Compositions for dyeing keratinous fibres, containing pyrrolo-azoles; use as couplers; method of dyeing
申请人:L'OREAL S.A.
公开号:US20010020309A1
公开(公告)日:2001-09-13
The present invention relates to a composition for the dyeing of keratinous fibres, especially human hair, which comprises, in a medium appropriate for dyeing:
as coupler, at least one compound corresponding to one of the formulae:
1
in which R
1
is especially hydrogen, halogen, aryloxy, alkoxy, acyloxy, arylthio, alkylthio, heteroarylthio, heteroaryloxy, etc;
R
2
and R
3
are independent and are especially hydrogen, halogen, alkyl, aryl, alkylthio, arylthio, benzylthio, etc;
Z
a
, Z
b
and Z
c
are independent and are a nitrogen atom or a carbon atom carrying a radical R
4
, R
5
, R
6
or R
7
;
R
4
, R
6
and R
7
are identical or different and are especially hydrogen, alkyl, aryl, a heterocycle, a halogen, etc; and
R
5
is especially hydrogen, halogen, acyl, acyloxy or carbamoyl, etc;
and at least one oxidation base.
本发明涉及一种用于角质纤维,特别是人类头发染色的组合物,该组合物在适于 染色的介质中包括
作为耦合剂,至少一种与下列式子之一相对应的化合物:
1
其中 R
1
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;
R
2
和 R
3
是独立的,尤其是氢、卤素、烷基、芳基、烷硫基、芳硫基、苄硫基等;
Z
a
, Z
b
和 Z
c
是独立的,并且是一个氮原子或一个碳原子,携带一个自由基 R
4
, R
5
, R
6
或 R
7
;
R
4
, R
6
和 R
7
相同或不同,尤其是氢、烷基、芳基、杂环、卤素等;以及
R
5
尤其是氢、卤素、酰基、酰氧基或氨基甲酰基等;
以及至少一种氧化基。