Compositions for dyeing keratinous fibres, containing pyrazolo-azoles; their use for dyeing, as couplers; method of dyeing
申请人:L' OREAL S.A.
公开号:US20020007523A1
公开(公告)日:2002-01-24
The present invention relates to a composition for dyeing keratinous fibres, especially human hair, which in a medium appropriate for dyeing comprises:
as coupler at least one compound of formula:
1
in which:
R
1
is especially hydrogen, alkyl, aryl, a heterocycle, a halogen, etc.;
R
2
is especially hydrogen, halogen, aryloxy, alkoxy, acyloxy, arylthio, alkylthio, heteroarylthio, heteroaryloxy, etc.;
Z
a
, Z
b
and Z
c
are independently a nitrogen atom or a carbon which carries a radical R
3
or R
4
whose meanings are identical to those of R
1
; at least one of Z
a
, Z
b
and Z
c
is a nitrogen atom; and R
3
and R
4
may together form an unsubstituted or substituted aromatic ring; and
at least one oxidation base.
本发明涉及一种用于染色角质纤维,特别是人类头发的组合物,该组合物在适于染色的介质中包括
作为耦合剂的至少一种式化合物:
1
其中
R
1
尤其是氢、烷基、芳基、杂环、卤素等;
R
2
尤其是氢、卤素、芳氧基、烷氧基、酰氧基、芳硫基、烷硫基、杂芳硫基、杂芳氧基等;
Z
a
, Z
b
和 Z
c
分别是一个氮原子或一个碳原子,氮原子或碳原子上带有自由基 R
3
或 R
4
的含义与 R
1
;Z
a
, Z
b
和 Z
c
是氮原子;R
3
和 R
4
可共同形成一个未取代或取代的芳香环;以及
至少一种氧化基。