Patent ID: 8242217

Claim:
An epoxy resin curing agent containing thiol compounds (P) which are represented by the following formula (2): X(—O—CO—CR 1 R 2 —CR 3 R 4 —SH) m (2) wherein X is an m-valent aliphatic or aromatic residue of at most 20 carbon atoms, which may have a substituent, R 1 and R 2 are each independently a hydrogen atom or an alkyl group of 1 to 10 carbon atoms, R 3 and R 4 are each independently a hydrogen atom or an alkyl group of 1 to 10 carbon atoms, and at least one of them is an alkyl group of 1 to 10 carbon atoms, and m is an integer of 2 to 8, wherein the thiol compounds (P) are a combination of two or more kinds of thiol compounds, and at least one of the thiol compounds (P) has X having at least one hydroxyl group as a substituent and at least one of the thiol compounds (P) has X having no hydroxyl group as a substituent.