Fire retardant polystyrene

Details Fire retardant polystyrene Fire retardant polystyrene

C - Chemistry, Metallurgy

08

J

C08J 9/00 (2006.01)

Patent

CA 2687014

A composition comprising : (i) expanded or expandable polystyrene beads or particles (ii) an intumescent, and (iii) a fire-resistant binder the weight of (i) being in the range 20 - 75% by weight based on the total weight of (i), (ii) and (iii) is disclosed. The fire-resistant binder is an inorganic material chosen from the list comprising metal, silicates, metal aluminates, metal amminosilicates and zeolites preferably an aqueous solution of sodium silicate. A method of preparing a fire-retardant polystyrene is also disclosed.

L'invention concerne une composition comprenant : (i) des billes ou particules de polystyrène expansé ou expansible, (ii) un agent intumescent, et (iii) un liant résistant au feu, le poids de (i) se situant dans la plage de 20 - 75 % en poids sur la base du poids total de (i), (ii) et (iii). Le liant résistant au feu est une matière inorganique choisie parmi les silicates métalliques, les aluminates métalliques, les amminosilicates métalliques et les zéolites, de préférence, une solution aqueuse de silicate de sodium. L'invention porte également sur un procédé de fabrication d'un polystyrène ignifuge.

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