| 摘要 |
PROBLEM TO BE SOLVED: To obtain an epoxy resin compsn. improved in the resistances to moisture, tracking, arc, and heat by compounding an epoxy resin, a carboxylic anhydride, a cure accelerator, a specific inorg. filler, and a silane coupling agent. SOLUTION: This compsn. is prepd. by compounding 100 pts.wt. epoxy resin having an epoxy equivalent of 55-800 and comprising a bisphenol epoxy resin having an epoxy equivalent of 450-4,000 and 5-40wt.% halogenated bisphenol epoxy resin having an epoxy equivalent of 300-800, a carboxyic anhydride in an equivalent ratio of its carboxyl group to the epoxy group of the epoxy resin of 0.4-0.9, 0.01-5 pts.wt. cure accelerator, 30-170 pts.wt. inorg. filler having an average particle size of 40μm or lower, and a silane coupling agent in an amt. of 0.1-3wt.% of the filler.
|
