MICROCAPSULE CONTAINING ONE OR MORE LIPOPHILIC SUBSTANCES AS CORE MATERIAL AND POLYMER AS CAPSULE SHELL, MANUFACTURING METHOD THEREFOR, ITS USAGE, AND GYPSUM BOARD CONTAINING THE MICROCAPSULE

摘要

PROBLEM TO BE SOLVED: To provide a dispersion liquid of microcapsules which contains microcapsules of a diameter of ≤4 μm at a low rate.;SOLUTION: The microcapsule contains one or more lipophilic substances as core material and a polymer as a capsule shell obtained by radical polymerization of on oil in water emulsion containing 30-100 mass% of one or more 1-24C alkyl esters of acrylic acid and/or methacrylic acid (monomer I) based on the total mass of monomers, 0-80 mass% of a water insoluble of slightly soluble bifunctional or polyfunctional monomer (monomer II) based on the total mass of monomers, 0-40 mass% of other monomer (monomer III) based on the total mass of monomers, lipophilic substances, and inorganic solid particles having an average particle size of 45-1,000 nm.;COPYRIGHT: (C)2004,JPO