| 摘要 |
PROBLEM TO BE SOLVED: To provide an epoxy resin composition excellent in curability and transparency of the epoxy resin composition.SOLUTION: A resin composition contains (A) an epoxy resin, (B) a curing agent, (C) a salt of phosphonium cation represented by the general formula (1) and anion residue of phthalic acids represented by the general formula (2) as a curing accelerator, exhibiting curing behavior with low viscosity at heating initial and steep thermal time rising-up of hardness during curing and becomes colorless transparent when a cured article is acid anhydride.SELECTED DRAWING: Figure 1 |
