Method for dyeing keratinous fibres using an aminoindole in comb

Details Method for dyeing keratinous fibres using an aminoindole in comb Method for dyeing keratinous fibres using an aminoindole in comb

1991-05-29

1993-01-19

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

8406, 8407, 8408, 8423, 8429, 552293, A61K 713

Patent

active

051804000

ABSTRACT:
Method for dyeing keratinous fibres, characterized in that at least one composition (A) containing at least one aminoindole in a medium appropriate for dyeing is applied to these fibres, the application of the composition (A) being preceded or followed by the application of a composition (B) containing, in a medium appropriate for dyeing, at least one quinone derivative chosen from ortho- or para-benzoquinones, ortho- or para-benzoquinone monoimines or diimines, 1,2- or 1,4-naphthoquinones, ortho- or para-benzoquinone sulphonimides, .alpha.,.omega.-alkylene-bis-1,4-benzoquinones, or 1,2- or 1,4-naphthoquinone monoimines or diimines, the aminoindoles and the quinone derivatives being chosen such that the difference in redox potential .DELTA.E between the redox potential E.sub.i of the aminoindoles, determined at pH 7 in a phosphate medium on a vitreous carbon electrode by voltametry, and the redox potential E.sub.q of the quinone derivative, determined at pH 7 in a phosphate medium by polarography on a mercury electrode relative to the saturated calomel electrode, in such that

REFERENCES:
patent: 4888025 (1989-12-01), Bugaut et al.
patent: 5053053 (1991-10-01), De Labbey et al.

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