Dye composition comprising a thiol / disulfide fluorescent dye with ortho-pyridinium group interrupted alkylene chain and internal cationic charge clearance process keratinous substances from this dye

摘要

Fluorescent dye of formula (I) or (II): salts of organic or mineral acid, optical isomers, geometric isomers, and solvates, such as hydrates; formula (I) and (II) in which: ➢ G and G ', identical or different, represent a group -NRcRd or C1-C6 optionally substituted; ➢ Rc and Rd, identical or different, represent a hydrogen atom, an aryl-alkyl (C1-C4) alkyl group or a (C1-C6) optionally substituted; ➢ R g, R 'g, R "g, R"' g, R h, R 'h, R "h and R"' h, identical or different, represent a hydrogen atom, halogen, amino, (di) -alkyl (C1-C4) alkylamino, cyano, carboxy, hydroxy, trifluoromethyl, acylamino, C1-C4 (poly) hydroxyalkoxy C2-C4, alkyl (C1-C4) alkylcarbonyloxy-alkoxy (C1-C4) alkoxycarbonyl, (C1-C4) carbonyl-amino, acylamino, carbamoyl, (C1-C4) alkylsulfonylamino, aminosulfonyl radical, or an alkyl (C1-C16) optionally substituted by a group selected from alkoxy ( C1-C12), hydroxy, cyano, carboxy, amino, (di) (C1-C4) amino, or the two alkyl radicals borne by the nitrogen atom of the amino group form a heterocycle comprising from 5 to 7 members and optionally comprising another heteroatom identical to or different from that of the nitrogen atom; ➢ R 'i, R "i, R'" i and R "" i, identical or different, represent a hydrogen atom or an alkyl group (C1-C4); ➢ Ta and Tb, identical or different, represent: - either an ammonium radical -N + (R) (R °) - identical or different, with R and R °, representing a hydrogen atom, an alkyl radical of C1-C4 , C1-C4 hydroxyalkyl or an aryl- (C1-C4); - or a preferably monocyclic heterocycloalkyl or heteroaryl radical, cationic, containing in particular two heteroatoms, particularly two nitrogen atoms, and comprising in particular from 5 to 7 members, such as imidazolium, pyridinium or pyrrolidinium optionally substituted with a group (C1-C4) such as methyl; ➢ m, m ', n and n', identical or different, represent an integer between 0 and 6 inclusive, with m + n, m '+ n' representing an integer between 1 and 10 inclusive; ➢ M ', identical or different, represent an anionic counterion; and ➢ Y represents: i) a hydrogen atom; ii) an alkali metal; iii) an alkaline earth metal; iv) an ammonium group: N + RαRβRγRδ or a phosphonium group: P + RαRβRγRδ with Rα, Rβ, Rγ and Rδ, identical or different, represent a hydrogen atom 30 or an alkyl group (C1-C4); ov) a protecting group of the thiol function; understood that when the compound of formula (I) or (II) contains other cationic parts, it is associated with one or more anionic counterions allowing to achieve electroneutrality formula (I) or (II).