GLASS Russian patent published in 2007 - IPC C03C3/89 

FIELD: technology of silicates, glass industry.

SUBSTANCE: invention relates to glass compositions that can be used in manufacturing decorative-artistic finishing materials for building works. Proposed glass comprises the following components, wt.-%: SiO₂, 65.0-70.0; Al₂O₃, 5.0-7.0; CaO, 5.0-10.0; MgO, 1.0-3.0; Na₂O, 2.8-4.8; TiO₂, 3.0-5.0; fluoride ions (F'), 0.1-0.2; B₂O₃, 5.0-6.0, and BaO, 3.0-4.0. Invention provides enhancing glass hardiness.

EFFECT: improved and valuable property of glass.

1 tbl