| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition having excellent hardening properties and mold releasability, and capable of giving a hardened product excellent in moldability and storage stability by compounding an epoxy resin, a hardener, an inorganic filling material and a specific organic phosphorus compound as a hardening accelerator. SOLUTION: This composition is obtained by compounding (A) an epoxy resin (e.g. a novolac-type epoxy resin), (B) a hardener (e.g. a resol type phenolic resin), (C) an inorganic filling material (e.g. fused silica) and (D) an organic phosphorus compound (e.g. a compound of formula III) expressed by formula I R<1> is H or the like; (n)=0-5; X is (CH2 )p [(p)=3-12] or a group expressed by formula II [R<2> is H or the like; (q) and (r) are each 0-12; (m)=0-4]} as a hardening accelerator. In the above composition, the component C and the component D are preferably compounded in an amount of 200-1200 pts.wt. and 0-500 pts.wt., respectively, based on 100 pts.wt. of the total of the component A and the component B. |
