申请人:Nippon Kayaku Kabushiki Kaisha
公开号:EP1921116A1
公开(公告)日:2008-05-14
The present invention relates to a water-soluble azo compound represented by the following formula (1)
[KA 1]
(wherein, A represents a hydroxyl group, a morpholino group, an amino group, an aliphatic amine residue which may have a substituent, aromatic amine residue which may have a substituent, a phenoxy group which may have a substituent or an alkoxy group which may have a substituent, R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R2 represents a substituent selected from a hydrogen atom, a halogen atom, a nitro group and a hydroxyl group, n represents an integer number of 1 to 3, respectively) as free acid and an ink composition comprising the same. Said azo compound has hue having high vividness suitable for inkjet recording, said ink composition is excellent in storage stability, and an inkjet recorded article by using this is excellent in fastnesses such as moisture fastness, ozone gas fastness and light fastness.
本发明涉及一种由下式(1)表示的水溶性偶氮化合物
[KA 1]
(其中,A 代表羟基、吗啉基、氨基、可有取代基的脂肪胺残基、可有取代基的芳香胺残基、可有取代基的苯氧基或可有取代基的烷氧基、R1 代表氢原子或具有 1 至 4 个碳原子的烷基,R2 代表分别选自氢原子、卤素原子、硝基和羟基的取代基,n 代表 1 至 3 的整数)作为游离酸和包含游离酸的油墨组合物。所述偶氮化合物具有适合喷墨记录的高鲜艳度色调,所述墨水组合物具有优异的储存稳定性,使用该墨水组合物的喷墨记录物品具有优异的耐湿度、耐臭氧气体和耐光性。