Patent ID: 9198839
Filing Date: 2015-12-01
Classification: A61K,A61Q,B01J,C08L

Abstract:
1. A method for preparing a silicone composite particle composed of a silicone rubber particle and a polyorganosilsesquioxane, wherein the silicone rubber particle has plural dents on its surface and said polyorganosilsesquioxane adheres to the surface of the silicone rubber particle, wherein the method comprises steps of providing a silicone rubber particle containing therein a liquid which is one or more selected from aliphatic hydrocarbons, aromatic hydrocarbons, alcohols, halogenated hydrocarbons, esters, ethers, ketones, and organopolysiloxanes; subjecting organotrialkoxysilane to hydrolysis and condensation reactions in the presence of water, an alkaline substance, and the silicone rubber particle containing therein said liquid to produce polyorganosilsesquioxane on the surface of the silicone rubber particle, to thereby have a resultant polyorganosilsesquioxane adhered to the surface of the silicone rubber particle; and subsequently removing said liquid and water.