| abstract |
The present invention relates to a kind of hardenability silicon compositions, are at least made of following: (A) organopolysiloxane, have at least two alkenyl and at least one aryl in one molecule；(B) organopolysiloxane, with the hydrogen atom of at least two and silicon atom bonding in one molecule；(C) organopolysiloxane has at least one aryl in one molecule, and contains the metallic atom in the group as composed by V, Ta, Nb and Ce；And (D) silicon hydrogenation catalyst.According to the present invention, it is possible to provide one kind, which can be formed, cracking occurs and the hardenability silicon composition of hardening thing inhibited from yellowing because of heat ageing processing. |