| abstract |
Colorants for keratinic fibers, which allow colorations in brilliant shades and whose colorations are distinguished by high fastness to washing, light, rubbing and perspiration, contain at least one acrylic acid derivative of the formula (I): in the X stands for = O or = NR 1 Y is an arbitrarily functionalized alkyl radical Z stands for any coloring structural unit R, R ', R ", R 1 independently of one another represent a hydrogen atom, an optionally substituted aryl group or an optionally substituted (C 1 -C 6 ) -alkyl group or a hydroxyalkyl group or a polyhydroxyalkyl group or an optionally substituted (C 2 -C 6 ) -alkylene group, or a (C 1 - C 6 ) acyl, preferably -H, -CH 3 , -CH 2 CH 3 , - (CH 2 ) 2 CH 2 , -CH (CH 3 ) 2 , - (CH 2 ) 3 CH 3 , -CH (CH 3 ) CH 2 CH 3 , -CH 2 CH (CH 3 ) 2 , -C (CH 3 ) 3 . |