Artificial mineral wool composition

Details Artificial mineral wool composition Artificial mineral wool composition

C - Chemistry, Metallurgy

03

C

C03C 13/06 (2006.01) A01G 31/00 (2006.01) C03C 13/00 (2006.01)

Patent

CA 2248941

The invention concerns a mineral wool composition capable of dissolving in a physiological medium comprising the constituents listed below in the following weight proportions: CaO + MgO + BaO + Na¿2?O + K¿2?O + B¿2?O¿3? - 2 x Al¿2?O¿3? > 30 %, RO 13.5 to 19.5 %, R¿2?O 14.2 to 23 %, RO/R¿2?O 0.70 to 0.95 %, CaO/MgO > 1.5 %, SiO¿2? 47 to 58.5 %, Al¿2?O¿3 ?0 to 3.5 %, B¿2?O¿3? 5 to 10 %, Fe¿2?O¿3? (total iron ) 0 to 3 %, with RO: the oxides of elements of column 2a of the periodic table, including CaO, MgO, BaO and SrO, R¿2?O: the oxides of column 1a of the periodic table, including Na¿2?O, K¿2?O, Li¿2?O.

L'invention a pour objet une composition de laine minérale susceptible de se dissoudre dans un milieu physiologique qui comprend les constituants ci-après selon les pourcentages pondéraux suivants: CaO + MgO + BaO + Na2O + K2O + B2O3 - 2 x Al2O3 > 30 %, RO 13,5 à 19,5 %, R2O 14,2 à 23 %, RO/R2O 0,70 à 0,95, CaO/MgO > 1,5, SiO2 47 à 58,5 %, Al2O3 0 à 3,5 %, B2O3 5 à 10 %, Fe2O3 (fer total) 0 à 3 %, avec RO: les oxydes des éléments de la colonne 2a du tableau périodique, dont CaO, MgO, BaO et SrO, R2O: les oxydes de la colonne 1a du tableau périodique, dont Na2O, K2O, Li2O.

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