Patent ID: 7309671
Filing Date: 2007-12-18
Classification: C03C,Y10T

Abstract:
1. A chemically strengthened glass article obtained by immersing a glass article comprising a glass composition in a molten salt containing monovalent cations having an ionic radius larger than that of Na ions to conduct an ion-exchange treatment between the Na ions and the monovalent cations, wherein the glass composition essentially comprises: 60 to 70 wt % SiO 8 to 15 wt % Al 0 to 1 wt % Li 8 to 16 wt % Na 0 to 3.5 wt % K 2 to 5 wt % MgO; 3 to 7.5 wt % CaO; 0 to 4.5 wt % SrO; and 0 to 1 wt % ZrO wherein the sum of Li