| 摘要 |
Disclosed is a glass composition having a stable quality, which can be easily obtained. This glass composition can be used as a glass filler to be blended into a polycarbonate resin, and enables to reduce the load imposed on a glass manufacturing apparatus. Specifically, this glass composition contains, in mass %, 50≦̸SiO2≦̸60, 8≦̸Al2O3≦̸15, 0≦̸MgO≦̸10, 5≦̸CaO<21, 0<SrO+BaO≦̸25, 10<MgO+SrO+BaO≦̸30, 0≦̸Li2O+Na2O+K2O<2, 2<TiO2≦̸10 and 0≦̸ZrO2<2 and does not substantially contain B2O3, F, and ZnO.
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