| 摘要 |
Oligomeric methine dye compounds or their mixtures obtainable by a diamine being reacted in a first step with at least 2.5 equivalents of a compound containing two leaving groups or groups capable of N-alkylation, in a second reaction step with an aromatic N-containing heterocyclic compound or a nucleophilic compound or a mixture thereof, in a third reaction step with an aldehyde and finally admixed in a fourth reaction step with an inorganic or organic acid, a storage-stable formulation thereof, their use for dyeing organic substrates and substances dyed with such dyes.
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