Fibers having phosphorus-containing coatings

C - Chemistry – Metallurgy – 03 – C

Patent

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Details

C03C 13/06 (2006.01) C03C 13/02 (2006.01) C03C 25/42 (2006.01) D02G 3/36 (2006.01)

Patent

CA 2238863

Mineral fibers are provided with a phosphorus-containing coating to impart high-temperature resistance without substantially affecting mechanical performance. Preferred mineral-fiber compositions according to the invention with relatively high levels of SiO2 and low levels of Al2O3 and Fe2O3 compositions may advantageously be used for insulation. Such compositions have high-temperature resistance and high biosolubility, yet have properties which allow current processes to fabricate them into insulation. Preferably, the mineral fibers have a KI value 40.

L'invention concerne des fibres minérales pourvues d'un revêtement contenant du phosphore leur permettant de résister à des températures élevées sans affecter sensiblement leurs caractéristiques mécaniques. Des compositions préférées de fibres minérales possédant des niveaux relativement élevés de SiO¿2? et des niveaux bas de Al¿2?O¿3? et de Fe¿2?O¿3? peuvent être utilisées avantageusement à des fins d'isolation. Ces compositions possèdent une résistance aux températures élevées, ainsi qu'un biosolubilité importante et, cependant, présentent des caractéristiques permettant de les utiliser dans des procédés courants d'isolation. Ces fibres minérales possèdent, de préférence, une valeur de Ki ? 40.

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