Title:
COMPOSITE OXIDE PARTICLES, METHOD FOR PRODUCING SAME, AND CURABLE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/145283
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: composite oxide particles capable of achieving a curable composition (structural color CR) which enables restoration with high color compatibility with natural teeth even after long-term storage and shows suppressed lowering in curability even after long-term storage; a method for producing the composite oxide particles; and a curable composition containing the composite oxide particles. The present invention relates to: composite oxide particles consisting of a group of spherical particles having a predetermined average primary particle diameter within the range of 230-350 nm, wherein 90% or more of the total number of particles in the group of spherical particles have primary particle diameters within the range of ±5% of the predetermined average primary particle diameter, the individual particles constituting the spherical particle group are core-shell type particles in which the surface of silica-based composite oxide particles is coated with a silica layer, and the average thickness of the silica layer is 3-15 nm; a method for producing the composite oxide particles; and a curable composition containing the composite oxide particles.
Inventors:
OYA NAOYUKI (JP)
MORISAKI HIROSHI (JP)
AKIZUMI HIRONOBU (JP)
MORISAKI HIROSHI (JP)
AKIZUMI HIRONOBU (JP)
Application Number:
PCT/JP2022/045838
Publication Date:
August 03, 2023
Filing Date:
December 13, 2022
Export Citation:
Assignee:
TOKUYAMA DENTAL CORP (JP)
International Classes:
C01B33/12; A61K6/16; A61K6/17; A61K6/816; A61K6/818; C08K9/02; C08L101/00
Domestic Patent References:
| WO2017069274A1 | 2017-04-27 | |||
| WO2011016418A1 | 2011-02-10 |
Foreign References:
| JPH11100305A | 1999-04-13 |
Attorney, Agent or Firm:
KATO Ryuta et al. (JP)
Download PDF: