ROUNDED ZINC PEROXIDE PARTICLES, ROUNDED ZINC OXIDE PARTICLES, METHOD FOR PRODUCTION THEREOF, COSMETIC AND HEAT RELEASING FILLER

摘要

[Problem] To provide rounded zinc peroxide particles having a large particle size and excellent properties in that the average particle size is 0.04 µm or larger, the aspect ratio is small, and the shape is close to spherical, rounded zinc oxide particles having a small aspect ratio and a sharp particle size distribution obtained by firing the rounded zinc peroxide particles, a manufacturing method therefor, a cosmetic material formulated with these rounded zinc oxide particles, and a heat-dissipating filler. [Solution] Rounded zinc peroxide particles having an average particle size of 0.04 µm or higher and an aspect ratio of 2.0 or lower, and rounded zinc oxide particles having an average particle size of 0.04 µm or higher and an aspect ratio of 2.0 or lower obtained by pyrolysis of the rounded zinc peroxide particles.