| 摘要 |
PROBLEM TO BE SOLVED: To provide an organopolysiloxane-based composition and a cured product excellent in molding processability, transparency, heat/light resistance and gas barrier properties.SOLUTION: This organopolysiloxane-based composition includes: (A) a polyhedral structure polysiloxane denatured body obtained by denaturing a hydrosilyl group-containing compound (b) to an alkenyl group-containing polyhedral structure polysiloxane-based compound (a); and (B) a compound having two or more alkenyl groups, where the component (B) is at least one kind selected from an aromatic compound having two or more alkenyl groups, an alicyclic hydrocarbon-based compound having two or more alkenyl groups, divinyl silane-based compound, etc. |
