| 摘要 |
<p>The present invention relates to agents for colouring keratin fibres which comprise at least one zwitterionic azomethine dye of the general formula (I), (II) or (III) in which z is a heterocycle of the formula (IV), (V), (VI), (VII), (VIII), (IX), (X), (XI), (XII) in which R8 is an alkyl sulfonate radical of the formula (XIII);.</p> |
