申请人:Hans Schwarzkopf GmbH
公开号:US04575378A1
公开(公告)日:1986-03-11
The invention relates to new 3-nitro-4-aminophenols of the formula (I) ##STR1## in which R denotes hydrogen or halogen, preferably chlorine or bromine, and R' denotes hydrogen or alkyl, hydroxyalkyl, dihydroxyalkyl or halogenohydroxyalkyl which has 1 to 6 carbon atoms and is straight-chain or branched, with the proviso that, if R is hydrogen, R' does not denote hydrogen, methyl or .beta.-hydroxyethyl. Processes for their preparation: (a) by reacting corresponding 3-nitro-4-aminophenols with certain halogenoalkyl chloroformates and subsequent basic treatment of the process products, or (b) by reacting corresponding 4-halogeno-3-nitrophenols with certain amines, and the intermediate products obtained and coloring agents for keratinic fibres, preferably for human hair, which contain at least one compound of the formula (I).
本发明涉及一种新的具有式(I)的3-硝基-4-氨基苯酚,其中R表示氢或卤素,优选氯或溴,而R'表示氢或烷基,羟基烷基,二羟基烷基或卤代羟基烷基,其具有1至6个碳原子且为直链或分支,但如果R为氢,则R'不表示氢,甲基或β-羟乙基。其制备方法包括:(a)通过反应相应的3-硝基-4-氨基苯酚与某些卤代烷基氯甲酸酯,然后进行碱性处理,或者(b)通过反应相应的4-卤代-3-硝基苯酚与某些胺,以及所得到的中间体和含有至少一种式(I)化合物的角蛋白纤维染料,优选用于人体头发。