LEACH-PROOF MICROCAPSULES, THE METHOD FOR PREPARATION AND USE OF LEACH-PROOF MICROCAPSULES

摘要

The present invention is directed to a leach proof microcapsule containing hydrophobic active molecules, wherein the microcapsule shell breaks upon exposure to a positive pressure drop across the inner and outer sides of the shell, 0 in - Pout > 5 bar, wherein Pin and Pout are the pressures in, respectively, out of the microcapsule, wherein the microcapsule shell consists of a alkylated organosilica compound, either fully alkylated or having an alkylation degree comprised between 2 and 25 mol.%, preferably between 5 and 20 mol.%, more preferably between 8 and 15 mol.%. The microcapsules of the present invention are particularly suitable for use in compositions for active-catalyzed polymerization reactions to form sealants, foams, coatings or adhesives.