenzene and 4-amino-1,2-methylenedioxybenzene.