Tetrakisazo Compound, Coloring Matter for Recording, Ink Composition and Colored Article
申请人:Ohno Hiroaki
公开号:US20070227388A1
公开(公告)日:2007-10-04
The present invention relates to black coloring matter, and relates to a compound represented by the following formula (1):
(wherein A and D independently represent an optionally substituted phenyl group or naphthyl group, respectively, and m and n represent 1 or 2, respectively), and the coloring matter for recording and an ink comprising the same. Said compound exhibits high solubility in a medium containing water as a main component, is stable even when an aqueous dye solution or an ink having a high concentration is prepared therefrom and is stored for a long period of time, has low color rendering property, exhibits colorless and neutral black, provides a printed image having high density and also provides a black recorded image being excellent in moisture fastness, light fastness and an ozone gas fastness, and further can be synthesized easily and can be produced at a low cost.
本发明涉及黑色着色剂,涉及以下式(1)表示的化合物:
(其中A和D分别独立地代表一个可选地取代的苯基或萘基,m和n分别代表1或2),以及用于记录的着色剂和包含该着色剂的墨水。所述化合物在水作为主要成分的介质中表现出高溶解性,即使从其中制备了高浓度的水基染料溶液或墨水并长时间储存,也非常稳定,具有低显色性,呈现出无色和中性黑色,提供高密度的印刷图像,并且提供具有优异的耐湿性、耐光性和臭氧气体稳定性的黑色记录图像,并且可以容易地合成,可以低成本生产。