Method of forming porous metal oxide microspheres using polydisperse polymer nanospheres
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United States of America Patent
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Nov 30, 2021
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Mar 14, 2019
app pub date -
Sep 10, 2018
filing date -
Sep 11, 2017
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Abstract
Porous metal oxide microspheres are prepared via a process comprising forming a liquid solution or dispersion of polydisperse polymer nanoparticles and a metal oxide; forming liquid droplets from the solution or dispersion; drying the liquid droplets to provide polymer template microspheres comprising polymer nanospheres and metal oxide; 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.
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