申请人:——
公开号:US04857070A1
公开(公告)日:1989-08-15
The invention relates to new 2,4-diaminophenyl tetrahydrofurfuryl ethers of the general formula VIII and to their salts with inorganic or organic acids ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4, independently of one another, each represent a hydrogen atom, a (C.sub.1 -C.sub.4)alkyl group, hydroxy(C.sub.2 -C.sub.4)alkyl group, dihydroxy(C.sub.3 -C.sub.4)alkyl group, halogeno(C.sub.2 -C.sub.4)alkyl group, amino(C.sub.2 -C.sub.4)alkyl group or an amino(C.sub.2 -C.sub.4)alkyl group which is substituted once or twice by methyl, ethyl or hydroxyethyl radicals on the nitrogen, the carbon chain having a straight or branched arrangement, and it being a proviso that at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents a hydrogen atom, to processes for their preparation, and to aqueous tinting compositions for keratin fibres such as fur and human hair, containing at least one coupler and at least one developing component together with customary additives and auxiliaries, the coupler corresponding to the general formula VIII or to the acid salts of these compounds.
本发明涉及一种新的2,4-二氨基苯基四氢呋喃醚,其一般式为VIII,以及它们与无机或有机酸的盐,其中R1、R2、R3和R4独立地表示氢原子、(C1-C4)烷基、羟基(C2-C4)烷基、二羟基(C3-C4)烷基、卤代(C2-C4)烷基、氨基(C2-C4)烷基或氨基(C2-C4)烷基,该氨基(C2-C4)烷基在氮上被甲基、乙基或羟乙基基团取代一次或两次,碳链具有直链或支链排列,前提是R1、R2、R3和R4中至少有一个表示氢原子,以及其制备方法和含有至少一种偶合剂和至少一种显色组分以及通常的添加剂和助剂的角蛋白纤维如毛皮和人发的水性染色组合物,其中偶合剂对应于一般式VIII或这些化合物的酸盐。