Patent · US Expired

Cationic ortho-phenylenediamines, their use for the oxidation dyeing of keratin fibers, dye compositions and dyeing processes

US6340371B1 · kind B1 · utility

17Cited by

14References

31Claims

0Family size

Assignee

L'Oreal S.A. · FR

Inventors

Alain Genet · Aulnay-sous-Bois, FR
Alain Lagrange · Coupvray, FR

Key dates

Filing date	Sep 1, 1999
Grant date	Jan 22, 2002
Priority date	—
Expiry date	Sep 1, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D249/08
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Monobenzenic ortho-phenylenediamines comprising at least one cationic group Z, Z being chosen from aliphatic chains, comprising at least one quaternized unsaturated ring, to their use for the oxidation dyeing of keratin fibers, to dye compositions containing them and to oxidation dyeing processes using them.

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