Mineral fiber compositions degradable in a physiological...

C - Chemistry – Metallurgy – 03 – C

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C03C 13/00 (2006.01) C03C 3/097 (2006.01) C03C 13/06 (2006.01)

Patent

CA 2043699

La présente invention concerne des compositions de fibres minérales susceptibles de se dégrader au contact d'un milieu physiologique. Des compositions avantageuses comprennent les constituants suivants, selon des proportions pondérales définies ci-après : SiO2 37 à 58 % Al2O3 4 à 14 % CaO 7 à 40 % MgO 4 à 16 % P2O5 1 à 10 % Fe2O3 0 à 15 % (fer total exprimé sous cette forme) la somme CaO + MgO + Fe2O3 demeurant supérieure à 25 %, ainsi que les oxydes Na2O et K2O, dont la somme des pourcentages reste inférieure à 7 %.

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