A flame-resistant flat pressed board and a process for its...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 21/02 (2006.01) B27N 9/00 (2006.01) B32B 21/02 (2006.01) B32B 21/12 (2006.01) E04B 1/94 (2006.01)

Patent

CA 2102214

2102214 9219696 PCTABS00017 A fire-retardant flat-pressed panel of per se combustible panel material, binder, flame protection agent and possibly auxiliary substances contains as the flame protection agent a combination of a substance capable of releasing an acid, especially an inorganic acid, at high temperatures, a carbon-containing substance with esterifiable hydroxyl groups and a substance which can release a non-combustible gas at high temperatures. The response temperatures of the first and last-mentioned substances are above the temperatures needed for making the flat-pressed panel. The flame protection agent has low water solubility and is mixed into the panel material in finely divided form. The flat-pressed panel is preferably a panel made using wood-containing substances, especially wood shavings.

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