AQUEOUS SILICA DISPERSION WITH LONG SHELF LIFE FOR FIRE-RESISTANT GLASS

摘要

The invention relates to aqueous silica dispersion with a pH in the range from 8 to 14, comprising a base chosen from the group consisting of alkali metal hydroxides, (akyl)ammonium hydroxides or a mixture thereof, at least 35% by weight of silica particles surface-treated with an amino-organosilane (I) and/or a product of hydrolysis of compound of formula (I), 3% to 35 % by weight of at least one polyol, 20% to 60 % by weight of water, preparation of such dispersion and the use thereof in fire-resistant glass.