Patent ID: 8318885

Claim:
A curable resin composition comprising: a condensate (A) having two or more thiol groups in one molecule on average and obtained by hydrolysis and condensation of a thiol-containing alkoxysilane (a1) of the general formula (1): R 1 Si(OR 2 ) 3 (1) wherein R 1 represents a hydrocarbon group of carbon number 1 to 8 having at least one thiol group, or an aromatic hydrocarbon group having at least one thiol group; and R 2 represents a hydrocarbon group of carbon number 1 to 8; and at least one compound selected from the group consisting of a compound (C) having at least two isocyanate groups and a compound (D) having a carbon-carbon double bond having at least two allyl groups, wherein the [total mole number of any unreacted alkoxy group]/[total mole number of the alkoxy group included in the thiol-containing alkoxysilane (a1)] is at most 0.3.