Title:
MANUFACTURING METHOD FOR HOLLOW PARTICLES
Document Type and Number:
WIPO Patent Application WO/2019/189020
Kind Code:
A1
Abstract:
According to the present invention, hollow particles that maintain a white color in oil are provided using a simple low-cost method. This manufacturing method for hollow particles is characterized by: adding, to a core particle liquid dispersion containing core particles, a water-soluble salt, and water and having a water-soluble salt concentration of 1.0 mol/L or more with respect to the solution, a silica material in an amount such that the silica-covering amount per unit surface area of the core particles equals 0.02 g/m2 or more while maintaining the temperature of the reaction system at 50°C or lower, to produce a hollow-particle precursor in which the core particles are coated with silica; and removing the core particles from the hollow-particle precursor to produce the hollow particles.
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Inventors:
MATSUBARA TOSHIYA (JP)
KATAYAMA HAJIME (JP)
UDO TAKESHI (JP)
KATAYAMA HAJIME (JP)
UDO TAKESHI (JP)
Application Number:
PCT/JP2019/012579
Publication Date:
October 03, 2019
Filing Date:
March 25, 2019
Export Citation:
Assignee:
AGC INC (JP)
AGC SI TECH CO LTD (JP)
AGC SI TECH CO LTD (JP)
International Classes:
C01B33/18; C09C1/28
Domestic Patent References:
| WO2016152872A1 | 2016-09-29 | |||
| WO2006129408A1 | 2006-12-07 |
Foreign References:
| JP2000500113A | 2000-01-11 | |||
| JPH11508639A | 1999-07-27 | |||
| JP2006256921A | 2006-09-28 | |||
| JP2007217267A | 2007-08-30 |
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
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