Patent ID: 7323522

Claim:
A heat-curable resin composition comprising: an epoxy-containing compound having at least two epoxy groups per molecule, and a curing agent; wherein said curing agent includes a cyclohexanetricarboxylic monoester represented by the following formula 1: wherein R is a substituent group having 10 or less carbon atoms selected from: R 1 , R 2 —O—R 3 , R 2 —CO—R 3 , and R 2 —COO—R 3 ; wherein: R 1 is a straight-chain or branched alkyl group, R 2 is a straight-chain or branched alkylene group, and R 3 is a straight-chain or branched alkyl group; and wherein one or more hydrogen in R 1 , R 2 , and R 3 being optionally replaced by a hydroxyl group or hydroxyl groups.