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    • 21. 发明申请
    • PIGMENT DISPERSANT, PRODUCTION METHOD FOR PIGMENT DISPERSANT, AND PIGMENT DISPERSION LIQUID
    • 颜料分散剂,颜料分散剂的生产方法和色素分散液
    • US20150291718A1
    • 2015-10-15
    • US14439918
    • 2013-11-26
    • DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    • Hiroyuki ShimanakaYoshikazu MurakamiYoichi Tagi
    • C08F267/06C08K3/04C08K5/3417C08K5/3437C08F222/10C08K5/3462
    • C08F267/06C08F220/18C08F222/10C08F290/062C08F2438/00C08K3/04C08K5/3417C08K5/3437C08K5/3462C08K5/42C08K2201/003C09B67/009C09D7/40C09D7/45C09D11/101C09D11/107C09D11/326C09D17/00C08F220/30C08F2220/185C08F220/34
    • The present invention provides: a pigment dispersant that exhibits an effect in a small amount of addition and imparts a high degree of fine dispersibility, stability, and fluidity; a pigment dispersion liquid using the pigment dispersant; and a technology that makes it possible to obtain the pigment dispersant through living radical polymerization: which is environmentally friendly; the process of which is easy; and which is advantageous in terms of cost. The pigment dispersant containing a polymer as a main component, wherein the polymer is a graft copolymer formed through living radical polymerization using two or more monomers containing: a methacrylate A having an acidic group or a basic group; and a methacrylate-based macromonomer B having a methacrylate residue at one terminal of a particular polymer chain having a molecular weight of from 500 to 5000, in a ratio so that the total number of moles of the methacrylate-based monomers in the raw material monomers is from 20 to 50 mol based on 1 mol of a polymerization-initiating compound, the graft copolymer: having a main chain with the A component-derived acidic group or basic group bonded thereto; and the B component-derived polymer chain in a proportion of the polymer chain in the polymer of from 50 to 90 mass % expressed as a mass ratio.
    • 本发明提供一种颜料分散剂,其在少量添加中具有效果,赋予高分散性,稳定性和流动性高; 使用该颜料分散剂的颜料分散液; 以及通过活性自由基聚合获得颜料分散剂的技术,其是环境友好的; 其过程容易; 并且在成本方面是有利的。 含有聚合物作为主要成分的颜料分散剂,其中聚合物是通过使用两种或更多种含有具有酸性基团或碱性基团的甲基丙烯酸酯A的单体的活性自由基聚合形成的接枝共聚物; 以及具有分子量为500〜5000的特定聚合物链的一个末端的甲基丙烯酸酯残基的甲基丙烯酸酯类大分子单体B的比例使原料单体中的甲基丙烯酸酯系单体的总摩尔数 基于1摩尔聚合引发化合物为20-50摩尔,接枝共聚物:具有与A成分导致的酸性基团或碱性基团键合的主链; 以聚合物链中聚合物的比例为50〜90质量%的B成分聚合物链,以质量比表示。