COLORED COMPOSITE MICROPARTICLE, METHOD FOR PRODUCTION OF COLORED COMPOSITE MICROPARTICLE, COLORING MATERIAL, COLOR FILTER, AND INK-JET INK
申请人:TODA KOGYO CORPORATION
公开号:EP1930380A1
公开(公告)日:2008-06-11
There are provided colored composite microparticles having a fine primary particle diameter and exhibiting a high tinting strength, an excellent dispersibility and an excellent light fastness; a process for producing the colored composite microparticles; and a dispersion of the colored composite microparticles. The colored composite microparticles are composite particles comprising silica and an organic pigment in which the silica is enclosed in the organic pigment and contained in an amount of 0.001 to 9% by weight (calculated as Si) based on the weight of the composite particles. The coloring composition for color filters is prepared by dispersing a colorant for color filters comprising the colored composite microparticles in a coloring composition base material, whereas the ink for ink-jet printing is prepared by dispersing a colorant for inks for ink-jet printing comprising the colored composite microparticles in an ink base solution. The colored composite microparticles have a high tinting strength and are excellent in dispersibility and light fastness, and therefore, can be suitably used in various applications such as ordinarily used paints, printing inks, etc., irrespective of an aqueous system or a solvent system.
本发明提供了具有细小主颗粒直径并表现出高着色力、优异分散性和优异耐光性的有色复合微颗粒;有色复合微颗粒的生产工艺;以及有色复合微颗粒的分散体。有色复合微颗粒是由二氧化硅和有机颜料组成的复合颗粒,其中二氧化硅被包裹在有机颜料中,含量为复合颗粒重量的 0.001 至 9%(以 Si 计)。用于彩色滤光片的着色组合物是通过将包含彩色复合微颗粒的彩色滤光片着色剂分散在着色组合物基料中来制备的,而用于喷墨打印的墨水则是通过将包含彩色复合微颗粒的喷墨打印墨水着色剂分散在墨水基液中来制备的。有色复合微粒具有很高的着色强度,分散性和耐光性也很好,因此,无论在水性体系还是溶剂体系中,都可以适当地用于各种应用,如常用的涂料、印刷油墨等。