| 摘要 |
PROBLEM TO BE SOLVED: To provide inorganic hollow particles consisting of fine particles with closed pore inside and a method capable of manufacturing these particles in a simple means. SOLUTION: A composite is formed by applying an inorganic compound or its precursor to the surface of organic particles with an average particle size of 0.1-15 μm. After the composite is heat treated, the organic resin particles are decomposed and removed and a film of the inorganic compound is formed. By heating to a prescribed temperature, the film of the inorganic compound compacted to obtain organic hollow particles having an average particle size of 20 μm or less, 0.1-15 μm closed pores inside of particles, closed pore ratio of 30 volume % or more, and BET specific surface area of 30 m2/g or less. |
