GLASS Russian patent published in 2008 - IPC C03C3/89 

FIELD: glass industry; other industries; production of the glass dishes.

SUBSTANCE: the invention presents the method of production of the glass used in manufacture of the dishes. The technical result of the invention is reduction of the factor of the linear thermal expansion of the glass. The invention provides that the glass has the following composition (in mass %): SiO₂ - 50.0-55.0; В₂О₃ - 15.0-20.0; СаО - 1.0-3.0; ZnO - 8.0-12.0; Na₂O - 2.0-3.0; CdO - 10.0-15.0; Se - 0.1-0.15; S - 0.05-0.1; P₂O_{5 -} 1.8-3.8. The positive effect of the invention is improvement of the quality of the glassware.

EFFECT: the invention ensures improvement of the quality of the glassware.

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