GLASS FOR MANUFACTURE THE COLOR POWDER Russian patent published in 2007 - IPC C03C12/00 C03C4/02 C03C3/72 

FIELD: glass industry; construction materials industry; methods of production of silicates.

SUBSTANCE: the invention is pertaining to the silicates technology and is dealt with the compositions of the glass for finishing of the construction articles, for example the concrete articles. The technical result of the invention is the possibility to use the glass at the high-temperature finishing of the construction articles surface. The glass for manufacture of the color power contains (in mass %):_{SiO2 - 30.0-35.0; СаО - 34.0-38.0; MgO - 4.0-5.0;Na2O - 14.0-16.0;ZrO2 - 3.0-4.0;В2О3 - 1.0-2.0; PbO - 5.0-7.0. The glass may additionally contain WO3 (in mass %) in the quantity of 0.3-0.5.}

EFFECT: the invention ensures the possibility to use the glass at the high-temperature finishing of the construction articles surface.

2 cl, 1 tbl