| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composition which has no halogenated epoxy resin and Sb2O3 and shows excellent moldability, high flame retardancy and reliability by making the composition contain an epoxy resin, a phenolic resin hardening agent, a microcapsule type flame retardant obtained by coating a core material containing red phosphorous as a major component with a thermoplastic resin and/or a thermosetting resin, a molybdenum compound and an inorganic filler. SOLUTION: A content of red phosphorous in a core material of a microcapsule to be used is preferably 60 to 99.5 wt.%, particularly 80 to 99 wt.%. The microcapsule particle preferably has an average diameter of 0.1 to 100μm, preferably 0.2 to 40μm, particularly 0.5 to 20μm in view of flame retardancy, dispersibility, workability (low viscosity of the composition) and the like. The molybdenum compound is preferably zinc molybdate or zinc molybdate supported on an inorganic filler.
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