| 摘要 |
PROBLEM TO BE SOLVED: To provide an epoxy resin composition excellent in packing property to a thin-wall part as well as in crack resistance and having a high glass transition temperature, and a coil insulated by cast molding the same. SOLUTION: This epoxy resin composition contains as essential components (A) a bifunctional alicyclic epoxy resin, (B) a hydrogenated methylnadic acid curing agent, (C) an imidazole-based curing accelerator and (D) an inorganic filler, and is composed of two packages, that is, a resin component comprising a liquid epoxy resin comprising the component (A) having incorporated therein 25-95 wt.%, based thereon, of (D) the inorganic filler and a liquid curing agent component comprising (B) the curing agent and (C) the curing accelerator. The titled coil is insulated by a cast molded body of the epoxy resin composition.
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