TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The content of inorganic compound microparticles (C) is 0.1-20 %mass. The inorganic compound which forms the nanosize inorganic compound microparticles (C) contains inorganic oxide and/or inorganic complex oxide, and/or inorganic compound chosen from silica, alumina, magnesia, titania, zirconia, calcium carbonate, zeolite and talc. Preferred Properties: The average particle diameter of the primary particle of the nanosize inorganic compound microparticles (C) is 1-100 nm. The specific surface area of the nanosize inorganic compound microparticles (C) is 10-1000 m2/g. The average particle diameter of the hardening agent in the core is 0.3-12 mu m.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The content of amine adduct (A) is 24-99 %mass. The content of the low molecular amine compound (B) is 0.5-75 %mass. The hardening agent is in solid state at 25 degrees C. The molecular weight of the low molecular amine compound (B) is 31-600. The low molecular amine compound (B) comprises amino group chosen from primary amino group, secondary amino group, and tertiary amino group. The surface of the nanosize inorganic compound microparticles (C) is hydrophobized by the functional group which comprises compound chosen from alkyl silane, polyalkyl siloxane, phenyl silane, phenyl alkyl silane, silanol, chlorosilane, alkoxysilane, silazane, siloxane, and halogenated silane. The nitrogen-containing heterocyclic compound (P) contains derivative chosen from pyridine derivative, pyrimidine derivative, pyrazine derivative, triazine derivative, quinoline derivative, isoquinoline derivative and purine derivative, preferably pyridine derivative. The hardening agent (h2) is chosen from acid anhydride-type hardening agent, phenol-type hardening agent, hydrazide-type hardening agent, guanidinium-type hardening agent, and thiol-type hardening agent.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The amine adduct (A) is obtained by reaction of compound chosen from carboxylic compound, sulfonic acid compound, urea compound, isocyanate compound, and epoxy resin (e1), and amine compound (a1). The molecular weight distribution of amine adduct (A) is 1-7. The shell comprises reaction product of isocyanate compound, active hydrogen compound, hardening agent (h1), epoxy resin (e2) and low molecular amine compound (G). The epoxy resin composition comprises microcapsule-type latent hardener, epoxy resin (E) and nitrogen-containing heterocyclic compound (P), and in which the content of nitrogen-containing heterocyclic compound (P) is 0.01-15 parts mass with respect to 100 parts mass epoxy resin (E). The epoxy resin composition further contains thermosetting resin chosen from oxetane resin, mono epoxy resin, and polyvalent epoxy resin.