Agent for dyeing keratin-based fibers

US7393367B2 · kind B2 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Wibke Gross · Mülheim an der Ruhr, DE
• Horst Hoffkes · Mülheim an der Ruhr, DE
• Doris Oberkobusch · Goldkronach, DE
• Helmut Muller · Bensberg, DE
• Carsten Brake · Neheim, DE

Key dates

• Filing date: Nov 8, 2007
• Grant date: Jul 1, 2008
• Expiry date: Nov 8, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q5/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

An agent for dyeing keratin-containing fibers, especially human hair, is comprised of a cosmetic carrier, and wherein each of R1, R2 and R3 is independently a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C2-C6 alkenyl group, a hydroxyl group, a C1-C6 alkoxy group, a C1-C6 hydroxyalkyl group, a C2-C6 polyhydroxyalkyl group, a hydroxy C1-C6 alkyloxy group, a sulfonyl group, a carboxyl group, a C1-C6 alkoxycarbonyl group, a hydroxy C2-C6 alkyloxycarbonyl group, a sulfonic acid group, a sulfonamido group, a sulfonamide group, a C2-C6 acyl group, a formyl group, a nitro group, a carbamoyl group —C(O)—NR4R5, or a —(CH2)nNR6R7 group wherein each of R4, R5, R6 and R7 is independently a hydrogen atom, a C1-C6 alkyl group or a C2-C6 hydroxyalkyl group; and n is number from 0 to 6, wherein R1 and R2 can form a 5- or 6-membered aromatic or heteroaromatic ring; and (B) at least one CH-acidic compound.