Glass fibres capable of decomposing in a biological medium

摘要

Glass composition for fibres capable of degrading in a biological medium. Advantageous glass compositions contain the following constituents taken in the weight proportions below: SiO2 57 to 70 % Al2O3 0 to 5 % CaO 5 to 10 % MgO 0 to 4 % Na2O + K2O 13 to 18 % B2O3 2 to 10 % F 0 to 1.5 % P2O5 0 to 4 % Impurities < 2 % ue