Novel 6-alkoxy-2,3-diaminopyridine couplers in which the...

Details Novel 6-alkoxy-2,3-diaminopyridine couplers in which the... Novel 6-alkoxy-2,3-diaminopyridine couplers in which the...

A - Human Necessities

61

K

A61K 8/49 (2006.01) A61Q 5/10 (2006.01) C07D 213/73 (2006.01) C07D 213/74 (2006.01)

Patent

CA 2494856

The invention relates to a dyeing composition which can be used to dye keratinous fibres and which contains at least one oxidation base and at least one 6-alkoxy-2,3-diaminopyridine-type coupler in which the position 2 amino radical is a disubstituted radical. The invention also relates to the use of the inventive composition for the dyeing of keratinous fibres and to the dyeing method which employs said composition. The invention further relates to novel 6-alkoxy-2,3-diaminopyridine compounds which are used as couplers.

L'invention a pour objet une composition tinctoriale utile pour la teinture des fibres kératiniques contenant au moins une base d'oxydation et au moins un coupleur du type 6-alcoxy-2,3-diaminopyridine dont le radical amino en position 2 est un radical amino disubstitué, l'utilisation de cette composition pour la teinture des fibres kératiniques ainsi que le procédé de teinture mettant en oeuvre cette composition. L'invention a aussi pour objet de nouveaux composés 6-alcoxy-2,3-~diaminopyridines utiles comme coupleurs.

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