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Dyeing compositions for keratin fibres, based on 3-nitro-ortho- phenylenediamines, and certain 3-nitro-ortho-phenylenediamines used therein
Dyeing compositions for keratin fibres, based on 3-nitro-ortho- phenylenediamines, and certain 3-nitro-ortho-phenylenediamines used therein
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机译:基于3-硝基-邻苯二胺和其中使用的某些3-硝基-邻苯二胺的角蛋白纤维的染色组合物
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摘要
The invention provides dyeing compositions for keratin fibres, which contain at least one dyestuff corresponding to the formula: ##STR1## in which R.sub.1 and R.sub.2 independently of one another denote a hydrogen atom, an alkyl group, a monohydroxyalkyl or polyhydroxyalkyl group, an alkyl group substituted by an alkoxy group, or an aminoalkyl group of which the amino group can optionally be monosubstituted or disubstituted by an alkyl group, and the radical R.sub.2 can also denote a phenyl group or a phenyl group substituted by an alkyl, hydroxyl or amino group, and Z denotes a hydrogen atom or an alkyl group, or their cosmetically acceptable salts. Many of the dyestuffs are novel.
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