| 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 a specific reactive dye. CONSTITUTION: This ink comprises a reactive dye, water and, as necessary, an organic solvent. Furthermore, the ink contains (A) a copper phthalocyanine dye of formula I CuPC is a copper phthalocyanine residue; (l) is 0.5-3.5; (m) is 0-3.0; (n) is 0.5-3.5, with the proviso that [(l)+(m)+(n)] is <=4; Q1 is a group eliminative by actions of an alkali} in the form of a free acid or preferably a mixed dye of (A) 80-99wt.% copper phthalocyanine dye of formula I with (R) 1-20wt.% copper phthalocyanine dye of formula II in the form of a free acid as the dye and further (C) a formaldehyde condensate of naphthalenesulfonic acid which may be alkylated in an amount of 1-100 pts.wt. based on 100 pts.wt. component (A) or mixed dye. A copper phthalocyanine dye of formula III, etc., in the form of a free acid are preferably used as the dye.</p> |
