Method for producing quinacridone solid solution pigment, pigment dispersion, and inkjet ink

    公开(公告)号:US11773267B2

    公开(公告)日:2023-10-03

    申请号:US17745447

    申请日:2022-05-16

    Abstract: There is provided a technique for producing a quinacridone solid solution pigment, the technique making it possible to obtain a quinacridone solid solution pigment which produces a colored product having high chroma and a bluish hue, more preferably which has controlled particle diameters. Specifically, a method for producing a quinacridone solid solution pigment, the method including a crude quinacridone solid solution production step of subjecting a diarylaminoterepththalic acid and a dialkylarylaminoterephthalic acid to a co-cyclization reaction in polyphosphoric acid, thereby obtaining a water-containing crude quinacridone solid solution containing a solid solution of an unsubstituted quinacridone and a 2,9-dialkylquinacridone, the solid solution containing water, a drying step of drying the water-containing crude quinacridone solid solution to reduce the water content to less than 1% and obtain a powdery, crude quinacridone solid solution, and a pigmentation step of heating the powdery, crude quinacridone solid solution in a liquid medium that cannot dissolve the crude quinacridone solid solution.

    PROCESS FOR PRODUCING QUINACRIDONE PIGMENT COMPOSITION

    公开(公告)号:US20180037741A1

    公开(公告)日:2018-02-08

    申请号:US15554898

    申请日:2016-05-12

    CPC classification number: C09B48/00 C09B67/0066 C09D11/033 C09D11/037

    Abstract: A process for the production of a quinacridone pigment composition is provided. For use in environmentally friendly inks, the pigment composition offers high chroma, high color strength, and high dispersion stability. Also provided is a water- or alcohol-based environmentally friendly ink that contains a quinacridone pigment composition obtained through this process. According to the inventors' research, adding a quinacridone derivative to a quinacridone solid solution in two different steps in a process, during and after treatment for the control of crystals, gives the resulting pigment composition the color characteristics of high color strength and high chroma, as well as high dispersion stability. The present invention is based on these findings.

    METHOD FOR MANUFACTURING COLORED PARTICLE DISPERSION

    公开(公告)号:US20170152393A1

    公开(公告)日:2017-06-01

    申请号:US15322339

    申请日:2015-07-01

    Inventor: Yuuta MATSUMOTO

    Abstract: The present invention provides a process for producing a colored fine particle dispersion suitably used in a water-based ink for ink-jet printing which can be produced by an emulsion polymerization method even when using a pigment having a quinacridone skeleton, is excellent in storage stability, and can provide printed characters or images having excellent rub fastness when printed on a recording medium; the colored fine particle dispersion; and a process for producing a water-based ink for ink-jet printing which includes the colored fine particle dispersion. The present invention relates to [1] a process for producing a colored fine particle dispersion including the step of subjecting a dispersion including a pigment, a polymerizable monomer, a surfactant, a polymerization initiator and water to emulsion polymerization, the pigment being a pigment having a quinacridone skeleton; the surfactant being an anionic or nonionic surfactant; and the polymerization initiator including an anionic or nonionic azo-based compound, [2] a colored fine particle dispersion including colored fine particles having an average particle size of not less than 10 nm and not more than 300 nm, and [3] a process for producing a water-based ink for ink-jet printing, including the step of mixing the obtained colored fine particle dispersion and an organic solvent B.

    ELECTROPHORETIC PARTICLES AND PROCESSES FOR THE PRODUCTION THEREOF
    6.
    发明申请
    ELECTROPHORETIC PARTICLES AND PROCESSES FOR THE PRODUCTION THEREOF 有权
    电生理粒子及其生产方法

    公开(公告)号:US20150218384A1

    公开(公告)日:2015-08-06

    申请号:US14615666

    申请日:2015-02-06

    Abstract: Polymer shells similar to those described in U.S. Pat. No. 6,822,782 can be formed on pigment particles by (a) physi-sorping a reagent comprising polymerizable groups on to the pigment particles by treating the particle with a reagent having a polymerizable or polymerization-initiating group, such that the reagent will not desorb from the particle surface when the particle is placed in a hydrocarbon medium; or (b) treating pigment particles bearing nucleophilic groups with a reagent having a polymerizable or polymerization-initiating group, and an electrophilic group, thus attaching the polymerizable or polymerization-initiating groups to the particle surface. The zeta potential of the pigment particles can be varied by a process similar to (b) but using a reagent which does not have a polymerizable or polymerization-initiating group.

    Abstract translation: 聚合物壳类似于美国专利No. 可以通过(a)通过用具有可聚合或聚合引发基团的试剂处理颗粒来将包含可聚合基团的试剂物理吸附到颜料颗粒上来形成颜料颗粒,使得试剂不会从 当颗粒置于烃介质中时的颗粒表面; 或(b)用具有可聚合或聚合引发基团的试剂和亲电基团处理带有亲核基团的颜料颗粒,从而将可聚合或聚合引发基团连接到颗粒表面。 颜料颗粒的ζ电位可以通过类似于(b)的方法改变,但是使用不具有可聚合或聚合引发基团的试剂。

    Pigment dispersion composition, curable color composition, color filter and method for producing the same
    8.
    发明授权
    Pigment dispersion composition, curable color composition, color filter and method for producing the same 有权
    颜料分散组合物,可固色组合物,滤色器及其制造方法

    公开(公告)号:US08273167B2

    公开(公告)日:2012-09-25

    申请号:US12740117

    申请日:2008-10-24

    Abstract: The present invention provides: a pigment dispersion composition including (A) an organic pigment, (B) a pigment derivative represented by Formula (I) below and (C) a polymer compound having a pigment-adsorptive functional group; a curable color composition including the pigment dispersion composition, a polymerizable compound and a polymerization initiator; and a color filter having a color region formed using the curable color composition and a method for producing the same. Q represents an organic colorant residue; A represents an ethylene group or the like; and R represents a hydroxyl group or a group represented by —NH-A-Z; Z represents —SO3H, —COOH or a salt thereof; and n represents an integer of from 1 to 4. When R represents —NH-A-Z, the structures represented by the two —NH-A-Zs bonded to the triazine ring contained in each of the n partial structures bonded to Q may be the same as each other or different from each other.

    Abstract translation: 本发明提供:(A)有机颜料,(B)下述通式(I)表示的颜料衍生物和(C)具有颜料吸附官能团的高分子化合物的颜料分散组合物, 包含颜料分散组合物,可聚合化合物和聚合引发剂的可固化着色组合物; 以及具有使用该固化性颜色组合物形成的颜色区域的滤色器及其制造方法。 Q表示有机着色剂残渣; A表示亚乙基等; 并且R表示羟基或由-NH-A-Z表示的基团; Z表示-SO 3 H,-COOH或其盐; n表示1〜4的整数。当R表示-NH-AZ时,结合到Q的n个部分结构中的每一个中包含的与三嗪环结合的两个-NH-A-Z表示的结构可以是 彼此相同或彼此不同。

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