The dyes of formula (1) according to claim
1
and the copper complexes of dyes of formula (2) according to claim
9
or the mixtures of mono-copper complex with the bis-copper complex are excellently suitable for dyeing paper with good light-fastness properties.
根据权利要求1所述的式(1)
染料
1
和权利要求 2 所述式(2)
染料的
铜络合物
9
或单
铜络合物与双
铜络合物的混合物非常适合用于染色纸张,具有良好的耐光性。