| abstract |
[PROBLEMS] Rounded zinc peroxide particles having large particle diameters having an excellent performance in that the average particle diameter is 0.04 µm or more, the aspect ratio is small, and are close to the spherical shape, the aspect ratio obtained by firing it is small, and the particle size distribution is sharp, round. Provided are shaped zinc oxide particles, a method for producing them, and a cosmetic and heat dissipating filler incorporating such round zinc oxide particles. [Solving means] Round zinc oxide particles having an average particle diameter of 0.04 µm or more and an aspect ratio of 2.0 or less, and round zinc oxide particles having an average particle diameter of 0.04 µm or more and an aspect ratio of 2.0 or less, obtained by thermal decomposition of the round zinc peroxide particles. . |