GLASS Russian patent published in 2007 - IPC C03C3/118 

FIELD: technology of silicates, glass industry.

SUBSTANCE: invention relates to glass compositions that can be used in producing facing tiles, decorative-artistic and household-domestic articles. Proposed glass comprises the following components, wt.-%: SiO₂, 50.0-54.0; Al₂O₃, 8.0-10.0; CaO, 15.0-20.0; Na₂O, 2.0-4.0; Cr₂O₃, 2.5-3.5; P₂O₅, 1.0-2.0; fluoride ions (F'), 0.1-0.2; B₂O₃, 13.2-14.2, and As₂O₃, 0.1-0.2. Invention provides enhancing thermal stability of glass.

EFFECT: improved and valuable property of glass.

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