Yellow ink-jet printing ink, e.g. useful for printing photographs, contains quinophthalone dye based on 2-(3-hydroxy-7-carboxy- or -7-sulfo-indan-1-on-2-yl)-6-(6-methyl-7-sulfo-benzothiazol-2-yl)-quinoline

摘要

Ink-jet printing ink contains, as yellow dye, a quinophthalone derivative, the free acid form of which is 2-(3-hydroxy-7-carboxy- or -7-sulfo-indan-1-on-2-yl)-6-(6-methyl-7-sulfo-benzothiazol-2-yl)-quino line (I). Ink-jet printing ink contains, as yellow dye, a quinophthalone derivative, the free acid form of which is 2-(3-hydroxy-7-carboxy- or -7-sulfo-indan-1-on-2-yl)-6-(6-methyl-7-sulfo-benzothiazol-2-yl)-quino line of formula (I): X = COOH or SO3H .