申请人:L'Oreal
公开号:US04960432A1
公开(公告)日:1990-10-02
New meta-phenylenediamines, process for preparation thereof, intermediate compounds and use of these metaphenylenediamines as couplers for the oxidation dyeing of keratinous fibres and especially human hair. The invention relates to the compounds of the formula: ##STR1## in which R.sub.1 and R.sub.2 denote, independently of one another, a hydrogen atom, a C.sub.1 -C.sub.4 alkyl radical or a C.sub.2 -C.sub.3 mono- or polyhydroxyalkyl radical, Z and Z' denote, independently of one another, a C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.4 hydroxyalkyl radical, with the proviso that, when R.sub.1 and R.sub.2 simultaneously denote a hydrogen atom, Z and Z' do not simultaneously denote a methyl radical, and to their addition salts with an acid, to a process for preparation thereof and also to their use, by way of couplers, in an aqueous vehicle, in combination with at least one oxidation dye percursor of the para type, for the dyeing of human hair. The invention also relates to the intermediate compounds of the formula: ##STR2## in which R' denotes a hydrogen atom, a C.sub.1 -C.sub.4 alkyl radical, a C.sub.2 or C.sub.3 mono- or polyhydroxyalkyl radical, or an acetyl or .beta.-chloethoxycarbonyl radical, and z and z' denote, independently of one another, a C.sub.1 -C.sub.4 alkyl radical.
新的间苯二胺衍生物,其制备方法,中间体化合物及其作为角蛋白纤维氧化染色的偶联剂,特别是人类头发的染色中的应用。该发明涉及以下式的化合物:##STR1## 其中R.sub.1和R.sub.2分别表示氢原子,C.sub.1-C.sub.4烷基基团或C.sub.2-C.sub.3单醇基或多醇基烷基基团,Z和Z'分别表示C.sub.1-C.sub.4烷基或C.sub.2-C.sub.4羟基烷基基团,但R.sub.1和R.sub.2同时表示氢原子时,Z和Z'不能同时表示甲基基团,以及它们与酸的加成盐,其制备方法以及它们在水性载体中作为偶联剂的使用,与至少一种对位型氧化染料前体结合,用于人类头发的染色。该发明还涉及以下式的中间体化合物:##STR2## 其中R'表示氢原子,C.sub.1-C.sub.4烷基基团,C.sub.2或C.sub.3单醇基或多醇基烷基基团,或乙酰基或β-氯乙氧羰基基团,z和z'分别表示C.sub.1-C.sub.4烷基基团。