• Patent Title: HOLLOW PARTICLES, PRODUCTION METHOD THEREFOR, AND AQUEOUS DISPERSION CONTAINING HOLLOW PARTICLES
  • Application No.: EP19867363.4
    Application Date: 2019-09-11
  • Publication No.: EP3858473A1
    Publication Date: 2021-08-04
  • Inventor: HIRATA, TakeshiYABUKI, Nozomi
  • Applicant: Zeon Corporation
  • Applicant Address: JP Tokyo 100-8246 6-2, Marunouchi, 1-chome Chiyoda-ku
  • Agency: Gerauer, Marc Philippé
  • Priority: JP2018184914 20180928
  • International Announcement: WO2020066623 20200402
  • Main IPC: B01J13/22
  • IPC: B01J13/22 C08F220/10 C08J7/04
HOLLOW PARTICLES, PRODUCTION METHOD THEREFOR, AND AQUEOUS DISPERSION CONTAINING HOLLOW PARTICLES
Abstract:
Provided are hollow particles which are more excellent in heat resistance and dispersibility than ever before and which are lightweight. The hollow particles containing hollow resin particles having a surface covered with inorganic fine particles, wherein a volume average particle diameter of the hollow particles is from 0.1 µm to 9.0 µm, and a void ratio thereof is from 55% to 95%; wherein a repeating unit constituting the resin of the hollow resin particles contains a crosslinkable monomer unit, and a content of the crosslinkable monomer unit is from 25 to 100 parts by mass, with respect to 100 parts by mass of the resin; wherein a primary particle diameter of the inorganic fine particles is from 10 nm to 120 nm; and wherein the inorganic fine particles are contained at from 5 to 180 parts by mass, with respect to 100 parts by mass of the hollow resin particles.
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