The present invention provides an aqueous ink composition comprising:
(a) at least one N,N,N',N'-tetrakis-(2-hydroxyalkyl)-ethylenediamine represented by the formula
wherein Ri, R2, R3 and R4 each represent a group of the formula
and mav be the same, or at least one of these groups may be different from the others, n being zero or an integer of 1 to 3,
(b) a dye,
(c) a hygroscopic water-soluble organic solvent, and
(d) water.
The aqueous ink composition of the invention is used for fountain pens, porous point pens, roller pens or like writing implements, and has an improved storage stability, continuous writability and solution stability.
本发明提供了一种
水性油墨组合物,其中包括
(a) 至少一种由式表示的 N,N,N',N'-四-(2-羟基烷基)-
乙二胺
其中 Ri、R2、R3 和 R4 各代表一个式中的基团
其中 n 为零或 1 至 3 的整数、
(b)
染料
(c) 吸湿性
水溶性有机溶剂,和
(d)
水。
本发明的
水性墨
水组合物可用于钢笔、多孔点钢笔、圆珠笔或类似书写工具,并具有更好的储存稳定性、连续书写性和溶液稳定性。