Title:
SURFACE-TREATED SILICA PARTICLE DISPERSION SOL AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/068152
Kind Code:
A1
Abstract:
This surface-treated silica particle dispersion sol (22) is formed by dispersing a group of colloidal silica particles in a hydrophobic solvent (21), wherein the colloidal silica particles are composed of an average of 4-300 spherical primary particles, as observed with a field emission-type scanning electron microscope, linked in a chain shape to have an average length of 35-1,800 nm, and the surfaces of the colloidal silica particles are coated with a silane coupling agent or the like having a functional group such as a vinyl group. The average particle diameter of the spherical primary particles is 6-20 nm, and the average aspect ratio of the spherical primary particles is in the range of 1.0-1.3. Each of the colloidal silica particles contains at most 3,500 ppm by mass of impurities such as K, Na, or NH3 and less than 1 ppm by mass of impurities such as alkaline earth metals or aluminum.
Inventors:
YAMAMOTO YUTA (JP)
Application Number:
PCT/JP2022/038168
Publication Date:
April 27, 2023
Filing Date:
October 13, 2022
Export Citation:
Assignee:
MITSUBISHI MAT ELECTRONIC CHEMICALS CO LTD (JP)
International Classes:
C01B33/12; C01B33/145; C01B33/149
Domestic Patent References:
| WO2019131874A1 | 2019-07-04 | |||
| WO2000015552A1 | 2000-03-23 | |||
| WO2010021400A1 | 2010-02-25 | |||
| WO2007018069A1 | 2007-02-15 | |||
| WO2021044988A1 | 2021-03-11 |
Foreign References:
| JP2013253145A | 2013-12-19 | |||
| JP2015021029A | 2015-02-02 | |||
| JP2005313593A | 2005-11-10 | |||
| JP2007327018A | 2007-12-20 | |||
| JP2021170419A | 2021-10-28 | |||
| JPH01317115A | 1989-12-21 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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