| abstract |
A composite composition wherein a siliceous polycondensate (A) prepared by the hydrolysis and polycondensation of at least one alkoxysilane compound and a polymer (B) of a radical polymerizable vinyl compound (B') mainly comprising at least one compound selected from the group consisting of acrylic acid, methacrylic acid, acrylic ester and methacrylic ester form a homogeneous mixture, which is produced by the radical polymerization of the vinyl compound (B') in a state in which the polycondensate (A) is dissolved in the compound (B'). This composition is excellent in the transparency, rigidity, toughness and thermal resistance, and is useful in the fields where inorganic glass has been used. |