Patent ID: 7101406
Filing Date: 2006-09-05
Classification: A61K,A61Q

Abstract:
1. A dyeing composition for dyeing keratinous fibres comprising, in an appropriate dyeing medium, at least one cationic tertiary para-phenylenediamine comprising a pyrrolidine ring, and a dicationic diazo dye of general formula Vb in which W W in which formulae (C), (D), (E): X″ X″ Z″ Z″ Z″ Z″ the bond a of the 5-membered cationic ring of formula (C) is linked to the azo group of formula (Vb), the bond b of the 6-membered cationic ring of formula (D) is linked to the azo group of formula (Vb) R″ R″ X″ is an organic or mineral anion; and wherein said cationic tertiary paraphenylenediamine containing a pyrrolidine ring corresponds to formula I: in which n varies from 0 to 4, it being understood that when n is greater than or equal to 2, then the radicals R R R R