abstract |
(57) [Summary] (Modified) [PROBLEMS] To provide a curing accelerator for an epoxy resin, which has improved adhesiveness, which is a characteristic of a phenol novolac salt of DBU, but has improved storage stability, which is a drawback thereof. SOLUTION: 10 to 20% by weight of 1,8-diazabicyclo (5,4,0) undecene-7, 6 to 18% by weight of tetraphenylphosphonium tetraphenylborate and 62-84% by weight of phenol novolacs, 160-220 It is obtained by uniformly melting and mixing at a temperature of ° C. |