POROUS METAL OXIDE MICROSPHERES

Porous metal oxide microspheres are prepared via a process comprising forming a liquid dispersion of polymer nanoparticles and a metal oxide; forming liquid droplets of the dispersion; drying the droplets to provide polymer template microspheres comprising polymer nanospheres; and removing the polymer nanospheres from the template microspheres to provide the porous metal oxide microspheres. The porous microspheres exhibit saturated colors and are suitable as colorants for a variety of end-uses. 通过一种方法制备多孔金属氧化物微球，所述方法包括形成聚合物纳米粒子和金属氧化物的液体分散体；形成所述分散体的液体微滴；干燥所述微滴以提供包含聚合物纳米球的聚合物模板微球；和从模板微球中除去聚合物纳米球以提供多孔金属氧化物微球。所述多孔微球表现出饱和色并适合作为用于各种最终用途的着色剂。