HEXAGONAL-PLATE-SHAPED ZINC OXIDE PARTICLES PRODUCTION METHOD THEREFOR AND COSMETIC MATERIAL HEAT-DISSIPATING FILLER HEAT-DISSIPATING RESIN COMPOSITION HEAT-DISSIPATING GREASE AND HEAT-DISSIPATING COATING COMPOSITION HAVING SAME BLENDED THEREIN

摘要

A hexagonal plate-shaped zinc oxide particle which can be used as a cosmetic raw material and a heat radiating filler, a process for producing the same, a cosmetic composition containing the same, a heat radiating filler, a heat radiating resin composition, a heat radiating grease and a radiating coating composition are obtained. [MEANS FOR SOLVING PROBLEMS] A hexagonal particle having a primary particle size of 0.01 μm or more, an aspect ratio of 2.5 or more, and a particle of 50% or more satisfying all the following (1) and (2) out of 250 particles in a transmission electron micrograph Wherein the hexagonal plate-shaped zinc oxide particles have an upper surface. (1) Having a hexagonal surface (2) Dmin / Dmax? 0.3 Dmax: the maximum diagonal length of the three diagonal lines of the hexagonal top surface of hexagonal plate-shaped zinc oxide particles. Dmin: the length of the diagonal line that is the smallest of the three diagonals of the top surface of the hexagon of hexagonal plate-shaped zinc oxide particles.