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    • 46. 发明授权
    • Water-based ink composition for inkjet recording
    • 用于喷墨记录的水性油墨组合物
    • US08222326B2
    • 2012-07-17
    • US12535702
    • 2009-08-05
    • Kiyoshi MorimotoKeiichi Tateishi
    • Kiyoshi MorimotoKeiichi Tateishi
    • C09D11/10
    • C09B29/0025C09B29/3656C09B33/12C09B33/24C09B67/0084C09D11/322C09D11/326
    • The invention provides a water-based ink composition for inkjet recording which contains vinyl polymer particles containing a styrene-acrylic acid copolymer in which the total content of the constitutional units derived from styrene monomer, acrylic acid, and methacrylic acid is 45% by mass or more; and at least one of an azo pigment represented by Formula (1), a tautomer thereof, a salt or hydrate thereof; and a water-based liquid medium, and which is excellent in discharge stability after a long-term storage or after aging at high temperatures: wherein, Q represents a heterocyclic group; W represents an alkoxy group, an amino group etc.; X1 and X2 each independently represent a hydrogen atom, an alkyl group etc.; R1 represents a hydrogen atom or a substituent; R2 represents a heterocyclic group; and n represents an integer of 1 to 4.
    • 本发明提供了一种喷墨记录用水性油墨组合物,其含有含有苯乙烯 - 丙烯酸共聚物的乙烯基聚合物颗粒,其中衍生自苯乙烯单体,丙烯酸和甲基丙烯酸的结构单元的总含量为45质量% 更多; 和由式(1)表示的偶氮颜料,其互变异构体,其盐或水合物中的至少一种; 水性液体介质,长期保存后或高温老化后的放电稳定性优异:其中,Q表示杂环基; W表示烷氧基,氨基等; X1和X2各自独立地表示氢原子,烷基等。 R1表示氢原子或取代基; R2表示杂环基; n表示1〜4的整数。