Patent ID: 8871890

Claim:
A curable resin composition comprising a ladder-like silsesquioxane (A) having an aliphatic carbon-carbon double bond in a molecule; a ladder-like silsesquioxane (B) having a Si—H bond in a molecule; and a hydrosilylation catalyst; wherein the ladder-like silsesquioxane (A) is represented by Formula (L): wherein in Formula (L), p represents an integer of 1 or more, at least one of terminal Rs and/or at least one of Rs as side chains is a group having an aliphatic carbon-carbon double bond, and the remaining Rs other than the group having an aliphatic carbon-carbon double bond are the same as or different from one another and are selected from the group consisting of C 1-20 alkyl groups and C 6-14 aryl groups; or wherein the ladder-like silsesquioxane (B) is represented by Formula (L): wherein in Formula (L), p represents an integer of 1 or more, at least one of terminal Rs and/or at least one of Rs as side chains is hydrogen atom or a group having a Si—H bond, and the remaining Rs other than hydrogen atom or a group having a Si—H bond are the same as or different from one another and are at least one selected from the group consisting of C 1-20 alkyl groups and C 6-14 aryl groups.