申请人:NIPPON KAYAKU KABUSHIKI KAISHA
公开号:EP1693422A1
公开(公告)日:2006-08-23
[PROBLEMS]
To provide: a black compound which is for use in ink-jet recording or writing utensils, is excellent in ozone resistance, light resistance, moisture resistance, and color rendering, and gives a recording fluid having satisfactory storage stability; and an ink composition containing the compound.
[MEANS FOR SOLVING PROBLEMS]
The black compound is a triazo compound represented by the following formula (1)
or a salt thereof. (1) [In the formula (1), R1 and R2 each independently represents hydrogen, carboxy, sulfo, hydroxy, a C1-4alkyl, G1-4alkoxy, or sulfo group optionally substituted by C1-4alkoxy, an optionally carboxylated C1-4-alkoxy group, etc.; and A represents phenyl or naphthyl (provided that the phenyl and naphthyl groups may be substituted by halogeno, carboxy, sulfo, sulfamonyl optionally substituted by alkyl or phenyl, nitro, etc.).]
问题
提供:一种黑色化合物,用于喷墨记录或书写用具,具有优异的耐臭氧性、耐光性、耐湿性和显色性,并提供一种具有令人满意的储存稳定性的记录液;以及一种含有该化合物的墨水组合物。
[解决问题的方法]
黑色化合物是由下式(1)表示的三唑化合物
或其盐。(1) [在式 (1) 中,R1 和 R2 各自独立地代表氢、羧基、磺基、羟基、任选被 C1-4 烷氧基取代的 C1-4 烷基、G1-4 烷氧基或磺基、任选被羧基取代的 C1-4 烷氧基等;A 代表苯基或萘基(条件是苯基和萘基可以被卤素、羧基、磺基、任选被烷基或苯基取代的磺酰胺基、硝基等取代)。