| 摘要 |
PROBLEM TO BE SOLVED: To provide an organopolysiloxane-based composition, and a cured material which are excellent in molding processability, transparency, heat resistance and gas barrier property.SOLUTION: A composition and a cured material excellent in molding processability, transparency, heat resistance and gas barrier property can be provided from the organopolysiloxane-based composition including (A) a polyhedral-structure modified polysiloxane obtained by hydrosilylation reacting a polysiloxane compound (b) obtained by hydrosilylating fellow polyhedral-structure polysiloxane-based compounds (a) containing an alkenyl group and a hydrosilyl group with a hydrosilyl group- or alkenyl group-containing compound (c), and (B) a cyclic olefin compound. |
