| 摘要 |
<p>PURPOSE: To obtain an ink, having excellent color developing properties and image quality for a cellulosic fibrous structure and excellent in preservation stability and discharge stability without any problems in clogging of ink heads by selecting specific reactive dyes. CONSTITUTION: This ink comprises reactive dyes, water and, as necessary, an organic solvent. Furthermore, the ink uses a monoazo dye mixture comprising (A) 1-99wt.% monoazo dye of formula I (Q1 is a group eliminative by actions of an alkali) in the form of a free acid with (B) 0-98% monoazo dye of formula II (Q2 is a group eliminative by actions of an alkali) in the form of a free acid and (C) 1-20wt.% monoazo dye of formula III in the form of a free acid as the dyes. Furthermore, (D) a formaldehyde condensate of naphthalenesulfonic acid which may be alkylated (especially the one having one to three 1-4C alkyl groups, 50-150% degree of sulfonation and 1.1-3.0 average degree of condensation) is preferably contained in an amount of 1-100 pts.wt. based on 100 pts.wt. mixture.</p> |
