Title:
SPHERICAL CRYSTALLINE SILICA PARTICLES, METHOD FOR PRODUCING SAME, AND RESIN COMPOSITE COMPOSITION AND RESIN COMPOSITE CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2023/112928
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: spherical crystal particles having a low lithium content and a high quartz crystallization rate; a method for producing same; and a resin composite composition and resin composite that contain said spherical crystalline silica particles. These spherical crystalline silica particles have a circularity of 0.80 or more, an average particle diameter (D50) of 1.0-100.0 μm, contain lithium at a quantity of no more than/less than 0.05 mass% in terms of oxide and contain calcium at a quantity of 0.10 mass% to less than 1.00 mass% in terms of oxide, and in which 50.0% or more of the particles as a whole is crystalline silica and 90.0% or more of the crystalline silica is quartz. Also provided is a method for producing same.
Inventors:
KUSUNOKI KAZUHIKO (JP)
TANAKA MUTSUHITO (JP)
NUMAO RYUTARO (JP)
SAKASHITA RYOSUKE (JP)
TANAKA MUTSUHITO (JP)
NUMAO RYUTARO (JP)
SAKASHITA RYOSUKE (JP)
Application Number:
PCT/JP2022/045912
Publication Date:
June 22, 2023
Filing Date:
December 13, 2022
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
C01B33/12; C08K3/36; C08L101/00; H01L23/29; H01L23/31
Domestic Patent References:
| WO2021235530A1 | 2021-11-25 | |||
| WO2018186308A1 | 2018-10-11 | |||
| WO2020241902A1 | 2020-12-03 |
Foreign References:
| JP2019064893A | 2019-04-25 | |||
| JP2012102016A | 2012-05-31 | |||
| JPS59203720A | 1984-11-17 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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