| 摘要 |
The invention relates to a mehtod of pringing sheet-form substrates bz the inkjet printing process, which method comprises printing those materials with an aqueous ink comprising a) at least one dye of formula (I) wherein R1 and R2 are each independently of the other hydrogen or unsubstituted or substituted C1-C4alkyl, R3 and R4 are each independently of the other unsubstituted or substituted C1-C4alkyl, R5 and R6 are each independently of the other C1-C4alkyl, C1-C4alkoxy, halogen, hydroxy, carboxy, C2-C4alkanoylamino or sulfo, X is halogen, hyrodroxy, C1-C4alkoxy that is unsubstituted or substituted in the alkyl moiety, phenoxy that is unsubstituted or substituted in the phenyl ring, C1-C4alkylthio that is unsubstituted or substituted in the alkyl moiety, phenylthio that is unsubstituted or substituted in teh phenyl ring, amino, N-mono-, or N, N-di-C1-C6alkylamino that is unsubstituted or substituted in the alkyl moiety and uninterrupted or interrupted in the alkyl moiety by oxygen, C5-C7cycloaklylamino that is unsubstituted or substituted in the cycloalkyl ring, phenyl- or naphthyl-amino that is unsubstituted or substituted in the aryl moiety, N-C1-C4alkyl-N-phenyl- or N-C1-C4alkyl-N-naphthyl-amino that is unsubstituted or substituted in the aryl moiety, benzylamino that is unsubstituted or substituted in the phenyl moiety, morpholino or piperidin-1-yl, and n and m are each independently of the other the number 0, 1, 2 or 3; and b) a solubiliser or a humectant.
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