申请人:Henkel Kommanditgesellschaft auf Aktien
公开号:US05089025A1
公开(公告)日:1992-02-18
The invention relates to the use of compounds corresponding to formula (I) ##STR1## in which one of the substituents R.sup.1 or R.sup.2 is a nitro group while the other is hydrogen, halogen, an amino group, a mono- or dialkylamino group containing C.sub.1-4 alkyl groups, a C.sub.1-4 alkyl or alkoxy group, R.sup.3 and R.sup.4 independently of one another represent hydrogen or a C.sub.1-4 alkyl group, A is a >CHR.sup.6 - or a >C.dbd.O- group, where R.sup.6 is hydrogen or a C.sub.1-4 alkyl group, and R.sup.5 is hydrogen or a C.sub.1-4 alkyl group, or salts thereof as substantive dyes in hair-dyeing compositions. When the substituent groups in formula I represent one of the combinations I-IV shown in the table below, the compounds are novel and are useful in hair-dyeing compositions. ______________________________________ R.sup.1 R.sup.2 R.sup.3 R.sup.4 R.sup.5 A ______________________________________ I: H NO.sub.2 H CH.sub.3 H CH.sub.2 II: H NO.sub.2 CH.sub.3 CH.sub.3 H CH.sub.2 III: NH.sub.2 NO.sub.2 H H H CH.sub.2 IV: H NO.sub.2 H H CH.sub.3 CH.sub.2. ______________________________________
本发明涉及使用式(I)所示的化合物,其中R1或R2中的一个取代基是硝基,而另一个取代基是氢、卤素、氨基、含有C1-4烷基的单烷基或二烷基氨基、C1-4烷基或烷氧基,R3和R4分别独立地表示氢或C1-4烷基,A是>CHR6-或>Cdbd.O-基团,其中R6是氢或C1-4烷基,R5是氢或C1-4烷基,或其盐作为染发组合物中的实质性染料。当式I中的取代基组合表示如下表所示的I-IV中的一种时,这些化合物是新的,并且在染发组合物中有用。
R1 R2 R3 R4 R5 A
I: H NO2 H CH3 H CH2
II: H NO2 CH3 CH3 H CH2
III: NH2 NO2 H H H CH2
IV: H NO2 H H CH3 CH2.