申请人:L'Oreal
公开号:US05180400A1
公开(公告)日:1993-01-19
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 .DELTA.E=E.sub.i -E.sub.q .ltoreq.470 mV.
将角蛋白纤维染色的方法,其特征在于至少将至少一种含有至少一种氨基吲哚的组合物(A)应用于适合染色的介质中,然后将该组合物(A)的应用前或后跟随着含有至少一种醌衍生物的组合物(B)的应用,该醌衍生物选择自邻苯醌或对苯醌、邻苯醌或对苯醌单亚胺或二亚胺、1,2-或1,4-萘醌、邻苯醌磺酰亚胺、α,ω-烷基-双1,4-苯醌,或1,2-或1,4-萘醌单亚胺或二亚胺,所选择的氨基吲哚和醌衍生物使得在磷酸盐介质中以伏安法在玻碳电极上测定的pH 7下的氨基吲哚的氧化还原电位E.sub.i和在磷酸盐介质中通过极谱法在pH 7下相对于饱和氯化汞电极测定的醌衍生物的氧化还原电位E.sub.q之间的差值ΔE,即ΔE=E.sub.i -E.sub.q ≤ 470毫伏。