NEUTRAL SOAP HAVING LOW PENETRATION COEFFICIENT Russian patent published in 1999 - IPC

FIELD: glazing of equipment and transport vehicles. SUBSTANCE: generally green gray sodium-potassium-silicate glass having low penetration coefficient (not higher than 25% penetration of light) reduces penetration coefficient of solar energy when glass comprises coloring components ( wt proportions): total iron, 1.3-2; NiO, 0.001-0.005; CaO 0.02-0.04; and Se, 0.0002-0.03. This glass has divalent iron index from 18-30. Penetration coefficient of total solar energy is not higher than 25%, whereas UV radiation penetration coefficient is not higher than 15%, and thickness is 4 mm. EFFECT: lower light penetration coefficient. 25 cl, 3 tbl