| 摘要 |
<p>The present invention relates to a method of colouring keratin-containing fibres comprising applying at least one diazonium compound of formula Ia or Ib, wherein R1 to R5 are each independently of the others C1-C12alkyl, C5-C14aryl, C5-C8cycloalkyl, C6-C20aralkyl, C1-C12alkoxy or C1-C12alkylthio unsubstituted or substituted by one or more halogen atoms, nitro, cyano or alkoxy groups; or hydrogen, halogen, hydroxy, nitro, COOH, SO3H, CN, SCN, C1-C4alkylsulfonyl, phenylsulfonyl, benzylsulfonyl, di-C1-C4alkylaminosulfonyl, C1-C4alkylcarbonylamino, C1-C4alkoxysulfonyl or dihydroxy-C1-C4alkylaminosulfonyl, and X- is 0-, COO- or SO3-, and at least one coupling component, preferably a a water-soluble to the material to be coloured and causing them to react at a pH in the range of 8 to 12.</p> |
