GLASS Russian patent published in 1994 - IPC

FIELD: glass industry. SUBSTANCE: decorative glass has, %: silicon oxide (SiO₂) 51.69-60.31; aluminium oxide (Al₂O₃) 3.94-4.37; boron oxide (B₂O₃) 2.43-2.83; ferric oxide (Fe₂O₃) 1.18-2.03; calcium oxide (CaO) 8.26-8.62; magnesium oxide (MgO) 0.83-1.43; sodium oxide (Na₂O) 8.15-8.96; barium oxide (BaO) 1.17-2.0; manganese oxide (MnO₂) 0.36-0.62; chrome oxide (Cr₂O₃) 1.14-1.94; zinc oxide (ZnO) 3.1-5.31; copper oxide (CuO) 0.83-1.43; calcium oxide (CaO) 0.5-0.85; nickel oxide (NiO) 4.86-8.34; cobalt oxide (CoO) 0.94-1.59. Properties: chemical resistance : water stability 0.22-0.28% , resistance for 1N NaOH is 0.04-0.08%, and for 1N HCl is 0.18-0.2%. Glass is used for making of facing materials. EFFECT: enhanced quality of glass. 2 tbl