Intumescent fire sealing composition

Details Intumescent fire sealing composition Intumescent fire sealing composition

C - Chemistry, Metallurgy

09

K

C09K 21/14 (2006.01) C09K 21/04 (2006.01) C09K 3/10 (2006.01)

Patent

CA 2367869

Described is a flexible, solid fire sealant produced by high shear mixing in a substantially volatile-free state and capable of being molded or extruded into a variety of shapes and used as firestops for windows, doors, dampers, shutters, and through-penetrations, the sealant containing water-insoluble intumescent mineral granules, a polymeric, halogen-free binder, and a flame retardant, wherein the sealant has a softness value from about 0.01 to about 3.75 mm and exhibits high expansion values and chars upon exposure to heat.

L'invention concerne un joint ignifuge solide et souple obtenu par mélange sous cisaillement élevé à l'état quasiment non volatil et pouvant être moulé ou extrudé en une grande variété de formes et utilisé comme coupe-feu sur des fenêtres, des portes, des volets, des éléments d'obturation et des parties passantes. Ce joint renferme des granules de minéraux intumescents insolubles dans l'eau, un liant polymère exempt d'halogène et un ignifugeant. Ce joint possède une valeur de mollesse comprise entre environ 0,01 et environ 3,75 mm et des valeurs de dilatation élevées et tend à former des produits carbonisés après exposition au soleil.

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