GLASS FOR MANUFACTURING FIBER Russian patent published in 2004 - IPC

FIELD: glass industry. SUBSTANCE: invention elates to silicate technology and composites of glass used for manufacturing fiber being by spinneret method mainly. Glass for manufacturing fiber comprises the following components, wt.-%: SiO₂, 66.0-70.0; Al₂O₃, 1.0-2.0; CaO, 2.0-3.0; Na₂O, 8.5-10.0; ZrO₂, 12.0-15.0; TiO₂, 0.5-1.0; SnO₂, 4.0-5.0. Glass comprises additionally Sb₂O₃ and/or As₂O₃ in the amount 0.1-0.2 wt.- %. Glass melting point is 1500 C. Invention provides the enhanced stability of fiber being especially to alkali effect. EFFECT: improved manufacturing method, improved properties of glass. 2 cl, 2 tbl