| abstract |
[PROBLEMS] To provide a thermosetting resin composition using a carboxyl group-containing resin which is excellent in thermosetting, can suppress the occurrence of blocking, and simultaneously satisfies flame retardancy, low warpage, flexibility, heat resistance and the like. . A thermosetting resin composition comprising (A) a resin containing one or more carboxyl groups in a molecule, (B) a compound containing an oxirane ring, and (C) an organic filler containing a phosphorus atom. The terminal hydroxyl group-containing urethane prepolymer (c) obtained by reacting the polycarbonate polyol compound (a) with the diisocyanate compound (b), wherein the resin (A) containing one or more carboxyl groups in the molecule ) And a tetracarboxylic dianhydride (d), which is a carboxyl group-containing resin obtained. [Selection figure] None |