methods for preparing porous metal oxide microspheres and polymer microspheres, porous and polymer microspheres, aggregate samples of porous microspheres and polymer microspheres, and, composition.

摘要

porous metal oxide microspheres are prepared via a process comprising forming a liquid solution or dispersion of polydispersed polymer nanoparticles and a metal oxide; forming liquid droplets from the solution or dispersion; drying the liquid droplets to provide polymer model microspheres comprising polymer nanospheres and metal oxide; and removing the polymer nanospheres from the template microspheres to provide the porous metal oxide microspheres. porous microspheres exhibit saturated colors and are suitable as colorants for a variety of end uses.