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    • 52. 发明授权
    • Pigment, method for producing pigment, pigment dispersion, and electrostatic image developing powder toner
    • 颜料,颜料的制造方法,颜料分散体和静电图像显影粉末调色剂
    • US06784231B2
    • 2004-08-31
    • US10100063
    • 2002-03-19
    • Katsunori ShimadaJunko Sunouchi
    • Katsunori ShimadaJunko Sunouchi
    • C09B3522
    • C09B67/0015C09B67/0028G03G9/091
    • A pigment having weak dispersion force to be readily dispersed in a medium to be colored from which an excellent yellow image having superior transparency can be produced. The pigment includes a compound having the same chemical formula as C.I. Pigment Yellow 180. The BET specific surface area based on the nitrogen absorption process of the pigment is 20-100 m2/g, and the ratio of the absolute strength of X-ray diffraction at Bragg angle 2&thgr;=17.5°±0.2° to the absolute strength of X-ray diffraction at Bragg angle 2&thgr;=18.2°±0.2° of the pigment in a powder X-ray diffraction diagram using a CuK&agr; characteristic X-ray is less than 1.8/1.0. The present invention also provides a dispersion including the pigment and a thermoplastic resin having excellent transparency and color strength.
    • 具有弱分散力的颜料容易分散在待着色的介质中,由此可以制备出具有优异的透明度的黄色图像。 颜料包括具有与C.I.相同化学式的化合物。 颜料黄180.基于颜料的氮吸收过程的BET比表面积为20-100m 2 / g,布拉格角2θ= 17.5°±0.2°的X射线衍射绝对强度的比例 °与使用CuKalpha特征X射线的粉末X射线衍射图中的颜料的布拉格角2θ= 18.2°±0.2°的X射线衍射的绝对强度小于1.8 / 1.0。 本发明还提供了包含颜料和具有优异的透明性和着色强度的热塑性树脂的分散体。