Pyrazole azomethines and colorants containing these compounds
申请人:Gottel Otto
公开号:US20070033742A1
公开(公告)日:2007-02-15
The object of the present invention is new pyrazole azomethines of Formula (I), (Ia), or (Ib),
as well as agents containing these compounds for oxidative coloring of keratin fibers.