Substituted 2,6-diaminotoluenes, processes for their preparation and coloring agents for keratinic fibers comprising these compounds

US5230710A · kind A · utility

Assignee

• Hans Schwarzkopf GmbH · DE

Inventors

• Mustafa Akram
• Winfried Seidel · Obertshausen, DE
• Wolfgang Schlenther · Hamburg, DE

Key dates

• Filing date: Sep 30, 1992
• Grant date: Jul 27, 1993
• Expiry date: Sep 30, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C215/16
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

New substituted 2,6-diaminotoluenes of the general formula I ##STR1## wherein R is a hydrogen atom and R.sup.1 is a radical of the formula Ia EQU --CH.sub.2 --CH(A)--B (Ia) or R and R.sup.1 are independent from each other and are represented by the formula Ia and if A in formula Ia represents a hydrogen atom, B is a hydroxyl group or HO--CH.sub.2 -- group; if A denotes a methyl group, B is a hydroxyl group; with the proviso that formula I is not N-(2-hydroxyethyl)-2,6-toluylenediamine; processes for their preparation and coloring compositions for keratin fibers which contain them. The dyeings produced with the coloring compositions are stable, bright and intense in color. They have improved properties with respect to attack by perspiration, acid rain, detergents, sunlight, UV radiation, seawater and the like.