Patent · US Active

Compounds of azomethine type comprising a cationic pyrazolopyridine unit, for dyeing keratin fibres

US7887601B2 · kind B2 · utility

3Cited by

5References

18Claims

0Family size

Assignee

L'Oreal S.A. · FR

Inventors

Aziz Fadli · Chelles, FR
Stéphane Blais · Framingham, US

Key dates

Filing date	Apr 28, 2010
Grant date	Feb 15, 2011
Priority date	—
Expiry date	Apr 28, 2030

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61Q5/10
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Disclosed herein is at least one compound chosen from compounds of leuco type of formula (I), dyes of azomethine type comprising a pyrazolopyridine unit of formula (II) corresponding to the compounds of formula (I), mesomeric forms, isomeric and tautomeric forms thereof, acid-addition salts thereof and solvates thereof:

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