Enlightning dyeing composition for keratinic fibres...

A - Human Necessities – 61 – K

Patent

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A61K 8/49 (2006.01) A61Q 5/06 (2006.01)

Patent

CA 2210328

The invention relates to an enlightning dyeing composition for ke0atinic fibres, particularly for human keratinic fibres such as hair, of the type comprising, in an appropriate medium for the dye, at least one direct colorant to be extemporaneously mixed at a basic pH with an oxidizing agent, and characterized in that it has a basic pH and contains as a direct dyeing agent, at least one dyeing agent which comprises an optionally delocalisable quarternarized nitrogen atom, and a -X=N- bond wherein X is a nitrogen atom or a -CH- radical. It also relates to the use of said composition and the multicompartment dyeing devices for the dyeing of keratinic fibres, particularly hair.

L'invention concerne une composition de teinture éclaircissante pour fibres kératiniques, en particulier pour fibres kératiniques humaines telles que les cheveux, du type comprenant, dans un milieu approprié pour la teinture, au moins un colorant direct à mélanger extemporanément à pH basique avec un agent oxydant, et caractérisée par le fait qu'elle présente un pH basique et qu'elle contient, à titre de colorant direct, au moins un colorant comportant un atome d'azote quaternisé éventuellement délocalisable, et une liaison -X=N- dans laquelle X désigne un atome d'azote ou un radical -CH-. Elle concerne également l'utilisation de ladite composition et les dispositifs de teinture à plusieurs compartiments, pour la teinture des fibres kératiniques, notamment les cheveux.

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