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    • 9. 发明授权
    • Aqueous colorant dispersion, production method of aqueous colorant dispersion, and aqueous ink for inkjet recording
    • 水性着色剂分散体,水性着色剂分散液的制造方法和喷墨记录用水性油墨
    • US08586648B2
    • 2013-11-19
    • US12391894
    • 2009-02-24
    • Takafumi HosokawaMisato SasadaNaoya Shibata
    • Takafumi HosokawaMisato SasadaNaoya Shibata
    • C08L31/02
    • C09D133/10C09D11/326
    • An aqueous colorant dispersion including a colorant (A), a polymer (B), and an aqueous liquid medium (I), wherein the polymer (B) is a copolymer including a hydrophilic structural unit and a hydrophobic structural unit, the content of the hydrophobic structural unit in the polymer (B) being more than 80% by mass but less than 100% by mass, the hydrophobic structural unit includes a hydrophobic structural unit (a) having an aromatic ring linked via a linking group to an atom included in the main chain of the polymer (B), the content of aromatic rings in the polymer (B) is 10% by mass or more but less than 20% by mass with respect to the mass of the polymer (B), the hydrophilic structural unit includes a hydrophilic structural unit (b) including an ionic group, and the polymer (B) includes a structural unit (c) different from the hydrophobic structural unit (a) and from the hydrophilic structural unit (b), the content of the structural unit (c) in the polymer (B) being more than 15% by mass but less than 90% by mass.
    • 包含着色剂(A),聚合物(B)和水性液体介质(I)的水性着色剂分散体,其中聚合物(B)是包含亲水结构单元和疏水结构单元的共聚物,其含量 聚合物(B)中的疏水性结构单元大于80质量%但小于100质量%,疏水性结构单元包括疏水结构单元(a),其具有通过连接基团与包含在 聚合物(B)的主链,聚合物(B)中的芳环的含量相对于聚合物(B)的质量为10质量%以上且小于20质量%,亲水结构 单元包括包含离子基团的亲水性结构单元(b),聚合物(B)包括与疏水性结构单元(a)不同的结构单元(c)和亲水性结构单元(b)的含量 聚合物(B)中的结构单元(c)大于15% 屁股,但小于90质量%。