| 摘要 |
<p>A mixture of cationic compounds of the formulae <IMAGE> III <IMAGE> IIIa <IMAGE> IIIb is obtained by reaction of a compound of the formula <IMAGE> (I) with an aldehyde of the formula II <IMAGE> (II) in an aqueous or organic medium, in the presence of an acid, in which formulae, the symbols have the meanings defined in claim 1. The mixtures obtained are suitable in particular for the dyeing of paper, whereby neutral-yellow dyeings are obtained.</p> |
