FIELD: chemistry.
SUBSTANCE: invention relates to glass compositions for moulding fibre. The glass composition for moulding fibre contains the following components, wt %: SiO2- 60-68; B2O3- 7-12; Al2O3- 9-15; MgO - 8-15; CaO - 0-4; Li2O >0-2; Na2O - 0-1; K2O - 0-1; Fe2O3 - 0-1; F2 - 0-1; TiO2 - 0-2 and other components 0-5, wherein content of Li2O is higher than that of Na2O or K2O.
EFFECT: reduced dielectric constant of the fibre.
40 cl, 4 tbl
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