BLACK PIGMENT COMPOSITION
    41.
    发明公开
    BLACK PIGMENT COMPOSITION 有权
    黑色颜料成分

    公开(公告)号:EP2956509A1

    公开(公告)日:2015-12-23

    申请号:EP14701294.2

    申请日:2014-01-25

    IPC分类号: C09B67/22 G03G9/09

    摘要: The invention provides a black pigment composition capable of overcoming the drawbacks of carbon black pigments, which, when used as a toner colorant in particular, is able to reduce color shading over time and improve image qualities through an improvement in charging performances such as charge leakage and the like. The invention also provides a chromatic pigment composition able to reduce and correct the tinge of a carbon black pigment while improving fading stability, when the composition is added to a carbon black composition for electrophotographic toners. The black pigment composition contains, as essential pigments, a pigment P1 having a maximum absorption wavelength λ
    max (nm) within the range of 460 ≤λ
    max ≤ 530 and a half-value wavelength (long wavelength side) of the absorption spectrum of 550 nm or more, and a pigment P2 having a maximum absorption wavelength λ
    max (nm) within the range of 600 ≤ λ
    max ≤ 700, as measured in the form of a dispersion in a solvent (methyl ethyl ketone).

    METHOD OF PRODUCING A COMPOUND HAVING A COLORANT STRUCTURE, AND TONER CONTAINING A COMPOUND OBTAINED BY THE PRODUCTION METHOD
    43.
    发明公开
    METHOD OF PRODUCING A COMPOUND HAVING A COLORANT STRUCTURE, AND TONER CONTAINING A COMPOUND OBTAINED BY THE PRODUCTION METHOD 审中-公开
    用于生产的方法得到的组分与染料结构和墨粉的连接

    公开(公告)号:EP2927285A1

    公开(公告)日:2015-10-07

    申请号:EP15161850.1

    申请日:2015-03-31

    摘要: Provided are a method of producing a compound having a colorant structure suitable for a pigment dispersant, and a pigment dispersant, a pigment composition, a pigment dispersion, and a toner each containing the compound. The production method is a method of producing a compound in which a polymer portion and a colorant portion are bonded to each other through a linking group, the method including the steps of: (a) polymerizing a vinyl-based polymerizable monomer represented by the formula (A) with a radical initiator having a protective group by living radical polymerization to provide a polymer having the protective group at a terminal thereof; (b) hydrolyzing the protective group of the polymer having the protective group at a terminal thereof obtained by the step (a) to deprotect the polymer; and (c) bonding the deprotected polymer obtained by the step (b) and a colorant to each other through a covalent bond.

    摘要翻译: 本发明提供生产具有适合于颜料分散剂的着色剂结构的化合物的方法,以及颜料分散剂,颜料组合物,颜料分散体,并且每个含有该化合物的调色剂。 的制造方法是制造在其中聚合物部分和着色剂部分,通过一个连接基团,该方法包括以下步骤彼此结合的化合物的方法:(a)聚合由下式表示的乙烯基类可聚合单体 (A)用具有由活性自由基聚合,以提供具有保护基团在其末端的聚合物的保护基团的基团引发剂; (B)水解具有在由步骤(a)去保护所述聚合物及其获得的终端的保护基团的聚合物的保护基团; 和(c)接合由所述步骤(b)和通过共价键的着色剂,以获得海誓山盟脱保护的聚合物。