Patent · US Expired

Composition for dyeing keratinous fibers comprising at least one azodiazine direct dye aminated at the 7-position and process for dyeing

US7175672B2 · kind B2 · utility

0Cited by

2References

34Claims

0Family size

Assignee

L'Oreal · FR

Inventors

Alain Lagrange · Coupvray, FR
Frederic Guerin · Paris, FR
Sylvain Kravtchenko · Shanghai, CN

Key dates

Filing date	Jul 30, 2004
Grant date	Feb 13, 2007
Priority date	—
Expiry date	Aug 12, 2025

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B56/00
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present disclosure relates to a composition for dyeing keratinous fibers, comprising at least one azodiazine direct dye aminated at the 7-position. The present disclosure also relates to a process for dyeing keratinous fibers using the direct dyes described herein.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.