Patent · US Expired

2,5-diaminopyridine oxidation bases for the dyeing of keratin fibres

US6837908B2 · kind B2 · utility

4Cited by

10References

29Claims

0Family size

Assignee

L'Oreal S.A. · FR

Inventors

Laurent Vidal · Paris, FR
Aziz Fadli · Chelles, FR

Key dates

Filing date	Nov 14, 2002
Grant date	Jan 4, 2005
Priority date	—
Expiry date	Jun 27, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D401/04
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Dyeing compositions for the dyeing of keratin fibers comprising at least one oxidation base chosen from formula (I), as defined herein and addition salts thereof. The use of the compositions for the dyeing of keratin fibers. Dyeing processes employing the compositions. Novel 2,5-diaminopyridine compounds and addition salts thereof and their use as oxidation bases.

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