Fire resistant glazings

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 17/10 (2006.01) C09K 21/00 (2006.01)

Patent

CA 2402990

Solutions comprising a sodium silicate waterglass having a modulus of less than 3 and at least 8 % by weight of an organic polyhydroxy compound such as glycerol are useful in the production of interlayers used in fire resistant glass laminates. The solutions are dried on a flat surface such as glass to produce a clear intumescent interlayer having improved impact resistance. The dried interlayer may be removed from the surface in the form of an elastomeric material which may also be used as an interlayer in a fire resistant glazing.

L'invention concerne des solutions comprenant un silicate de sodium à agrégat anionique dotées d'un module de moins de 3 et au moins 8 % en poids d'un composé polyhydroxylé comme le glycérol, servant à la fabrication de couches intermédiaires utilisées pour fabriquer des laminés de verre coupe-feu. Les solutions sont séchées sur une surface plate comme le verre, afin de produire une couche intermédiaire intumescente ayant une résistance d'impact améliorée. La couche intermédiaire séchée peut être enlevée de la surface sous forme de matériau en élastomère qui peut être aussi utilisé comme couche intermédiaire dans un vitrage coupe-feu.

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