| abstract |
PROBLEM TO BE SOLVED: To provide composite particles that highly suppress the surface activity of zinc oxide and have both high transparency and ultraviolet shielding property, a method for producing the same, and a cosmetic containing the same. SOLUTION: Polyolefin resin having a crystallinity of 80% or less and zinc oxide, composite particles obtained by melt dispersion method or melt spray cooling method, or polyolefin resin having a crystallinity of 80% or less and zinc oxide Composite particles having a residual ratio of zinc oxide in a particle of 50% by weight or more after being immersed in a 0.5 mol / L hydrochloric acid solution at 25 ° C. (solution composition is water and ethanol at an equal volume ratio) for 1 hour. And a production method thereof, and a cosmetic containing the composite particles. [Selection figure] None |