Title:
TRANSLUCENT GLASS
Document Type and Number:
Japanese Patent JPS5659639
Kind Code:
A
Abstract:
PURPOSE: To provide the titled glass having a soft silky gloss and contg. SiO2, Al2O3, R2O (R is an alkali metal), CaO, BaO, SO3, Cl, B2O3, F, ZnO, MgO, SrO, PbO, As2O3, Sb2O3, etc. in a specified weight ratio.
CONSTITUTION: This translucent glass has a composition ≥95wt% of which consisting of, by weight 60W85% SiO2, 0.5W10% Al2O3, 2W25% R2O (R is an alkali metal), 0.3W20% CaO, 0.3W20% BaO, 0.1W3% SO3, 0.1W3.5% Cl, 0W5% B2O3, 0W3% F, 0W10% ZnO, 0W10% MgO, 0W10% SrO, 0W10% PbO, 0W1% As2O3 and 0W1% Sb2O3. Gypsum and barium sulfate crystals are deposited in the glass, presenting a soft silky gloss, and this glass is obtd. inexpensively.
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Inventors:
NAKASHIMA NOBUYUKI
Application Number:
JP13536379A
Publication Date:
May 23, 1981
Filing Date:
October 19, 1979
Export Citation:
Assignee:
FUKUOKA TOKUSHIYU GLASS KK
International Classes:
C03C3/087; C03C1/04; C03C3/04; C03C3/11; (IPC1-7): C03C1/04; C03C3/04