Patent ID: 8063156

Claim:
A liquid thermosetting epoxy resin composition comprising: a base resin; and a curing catalyst (C′), the base resin comprising: a cycloaliphatic epoxy compound (A) represented by the Formula I wherein Y is a divalent alicyclic hydrocarbon group; and a carbonate polyol oligomer (B) derived from: 1,6-hexanediol; another diol component HO—R—OH, wherein R represents a linear or branched hydrocarbon group containing two to fourteen carbon atoms which may contain oxygen or a hydrocarbon group containing two to fourteen carbon atoms and having one to three cyclic structures which may contain oxygen in its ring; and a carbonate component, wherein the carbonate polyol has a molar ratio of 1,6-hexanediol to the other diol component of 10:1 to 2:8 and a number-average molecular weight of 300 to 3000.