Compositions for mineral wools

Details Compositions for mineral wools Compositions for mineral wools

C - Chemistry, Metallurgy

03

C

C03C 13/06 (2006.01)

Patent

CA 2662886

The subject of the invention is a mineral wool, the glass fibres of which have a chemical composition substantially free of boron oxide and comprising the following constituents in the limits defined below, expressed in percentages by weight: 60 to 75 SiO2; 0 to 4 Al2O3; 17 to 22 Na2O; 5 to 15 CaO; 0 to 2 Fe2O3; and 0 to 3 P2O5.

L'invention a pour objet une laine minérale dont les fibres de verre présentent une composition chimique sensiblement dépourvue d'oxyde de bore et comprenant les constituants suivants dans les limites définies ci-après exprimées en pourcentages pondéraux : SiO2 60 à 75; Al2O3 0 à 4; Na2O 17 à 22; CaO 5 à 15; Fe2O3 0 à 2; P2O5 0 à 3.

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