| 摘要 |
PURPOSE: To provide the subject device having excellent stability in terms of qualities, coated with a composition having excellent melt fluidity, high curing rate and excellent workability obtained by blending a crystalline epoxy resin with fused silica powder and a curing agent. CONSTITUTION: This device is coated with a composition obtained by blending (A) a crystalline epoxy resin, preferably a 4,4'-bis(2",3"-epoxypropoxy)-3,3',5,5'- tetramethylbiphenyl of the formula (R is CH or CH3) with (B) fused silica powder (e.g. quartz glass powder) having 0.1-30μm particle diameter and (C) a curing agent (e.g. diaminodiphenylmethane) in the ratio of preferably 100-300 pts. of the component B based on 100 pts.wt. of the component A. The blending ratio of the composition, for example, is preferably 0.5-1.5 as the ratio of the number of functional groups of the component C to that of the epoxy groups of the component A.
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