2, 5-diaminobenzonitrile compounds and oxidation hair dye compositions containing same

US5865856A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Helmut Keller · Eningen unter Achalm, DE
• Wolfgang Balzer · Alsbach, DE

Key dates

• Filing date: Mar 17, 1997
• Grant date: Feb 2, 1999
• Expiry date: Mar 17, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C255/58
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The oxidation hair dye composition is based on a combination of coupler substance and developer substance, and includes, as developer substance, at least one 2,5-diaminobenzonitrile compound of the formula (I), ##STR1## in which R.sup.1 and R.sup.2, independently of each other, are selected from the group consisting of H, alkyl groups having 1 to 6 carbon atoms, hydroxyalkyl groups having 2 to 4 carbon atoms and dihydroxyalkyl groups having 3 to 4 carbon atoms, with the proviso that both of the R.sup.1 and R.sup.2 groups are not both hydrogen at the same time, or a physiologically compatible water-soluble salt thereof. The invention also includes new 2,5-diaminobenzonitrile compounds of formula I.