| 摘要 |
PURPOSE:To obtain disintegrable fine particles especially useful in the fields of cosmetics, having excellent spread, adhesivity, feeling in use, adhesiveness, shelf stability and moldability, comprising formed secondary particles having specific average particle diameter prepared by aggregation of organic resin fine particles of primary particles having specific average particle diameter. CONSTITUTION:Organic resin fine particles of primary particles which have <=0.1mum, preferably 0.02-0.1mum average particle diameter and comprise preferably a monomer having ethylenic unsaturated bond, more preferably a monomer having one unsaturated bond or a crosslinkable monomer having two or more unsaturated bonds, especially acrylic acid, methacrylic acid, styrene, vinyl alcohol or a derivative thereof are aggregated to give readily disintegrable fine particles which comprise secondary particles having 1-100mum average particle diameter, show excellent spreadability and adhesivity, do not disintegrate the aggregated particles by medium in cosmetic, have excellent dispersion stability and above-mentioned effects and are especially useful as a compounding agent for cosmetics. |
