WATER REPELLENT ORGANOSILICON MATERIALS

摘要

A process for increasing the hydrophobicity of a porous product by treating the product, or a composition providing for the product , with a water repellent material, characterised in that the porous product or a composition providing the product , is treated with an aqueous suspension of microcapsules where the microcapsules comprise a water repellent organosilicon core material selected from an organosilane , a partially condensed organosilane and a branched siloxane resin, and a shell of a silicon- based network polymer comprising silica units.