A-B block co-polymer, A-B block co-polymer production method, resin treatment pigment composition, resin treatment pigment composition production method, pigment dispersion, and pigment dispersion solution
申请人:DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
公开号:US10982020B2
公开(公告)日:2021-04-20
There is provided a resin-treated pigment that is useful as a coloring agent for color filters or inkjet inks, that can expand a hue range and improve performances such as color density, color developability, and transparency, and that is excellent in properties such as dispersibility and dispersion stability of pigments, re-dissolvability, and alkali-solubility. An A-B block copolymer 90% by mass or more of which is constituted by a methacrylate-based monomer or methacrylate-based monomers, in which the block A has a carboxy group-containing methacrylate as a constituent, and the block B has an ionic bond moiety represented by formula (1) as a constitutional unit, the ionic bond moiety containing a methacrylate, and an organic coloring matter having one or more sulfonate ions each being bonded thereto and each being a counter ion of a nitrogen cation of a quaternary ammonium salt.
本发明提供了一种经树脂处理的颜料,该颜料可用作彩色滤光片或喷墨墨水的着色剂,能扩大色调范围并改善色密度、显色性和透明度等性能,而且在颜料的分散性和分散稳定性、再溶解性和碱溶解性等方面性能优异。一种 A-B 嵌段共聚物,其 90% 或更多的质量由甲基丙烯酸酯类单体或甲基丙烯酸酯类单体构成,其中嵌段 A 以含羧基的甲基丙烯酸酯为组成成分,嵌段 B 以式(1)表示的离子键分子为组成单元、该离子键分子含有甲基丙烯酸酯,以及一种有机着色剂,该着色剂具有一个或多个磺酸根离子,每个磺酸根离子都与之键合,并且每个磺酸根离子都是季铵盐的氮阳离子的反离子。