申请人:L'Oreal
公开号:US05053053A1
公开(公告)日:1991-10-01
Process for dyeing keratinous fibres, comprising the step of applying to these fibres at least one composition A containing, in a medium appropriate for dyeing, at least one mono- or di-hydroxyindole 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, monoimines or diimines of ortho- or para-benzoquinones, 1,2- or 1,4-naphthoquinones, sulphonimides of ortho- or para-benzoquinones, .alpha., .omega.-alkylene-bis-1,4-benzoquinones, or 1,2- or 1,4-naphthoquinone-monoimines or -diimines; the mono- or di-hydroxyindoles and the quinone derivatives being chosen such that the oxidation-reduction potential difference .DELTA.E between the oxidation-reduction potential E.sub.i of the mono- or di-hydroxyindoles, determined at pH 7 in a phosphate medium on a vitreous carbon electrode by voltametry, and the oxidation-reduction potential E.sub.q of the quinone derivative determined at pH 7 in a phosphate medium by polarography on a mercury electrode and relative to a saturated calomel electrode is such that .DELTA.E=E.sub.i -E.sub.q .ltoreq.320 mV.
染色角蛋白纤维的过程,包括将至少一种含有至少一种单或双羟基吲哚的组合物A应用于这些纤维的步骤,所述组合物A在适合染色的介质中,应用组合物A之前或之后应用至少一种含有至少一种奎尼酮衍生物的组合物B,所述奎尼酮衍生物从邻苯醌或对苯醌,邻苯醌或对苯醌的单亚胺或双亚胺,1,2-或1,4-萘醌,邻苯醌或对苯醌的磺酰亚胺,α,ω-烷基-1,4-苯醌,或1,2-或1,4-萘醌-单亚胺或-双亚胺中选择;所述单或双羟基吲哚和奎尼酮衍生物的选择使氧化还原电位差ΔE介于单或双羟基吲哚的氧化还原电位Ei和在磷酸盐介质中在pH 7下通过极谱法在汞电极上测定的奎尼酮衍生物的氧化还原电位Eq之间,并相对于饱和甘汞电极,即ΔE = Ei-Eq ≤ 320 mV。