EPOXY RESIN COMPOSITION, RESIN SHEET, PREPREG, LAMINATE, PROCESS FOR PRODUCING EPOXY RESIN COMPOSITION, AND CURED OBJECT

摘要

An epoxy resin composition which comprises an epoxy resin monomer having a mesogen skeleton, an oligomer thereof, a hardener comprising a novolak resin, and an inorganic filler, wherein the oligomer includes a product of the reaction of the epoxy resin monomer having a mesogen skeleton with the novolak resin, the oligomer has a weight-average molecular weight, as measured by gel permeation chromatography, of 1,000-3,000, the endothermic peak area as determined by differential scanning calorimetry is 2.5 J/g or less, and when a sample thereof having a size of 4 cm × 4 cm × 150 µm is heated for 2 hours in a 190ºC thermostatic chamber, then the weight loss on heating is 0.4 mass% or less.