METAL CHELATE AZO DYE FOR INK-JET RECORDING, INK-JET RECORDING FLUID CONTAINING THE SAME, AND METHOD OF INK-JET RECORDING
申请人:MITSUBISHI CHEMICAL CORPORATION
公开号:EP1260556A1
公开(公告)日:2002-11-27
The present invention provides a black dyestuff for inkjet recording which exhibits a good achromaticity as well as a good light-resistance and a recording liquid containing the black dyestuff.
In other words, the recording liquid for inkjet contains a metal chelated azo dyestuff the free acid group of which is represented by the following general formula (1) and optionally other water soluble dyestuffs:
(wherein the general formula (1) represents a compound having at least one or more hydrophilic group per molecule; M represents an arbitrary metal; A, B and C each independently represents an aromatic ring which may have arbitrary substituents; D represents an aromatic ring which may have arbitrary substituents other than azo group; m represents an integer of 0 to 1; n represents an integer of from 0 to 3; p represents an integer of from 0 to 2; q represents an integer of from 1 to 3, with the proviso that if there are a plurality of B's, they may be the same or different; R1 and R2 each independently represents hydrogen atom or arbitrary substituent; M can take tridentate or higher coordination in which M may take arbitrary ligand-to-metal coordination at arbitrary substituent or bond in the general formula (1) or with arbitrary ligands; and a metal ion may be further coordinated to A and B, B and B which are adjacent to each other with an azo group interposed therebetween if there are a plurality of B's or B and C in the form of -O-M-O-).
本发明提供了一种具有良好消色差和耐光性的喷墨记录用黑色染料,以及一种含有该黑色染料的记录液。
换句话说,喷墨记录液含有一种金属螯合偶氮染料,其游离酸基由以下通式(1)表示,还可选择其他水溶性染料:
(其中,通式(1)代表每分子至少有一个或多个亲水基团的化合物;M 代表任意金属;A、B 和 C 各自独立地代表一个芳香环,该芳香环可以有任意取代基;D 代表芳香环,可具有除偶氮基团以外的任意取代基; m 代表 0 至 1 的整数; n 代表 0 至 3 的整数; p 代表 0 至 2 的整数; q 代表 1 至 3 的整数,但如果有多个 B,它们可以相同或不同;R1和R2各自独立地代表氢原子或任意取代基;M可以是三叉配位或更高配位,其中M可以在通式(1)中的任意取代基或键上进行任意配体对金属配位或与任意配体配位;如果有多个B或B和C以-O-M-O-的形式存在,金属离子可以进一步与A和B配位,B和B相邻,中间夹有偶氮基团。)