This invention relates to a yellow ink composition for ink jet printing comprising a dye represented by Formula I, water and a humectant:
wherein:
R
1
and R
5
independently are hydrogen or a substituted or unsubstituted alkyl, aromatic or heterocyclic group;
R
2
and R
4
independently are hydrogen or a non-metallic substituent;
R
3
is hydrogen or a substituted or unsubstituted alkyl, acyl, sulfonyl, aromatic or heterocyclic group; and X is an electron withdrawing group;
with the proviso at least one of R
1
, R
2
, R
3
, R
4
and R
5
comprises a group capable of imparting water solubility to the dye.
该发明涉及一种用于喷墨打印的黄色墨
水组合物,包括由式I表示的
染料、
水和一种保湿剂:其中:R1和R5独立地是氢或取代或未取代的烷基、芳香基或杂环基;R2和R4独立地是氢或非
金属取代基;R3是氢或取代或未取代的烷基、酰基、磺酰基、芳香基或杂环基;X是电子吸引基团;且至少有R1、R2、R3、R4和R5中的一个包含能够赋予
染料水溶性的基团。