COMPOSITION OF ALKALI- AND ACID-RESISTANT GLASS, FIBRE GLASS OBTAINED FROM SAID GLASS AND COMPOSITE CONTAINING FIBRE GLASS Russian patent published in 2010 - IPC C03C13/02 

FIELD: chemistry.

SUBSTANCE: invention relates to composition of alkali- and acid-resistant glass, reinforcing fibre glass obtained from said glass, and composites containing said fibre glass. Said glass contains the following, wt %: SiO₂≥58%, preferably ≤ 65%; ZrO₂ 15-20%; R₂O (R=Na, K or Li) ≥ 14%; K₂O≤0.1%. preferably ≤ 0.05%; RO(R=Mg, Ca or Sr) 2.5-6%; MgO ≤ 4%; TiO₂>1 and ≤ 4%; less than 1% impurities (Al₂O₃, Fe₂O₃, Cr₂O₃), and does not contain F, with the following ratio of components: ZrO₂+TiO₂ ≥ 17%; ZrO₂ / TiO₂ ≥ 6. Fibre glass obtained from said composition can be used to reinforce inorganic materials, for example cement, or organic materials, for example plastic.

EFFECT: obtaining fibre glass resistant to alkali and acid.

14 cl, 1 tbl