发明授权
EP1357889B1 NOVELS COUPLERS FOR USE IN OXIDATIVE HAIR DYEING 有权
新的耦合剂氧化型染发剂

NOVELS COUPLERS FOR USE IN OXIDATIVE HAIR DYEING
摘要:
Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): wherein Y is CH or N and Z is H, OCH3, NH2 and alkyl of from 1 to 4 carbon atoms, with the proviso that when Y is N the 2,4-diaminophenoxy moieties are positioned at the 4 and 6 positions on the pyrimidine ring.
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