| 摘要 |
<p>A molding material is provided to obtain a molding material with heat resistance and low coloring deterioration even in being exposed to the light of the high energy or high temperature for a long term. A molding material comprises a polysilsesquioxanes compound of a ladder-type structure, having a repeating unit of the chemical formula (I) within molecule. In the chemical formula (I), R shows a group represented by the chemical formula: [AO-(CH2)r-], (In the chemical formula, A shows a blocking group of a hydroxyl group, and R shows an integer of 1-10); R^2 shows a phenyl group, C1-20 alkyl group having a substitution radical(in the chemical formula, the radical shown in OA is excluded), or C2-20 alkenyl group; and l, m, and n independently show 0 or arbitrary natural number, wherein the case that both of l and n are 0, is excluded.</p> |
