Compositions for dyeing keratinous fibers comprising pyrazoloazoles; their use in dyeing as oxidation base and dyeing process; and novel pyrazoloazoles
申请人:L'Oreal
公开号:US20020152558A1
公开(公告)日:2002-10-24
A composition for dyeing keratinous fibers, in particular human keratinous fibers, such as human hair, containing, in a medium suitable for dyeing:
as oxidation base, at least one compound of formula (I) below:
1
in which:
R
1
is a hydrogen atom, an alkyl radical, an aryl radical, a heterocycle radical, or a halogen atom,
R
2
is a hydrogen atom, an alkyl radical, a hydroxyalkyl radical, or an aminoalkyl radical,
Z
a
, Z
b
and Z
c
are independently a nitrogen atom or a carbon carrying an R
3
or R
4
radical with meanings identical to those of R
1
; wherein at least one of Z
a
, Z
b
and Z
c
is a nitrogen atom; it being possible for R
3
and R
4
to form between themselves a substituted or unsubstituted aromatic ring.
一种用于染色角质纤维,特别是人的角质纤维,如人的头发的组合物,在适于染色的介质中含有
至少一种下式(I)化合物作为氧化基:
1
其中
R
1
是氢原子、烷基、芳基、杂环基或卤素原子、
R
2
是氢原子、烷基、羟烷基或氨基烷基、
Z
a
, Z
b
和 Z
c
分别是一个氮原子或一个携带 R
3
或 R
4
基团的碳,其含义与 R
1
其中至少一个 Z
a
, Z
b
和 Z
c
是氮原子;R
3
和 R
4
之间可以形成一个取代或未取代的芳香环。