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    • 7. 发明申请
    • Composite particles and method for production thereof and use thereof
    • 复合粒子及其制造方法及其用途
    • US20060116279A1
    • 2006-06-01
    • US10542023
    • 2004-01-09
    • Hisao KogoiMasayuki SanbayashiJun Tanaka
    • Hisao KogoiMasayuki SanbayashiJun Tanaka
    • C08F4/02C09B67/50
    • B82Y30/00B01J21/063B01J31/06B01J35/004B01J35/023B01J37/0036B01J37/0063B01J37/04B01J37/086C01P2004/62C01P2004/64C09C1/36C09C1/3623C09C1/3653
    • A composite particle comprised of a larger particle and, supported thereon, smaller particles wherein the smaller particles are photocatalyst-containing fine particles with an average particle diameter of 0.005-0.5 μm as calculated from a BET specific surface area, and the larger particle has an average particle diameter of 2-200 μm as measured by the laser diffraction-scattering particle size measuring method. The smaller particle is preferably a composite particle of titanium dioxide with an inorganic compound exhibiting no catalytic activity, such as silica, or a particle containing a Brφonsted acid salt, especially on the surface thereof; and an advantageous method for producing the above composite particles wherein the above larger particles and smaller particles are dry mixed by a ball-mill or mixed by rotation of blades or by shaking, with an energy constant controlled within a specific range. A composition comprising an organic polymer and the above composite particles can give a shaped article, such as fiber, film or a molding, exhibiting ultraviolet ray-screening function.
    • 由较大的颗粒构成的复合颗粒,并且在其上承载较小的颗粒,其中较小的颗粒是由BET比表面积计算的平均粒径为0.005-0.5μm的含光催化剂的微粒,较大的颗粒具有 通过激光衍射 - 散射粒度测量方法测量的平均粒径为2-200μm。 较小的颗粒优选是二氧化钛与显示无催化活性的无机化合物如二氧化硅或含有布法苯酸的颗粒的颗粒,特别是其表面上的复合颗粒; 以及用于制备上述复合颗粒的有利方法,其中通过球磨机干燥混合上述较大颗粒和较小颗粒,或通过旋转叶片或通过摇动将能量常数控制在特定范围内来混合。 包含有机聚合物和上述复合颗粒的组合物可以形成诸如纤维,薄膜或模制品的成形制品,显示紫外线屏蔽功能。