公开(公告)号：US20220144712A1

公开(公告)日：2022-05-12

申请号：US17605482

申请日：2020-03-09

Applicant: BASF SE

Inventor： Gerard Finnegan ,  Thomas Thompson ,  Juan Capote ,  Rupa Darji

IPC: C04B38/00 ,  C04B38/06 ,  C04B35/626

Abstract: Use of porous metal oxide microspheres as light stabilizers for shaped artificial polymer articles, wherein the 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.