IRREGULAR-SHAPED HOLLOW MICROPARTICLE, METHOD FOR PRODUCING SAME, AND COSMETIC MATERIAL AND RESIN COMPOSITION CONTAINING IRREGULAR-SHAPED HOLLOW MICROPARTICLE

摘要

Resin compositions with improved optical characteristics and cosmetic materials with improved feeling, soft focus and durability contain non-spherical hollow fine particles having a spindle shape as a whole with a major axis and a minor axis, a plurality of concave parts on the surface, a hollow part inside connected to the surface through a crack extending along the major axis, the average length of the major axes being 0.1-30µm and the ratio of the average length of the minor axes to the average length of the major axes being 0.3-0.8.