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    • 74. 发明授权
    • Methods of making quinacridone nanoscale pigment particles
    • 制备喹吖啶酮纳米级颜料颗粒的方法
    • US07427324B1
    • 2008-09-23
    • US11933461
    • 2007-11-01
    • Maria M. BirauRina CarliniKarl W. DawsonSandra J. GardnerC. Geoffrey AllenCaroline M. Turek
    • Maria M. BirauRina CarliniKarl W. DawsonSandra J. GardnerC. Geoffrey AllenCaroline M. Turek
    • C09B48/00C09B67/20C09B67/52
    • C09B67/0005B82Y30/00C09B67/0096
    • A nanoscale pigment particle composition includes a quinacridone pigment having at least one functional moiety, and a sterically bulky stabilizer compound having at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, so as to afford nanoscale-sized particles of the pigment. The composition is made by providing a first solution containing a quinacridone pigment precursor or a crude quinacridone pigment, having at least one functional moiety; providing a second solution containing stabilizer molecules of a sterically bulky stabilizer compound having one or more functional groups that associate non-covalently with the functional moiety of the pigment or precursor; combining the first and second solutions to form a third mixture of precipitated quinacridone pigment particles having nanoscale particle sizes, and wherein the functional moiety of the pigment associates non-covalently with the functional group of the stabilizer compound.
    • 纳米级颜料颗粒组合物包括具有至少一个官能部分的喹吖啶酮颜料和具有至少一个官能团的空间庞大的稳定剂化合物,其中所述官能部分与所述官能团非共价缔合; 并且相关稳定剂的存在限制了颗粒生长和聚集的程度,从而提供了纳米尺寸的颜料颗粒。 通过提供含有具有至少一个官能部分的喹吖啶酮颜料前体或粗喹吖啶酮颜料的第一溶液来制备组合物; 提供含有稳定剂分子的第二溶液,所述稳定剂分子具有一个或多个与所述颜料或前体的功能部分非共价缔合的官能团的稳定剂化合物; 组合第一和第二溶液以形成具有纳米级粒度的沉淀的喹吖啶酮颜料颗粒的第三混合物,并且其中颜料的官能部分与稳定剂化合物的官能团非共价结合。