MODIFYING ALKALI-EARTH SILICATE FIBRE Russian patent published in 2011 - IPC C03C13/00 

FIELD: chemistry.

SUBSTANCE: method of producing fire resistant alkali-earth silicate fibre from molten mass involves using an alkali metal as a predetermined component to improve mechanical properties of the fibre compared to fibre in which no alkali metal is used. The fibre contains M₂O, in which M denotes an alkali metal and in which either 65% < SiO₂, 13.5% < CaO < 27.5%, 72% < SiO₂ + ZrO₂ + B₂O₃ + 5P₂O₅, M₂O > 0.5%, or 75% < SiO₂, 13.8% < CaO < 27.8%, 75% < SiO₂ + ZrO₂ + B₂O₃ + 5P₂O₅ and M₂O > 0.2%.

EFFECT: improved mechanical and thermal properties of the fibre.

12 cl, 9 dwg, 6 tbl