The invention concerns novel di-benzene compounds comprising at least one cationic group Z, Z being selected among quatemized aliphatic chains, aliphatic chains comprising at least a quatemized saturated cycle, and aliphatic chains comprising at least a quaternized unsaturated cycle, their use as coupling agents in oxidation dyeing of keratinous fibres, dyeing compositions containing same and oxidation dyeing methods using same.
                            本发明涉及新型二苯化合物,其中至少包含一个阳离子基团Z,Z被选自季
铵化的脂肪链、至少包含一个季
铵化饱和环的脂肪链和至少包含一个季
铵化不饱和环的脂肪链,它们作为角蛋白纤维氧化染色的
偶联剂的用途,包含它们的
染料组合物以及使用它们的氧化染色方法。