| 摘要 |
PROBLEM TO BE SOLVED: To provide a transparent plate made of a polycarbonate resin and having high heat ray shielding performances while maintaining transparency for visible light. SOLUTION: The transparent plate made of the polycarbonate resin is obtained by kneading a transparent polycarbonate resin with tin-doped indium oxide powder and a dispersing agent composed of an ester of a fatty acid in (80:20) to (0:100) ratio of a saturated fatty acid to an unsaturated fatty acid and a polyhydric alcohol and molding the kneaded material into a platy form. In the transparent plate, the amount of the compounded tin-doped indium oxide powder based on 100 pts.wt. of the polycarbonate resin satisfies the relationship of formula (1): 0.06×A<SP>-1</SP>≤B≤0.5×A<SP>-0.3</SP>äwherein, A is the plate thickness (mm); and B is the amount (pts.wt.) of the compounded tin-doped indium oxide powder}. The ratio of the dispersing agent to the tin-doped indium oxide powder satisfies the relationship of formula (2): 0.2≤C/B≤20 äwherein, C is the amount (pts.wt.) of the compounded dispersing agent}. COPYRIGHT: (C)2007,JPO&INPIT
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