Mineral fiber compositions

C - Chemistry – Metallurgy – 03 – C

Patent

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C03C 13/06 (2006.01) B32B 9/00 (2006.01) C03C 13/00 (2006.01) C03C 13/02 (2006.01) D02G 3/00 (2006.01)

Patent

CA 2267445

Mineral fiber compositions are disclosed which, in a first embodiment, include the following components, indicated in weight percents: about 54 to about 70 percent SiO2, about 0 to about 4 percent Al2O3, about 0 to about 6 percent Na2O, about 0 to about 6 percent K2O, about 0 to about 6 percent MgO, about 10 to about 28 percent CaO, about 6 to about 17 percent total iron as FeO, and about 0 to about 5 percent TiO2, wherein the total weight percent of SiO2 and Al2O3 ranges from about 56 percent to about 72 percent, the total weight percent of MgO and CaO ranges from about 12 percent to about 28 percent, the total weight percent of Na2O and K2O does not exceed 6 percent, and the total weight percent of all components, including trace elements, if any, is 100 percent. In a second embodiment, the compositions include the following components, indicated in weight percents: about 50 to about 68 percent SiO2, about 0 to about 4 percent Al2O3, about 0 to about 6 percent K2O, about 0 to about 6 percent Na2O, about 0 to about 10 percent MgO, about 10 to about 28 percent CaO, about 6 to about 16 percent total iron as FeO, about 0 to about 5 percent TiO2, and about 0.5 to about 12 percent ZrO2, wherein the total weight of Na2O and K2O does not exceed 6 percent and the total weight of all components, including trace elements, if any, is 100 percent.

On décrit des compositions de fibres minérales, lesquelles, dans un premier mode de réalisation, comprennent les constituants suivants, indiqués en pourcentages pondéraux: environ 54 à environ 70 % de SiO¿2?, environ 0 à environ 4 % de Al¿2?O¿3?, environ 0 à environ 6 % de Na¿2?O, environ 0 à environ 6 % de K¿2?O, environ 0 à environ 6 % de MgO, environ 10 à environ 28 % de CaO, environ 6 à environ 17 % de fer en tant que FeO, et environ 0 à environ 5 % de TiO¿2?, le pourcentage pondéral total de SiO¿2? et de Al¿2?O¿3? se situant entre environ 56 et environ 72 %, le pourcentage pondéral total de MgO et de CaO se situant entre environ 12 et environ 28 %, le pourcentage pondéral total de Na¿2?O et de K¿2?O ne dépassant pas 6 %, et le pourcentage pondéral total de tous les constituants, y compris, le cas échéant, les éléments traces, étant de 100 %. Dans un second mode de réalisation, les compositions comprennent les constituants suivants, indiqués en pourcentage pondéral: environ 50 à environ 68 % de SiO¿2?, environ 0 à environ 4 % de Al¿2?O¿3?, environ 0 à environ 6 % de K¿2?O, environ 0 à environ 6 % de Na¿2?O, environ 0 à environ 10 % de MgO, environ 10 à environ 28 % de CaO, environ 6 à environ 16 % de fer en tant que FeO, environ 0 à environ 5 % de TiO¿2?, et environ 0,5 à environ 12 % de ZrO¿2?, le poids total de Na¿2?O et de K¿2?O ne dépassant pas 6 % et le poids total de tous les constituants, y compris, le cas échéant, des éléments traces, étant de 100 %.

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