| abstract |
PROBLEM TO BE SOLVED: To be able to stably store at room temperature for a long period of time, to be quickly cured by heating at the time of molding, and to give a molded product of good curability and high quality. Provided is a thermosetting resin composition. SOLUTION: As a latent catalyst such as an epoxy resin and a maleimide resin, a tetra-substituted phosphonium tetra-substituted borate represented by the general formula [1] is blended. Embedded image In the formula, R 1 to R 4 are an organic group having an aromatic ring or a hetero ring or a monovalent aliphatic group, which may be the same or different. Ar is a group containing a divalent aromatic or heterocyclic ring having substituents X and Y in the molecule. X and Y are groups in which a monovalent proton-donating substituent emits a proton, and the substituents X and Y in the same Ar molecule combine with a boron atom to form a chelate ring. |