| abstract |
PROBLEM TO BE SOLVED: To provide a composition of a thermosetting resin having a dihydrobenzoxazine ring, which has improved adhesiveness between a resin and a reinforcing agent and has excellent hygroscopicity and mechanical properties, and a cured product thereof. SOLUTION: In the thermosetting resin composition containing a thermosetting resin having a dihydrobenzoxazine ring, a reinforcing agent selected from an organic filler, an inorganic filler and a fiber agent, and a coupling agent, a coupling agent is used. A compound represented by the following formula (1) or (2) is used. Embedded image [Selection diagram] None |